Fault Location on Series-Compensated Lines Using Unsynchronized Measurements

This paper proposes a simple but effective fault location algorithm for series compensated transmission lines using unsynchronized two-ended measurements. The data synchronization is achieved using post-fault data samples which enhance the performance of the delivered algorithm. The proposed fault locating algorithm is independent of the reference bus selected and allows accurate calculation of the fault distance. The algorithm is extensively tested for all the major fault types and large fault resistances. The results show that the proposed fault location algorithm gives accurate estimates for fault distances.