K. Ramar∗ and A.A.A. Eisa∗
Fault location, transmission lines, one-end measurements
This paper presents novel algorithms for fault location in single- circuit and double-circuit transmission lines in any general n-bus interconnected power system. The algorithms use the data available at one end of the faulted line. The effects of fault resistance, remote infeed, and pre-fault load flow are fully taken into consideration in the proposed algorithms. The novelty of these algorithms is in accounting for the system’s interconnectivity by using a two- bus Thevenin equivalent network instead of the simplified two- equivalent-source model usually employed in fault location studies. The algorithms have been tested on an 11-bus interconnected power system for various fault conditions, using transient data obtained from PSCAD/EMTDC simulations. The results indicate the ability of the algorithms to compute fault location with high accuracy.
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