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Power quality monitoring instruments are divided into online and portable types, with several power quality online monitoring devices configured in the power system and several user distribution networks for real-time collection, analysis, processing, display, and transmission of power quality parameters of the monitored power grid; At least one service
Release time: April 23, 2019 Number of clicks: 486
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1、 The online monitoring system for power quality provides two curve analysis interfaces: real-time curve and historical trend. By calling the real-time curve interface of the relevant circuit, the current load operation status of the circuit can be analyzed. For example, by calling the real-time curve of a certain distribution circuit, the electrical equipment of the circuit can be analyzed
Release time: April 23, 2019 Number of clicks: 313
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In power quality monitoring, voltage sag refers to a decrease in user duration from 0.5 cycles to 1 minute to 10% to 90% of rated voltage or current due to system faults or disturbances. When the amplitude is between 0.1p.u. and 0.9p.u. (per unit value), the system frequency remains at the nominal value and then returns to normal levels. It is widely believed internationally that the voltage amplitude is low
Release time: April 23, 2019 Number of clicks: 287
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System composition of power quality monitoring instrument: System composition: The power system power quality monitoring instrument mainly consists of on-site monitoring layer, communication transmission layer, and data management layer. There are three modes of networking: cable, fiber optic, and wireless&
Release time: June 29, 2019 Number of clicks: 51
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With the development of power electronics technology, direct current transmission and high-power single-phase rectification technology are widely used in industrial sectors and electrical equipment, such as high-power thyristor devices, switching power supplies, variable frequency speed regulation, etc. These typical nonlinear loads will be sucked in or injected into the harmonic from the power grid
Release time: April 23, 2019 Number of clicks: 141
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For photovoltaic power generation, users are not only users of electricity, but also producers. Due to environmental impacts, photovoltaic power generation has high harmonic content and unstable power generation, all of which cause grid pollution and affect power quality. Therefore, in order to prevent power quality issues
Release time: April 23, 2019 Number of clicks: 272
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According to the voltage level, photovoltaic power stations can be divided into three categories: firstly, photovoltaic power stations connected to the power grid with a voltage level of 66KV or above are called large-scale photovoltaic power stations; The second is that photovoltaic power stations connected to the power grid with a voltage level of 10-35KV are called medium-sized photovoltaic power stations; The third is that photovoltaic power stations connected to a low-voltage power grid with a voltage level of 0.4kV are called small-scale photovoltaic power generation
Release time: April 23, 2019 Number of clicks: 92
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The power quality monitoring system mainly monitors the power quality status of public power grids or power users. Main technical indicators for power quality monitoring: 1
Release time: April 23, 2019 Number of clicks: 135
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Power quality monitoring is used for measuring, calculating, and displaying 8 parameters including voltage, current, active power, power factor, apparent power, reactive power, electrical energy, and frequency. Fuguang Electronics F346H three-phase intelligent clamp digital power: F346 clamp digital power
Release time: April 23, 2019 Number of clicks: 77
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The system composition of the power system power quality monitoring instrument is as follows: 1. The on-site monitoring layer is equipped with various types of power and power quality monitoring equipment, which are required to have communication functions. The main products include ACR330ELH, ACR320ELH, ACR230ELH, ACR220ELH and other power instruments.
Release time: July 27, 2019 Number of clicks: 44
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Introduction to Power Quality Monitoring Device System: With the development of power electronics technology, DC transmission and high-power single-phase rectification technology are widely used in industrial sectors and electrical equipment, such as high-power thyristor devices, switching power supplies, variable frequency speed regulation, etc. These typical non linear loads will be
Release time: August 8, 2019 Number of clicks: 50
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What is the main purpose of power quality monitoring devices? Power quality mainly includes the quality of voltage, frequency, and waveform. The online monitoring equipment for power quality mainly measures voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics, voltage asymmetry, imbalance, etc. Monitoring power supply reliability is also important
Release time: October 16, 2019 Hits: 49
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The function of the power quality monitoring device system: 1. Terminal monitoring unit: completed by the power quality monitoring instrument; Communication service system: mainly composed of monitoring instrument communication system, communication server, and communication module. The monitoring communication system is responsible for receiving communication server instructions, parsing instructions, searching and packaging the required data, and communicating
Release time: October 26, 2019 Hits: 65
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The important indicators for measuring power quality monitoring devices are: 1. Voltage quality: Current quality refers to the deviation between the actual voltage and the ideal voltage, reflecting whether the power supply enterprise provides qualified electricity to users. The deviation here should be generalized, including amplitude, waveform, and phase. This definition includes large
Release time: November 15, 2019 Number of clicks: 85
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The monitoring method of the power system power quality monitoring instrument: 1. Regular inspection. Mainly suitable for situations where it is necessary to master power quality without continuous testing, or where continuous online monitoring conditions are not available. Distribution of power supply systems for residential, commercial, and small factories
Release time: December 7, 2019 Number of clicks: 112
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What aspects can power quality monitoring devices monitor? 1. Voltage deviation, according to the national standard GB/T12325-2008 "Power Quality - Voltage Deviation of Power Supply", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed
Release time: December 28, 2019 Hits: 77
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The function of the power quality monitoring device: 1. Terminal monitoring unit: completed by the power quality monitoring instrument. Communication service system: mainly composed of monitoring instrument communication system, communication server, and communication module. The monitoring communication system is responsible for receiving communication server instructions, parsing instructions, searching and packaging required data, and passing through the communication module
Published on January 16, 2020 Hits: 84
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Power quality monitoring instrument system and monitoring method: several power quality monitoring instrument equipment, which are separately configured in the power system and several user distribution networks, for real-time collection, analysis, processing, display, and transmission of power quality parameters of the monitored power grid; At least one server, via phone line
Published on February 20, 2020 Hits: 85
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Technical requirements and purposes of power quality monitoring devices: 1. The power quality monitoring device is a high-performance multifunctional power quality testing and analysis instrument. Adopting DSP+ARM+CPLD core, 5.5 inch large screen LCD (320 × 240 points
Release time: March 24, 2020 Hits: 77
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What is the purpose of power quality monitoring devices? 1. Understanding the situation: Real time measurement and data collection of various power quality indicators to ensure observation, recording, and dynamic analysis of the basic operating conditions of the power system; Comprehensive evaluation: A complete understanding of the stability and operation of the power grid
Published on April 2, 2020 Hits: 81
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When designing power system power quality monitoring instruments, it is necessary to consider that the power system power quality monitoring instrument is a new generation of multifunctional power instruments, and high performance and ease of use are fully considered in the design process. Equipped with power parameter measurement, comprehensive energy metering, time-sharing and multi-rate electricity, timed automatic meter reading, and electricity
Release time: April 14th, 2020 Hits: 49
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The role of power quality monitoring instruments: 1. Database service system: mainly composed of a database, internal processing programs, and database management modules. The database is used to store various power quality monitoring instruments in the power quality monitoring and analysis system
Release time: May 5th, 2020 Number of clicks: 85
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Preparation work before operation of the power quality monitoring instrument: 1. Develop a work plan, of which two important items are to determine the detection objectives and scope. Typical detection objectives include addressing specific device performance issues, identifying and correcting interference sources within the device, and identifying
Release time: May 15th, 2020 Hits: 36
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Voltage quality. Provide the deviation between the actual voltage and the ideal voltage to reflect whether the power supply department allocates qualified electricity to users. Power quality monitoring devices typically include voltage deviation, voltage frequency deviation, voltage imbalance, electromagnetic transient phenomena, voltage fluctuations and flickers, short-term voltage fluctuations, voltage harmonics, voltage interharmonics, and voltage
Published on June 28, 2020 Hits: 94
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1. Measurement and analysis of the AC power quality supplied by the public power grid to the user end, including frequency deviation, voltage deviation, allowable three-phase voltage imbalance, and grid harmonics; The power system power quality monitoring instrument analyzes the power quality of various electrical equipment in the public power grid under different operating states; Testing and analyzing the movement of circuit breakers in power systems
Release time: July 7, 2020 Hits: 51
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The series resonance of power quality monitoring devices, as the name suggests, refers to the phenomenon where the terminal voltage and total current of the circuit are in phase in a series circuit of resistors, inductors, and capacitors. This phenomenon is called series resonance.
