Algorithms For Fault Location And Line Parameter Estimation Utilizing Voltage and Current Data During the Fault

This paper puts forward a new fault location and line parameter estimation algorithm by utilizing only the voltage and current measurements during the fault. The algorithm is applicable to unbalanced faults. Positive-sequence line parameters can be calculated for line to ground, line to line to ground and line to line faults. Zero-sequence line parameters can also be obtained for line to ground faults. Distributed parameter line model is employed to achieve high accuracy.