Studies on fault location of fault-induced transient component

A new fault location scheme using the fault-generated high-frequency transient current is presented. This scheme is the same as the one using travelling wave in the aspect of fault location, although there are the different coefficients of travelling wave wavehead between them. The advantage of this scheme is that it only needs the current of the faulted line to consist of locating criterion, which makes it be applied on substation with single transmission line. Besides, it saves the analog and digital channels of the location device. It should be highlighted that this scheme is also insensitive to the bus structures and system parameters, the types of faults, the earth resistance value, the line length, sampling rate or the operation modes of power system. Simulations carried by ATP software have proved the availability and advantages of the scheme presented in this paper.