Release time: April 23, 2019 Number of clicks: 328
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In recent years, with the rapid development of information technology, the proportion of sensitive loads such as computer and microprocessor based electrical equipment and various power electronic devices in the power system load has significantly increased. Their requirements for power quality are more stringent than those of general electrical equipment
Release time: April 23, 2019 Number of clicks: 215
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China's power quality monitoring technology has enormous potential and development space, and will be further developed and applied in the future. Firstly, in terms of electricity
Release time: April 23, 2019 Number of clicks: 111
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What are the functions of power quality monitoring instruments? 1. Apply wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals& Nb
Release time: April 23, 2019 Number of clicks: 102
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The main characteristics of the power quality monitoring instrument include: 1. Adopting a DSP+ARM+CPLD core, fast and accurate data processing, and strong functionality
Release time: April 23, 2019 Number of clicks: 119
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1. Requirements for power quality monitoring equipment 1) Requirements for photovoltaic power generation systems connected to distribution network technology in accordance with GB/T29319-2012
Release time: April 23, 2019 Hits: 293
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What are the characteristics of power quality monitoring devices? 1. Equipped with GPRS wireless transmission function and Ethernet remote transmission function, it can be accessed anytime, anywhere
Release time: April 23, 2019 Number of clicks: 89
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The use of electrical relays to protect human life and equipment from electrical faults is a mainstream practice, which is essential but often overlooked. The installation design and product selection of power quality monitoring devices are crucial for creating an effective system, which will not
Release time: April 23, 2019 Number of clicks: 62
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Function of the power quality monitoring system: 1. Terminal monitoring unit: completed by the power quality monitoring instrument. 2. Communication service system: mainly composed of monitoring instrument communication system, communication server, and communication module, among which the monitoring communication system is responsible for receiving
Release time: April 23, 2019 Number of clicks: 125
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The power quality monitoring device, also known as the harmonic power monitoring device, is a high-performance multifunctional power quality testing and analysis instrument. Mainly solves the rapid increase in power load, especially the continuous growth of impulsive and nonlinear load capacity, which causes waveform distortion in the power grid
Release time: April 23, 2019 Number of clicks: 124
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The characteristics of the power quality monitoring device: The power grid is composed of five links: "generation, transmission, transformation, distribution, and use". As the "distribution and use" link on the user side, it consumes 80% of the total electricity. With the development of social economy, electrified railways, electric arc furnaces, frequency converters, and other industries are characterized by impact, nonlinearity, and imbalance
Release time: July 3, 2019 Number of clicks: 50
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The function of the power quality monitoring device system: 1. Terminal monitoring unit: completed by the power quality monitoring instrument. 2. Communication service system: mainly composed of monitoring instrument communication system, communication server, and communication module, where the monitoring communication system is responsible for receiving communication server instructions, parsing instructions, and searching for the required number of packages
Release time: July 10, 2019 Number of clicks: 38
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The system composition of the power system power quality monitoring instrument is as follows: 1. On site monitoring layer. Install various types of electrical energy and power quality monitoring equipment on site, and require communication functions. 2. Communication transmission layer. To transmit the data collected by monitoring layer devices to the service
Release time: August 31, 2019 Hits: 79
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Product characteristics of power quality monitoring device: Power quality monitoring device is a system management system used to detect electricity. The power grid is composed of five links: "generation, transmission, transformation, distribution, and utilization". As the "distribution and utilization" link on the user side, it consumes 80% of the total electrical energy. With the development of social economy
Release time: September 10th, 2019 Number of clicks: 43
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Testing and analysis of power system power quality monitoring instrument: The power system power quality monitoring instrument is mainly installed at the front end of the boosting and grid connection, which can achieve uninterrupted monitoring of the power quality of each boosting station and upload the collected data to the backend server of the main station through the network to monitor the power quality of each boosting station
Release time: September 21, 2019 Hits: 56
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What are the common functions of power quality monitoring devices? 1. Power system monitoring, alarm, and recording. Multiple data monitoring alarm and recording, frequency limit exceeding alarm, three-phase voltage harmonic exceeding alarm, three-phase current harmonic exceeding alarm, voltage exceeding and below line alarm, total voltage distortion rate alarm and voltage unevenness alarm
Release time: October 9, 2019 Number of clicks: 114
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What are the functions of power quality monitoring devices? The power quality monitoring device realizes the measurement of power quality parameters, which is installed in power supply system substations, user stations, and railway traction stations. It monitors whether the power quality of power supply lines meets national standards and conducts power quality assessment for users
Release time: October 29, 2019 Number of clicks: 76
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Voltage fluctuation and flicker of power system power quality monitoring instrument: Voltage fluctuation and flicker are mainly generated by impulsive loads. Setting aside the performance of equipment, improving the power supply capacity of the power grid and installing compensation equipment can be used to control voltage fluctuation and flicker. Measures to improve power supply capacity: increase power supply
Release time: November 30, 2019 Hits: 67
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The harm of power quality monitoring equipment in the power system: 1. The harm of harmonics to electrical equipment is mainly manifested as: the main impact of harmonics on rotating motors is to cause additional losses, followed by the generation of mechanical vibration, noise, and harmonic overvoltage. Harmonics are caused by increased losses in power transformers, resulting in higher
Release time: December 21, 2019 Hits: 138
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Does the power quality monitoring device have a voltage withstand test function? The power quality monitoring device is developed based on relevant national power industry standards and the technical requirements of State Grid Corporation of China for power quality. It systematically analyzes the research level of power measurement technology and power quality at home and abroad, and combines with the actual needs of China
Release time: December 31, 2019 Hits: 66
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What are the functional characteristics of power quality monitoring devices? 1. Component measurement and voltage imbalance analysis. It can measure the imbalance of voltage and current, as well as the amplitude and phase of zero sequence, positive sequence, and negative sequence, and display the phase diagram of voltage and current. Power system frequency wave
Published on February 5th, 2020 Clicks: 77
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The power quality monitoring device is the main equipment used in power grid applications. The online power quality monitoring device is the basic and main equipment for the power grid power quality supervision and detection network. It is now sold and used in the market for monitoring some indicators of power quality produced domestically and internationally, such as harmonics and imbalance
Published on February 25, 2020 Hits: 77
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The characteristics of the power quality monitoring instrument are: 1. Reliable: The voltage input adopts a high voltage isolation module (2000V, response time ≤ 2 μ S. The current input adopts alternating current clamp (0-50KHz, 0-5Arms), which isolates the input signal from the measurement system and has stronger anti-interference ability; High accuracy: not applicable to harmonics and three-phase
Published on March 17, 2020 Hits: 83
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The main functions and characteristics of the power quality monitoring device are as follows: 1. Reliable: The voltage input adopts a high voltage isolation module (2000V, response time ≤ 2 μ S. The current input adopts an alternating current clamp (0-50kHz, 0-5Arms) to isolate the input signal from the measurement system. this
Release time: March 27, 2020 Hits: 76
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The main indicators of power quality monitoring devices include voltage deviation, frequency deviation, three-phase voltage imbalance, voltage fluctuation and flicker, harmonics in public power grids, and harmonics between public power grids. China has also issued six corresponding standards for power quality, namely: GB/T12325-20
Release time: April 8, 2020 Number of clicks: 112
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Basic introduction of power quality monitoring device: 1. Characteristics of the device: It adopts DSP+ARM9 as the core, and DSP has strong data processing ability to complete data collection and calculation. The core hardware is at the domestic level. Used for data statistics, display, storage, and pressing
Release time: April 17, 2020 Hits: 54
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Test analysis of power quality monitoring instruments: 1. Technical advantages: voltage and current measurement accuracy meets industry standards, reaching 0.1%; Capture, trigger, record and alarm transient events such as voltage dips, voltage surges, short-term voltage interruptions, and surge currents, the world's first wave recording analysis of transient events
Release time: April 27, 2020 Number of clicks: 42
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Key points for using power quality monitoring instruments in power systems: 1. Before use, the instruments must be powered on for 15 minutes; Pay attention to preventing vibration and impact, and do not use in areas with excessive dust and harmful gases; The input wire should not be too long. If the input end of the measured signal is too long, please try using twisted pair shielded wire; if
Published on June 9, 2020 Hits: 82
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Basically similar, the specific parameters depend on the BS803 series of power parameters and power quality monitoring devices, which have various functions such as power quality monitoring, power metering, lightning overvoltage monitoring, communication protocol conversion, etc., making this device flexible in various environments such as intelligent buildings, substations, power plants, etc. widely
Release time: July 30, 2020 Hits: 53
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The power quality monitoring device is mainly installed at the front-end of the booster grid connection, which can continuously monitor the power quality of each booster station and upload the collected data to the backend server of the main station through the network. The power quality monitoring device is used to analyze and manage the power quality of each booster station, achieving the following functions:
Published on August 11, 2020 Hits: 37
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In the early days of power quality monitoring equipment rooms, 220V AC power was usually rectified to charge the 48V battery pack, which directly supplied power to the programmable switch. With the application of computer networks and communication networks in telecommunications rooms, it is necessary to provide high-quality 220V AC power supply. Due to the existing 48V battery pack, batteries are usually used
Release time: April 23, 2019 Number of clicks: 63
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With the vigorous development of China's national economy, the power load has sharply increased, especially the continuous growth of impulsive and nonlinear load capacity, causing power quality problems such as waveform distortion, voltage fluctuations and flicker, and three-phase imbalance in the power grid& N
