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.
SoPower quality monitoring deviceWhat are the functions?
1. 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.
2. Applying wavelet transform to measure and analyze the harmonics of non-stationary time-varying signals.
3. Measure and analyze the impact of various electrical equipment on the power quality of the public power grid under different operating conditions.
4. 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.
5. Dynamic monitoring of power equipment adjustment and operation process helps users solve problems that arise during the adjustment and operation of power equipment.
6. Test and analyze the causes of faults such as circuit breaker action, transformer overheating, motor burning, and automatic device malfunction in the power system.
7. Test and analyze the dynamic parameters of reactive power compensation and filtering devices in the power system, and quantitatively evaluate their functions and technical indicators.
8. Features such as portability, multi-parameter, large capacity, high accuracy, and the application of modern signal analysis theory
       Power quality monitoringDevice characteristics
1. Reliable
The voltage input adopts a high voltage isolation module, and the current input adopts a high-precision current transformer to isolate the input signal from the measurement system. Greatly improved the anti-interference ability of HD DZ300B.
2. Easy to use
Adopting a Chinese interface and simple button operation, it is convenient for users to use.
3. High precision
Meet the requirements of national standard A-level instruments. Reference algorithms are used for harmonics, three-phase imbalance, flicker, and fluctuations, without approximate calculations. High precision A/D (16 bit) is used for simultaneous sampling, with a collection rate of 12.8 kHz.
4. Strong software functionality
Adopting the DSP+ARM+CPLD kernel, it has fast processing speed and rich software functions, making HD DZ300B suitable for complex testing and data processing work, greatly improving testing efficiency and level.