New accurate fault location algorithm for parallel lines on the same tower based on distribute parameter

Electromagnetism is strong in two lines of the parallel lines on the same tower. The distribute capacitance is necessary to be considered when do the fault location. The paper describes an accurate fault location technique for parallel lines on the same tower, which uses post-fault voltage and current derived at one line terminal. The method does not require any knowledge of source impedance, and the shunt capacitance is considered. It maintains high accuracy for two parallel transmission lines on the same tower and the locating equation has the only result. The paper presents the theory of the technique and the results of ATP simulation.