A fault locator for transmission lines based on Prony method

The Prony method is a new tool in the area of power system protection. In this work it is used to locate faults on long lines. The estimation is based on the transients generated by traveling waves initiated by the fault. The proposed scheme comprises a Prony-based signal processor and an ANN-based inference system. Input data is generated using the Alternative Transient Program (ATP). A three-phase, frequency-dependent (FD) transmission line model was used. Two schemes are tested. The first scheme is set using the Prony residues´ calculations. The second scheme utilizes Prony full calculations. The second scheme is tested using the data employed in the ANN training and new data sets. The proposed locator has a good level of accuracy