Release time: April 23, 2019 Number of clicks: 101
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems. It includes single-phase variable frequency power supply and three-phase variable frequency power supply
Release time: April 23, 2019 Number of clicks: 87
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What exactly does power quality monitoring equipment do? Power quality mainly includes the quality of voltage, frequency, and waveform. Online monitoring device for power quality
Release time: April 23, 2019 Number of clicks: 47
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The main purpose of installing power quality monitoring devices in power grids is to
Release time: April 23, 2019 Number of clicks: 63
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The main purpose of the power quality monitoring device is to measure and analyze the AC power quality supplied by the public power grid to the user's receiving end. The measurement and analysis indicators include power supply frequency deviation, power supply voltage deviation, power supply voltage fluctuation and flicker, allowable imbalance of three-phase voltage in power supply, and application of wavelet in power grid harmonics
Release time: August 24, 2019 Number of clicks: 48
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What are the functions of the power system power quality monitoring instrument? 1. Power quality parameter monitoring: capable of measuring the voltage, current, and frequency of three-phase three wire and three-phase four wire (three voltage, four current), and recording their changing trends; The three-phase active power and apparent power of a three-phase four wire electrical system
Release time: September 4th, 2019 Number of clicks: 162
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The function of the power quality monitoring device system: 1. Terminal monitoring unit: completed by the power quality monitoring instrument. 2. Communication service system: mainly composed of monitoring instrument communication system, communication server, and communication module, where the monitoring communication system is responsible for receiving communication server instructions, parsing instructions, and searching for the required number of packages
Release time: September 12, 2019 Number of clicks: 43
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The difference between power system power quality monitoring instruments and analyzers: Power quality analyzers are industry measurement tools that record and analyze power quality issues in the power grid. They can capture common power quality issues such as harmonics, voltage fluctuations, flicker, power, and three-phase imbalance at fault sites
Release time: September 25th, 2019 Hits: 91
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The purpose and characteristics of the power quality monitoring device: 1. Main purpose: to measure and analyze the AC power quality supplied by the public power grid to the user end, including frequency deviation, voltage deviation, voltage fluctuation and flicker, allowable three-phase voltage imbalance, and grid harmonics; application
Release time: October 23, 2019 Number of clicks: 46
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What are the measurement methods for power quality monitoring devices? 1. Regular inspections. Mainly suitable for situations where it is necessary to master power quality without continuous testing, or where continuous online monitoring conditions are not available. Distribution points for residential, commercial, and small factory power supply systems
Release time: November 11, 2019 Hits: 79
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What are the functions of power quality monitoring devices? 1. Display function. The device panel is equipped with a large screen LCD display, which displays real-time data of the main power quality monitoring indicators in a graphical manner; Set up functions. The device hardware clock can be set, and monitoring parameters can be set, modified, and
Release time: December 14, 2019 Hits: 56
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What are the characteristics of power system power quality monitoring instruments? 1. Passive filters: Passive filters in power systems have advantages such as low cost, simple structure, reliable operation, and convenient maintenance. They are currently the main methods used for harmonic suppression and reactive power compensation in power supply and consumption systems. But it exists
Release time: December 25th, 2019 Hits: 90
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Technical indicators of power quality monitoring device: 1. Frequency measurement: measurement range: 45-55Hz, center frequency 50Hz, measurement conditions: signal fundamental component not less than 80% F S; Measurement error: ≤ 0.02Hz; transport
Published on January 14, 2020 Hits: 79
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Precautions for the operation of power quality monitors: 1. The operation and maintenance of power quality monitors should be carried out by competent professionals. The voltage at the test site can reach tens of thousands of volts, and the testing personnel should strictly follow all preventive measures. There should be obvious and clear warning signs in the experimental area, and any personnel on site should
Published on: February 8, 2020 Hits: 114
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Power system power quality monitoring instrument: Power quality refers to the quality of AC power supplied to the user through the public power grid. Generally speaking, it refers to the quality of electricity in the power grid line. Power quality issues are mainly caused by the terminal load side. For example, impulsive reactive loads can generate voltage in the power grid
Published on February 18, 2020 Hits: 81
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1. Terminal monitoring unit: completed by the power quality monitoring device; Communication service system: mainly composed of a monitoring instrument communication system, a communication server, and a communication module. The monitoring communication system is responsible for receiving communication server instructions, parsing instructions, searching and packaging the required data, and uploading them to the communication server through the communication module; Communication service
Release time: July 3, 2020 Hits: 33
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1. Preventive investigation of equipment or system failure causes, by monitoring power quality parameters, internal faults or system defects of the equipment or system can be discovered. System planning, new user access or operation management: Both power system planning and new user access to the power supply system need to consider the background power quality level to determine whether the equipment needs to adopt electricity
Release time: July 24, 2020 Hits: 46
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During the operation of the power system, the increasing impact of power quality issues has brought significant harm to the stability of the power grid operation. In the case of rapid changes in the effective value of voltage, voltage fluctuations occur. The waveform under voltage fluctuations belongs to the amplitude modulation wave of power frequency voltage, so it is necessary to extract the fluctuation signal in order to accurately
Release time: August 5th, 2020 Number of clicks: 36
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1. Unified control: The active filtering unit directly controls the switching of traditional filtering compensation units to avoid capacity offset between the two; Multiple combination methods: For different working conditions, active filters can be combined with co compensating capacitors, sub compensating capacitors, and intelligent capacitors; Low self loss: Compared to pure power electronic solutions, most of the
Published on August 13, 2020 Hits: 31
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1. The power quality monitoring device is mainly installed at the front end of the booster grid connection, which can continuously monitor the power quality of each booster station and upload the collected data to the backend server of the main station through the network. Real time data display: When on-site duty personnel conduct duty inspections, they can view the power quality data of each booster station in real time, which can efficiently and accurately monitor the power quality of each booster station before grid connection
Published on October 23, 2020 Hits: 31
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During the operation of the power quality monitoring device system, the increasing impact of power quality issues has brought significant harm to the stability of the power grid operation. In the case of rapid changes in the effective value of voltage, voltage fluctuations occur. The waveform of voltage fluctuations belongs to the amplitude modulation wave of power frequency voltage, so it is necessary to extract the fluctuation signal in order to accurately achieve voltage fluctuations
Published on December 3, 2020 Hits: 107
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1. Based on reference to relevant international standards, combined with China's actual development level and experience, some published standards will be modified and supplemented. For example, the current "Harmonics in Public Power Grid of Electric Energy Quality" focuses on how to refine the harmonic limits of various levels of voltage in the power grid, regulate the inter harmonic limits and their measurement, and how to measure harmonics in different changing states in the standard
Release time: December 25, 2020 Hits: 72
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1. The power quality monitoring device is a high-performance multifunctional power quality testing and analysis instrument. Adopting DSP+ARM+CPLD core, 5.7 "large screen LCD (320 × 240 dot matrix display screen, making the structure more compact and functions more powerful. Measurement and analysis of the AC power quality supplied by the public power grid to the user end, including frequency deviation and voltage deviation
Release time: March 2, 2021 Number of clicks: 68
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With the rapid development of the national economy and the initial formation of the electricity market, power quality has attracted high attention from the power sector. In order to take reasonable measures to improve power quality and establish an analysis system for power system power quality monitoring instruments, it is necessary to correctly detect, evaluate, and classify power quality. On the one hand, impulse loads and nonlinear loads can cause waveform distortion and voltage sags
Release time: March 12, 2021 Hits: 24
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The power quality monitoring device has GPRS wireless transmission function and remote transmission function, which can obtain real-time data of various monitoring points anytime and anywhere. Through remote control technology, it can modify settings and perform special tests on any monitoring point at any time. You can view the data recorded by ZS3590 anywhere and at any time, and perform detailed analysis on the upper computer
Release time: April 1st, 2021 Hits: 63
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1. The procedural management of standard formulation has been implemented. After the issuance of the new "General Requirements for Power Quality Monitoring Equipment" in 2006, a large number of power supply enterprise customers visited, 80% of which stated that they would not follow this standard when planning power quality monitoring systems. This reflects the failure of this standard to conduct extensive, scientific research, and information collection during project initiation and implementation
Release time: April 22, 2021 Hits: 42
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1. The procedural management of standard formulation has been implemented. After the issuance of the new "General Requirements for Power Quality Monitoring Equipment" in 2006, a large number of power supply enterprise customers visited, and 80% of enterprise customers stated that they would not follow this standard when planning power system power quality monitoring equipment. This reflects the lack of extensive, scientific research and information in the project initiation and implementation of this standard
Release time: May 13, 2021 Hits: 42
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1. The nonlinear problem of power system components. The power system power quality monitoring instrument mainly includes: harmonics generated by the generator; Harmonics generated by transformers; Harmonics generated by direct current transmission; The amplification effect of transmission lines, especially ultra-high voltage transmission lines, on harmonics. In addition, there are factors such as parallel capacitor compensation devices in substations that affect harmonics, among which DC transmission is currently
Release time: May 25th, 2021 Hits: 84
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The power quality monitoring device is installed and operated on the testing site for a long time, transmitting data in real-time, so it is called "online". Capable of measuring voltage, current, power, harmonics, flicker (some power analyzers can); Simple waveform viewing and analysis, saving data; The voltage is generally within 1000V, and the current can be measured by the current sensor. The power quality analyzer is
