Test method and apparatus for testing a protective relay system

摘要

A relay test apparatus for testing a protective relay operation of a protective relay system comprises GPS receivers (22A, 22B), respectively connected to the protective relays (4A, 4B), each GPS receiver (22A, 22B) analyzing time data included in a signal transmitted from a satellite and outputting a time signal, simulation signal generators (7A, 7B), respectively connected to the protective relays (4A, 4B), each simulation signal generator (7A, 7B) generating a simulation signal and inputting the simulation signal to a corresponding protective relay (4A, 4B), and synchronous starting units (21A, 21B), respectively provided in the protective relays (4A, 4B), each synchronous starting unit (21A, 21B) starting a corresponding simulation signal generator (7A, 7B) to generate the simulation signal, when time signals output from the GPS receivers (22A, 22B) coincide with a preset time at a same time.