Reactive power compensation device

The invention relates to a reactive power compensation device, and particularly relates to a reactive power compensation device adopting a static var generator. The technical problems to be solved include low reactive power compensation efficiency, low speed and high fault rate in the prior art, large size of the complete reactive power compensation device and complex wiring in the prior art which is unfavorable for capacity extension and reconstruction. The reactive power compensation device comprises a power supply part, a control part, a display part, a switching part, a protection part and a shell. The switching part adopts the static var generator which is composed of a static detection module, a control operation module and a compensation output module. The modularized design is adopted so that installation and wiring and maintenance are facilitated. The beneficial effects of the reactive power compensation device include that continuous smooth bidirectional adjustment of reactive power compensation can be realized; safety and stability are great; response time is short, and flicker can be effectively suppressed; operating loss is low; the modularized design is adopted so that installation workload is low and operating and maintenance are easy; and remote monitoring and data uploading can be realized.