Power capacitor overvoltage periodic test control system

The invention discloses a power capacitor overvoltage periodic test control system, relates to the technical field of power capacitors, and solves the technical problem of how to provide a standard-meeting voltage waveform for a power capacitor overvoltage periodic test. Comprising a pulse output module used for outputting an electric pulse which is used for providing a voltage for an overvoltage periodic test of the power capacitor; the voltage analysis module is used for sampling the voltage in the current test mode, analyzing a sampled voltage signal and calculating to obtain a voltage deviation index DL; if the voltage deviation index DL is larger than a preset deviation threshold value, it is indicated that the voltage waveform provided by the electric pulse does not meet the standard, a millisecond-level voltage adjusting instruction is output to a control center, and it is ensured that an accurate test voltage waveform can be provided; and the high-temperature simulation module is used for changing the