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Adaptive noncommunication protection of double-circuit line systems

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4 Author(s)
Z. Q. Bo ; ALSTOM T&D Ltd. Protection & Control, Stafford, UK ; X. Z. Dong ; B. R. J. Caunce ; R. Millar

This paper presents a new technique for noncommunication protection of double-circuit lines. In the technique, the sequence and superimposed signals are used to detect the remote circuit breaker (CB) operation, from which it is to be determined whether a fault inside the protected section can be derived. Extensive simulation studies with respect to typical double-circuit transmission-line systems show that the proposed technique is able to rapidly and correctly determine whether a fault is inside the protected line section without the need for communication links.

Published in:

IEEE Transactions on Power Delivery  (Volume:18 ,  Issue: 1 )