In recent years,incidents of failure of protection and misoperation have occurred frequently due to incorrect wiring of protection circuits.Through practical cases,on the basis of the analyzing the causes of faults from both theoretical and practical perspectives,a new short-circuit test method is put forward,and it is applied in practice to verify its reliability so as to provide reference for the operation and maintenance of substation and distribution substation equipment and the putting into operation of the new lines.
short circuit testdifferential protectiondistance protection
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