GPS shunting phase-shifting test method and system for grounding device

The invention discloses a GPS shunting phase-shifting test method for a grounding device. PPS second pulse synchronization signals are provided through a GPS artificial earth satellite. The method includes calculating the phase difference between injecting different frequency current signals, generating different frequency voltage drop and incoming and outgoing line configuration shunting and GPS second pulse signal rising edges, taking the different frequency voltage drop as reference, and realizing accurate measurement of shunting phase-shift of the grounding device. The invention discloses a GPS shunting phase-shifting test system for a grounding device. No extra referential voltage lead is needed, and the method and system are not limited and isolated by on-site test environmental conditions. The method and system have the advantages of strong anti-electromagnetic interference capability, long transmission distance, no signal delay and low workload, and are convenient to use in on-site tests. 本发明公开种接地装置GP