Analysis of Fault Location Algorithms for Parallel Transmission Lines with Series Compensation

One-end fault location techniques for seriescompensated parallel lines are investigated. First, the basic fault location algorithm is presented briefly. Then, the new concept overcoming the drawbacks of the basic algorithm is delivered. The ATP-EMTP program for equivalencing of Series Capacitors (SCs) equipped with Metal Oxide Varistors (MOVs) is presented. Reliable fault data for evaluation of accuracy of the analyzed algorithms has been generated with the developed detailed ATP-EMTP model of series-compensated parallel lines including the measurement channels. The presented results illustrate effectiveness and high accuracy of the new fault location algorithm being distinctive in no requiring the impedance data of the equivalent supplying systems and avoiding of pre-fault measurements.