1. Measure and analyze the AC power quality supplied by the public power grid to the user end,Power quality monitoringdeviceMeasurement analysis: 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.

2. Load fluctuation monitoring: Regularly record and store changes in power parameters such as voltage, current, active power, reactive power, frequency, phase, etcPotential. Dynamic monitoring of power equipment adjustment and operation process helps users solve problems that arise during the adjustment and operation of power equipment. Test and analyze the causes of faults in the power system, such as circuit breaker action, transformer overheating, motor burning, and automatic device malfunction, using the power quality monitoring device.

3. 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 it widely applicable in fields such as power transmission and distribution, power electronics, and motor drive.

The power quality monitoring device can achieve management and control of all distribution and electricity system facilities, including power supply incoming lines and terminal electrical equipment, at an economically reasonable cost, greatly improving the operation and management efficiency of the distribution and electricity system and facilities, and reducing operating costs. Most power quality monitoring indicators at home and abroad use a 95% probability value as the measurement basis, and monitoring points need to be specified. These indicators also have corresponding requirements for the performance of electrical equipment. Electrical equipment should not only be able to operate normally within the specified standard values, but also have the ability to withstand short-term excessive operation.