Fault location on series-compensated transmission line using measurements of current differential protective relays

An accurate algorithm for locating faults on a series-compensated line is presented. This algorithm can be applied with current differential protective relays since two-end currents and one-end voltage are utilized as the fault locator input signals. The algorithm applies two subroutines and the procedure for indicating the valid subroutine. The algorithm has been evaluated using the fault data of ATP-EMTP versatile simulations of faults on a series-compensated transmission line. The presented example shows the validity of the presented algorithm and its high accuracy.