SVG carries out dynamic real-ime reactive power compensationby self-commutating power semiconduclor bridge converter, whichis a relalively advanced reactive power compensation method atpresent.lt no longer uses traditional passive large-capacity powercapacifors as the source of reactive power compensalion, bulrealizes the conversion of non-functional quantities through high-power electronic high-frequency switches, thus making a qualtativeleap in reactive power compensation technology. At the same time.it has fast dynamic response, higher salety perlormance, higher compensalion accuracy, more diversified compensafion funcfionsexlremely low harmonic confent after compensalion, smaller productvolume, and more convenient copacily expansion scheme. And ilcan also realize the APF(active filter) function, the product can filterout 2 -13 harmonics of the distribution system, and comprehensivelysolve the reactive power compensation, harmonic power quality,three-phase load imbalance and other problems needed to besolved in the distribution system.