Release time: July 6, 2021 Hits: 71
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1. The power quality monitoring device mainly monitors the power quality status of public power grids or power users. Voltage deviation, according to the national standard GB/T12325-2008 "Power Quality - Voltage Deviation of Power Supply", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; The allowable deviation of three-phase power supply voltage for 10kV and below is
Release time: July 27, 2021 Hits: 99
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1. Requirement: For power quality testing conducted in accordance with GB/T29319-2012 "Technical Regulations for Connecting Photovoltaic Power Generation Systems to Distribution Networks", the testing and measurement equipment includes voltage transformers, current transformers, and data acquisition devices. The accuracy requirements for power quality monitoring devices require that the channel bandwidth of the data acquisition device should not be less than 10MHz. Power quality measurement equipment
Release time: August 27, 2021 Hits: 219
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The power quality monitoring device mainly consists of on-site monitoring layer, communication transmission layer, and data management layer. The networking methods include three modes: network cable, fiber optic, and wireless. On site monitoring layer: Install various types of electrical energy and power quality monitoring equipment on site, and require communication functions. Communication transmission layer: The device responsible for data communication transmission in order to transmit the data collected by monitoring layer devices to the server
Release time: September 16, 2021 Hits: 87
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems, including single-phase variable frequency power supplies, three-phase variable frequency power supplies, etc. Variable frequency power supply is a type of electronic device device that has strict limitations not only on the installation environment, but also on variable frequency
Release time: October 11, 2021 Hits: 54
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To improve the power quality of the power grid, accurate monitoring and analysis of power quality should be carried out first, measuring the power quality level of the power grid, and analyzing and judging the causes of various power quality problems, providing a basic basis for improving power quality. 10KV distribution network is a common type of distribution network in China, and in the power grid, 10KV distribution network serves as the distribution network for power users
Release time: November 10, 2021 Hits: 59
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The output power of photovoltaic power generation devices varies with natural factors such as sunlight, weather, season, temperature, etc. The output power is unstable, especially when the output power changes significantly, which can cause voltage fluctuations and flicker at the system access point. The photovoltaic power generation system converts solar energy into direct current energy through photovoltaic modules, and then converts it into alternating current energy through inverters. During the conversion process, a large amount of energy is generated
Published on January 13, 2022 Hits: 82
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The series resonance of power quality monitoring devices, as the name suggests, refers to the phenomenon where the terminal voltage and total current of the circuit are in phase in a series circuit of resistors, inductors, and capacitors. This phenomenon is called series resonance. The characteristic is that the circuit is purely resistive, with the terminal voltage and total current in phase. At this time, the impedance is small, the current is high, and the inductance and capacitance may produce a voltage many times larger than the power supply voltage
Release time: February 8, 2022 Hits: 128
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1. The three-phase voltage imbalance is specified in the national standard GB/T15543-2008 "Power Quality - three-phase voltage imbalance": the allowable value of the normal voltage imbalance at the public connection point of the power quality monitoring device is 2%, and it cannot exceed 4% in a short time. For each user of a public connection point, the allowable value for causing voltage imbalance at that point is generally 1.3%, and should not be exceeded for short periods of time
Published on February 17, 2022 Hits: 110
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The power quality monitoring device, also known as the harmonic power monitoring device, is a high-performance multifunctional power quality testing and analysis instrument. Mainly solves the rapid increase in power load, especially the continuous growth of impulsive and nonlinear load capacity, which leads to waveform distortion, voltage fluctuation and flicker, and three-phase imbalance in the power grid. Suitable for 220KV, 110KV
Release time: March 31, 2022 Hits: 99
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems. It includes single-phase variable frequency power supply, three-phase variable frequency power supply, etc. Variable frequency power supply is a type of electronic device device that not only has strict limitations on the installation environment, but also
Release time: April 11, 2022 Hits: 48
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The power grid is composed of five links: "generation, transmission, transformation, distribution, and utilization". As the "distribution and utilization" link on the user side, it consumes 80% of the total electrical energy. With the development of social economy, impulsive, nonlinear, and unbalanced loads such as electrified railways, arc furnaces, and frequency converters are increasingly being used in power applications. Power quality issues such as harmonics, negative sequence, flicker, and voltage transients directly affect power quality
Release time: May 5th, 2022 Hits: 45
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Yes, it is generally necessary to install power quality monitoring devices. Adopting DSP+ARM+CPLD core, 5.7 "large screen LCD (320 × 240 dot matrix display screen, making the structure more compact and functions more powerful. The main purposes are as follows: 1. Measurement and analysis of the AC power quality supplied by the public power grid to the user end, including frequency deviation, voltage deviation, and electrical
Release time: May 16, 2022 Hits: 76
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The power quality monitoring device mainly includes the quality of voltage, frequency, and waveform. Mainly measuring voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics and voltage asymmetry, imbalance, etc. Monitoring power supply reliability is also an important task. Power supply reliability refers to the ability of the power supply system to continuously supply power, and is an important indicator for assessing the power quality of the power supply system, reflecting the impact of the power industry on the national economy
Published on September 14, 2022 Hits: 67
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In recent years, with the rapid development of information technology, the proportion of sensitive loads in the power system load has significantly increased for computer and microprocessor based electrical equipment, as well as various power electronic devices. Their requirements for power quality monitoring devices are more stringent than general electrical equipment, resulting in voltage sags, which have become an important power quality monitoring factor affecting the stable operation of electrical equipment
Release time: September 19, 2022 Hits: 34
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The power system power quality monitoring instrument can measure and analyze the AC power quality supplied by the public power grid to the user, including frequency deviation, voltage deviation, voltage fluctuation and flicker, allowable three-phase voltage imbalance, and grid harmonics. Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals. Measurement and analysis of the impact of various electrical equipment on the power quality of the public power grid under different operating conditions
Release time: October 24, 2022 Hits: 98
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The power quality monitoring device has GPRS wireless transmission function and Ethernet remote transmission function, which can obtain real-time data of each monitoring point anytime and anywhere. It can also modify and set any monitoring point and perform special testing at any time through remote control technology. View the data recorded by ZS3590 anywhere and at any time, and conduct detailed analysis on the upper computer
Release time: December 15, 2022 Hits: 33
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The power system power quality monitoring instrument is a network for power quality supervision and detection in the power grid, and is basically the main equipment. The initial devices have many problems in data storage, data transmission, and background statistical analysis functions. Regarding the current usage of harmonic monitoring and analysis devices in China, as well as the problems encountered during the operation of the devices
Release time: August 31, 2020 Hits: 58
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The power system power quality monitoring instrument refers to the mode of comprehensive automation in substations, fully utilizing existing network and communication resources to achieve data rate management mode, achieving full sharing of monitoring data, and fully utilizing the resources of the power MIS system to achieve reliable connection between the real-time monitoring system and the power MIS system& Nb
Published on September 10, 2020 Hits: 33
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1. The procedural management of standard formulation has been implemented. After the issuance of the new "General Requirements for Power Quality Monitoring Equipment" in 2006, a large number of power supply enterprise customers visited, and 80% of them stated that they would not follow this standard when planning power quality monitoring equipment systems. This reflects the lack of extensive, scientific research, and information in the initiation and implementation of this standard
Release time: October 15, 2020 Hits: 38
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Photovoltaic power generation is greatly affected by external factors, with significant fluctuations in output power, which can easily cause a series of power quality issues such as voltage fluctuations and voltage flicker. Among the basic equipment of photovoltaic power generation, there is an important nonlinear device, the inverter, which can cause the generation of harmonics, which can cause pollution to the power grid and affect the quality of power. Therefore, photovoltaic power stations need to install power quality
Release time: November 17, 2020 Hits: 63
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Before using the power quality monitoring device, the first thing to solve is why it needs to be monitored, what goals are expected to be achieved, and what key points should be paid attention to during implementation. Because these contents will indeed determine what analysis methods should be adopted, what system architecture should be adopted, and what software and hardware platforms should be used during the implementation process. For this reason, we are in charge of
Published on December 29, 2020 Hits: 49
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For photovoltaic power generation, users are not only users of electricity, but also producers. Due to environmental impacts, photovoltaic power generation has high harmonic content and unstable power generation, all of which cause grid pollution and affect power quality. Therefore, in order to prevent serious pollution of power quality, the country has strict standards for photovoltaic power generation, and photovoltaic power stations must be installed in parallel with grid points when connected to the power grid
Published on February 24, 2021 Hits: 121
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1. Basically similar, depending on the parameters. The power quality monitoring device has various functions such as power quality monitoring, power metering, lightning overvoltage monitoring, communication protocol conversion, etc., making it flexible for application in various environments such as intelligent buildings, substations, power plants, etc. Widely used in fields such as energy conservation and environmental protection, power, and industry. 2. The device uses dual ARM and DSP
Release time: March 4th, 2021 Hits: 308
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1. The power system power quality monitoring instrument has fast and accurate data processing, powerful functions, greatly improving testing efficiency and level, making the system more integrated and stable. It is equipped with a dedicated watchdog reset circuit, and the device can automatically reset in strong interference environments to ensure normal operation. Adopting a large LCD screen with a full Chinese interface and menu system, easy to operate
Release time: March 16, 2021 Hits: 47
