An algorithm for estimating fault location in an unbalanced three-phase power system

A new algorithm for estimating fault location on a transmission line, as well as the fault type, is studied and tested using simulation data obtained from the Electromagnetic Transient Program (EMTP). The proposed algorithm is based on the least absolute value estimation approach (LAV), and uses dig...

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Bibliographic Details
Published in:International journal of electrical power & energy systems 2002-10, Vol.24 (7), p.515-520
Main Authors: Soliman, S.A., Abdel-Rahman, M.H., Al-Attar, E., El-Hawary, M.E.
Format: Article
Language:English
Subjects:
Applied sciences
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fault location
Least absolute value
Parameter estimation
Power networks and lines
Power system protection
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Summary:A new algorithm for estimating fault location on a transmission line, as well as the fault type, is studied and tested using simulation data obtained from the Electromagnetic Transient Program (EMTP). The proposed algorithm is based on the least absolute value estimation approach (LAV), and uses digitized samples of post-fault voltage and current waveforms at the relay locations. The proposed algorithm is applied to two different models of the transmission line. The first model is a three phase long transmission line, while the second model is a three phase three terminals transmission line. The measurements taken at the relay location do not need to be synchronized. Effects of critical parameters on the behavior of the proposed algorithm and on the estimated fault location are examined. A computational comparison between the proposed algorithm and the least errors square (LES) is presented in the paper.
ISSN:0142-0615
1879-3517
DOI:10.1016/S0142-0615(01)00051-5