期刊
IEEE TRANSACTIONS ON POWER DELIVERY
卷 15, 期 3, 页码 888-894出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/61.871348
关键词
high frequency current signals; positional protection; transient based protection; transmission line protection
This paper presents a new technique for high-speed protection of transmission lines, the Positional Protection technique. The technique uses a fault transient detector unit at the relaying point to capture fault generated high frequency transient signals contained in the primary currents. The decision to trip is based on the relative arrival times of these high frequency components as they propagate through the system. Extensive simulation studies of technique were tarried out to examine the response to different power system and fault conditions. Results show that the scheme is insensitive to fault type, fault resistance, fault inception angle and system source configuration, and that it is able to offer both very high accuracy and speed in fault detection.
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