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The power system power quality monitoring instrument, also known as harmonic power monitoring device, is a high-performance multifunctional power quality testing and analysis instrument. Mainly solves the rapid increase in power load, especially the continuous growth of impulsive and nonlinear load capacity, which leads to waveform distortion, voltage fluctuation and flicker, and three-phase imbalance in the power grid. Suitable for 220KV, 11
Release time: May 7, 2021 Hits: 82
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1. Measurement and analysis of the AC power quality supplied by the public power grid to the user end. Measurement and analysis of the power quality monitoring device include frequency deviation, voltage deviation, voltage fluctuation and flicker, allowable three-phase voltage imbalance, and grid harmonics. Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals. Measure and analyze the impact of various electrical equipment on the power quality of the public power grid under different operating conditions. two
Release time: May 18, 2021 Hits: 64
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Power quality mainly includes the quality of voltage, frequency, and waveform. The power quality monitoring device mainly measures voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics, voltage asymmetry, imbalance, etc. Monitoring the reliability of power supply is also one of the important tasks. Power supply reliability refers to the continuous power supply ability of the power supply system, which is an important indicator for assessing the power quality of the power supply system and reflects the
Published on June 29, 2021 Hits: 123
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The power quality monitoring device can divide photovoltaic power stations into three categories based on voltage levels: firstly, photovoltaic power stations connected to the power grid with a voltage level of 66KV or above are called large-scale photovoltaic power stations; The second is that photovoltaic power stations connected to the power grid with a voltage level of 10-35KV are called medium-sized photovoltaic power stations; The third is a photovoltaic power station connected to a low-voltage power grid with a voltage level of 0.4kV
Release time: July 29, 2021 Hits: 77
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1. The power quality monitoring device can monitor voltage fluctuations and flickers. According to the national standard GB/T12326-2008 "Power Quality Voltage Fluctuations and flickers", the standard stipulates that the long-term (2-hour) flicker value Plt at the public connection point of the power system meets: ≤ 110kV, Plt=0.1 At 110kV, Plt=0
Published on September 22, 2021 Hits: 87
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems. It includes single-phase variable frequency power supply, three-phase variable frequency power supply, etc. Variable frequency power supply is a type of electronic device device that not only has strict limitations on the installation environment, but also
Release time: October 14, 2021 Hits: 43
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The selection of power quality monitoring devices requires special customization based on on-site configuration requirements, such as the size of the device, the number of monitoring channels, and so on. So how to correctly inspect and accept power quality monitoring devices after purchasing them is a major issue for users. The acceptance work of power quality monitoring devices should be divided into three steps in chronological order: factory acceptance, on-site acceptance, and practical acceptance. Only
Release time: November 15, 2021 Hits: 92
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Although traditional monitoring theories have tended to improve, with the continuous deepening of practical applications, the shortcomings of various algorithms are constantly exposed. Traditional single monitoring methods are no longer able to adapt to the increasingly complex requirements of harmonic monitoring. New methods are introduced on the basis of existing algorithms to optimize certain calculation processes, or several methods are combined to overcome the shortcomings of single monitoring algorithms
Release time: December 16, 2021 Hits: 69
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Prevention and identification of equipment or system failure causes, by using power quality monitoring devices to identify internal faults or system defects in the equipment or system. System planning, new user access or operation management: Both power system planning and new user access to the power supply system need to consider the background power quality level to determine whether equipment needs to adopt power quality control measures, protection configurations, etc. New equipment
Release time: January 7, 2022 Hits: 117
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Variable frequency power supply is a device that uses variable frequency technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems, including single-phase variable frequency power supply, three-phase variable frequency power supply, etc. Variable frequency power supply is a type of electronic device device that not only has strict limitations on the installation environment, but also
Release time: January 17, 2022 Hits: 58
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With the development of modern science and technology, power electronics technology is widely used. Electric energy still plays an essential role in human production and life, and there are many factors that affect power quality. Factors such as high order harmonics, voltage fluctuations, flicker, imbalance, equipment errors, communication interference, etc. not only reduce the power supply and consumption equipment, but also threaten the entire power system
Release time: March 3, 2022 Hits: 188
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In recent years, with the rapid development of information technology, sensitive loads such as computer and microprocessor based electrical equipment and various power electronic devices have significantly increased in the proportion of power system loads. Their requirements for power quality are more stringent than general electrical equipment. Therefore, voltage sags have become one of the important power quality monitoring issues that affect the stable operation of electrical equipment
Release time: April 14th, 2022 Hits: 95
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According to the voltage level, photovoltaic power stations can be divided into three categories: firstly, photovoltaic power stations connected to the power grid with a voltage level of 66KV or above are called large-scale photovoltaic power stations; The second is that photovoltaic power stations connected to the power grid with a voltage level of 10-35KV are called medium-sized photovoltaic power stations; The third is that photovoltaic power stations connected to a low-voltage power grid with a voltage level of 0.4kV are called small-scale photovoltaic power generation
Release time: April 25th, 2022 Hits: 370
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Terminal monitoring unit: completed by the power quality monitoring device. Communication service system: mainly composed of a monitoring instrument communication system, a communication server, and a communication module. The monitoring communication system is responsible for receiving communication server instructions, parsing instructions, searching and packaging required data, and uploading them to the communication server through the communication module. The communication server is responsible for all power quality monitoring devices
Release time: May 19, 2022 Hits: 33
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The power quality monitoring device is installed and operated on the testing site for a long time, transmitting data in real-time, so it is called "online". Capable of measuring voltage, current, power, harmonics, and flicker. Simple waveform viewing and analysis, data storage, and voltage are generally within 1000V. The current is measured based on the current sensor. The power quality analyzer is a method of analyzing power quality issues in the power grid,
Release time: July 21, 2022 Hits: 57
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1. Passive filters in power systems have the advantages of low cost, simple structure, reliable operation, and convenient maintenance. They are currently the main methods used for harmonic suppression and reactive power compensation in power supply and consumption systems. However, it has drawbacks such as large volume and significant impact on filtering performance by the system. 2. Distribution static compensators are currently available in the United States and Japan
Release time: August 3, 2022 Hits: 60
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As a professional measurement tool that can record and analyze power quality issues in the power grid, the power quality monitoring device can capture common power quality issues such as harmonics, voltage fluctuations, flicker, power, and three-phase imbalance at the fault site, providing performance evaluation and governance decision-making for smart grids in terms of power quality. By implementing the monitoring device and the main station monitoring and analysis software
Release time: August 25th, 2022 Hits: 83
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The series resonance of power quality monitoring devices, as the name suggests, refers to the phenomenon where the terminal voltage and total current of the circuit are in phase in a series circuit of resistors, inductors, and capacitors. This phenomenon is called series resonance. The characteristic of series resonance refers to the pure resistive nature of the circuit, with the terminal voltage and total current in phase. At this time, the impedance is small, the current is high, and a higher voltage may be generated on the inductance and capacitance than the power supply voltage
Release time: September 21, 2022 Hits: 50
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1. There are a large number of nonlinear loads in the power system, including large-scale power electronic application devices (energy-saving devices, frequency conversion equipment, etc.), high-power power traction equipment, DC output devices, electrochemical industrial equipment (rectification of chemical and metallurgical enterprises), electrified railways, steelmaking arc furnaces (AC and DC), rolling mills, elevators, and carbide machines
Release time: October 27, 2022 Hits: 48
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Voltage deviation: According to the national standard GB/T12325-2008 "Power Quality - Voltage Deviation of Power Supply", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; The allowable deviation of three-phase power supply voltage for power quality monitoring devices of 10kV and below is ± 7% of the rated voltage; The allowable deviation of 220V single-phase power supply voltage is
Release time: November 28, 2022 Hits: 39
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The power quality monitoring device mainly monitors the power quality status of public power grids or power users. The main technical indicators for monitoring power quality are as follows: 1. Voltage deviation. According to the national standard GB/T12325-2008 "Power Quality - Supply Voltage Deviation", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; 10k
Release time: December 19, 2022 Hits: 41
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1. The power system power quality monitoring instrument has fast and accurate data processing, powerful functions, greatly improving testing efficiency and level, making the system more integrated and stable. It is equipped with a dedicated watchdog reset circuit, and the device can automatically reset in strong interference environments to ensure normal operation. The voltage input adopts a high-voltage isolation module,
Release time: September 4th, 2020 Number of clicks: 41
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1. Load fluctuation monitoring: Regularly record and store the trend of changes in power parameters such as voltage, current, active power, reactive power, frequency, phase, etc. The adjustment of the power quality monitoring device and dynamic monitoring of the operation process help users solve problems that arise during the adjustment and operation of power equipment. Test and analyze circuit breaker action, transformer overheating, motor burnout, and self
Published on October 21, 2020 Hits: 88
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1. Measurement and analysis of the AC power quality supplied by the public power grid to the user end, and measurement and analysis of the power quality monitoring device: frequency deviation, voltage deviation, allowable three-phase voltage imbalance, and grid harmonics; Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals; Measure and analyze the power quality of various electrical equipment in the public power grid under different operating conditions. 2. Load fluctuation monitoring
Published on December 22, 2020 Hits: 31
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The power system power quality monitoring instrument mainly monitors the power quality status of public power grids or power users. Main technical indicators for power quality monitoring: 1. Voltage deviation: According to the national standard GB/T12325-2008 "Power Quality - Supply Voltage Deviation", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; ten
