Power quality monitoring仪：

Power quality refers to the quality of AC power supplied to users through the public power grid, which generally 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 cause severe fluctuations in the grid voltage, reducing the quality of power supply.

With the development of power electronics technology, it not only brings positive aspects of energy conservation and energy transformation to modern industry, but also the widespread application of power electronics devices in various industries has brought new and more serious damage to power quality, becoming the main source of harmonic pollution in the power grid.The number of rectifiers, variable frequency speed control devices, electric arc furnaces, electrified railways, and various power electronic devices used in the distribution network of various user terminals in the power grid system is constantly increasing.

Causing impact or pollution to the electricity network. Causing voltage instability, overvoltage, harmonic generation, etc. Harmonics reduce the efficiency of electricity production, transmission, and utilization, causing overheating, vibration, and noise in electrical equipment, aging insulation, and shortening service life，Even malfunctions or burns occur. Harmonics can also cause local parallel resonance or series resonance in the power system, amplifying the harmonic content and causing equipment such as capacitors to burn out.