A fault location algorithm for transmission line based on ditributed parameter

A fault location algorithm based on distributed parameter using synchronized samples with Global Positioning System (GPS) is described. The fault location algorithm is based on distributed parameter, it can eliminates the effect of line shunt capacitance automatically. Considering untransposed and unbalanced transmission lines practically, phase components are transformed to model components in the fault location algorithm. Computer simulation and experiment showed that the algorithm not only has high accuracy and robustness, but also is not affected by fault resistance, fault type, fault location and incidence angle of the fault occurrence. The location error is less than 0.4% for all cases.