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Development of a new fault location algorithm for multi-terminal two parallel transmission lines

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6 Author(s)
Nagasawa, T. ; Kansai Electric Power Co., Osaka, Japan ; Abe, M. ; Otsuzuki, N. ; Emura, T.
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Conventional fault location methods using one-terminal AC voltage and current are not applicable to multi-terminal systems. A new fault location algorithm for multi-terminal two parallel transmission lines is described. This method uses the magnitude of the differential currents at each terminal and also uses an algorithm based on a 3-terminal fault location algorithm and an equivalent conversion from an n-terminal to a 3-terminal system. For a multi-fault occurring at the same place and same time on both lines as well as a single-fault this new algorithm is reasonably accurate. EMTP simulation results are shown

Published in:

Transmission and Distribution Conference, 1991., Proceedings of the 1991 IEEE Power Engineering Society

Date of Conference:

22-27 Sep 1991