Power quality monitoringdeviceIt 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 applications.

Communication transmission layer: The devices responsible for data communication transmission in order to transmit the data collected by monitoring layer devices to the server, mainly including communication management machines, serial servers, network switches, etc. The data acquisition terminal communicates with the monitoring layer device through a serial port, reads the data, conducts preliminary analysis and organization, saves the data in a local SD card, and then transmits the data to the wireless communication module. The wireless communication module adopts radio frequency technology to form a wireless local area network on site, collecting and transmitting data collected by various data collection terminals to the backend server. Data can also be transmitted through network cables or optical fibers.

The standard monitoring system 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; The decentralized distribution system has a spatial and geographical plane of the system's main screen. 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. The main electrical parameters are directly displayed on the human-computer interaction interface and refreshed in real-time.

User management:Different levels of users can be granted different permissions to ensure the reliability of the system during operation. For the closing/opening operation of an important circuit, an operator level user needs to input the operation password, and an engineer level user needs to input a confirmation password before the operation can be completed.

Through the power monitoring system, various electrical parameters and switch status of on-site equipment can be collected in real-time and regularly, including three-phase voltage, current, power, power factor, frequency, harmonics, imbalance, current K coefficient, telephone waveform factor, voltage peak coefficient, electrical energy, temperature, switch position, equipment operation status, etc. The collected data can be directly displayed Or generate new intuitive data information through statistical calculations and display it, and store important information in the database.

The system provides two curve analysis interfaces, real-time curve and historical trend, to analyze the current load operation status of the relevant circuit by calling the real-time curve interface of the circuit. By calling the real-time curve of a certain distribution circuit, the signal fluctuation caused by the electrical equipment of the circuit can be analyzed. The historical trend of the system refers to the ability of the system to view the historical trend of all stored data, making it convenient for engineering personnel to conduct quality analysis on the monitored distribution network.

The system has a standard electricity report format and can design report formats that meet user needs according to their needs. The system can automatically design. It can automatically generate various types of real-time operation reports, historical reports, event fault and alarm record reports, operation record reports, etc. It can query and print all data values recorded by the system, automatically generate daily, monthly, quarterly, and annual reports of electricity, and generate electricity rate reports based on the time period of compound rate and the set value of rate. The starting point, interval, and other parameters for querying and printing can be set by oneself; The system design can also customize report output functions to meet different requirements according to user needs.