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SYSTEMS AND METHODS FOR IDENTIFYING FAULTED SEGMENTS IN MULTIPHASE POWER NETWORKS

United States Patent Application

20160282397
A1
View the Complete Application at the US Patent & Trademark Office
Systems and methods for identifying faulted segment(s) in a multiphase power network may include receiving a current measurement that was measured during a fault, obtaining a set of equivalent sequence impedances for the segments, building a set of sequence bus impedance matrices, selecting a segment, calculating coefficients for the segment based on the set of equivalent sequence impedances for the segment and the sequence bus impedance matrices, calculating an estimated per unit fault distance for the segment based at least partially on the current measurement and the coefficients, identifying the segment as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one, and repeating for each of the segments the calculating coefficients, calculating an estimated per unit fault distance, and identifying as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one.
Kang, Ning (Morrisville, NC), Mousavi, Mirrasoul (Cary, NC)
15/ 174,687
June 6, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with U.S. Government support under Contract No. DE-OE0000547 awarded by the Department of Energy. The Government has certain rights in this invention.