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.