Fault resistance sensitivity of sparse measurement based transmission line fault location

Traditional transmission line fault location methods require measurements from at least one end of the faulted line. Measurements from all the ends of the faulted line are desirable but not always available. Sparse measurement based fault location scheme using phasor measurements from different substations located in the vicinity where the fault has occurred can be applied if the measurements are not available from any of the line ends. Fault resistance is one of the major sources of uncertainty in transmission line fault location estimation. This paper presents a correction scheme to reduce impact of fault resistance on sparse measurement method.