1Power quality monitoringdeviceIt 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. 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. Measure and analyze the impact of various electrical equipment on the power quality of the public power grid under different operating conditions. 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. Dynamic monitoring of power equipment adjustment and operation process helps users solve problems that arise during the adjustment and operation of power equipment.

3. Test and analyze the causes of faults such as circuit breaker action, transformer overheating, motor burning, and automatic device malfunction in the power system. 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. The characteristics of portability, multi-parameter, large capacity, high accuracy, and the application of modern signal analysis theory make WDDZ300B widely applicable in fields such as power transmission and distribution, power electronics, and motor drive.

The power quality monitoring device is an instrument installed in a substation that monitors various indicators of power quality in real-time. By collecting real-time voltage and current on site, and through a series of calculations, Visualize the various indicators of power quality (harmonics, fluctuation flicker, grid frequency, voltage/current effective value, total active/reactive/power factor, three-phase fundamental voltage/current effective value, fundamental voltage/current phase, fundamental power/power factor, voltage deviation, frequency deviation, three-phase voltage imbalance, three-phase current imbalance, negative sequence quantity, etc.) on the instrument LCD screen.