What is the concept of power quality?

Power quality refers to the quality of power in power system. The ideal electric energy should be a completely symmetrical sine wave. Some factors will make the waveform deviate from the symmetrical sine, which will cause power quality problems.

On the one hand, it studies which factors will lead to power quality problems, on the other hand, it studies what problems these factors will lead to, and finally, it studies how to eliminate these factors and make the power approach sine wave to the greatest extent.

Development trend of power quality control technology

Power quality control is a complex system engineering, involving many aspects such as power system, power electronics and automatic control. At present, the research on power quality control abroad is in full swing, including the expansion of applicable power theory, the establishment of power quality evaluation index system, and the proposal of new power quality analysis methods.

And the design and implementation of power quality control device based on user electricity technology. Several internationally renowned companies have produced their own power quality regulators, such as SIPCON2S from Siemens, SSVR (Static Voltage Regulator) from ge, DVR from ABB and DSC (Dynamic Voltage Corrector) from Softswitch.

The World 1 DVR developed by Westinghouse for American Institute of Electric Power has been put into industrial operation in August, 1996. Small (1mj ~ 10mj) low-temperature SMEs in IGC and American ASC have been commercialized, and Japan, Germany, France and Italy have also conducted in-depth research on low-temperature SMEs.

The above contents refer to Baidu Encyclopedia-Power Quality.