An optimisation approach for fault location in transmission lines using one terminal data

A new algorithm for fault location in transmission lines is presented, using in the calculation of fault distance phasors of voltage and current at one of the line terminals, and also the system equivalents at both line terminals. Through an optimisation process, the proposed method is able to find the fault distance in an accurate approach. A parametric analysis of variables present in the phenomenon is developed, showing the performance of the method for different line fault types.