Release time: February 27, 2021 Hits: 35
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1. Continuous monitoring: monitoring the power quality of important public power supply points in substations. The main technical indicators monitored include power supply frequency, voltage deviation, three-phase voltage imbalance, negative sequence current, active power, grid harmonics, and power factor. Control content: Power supply frequency control has been undertaken by the power dispatch center, and power quality control mainly refers to the control of voltage deviation and three-phase voltage unevenness
Release time: March 10, 2021 Hits: 78
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The power quality monitoring device is installed and operated on the testing site for a long time, transmitting data in real-time, so it is called "online". Capable of measuring voltage, current, power, harmonics, flicker; Simple waveform viewing and analysis, saving data; The voltage is generally within 1000V, and the current can be measured by the current sensor. Power quality monitoring uses power quality standards as the limit value,
Release time: March 30, 2021 Hits: 50
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1. Terminal monitoring unit: completed by the power quality monitoring device; Communication service system: mainly composed of a monitoring instrument communication system, a communication server, and a communication module. The monitoring communication system is responsible for receiving communication server instructions, parsing instructions, searching and packaging the required data, and uploading them to the communication server through the communication module; The communication server is responsible for all aspects, including power quality monitoring
Release time: April 20th, 2021 Hits: 70
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1. The power system power quality monitoring instrument measures and analyzes the AC power quality supplied by the public power grid to the user end, including frequency deviation, voltage deviation, allowable three-phase voltage imbalance, and grid harmonics; Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals; Measure and analyze the power quality of various electrical equipment in the public power grid under different operating conditions. 2. Load
Release time: May 11, 2021 Hits: 35
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1. Changes in the composition of power loads: There are a large number of nonlinear loads in the power system, including large-scale power electronic application devices, high-power power traction equipment, DC output devices, electrified industrial equipment, electrified railways, steelmaking arc furnaces, rolling mills, elevators, calcium carbide machines, induction heating furnaces, and other nonlinear loads. Important indicators of power quality monitoring devices: voltage quality
Release time: May 20th, 2021 Hits: 43
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1. The voltage deviation of the power quality monitoring device is specified in the national standard GB/T12325-2008 "Power Quality Supply Voltage Deviation": the sum of the positive and negative deviations of 35kV and above supply voltage shall not exceed 10% of the rated voltage; The allowable deviation of three-phase power supply voltage of 10kV and below is ± 7% of the rated voltage; Permissible deviation of 220V single-phase power supply voltage
Published on June 22, 2021 Hits: 82
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Measurement and analysis of the AC power quality supplied by the public power grid to the user's receiving end. The indicators measured and analyzed by the power quality monitoring device include power supply frequency deviation, power supply voltage deviation, power supply voltage fluctuation and flicker, allowable imbalance of power supply three-phase voltage, and the application of wavelet transformation to measure and analyze the harmonics of non-stationary time-varying signals in the power grid. Measure and analyze the impact of various electrical equipment on different operating states
Release time: July 1st, 2021 Hits: 32
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1. Terminal monitoring unit: completed by the power quality monitoring device. Equipped with GPRS wireless transmission function and Ethernet remote transmission function, real-time data of each monitoring point can be obtained anytime and anywhere. Through remote control technology, it is possible to modify and set any monitoring point at any time and perform special tests. 2. Communication service system: mainly composed of monitoring instrument communication system and communication
Release time: July 23, 2021 Hits: 108
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The power quality monitoring device, also known as the harmonic power monitoring device, is a high-performance multifunctional power quality testing and analysis instrument. Mainly solves the rapid increase in power load, especially the continuous growth of impulsive and nonlinear load capacity, which leads to waveform distortion, voltage fluctuation and flicker, and three-phase imbalance in the power grid. Suitable for 220KV, 110KV
Release time: August 24, 2021 Hits: 35
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. Power quality monitoring devices are widely used in power systems, including single-phase variable frequency power supplies, three-phase variable frequency power supplies, etc. Variable frequency power supply is a type of electronic device device that has strict requirements for not only the installation environment
Published on September 2, 2021 Hits: 31
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1. Measure and analyze the AC power quality supplied by the public power grid to the user end. The power quality monitoring device measures and analyzes frequency deviation, voltage deviation, voltage fluctuation and flicker, allowable three-phase voltage imbalance, and grid harmonics. Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals. Measure and analyze the impact of various electrical equipment on the power quality of the public power grid under different operating conditions. two
Release time: September 25th, 2021 Hits: 89
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The power quality monitoring device adopts a high-performance multi-core platform and embedded operating system, and measures various power quality indicators according to the measurement methods specified in IEC61000-4-30 "Testing and Measurement Techniques - Power Quality Measurement Methods". It includes harmonic analysis, waveform sampling, voltage sag/sag/interruption, flicker monitoring, voltage imbalance monitoring, and events
Release time: December 9, 2021 Hits: 65
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In the development process of power quality monitoring devices, the application of artificial skills has achieved results, and the overall improvement of power quality management technology has optimized the monitoring of power quality. Through the neural network technology, fuzzy sharp acid control unit, and evolutionary computation control unit technology in artificial intelligence technology, the overall monitoring of power quality has been achieved. The analysis of electricity quality is electricity
Release time: January 10, 2022 Hits: 41
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The standard monitoring system has a CAD single line diagram to display the wiring situation of the medium and low voltage distribution network. The massive system has the function of multi screen switching and screen navigation, while the dispersed power distribution system has the main screen of the system in a spatial and geographical plane. The main screen of the power quality monitoring device can directly display the operating status of each circuit, and has the function of coloring the circuit's live, non live, and fault conditions
Published on February 14, 2022 Hits: 95
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To improve the power quality of the power grid, precise monitoring and analysis of power quality should be carried out, measuring the power quality level of the power grid, and analyzing and judging the causes of various power quality problems, providing a basic basis for improving power quality. The 10KV distribution network is a common type of distribution network in China, and in the power grid, the 10KV distribution network serves as the distribution network for power users,
Release time: March 7, 2022 Hits: 107
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The power system power quality monitoring instrument has a CAD single line diagram to display the wiring situation of medium and low voltage distribution networks. The massive system has the function of multi screen switching and screen navigation, while the dispersed power distribution system has the main screen of the system in a spatial and geographical plane. The main screen can directly display the operating status of each circuit, and has the function of coloring the circuit with power, non power, and faults. Main electricity
Release time: April 18, 2022 Hits: 39
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The power quality monitoring device mainly consists of on-site monitoring layer, communication transmission layer, and data management layer. There are three modes of networking: cable, fiber optic, and wireless. On site monitoring layer: Install various types of electrical energy and power quality monitoring equipment on site, and require communication functions. Data management layer: The process of storing, parsing, and applying collected data, including server setup and various software
Release time: April 28, 2022 Hits: 67
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1. The generation of harmonics is in the distribution system, and the frequency of electric waves is an integer multiple of the fundamental frequency 50Hz, all of which are higher-order harmonics. High order harmonics can cause distortion of the fundamental waveform of the system. The equipment and loads that generate higher-order harmonics are called higher-order harmonic sources or harmonic sources, and all nonlinear loads are harmonic sources. When the distribution network supplies power to nonlinear loads, these devices are transmitting
Published on June 22, 2022 Hits: 53
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The main technical indicators of the power quality monitoring device for important public power supply points in substations include power supply frequency, voltage deviation, three-phase voltage imbalance, negative sequence current, active power, grid harmonics, and power factor. Control content: Power supply frequency control has been undertaken by the power dispatch center, and power quality control mainly refers to voltage deviation, three-phase voltage imbalance, grid harmonics, etc
Release time: July 4th, 2022 Hits: 70
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The power quality monitoring device has GPRS wireless transmission function and remote transmission function, which can obtain real-time data of various monitoring points anytime and anywhere. Through remote control technology, it can modify settings and perform special tests on any monitoring point at any time. You can view the data recorded by ZS3590 anywhere and at any time, and perform detailed analysis on the upper computer
Release time: July 25th, 2022 Hits: 104
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1. Voltage deviation, according to the national standard GB/T12325-2008 "Power Quality - Voltage Deviation of Power Supply", the sum of the positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; The allowable deviation of three-phase power supply voltage of 10kV and below is ± 7% of the rated voltage; The allowable deviation of 220V single-phase power supply voltage is -1% of the rated voltage
Release time: August 8, 2022 Hits: 64
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Using benchmark algorithms, there is no approximate calculation for harmonics, three-phase imbalance, flicker, and fluctuations. High precision A/D (16 bit) is used, with simultaneous sampling and a collection rate of 12.8kHz, which meets the requirements of national standard A-level instruments. The power quality monitoring device has a built-in 512M memory, which stores data in units of 5 minutes. Each channel can continuously store historical data for 4 months
Release time: September 7, 2022 Hits: 43
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In the power quality monitoring device, voltage sag refers to a decrease of 10% to 90% of the rated voltage or current caused by a system malfunction or interference for a user duration of 0.5 cycles to 1 minute. When the amplitude is between 0.1p.u. and 0.9p.u. (per unit value), the system frequency remains at the nominal value and then returns to normal levels. It is widely believed internationally that electricity
Release time: September 26, 2022 Hits: 51
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According to the voltage level, photovoltaic power stations can be divided into three categories: firstly, photovoltaic power stations connected to the power grid with a voltage level of 66KV or above are called large-scale photovoltaic power stations; The second is that photovoltaic power stations connected to the power grid with a voltage level of 10-35KV are called medium-sized photovoltaic power stations; The third is that photovoltaic power stations connected to a low-voltage power grid with a voltage level of 0.4kV are called small-scale photovoltaic power generation
