Testing system for static var generator

The invention provides a testing system for a static var generator. The testing system comprises a low voltage alternating current power supply, a boosting transformer, a high voltage inverter power supply and a detecting device, wherein the low voltage alternating current power supply outputs low voltage alternating current, the boosting transformer boosts the low voltage three-phase alternating current for outputting high voltage three-phase alternating current, the high voltage inverter power supply receives the high voltage three-phase alternating current and outputs specific three-phase alternating current according to the rated power and the working voltage of the to-be-detected static var generator and connects the three-phase alternating current to the to-be-detected static var generator, and in the operation process of the to-be-detected static var generator, the detecting device detects the voltage, the current and the phase of the output end of the static var generator and judges whether the to-be-