Fault detection of power equipment is the premise of reliable operation of intelligent switch. This paper presents a new method of overall and local integrated testing for complex power equipment. This method is based on the scenario design of single-phase grounding fault under working conditions, the generation method of characteristic waveform library and the complete set of high-precision fault waveform inversion technology, which improves the test efficiency. After comprehensive comparison and comparison with the traditional test methods, the test efficiency is improved by using this test method.

intelligent switch;fault detection;waveform inversion;state sequence;characteristic waveform