Release time: December 22, 2022 Hits: 24
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Using a benchmark algorithm, there is no approximate calculation for harmonics, three-phase imbalance, flicker, and fluctuations. High precision A/D (16 bit) is used, with simultaneous sampling and a collection rate of 12.8kHz. The power quality monitoring device has a built-in 512M memory, which stores data in units of 5 minutes. Each channel can continuously store historical data for 4 months. Supports TCP/IP, R
Release time: January 4th, 2023 Hits: 27
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The power quality monitoring device mainly includes the quality of voltage, frequency, and waveform. It mainly measures voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics and voltage asymmetry, imbalance, etc. Monitoring the reliability of power supply is also an important task. Power supply reliability refers to the continuous power supply ability of the power supply system, which is an important indicator for assessing the power quality of the power supply system and reflects the impact of the power industry on the country
Release time: January 6, 2023 Hits: 23
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Power quality mainly includes the quality of voltage, frequency, and waveform. The power quality monitoring device mainly measures voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics, voltage asymmetry, imbalance, etc. Monitoring the reliability of power supply through power quality monitoring is also one of the important tasks. Power supply reliability refers to the ability of the power supply system to continuously supply power, and is an important indicator for assessing the power quality of the power supply system
Release time: January 28, 2023 Hits: 17
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In recent years, with the widespread use of nonlinear loads represented by power electronic devices, various complex and precise electrical equipment represented by microcomputerization has become increasingly popular, and users' requirements for power quality have been continuously increasing. This issue has attracted high attention from power departments at all levels, and the country has also issued relevant technical standards. Qualified power quality refers to the electricity provided to sensitive equipment and
Published on: February 6, 2023 Hits: 19
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The power quality monitoring device mainly consists of on-site monitoring layer, communication transmission layer, and data management layer. The networking methods include three modes: network cable, fiber optic, and wireless. On site monitoring layer: Install various types of electrical energy and power quality monitoring equipment on site, and require communication functions. Communication transmission layer: The device responsible for data communication transmission in order to transmit the data collected by monitoring layer devices to the server
Release time: February 27, 2023 Hits: 38
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With the development of power electronics technology, DC transmission and high-power single-phase rectification technology are widely used in industrial sectors and electrical equipment, such as high-power thyristor devices, switching power supplies, variable frequency speed regulation, etc. These typical nonlinear loads will absorb or inject harmonic currents from the power grid, causing voltage distortion, polluting the power grid waveform, deteriorating power supply quality, and increasing additional losses
Release time: March 9, 2023 Hits: 22
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems. It includes single-phase variable frequency power supply, three-phase variable frequency power supply, etc. Variable frequency power supply is a type of electronic device device that not only has strict limitations on the installation environment, but also
Release time: March 20th, 2023 Hits: 19
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The power quality monitoring device, as seen, is a rectangular chassis. Although its appearance is ordinary, the internal software and hardware are indeed quite complex. The chassis casing adopts a reinforced aluminum alloy unit with special characteristics, and the material is designed to resist strong vibration and interference. It is particularly suitable for harsh environments and can be installed and operated separately on the cabinet. Aluminum alloy is corrosion-resistant, and the surface of the aluminum alloy is treated with anodizing
Release time: April 10th, 2023 Hits: 20
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The power system power quality monitoring instrument is a device used to monitor the power quality in the power system, and its importance cannot be ignored. Power quality refers to the basic attributes of electricity in the power system, such as waveform, frequency, voltage, current, harmonics, capacitance, etc. It directly affects the normal operation of power equipment and the effective utilization of electricity. Firstly, the power quality monitoring instrument can be real-time and accurate
Release time: May 3, 2023 Hits: 21
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The power quality monitoring device is a device that utilizes power technology and computer technology to monitor and analyze the status and operation of the power system. It can conduct real-time and accurate detection and analysis of the power quality of the power grid, monitor parameters such as voltage, current, and frequency, and quickly and accurately detect and locate faults and losses. In modern industrial production, power quality monitoring equipment
Release time: May 11, 2023 Hits: 19
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The power quality monitoring device is a device used to monitor the power quality situation in the power system, which can monitor voltage, current, frequency, power factor, etc. However, due to various reasons, the power quality monitoring device may malfunction, affecting its normal functioning. Therefore, how to quickly detect faults in power quality monitoring devices has become a crucial aspect of power system maintenance
Release time: May 22, 2023 Hits: 23
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The power quality monitoring device is a device used to monitor the status of power quality. In the power system, various electrical equipment require power supply, but poor power quality may cause damage to these equipment and even endanger personal health. Therefore, monitoring power quality has become particularly important. So, how to adjust the sensitivity of the power quality monitoring device? Firstly, we
Release time: July 4th, 2023 Hits: 25
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The power system power quality monitoring instrument is an instrument that can monitor and analyze the power system power quality. Power quality refers to the requirements of power supply equipment and consumers in the power system for power supply, including voltage stability, voltage fluctuations, harmonics, power factor, and power fluctuations. Improving electricity efficiency refers to optimizing and improving the operation of the power system
Release time: August 11, 2023 Hits: 15
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The power quality monitoring device is an instrument and equipment used to monitor and evaluate the power quality in the power system. With the development of the power system and the improvement of power quality requirements for power supply quality, power quality monitoring has become an important demand for power supply enterprises and users. This article will introduce the selection guide for power quality monitoring devices, helping users understand how to choose the equipment that suits them. 1
Release time: September 11, 2023 Hits: 7
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Power quality refers to the stability and waveform roughness of parameters such as voltage, current, and frequency in the power system, which directly affects the operation of the power system and the quality of power utilization. Power quality monitoring refers to the real-time monitoring and evaluation of power quality in the power system. By monitoring power quality, abnormal problems in the power system can be identified and resolved in a timely manner, ensuring that
Release time: September 22, 2023 Hits: 11
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The importance of sensor technology for power quality monitoring devices is very obvious. With the rapid development of industrialization and urbanization, power quality has become a very important issue in the energy field. The development of sensor technology enables power quality monitoring devices to achieve more accurate monitoring and analysis, improving the stability and reliability of power grid operation. Firstly, sensor technology can
Release time: October 17, 2023 Hits: 5
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The power quality monitoring screen is an instrument and equipment used for monitoring and analyzing power quality, widely used in various aspects of the power system, such as power production, transmission and transformation, industrial production, and residential electricity. The power quality monitoring screen has various common functional characteristics, which will be introduced in detail below. 1、 Parameter monitoring function features: 1. Current and voltage monitoring: The power quality monitoring screen can achieve
Release time: November 7, 2023 Hits: 2
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Power quality monitoring equipment is a device used to monitor the power quality in the power grid, and its development trend is influenced by the development of the power system and technological innovation. This article will analyze the future development of power quality monitoring equipment from two aspects of technological innovation. 1. Improvement of measurement accuracy: With the continuous improvement of power system operation requirements, the measurement accuracy of power quality monitoring equipment is proposed
Release time: November 17, 2023 Hits: 3
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The series resonance of power quality monitoring devices, as the name suggests, refers to the phenomenon where the terminal voltage and total current of the circuit are in phase in a series circuit of resistors, inductors, and capacitors. This phenomenon is called series resonance. The characteristic of series resonance refers to the pure resistive nature of the circuit, with the terminal voltage and total current in phase. At this time, the impedance is small, the current is high, and a higher voltage may be generated on the inductance and capacitance than the power supply voltage
Release time: January 9, 2023 Hits: 22
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The power quality monitoring device mainly monitors the power quality status of public power grids or power users. The main technical indicators for power quality monitoring are as follows: 1. Voltage deviation. According to the national standard GB/T12325-2008 "Power Quality - Supply Voltage Deviation", the absolute sum of positive and negative deviations of 35kV and above power supply voltage shall not exceed 10% of the rated voltage; one
Release time: March 2, 2023 Hits: 73
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The power quality testing conducted in accordance with GB/T29319-2012 "Technical Regulations for Connecting Photovoltaic Power Generation Systems to Distribution Networks" includes voltage transformers, current transformers, and data acquisition devices. The accuracy of measurement equipment requires that the channel bandwidth of the data acquisition device should not be less than 10MHz. The power quality monitoring device should comply with GB/T1
Release time: March 13, 2023 Hits: 28
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Variable frequency power supply is a device that uses frequency conversion technology and microelectronics technology to control the power transmission of AC motors by changing the frequency and amplitude of the motor's working power supply. It is widely used in power systems. It includes single-phase variable frequency power supply, three-phase variable frequency power supply, etc. Variable frequency power supply is a type of electronic device device that not only has strict limitations on the installation environment, but also
Release time: March 23, 2023 Hits: 20
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The power system power quality monitor is a device used to detect various power quality issues in the power system. It can effectively monitor parameters such as voltage, current, frequency, and power factor, thereby timely detecting and solving power quality problems. However, the comprehensiveness and accuracy of power quality monitoring instruments in the power system are issues of great concern to users. This article will focus on technology
Release time: May 5th, 2023 Hits: 32
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The power quality monitoring device is an important device that can be used to monitor and analyze power quality issues in the power system, while assisting engineers in fault diagnosis and maintenance work. However, even high-end power quality monitoring devices may malfunction and require timely resolution. Below, we will introduce common troubleshooting methods for power quality monitoring devices in factories.
Release time: May 15th, 2023 Hits: 20
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Solar power generation system, as a new energy generation technology that utilizes light energy to convert electricity, can be used for power supply needs in many fields such as households, enterprises, and public sectors. In today's rapidly developing new energy market, it is increasingly receiving widespread attention. In the construction process of solar power plants, the requirements for power quality are no different from traditional power systems
Published on June 15, 2023 Hits: 23
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With the rapid development of the transportation system, more electromechanical equipment is widely used in fields such as streetlights, subways, buses, and other transportation facilities, and these devices have very high requirements for power quality. The power quality monitoring screen is a device that can monitor and control the power quality in real-time in the transportation system, and can meet the high requirements of the transportation system for power quality. Firstly, electricity
Release time: July 17, 2023 Hits: 10
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The power quality monitoring device is a device used to monitor power quality and plays an important role in the stable operation of the power system. The power quality monitoring device requires high instrument accuracy and accuracy, which is the key to ensuring the accuracy of power quality monitoring data. This article will delve into the accuracy and precision of power quality monitoring devices from two aspects: instrument accuracy and accuracy
Release time: August 8, 2023 Hits: 13
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Power quality monitoring refers to the real-time monitoring and analysis of various indicators of electricity to ensure the stability, reliability, and compliance with corresponding standard requirements of electricity supply. With the continuous development of the power system and the widespread use of electrical equipment, power quality issues have become increasingly prominent, affecting production, operation, and all aspects of people's daily lives. Therefore, power quality monitoring is important
Release time: August 17, 2023 Hits: 13
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Choosing a suitable power system power quality monitoring instrument is a key step in ensuring stable operation of the power system and achieving power quality standards. It is of great significance to choose a suitable power quality monitoring instrument according to the needs of the power system. Below, we will introduce how to choose a suitable power quality monitoring instrument from several aspects such as the requirements, functional characteristics, and technical indicators of power quality monitoring. 1. Electricity quality
Release time: September 8, 2023 Hits: 6
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The key technology of power quality monitoring and evaluation in the application field of power quality monitoring (1) Data acquisition technology: By installing power quality monitoring equipment at key locations, data on power quality parameters in the power supply system, such as voltage, current, harmonics, etc., is collected. Data acquisition technology includes sensor selection, wiring installation, data processing, etc. (2) Data transmission technology: collecting data
Release time: September 19, 2023 Hits: 7
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The power quality monitoring instrument is an important tool in the power system, used for monitoring and diagnosing power quality. With the continuous expansion of the power system scale and the popularization of electrical equipment, the issue of power quality is becoming increasingly prominent. The emergence of power quality monitoring instruments has provided great help for us to solve power system fault diagnosis. Power quality issues refer to the issues of voltage
Release time: October 14th, 2023 Hits: 7
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The power quality monitoring device refers to a device used to detect power quality, which can monitor parameters such as voltage, current, frequency in real-time, and evaluate and analyze power quality. With the continuous advancement of modernization construction, the issue of power quality is receiving more and more attention from people, and power quality monitoring devices are facing continuous development and innovation. This article will discuss the development trend of power quality monitoring devices
Release time: November 14th, 2023 Hits: 1
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In the power quality monitoring device, voltage sag refers to the system frequency remaining at the nominal value and then returning to the normal level when the user's duration drops to 10% -90% of the rated voltage or current within 0.5 cycles to 1 minute due to system faults or interference, with an amplitude of 0.1p.u. -0.9p.u. (per unit value). It is widely believed internationally that electricity
Release time: January 11, 2023 Hits: 18
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The problems of power quality monitoring devices generated by the grid connection of photovoltaic power generation systems mainly include harmonics, voltage fluctuations, flicker, etc., which affect the characteristics of active and reactive power flow, frequency control, etc. 1. Due to factors such as weather, environmental temperature, and installation location of photovoltaic panels, the output power of photovoltaic power plants may vary, even exceeding 10% of the rated power, resulting in
Release time: January 24, 2023 Hits: 17
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There are two assessment items for power supply quality, one is power quality, and the other is power supply reliability. It can be seen that power quality and reliability are two concepts. If not modified, the power quality monitoring device does not measure the reliability of the power supply. As far as I know, there is currently no equipment that can measure the reliability of power supply separately, because no one has counted the reliability of individual users, mostly one
Published on February 13, 2023 Hits: 57
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The power quality monitoring device can measure and analyze the AC power quality supplied by the public power grid to the user end, including frequency deviation, voltage deviation, voltage fluctuation and flicker, allowable three-phase voltage imbalance, and grid harmonics. Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals. Measurement and analysis of the impact of various electrical equipment on the power quality of the public power grid under different operating conditions
Release time: March 6, 2023 Hits: 31
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To improve the power quality of the power grid, it is necessary to accurately monitor and analyze the power quality, measure the power quality level of the power grid, and analyze and judge the reasons for various power quality problems, providing a basic basis for improving power quality. 10KV distribution network is a common type of distribution network in China, and in the power grid, 10KV distribution network serves as the distribution network for power users
Release time: April 17, 2023 Hits: 15
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With the continuous improvement of electrification, the power quality of the power system is increasingly attracting attention. In modern production and life, many devices have very high requirements for power quality. If the power supplier cannot provide the required power quality, it will lead to damage to electrical equipment, system collapse, and even serious accidents. Therefore, it is necessary to use a power system power quality monitoring instrument for electrical energy
Release time: April 27, 2023 Hits: 12
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Power quality monitoring devices play a crucial role in modern power systems. They can monitor various power quality issues in the power system, such as voltage fluctuations, harmonics, flickers, and transients, as well as related equipment failures and energy waste. These issues may affect production efficiency, damage equipment, increase energy costs, and affect the environment, so timely detection and resolution of power grids
Release time: May 18, 2023 Hits: 31
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The power system power quality monitoring instrument is an important device in the power system, which can accurately monitor and analyze the power quality in the power system, help power system managers discover problems in a timely manner, take measures to solve them, and improve the stability and reliability of the power system. However, in practical use, there are also some errors and inaccuracies in the power quality monitoring instrument,
Release time: June 19, 2023 Hits: 26
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Power quality monitoring is the evaluation of power quality by monitoring the power system's power quality indicators, such as voltage, current, frequency, power, etc., in order to identify and solve power quality problems. However, in practical applications, due to the presence of various factors, power quality monitoring devices are often subject to various interferences, which not only reduce their monitoring effectiveness but also have an impact on power supply quality. Therefore, it is necessary to
Published on June 29, 2023 Hits: 15
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Power quality monitoring instrument is an instrument that can monitor power quality. Its main function is to monitor the voltage, current, power and other parameters of power in real-time, providing accurate data support for energy consumption management. With the continuous increase and upgrading of electrical equipment in various fields such as industry, commerce, and housing, the stability of power quality has become an increasingly important issue,
Release time: August 3, 2023 Hits: 11
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Power quality refers to the stability, ripple, harmonic, and other parameters of voltage, current, and other power parameters in the power supply system. The power quality monitoring device is a device used to detect and analyze power quality issues. Choosing a device suitable for power quality monitoring requires consideration of the following aspects: 1. Functional and performance requirements: Different application scenarios require different functions and performance requirements
Release time: August 14th, 2023 Hits: 15
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The power quality monitoring screen is a device used to monitor and evaluate power quality, which can detect power supply quality in real-time and provide corresponding data and alarms. It plays a crucial role in the power system, helping users understand the stability and reliability of the power grid. Power quality refers to the fluctuation and distortion of parameters such as voltage, current, and frequency in the power supply system. Good electricity
Release time: September 5th, 2023 Hits: 11
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The monitoring and evaluation of power quality is to ensure that the power supply system can stably and reliably provide users with high-quality electricity, and to avoid adverse effects of power quality issues on users. This article will explore how to achieve power quality monitoring and evaluation. 1、 The Basic Principles and Methods of Power Quality Monitoring 1.1 The Basic Principles of Power Quality Monitoring
Release time: September 14th, 2023 Hits: 9
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Portable power quality monitoring devices are devices used to detect and analyze power quality, which can be widely used in industrial, commercial, and household fields. With the development of power systems and the advancement of intelligence, the demand for power quality is also increasing. Therefore, it is important to choose a suitable portable power quality monitoring device. This article will start from the perspectives of functionality, performance, portability, and price,
Release time: September 25th, 2023 Hits: 11
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The role and advantages of power quality monitoring in energy management are mainly reflected in the following aspects: 1. Providing accurate data support and energy consumption verification. Power quality monitoring can provide accurate data support. By real-time monitoring of power quality parameters such as voltage, current, frequency, power factor, etc., energy consumption can be verified and analyzed. These are accurate
Release time: October 20, 2023 Hits: 4
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The power quality monitor is a device used to monitor the power quality in the power system. By accurately monitoring and analyzing the power quality in the power system, it can help solve the problem of power waste. The following will introduce how to solve the problem of electricity waste through power quality monitoring instruments from several aspects. Firstly, the power quality monitoring instrument can accurately measure the real-time waveform and parameters of electricity.
Release time: November 10, 2023 Hits: 4
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