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Kiyoshi Kurosawa Reishi Kondo Shinsuke Nasukawa Tatsushi Yamaguchi Kazuo Amano 《Electrical Engineering in Japan》2012,178(1):21-28
Fault point locating systems based on surge current detection have recently been used for fast recovery of underground transmission lines from faults. Electromagnetic induction type sensors have mainly been used for the detection of surge current. However, they are susceptible to electromagnetic noise which causes unstable system operation. To solve this problem, Tokyo Electric Power Co., Toko Electric Corporation, and Fujikura Ltd. jointly developed a new system using optical fiber current sensors. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 178(1): 21–28, 2012; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.20981 相似文献
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研制了直流系统接地故障监测选线装置的传感器———差磁式故障监测选线传感器。理论研究及现场实际运行结果表明,该传感器可以直接检测每条支路漏电流产生的磁场,无需向直流操作回路注入任何信号,对直流操作回路无任何影响,且检测准确、灵敏度高,解决了电力系统接地故障监测的实际问题。 相似文献
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Minoru Yamamoto Atsuchi Ifukube Yoshikazu Murata Makoto Hashimoto 《Electrical Engineering in Japan》1995,115(4):71-81
A fault section detection system is being developed for 33-kV ungrounded power line. The fault section is obtained from the relation of two point zero-phase currents on power line. This fault detector is composed of optical current sensors and the processing unit and solar battery system. The optical current sensor consists of a Faraday cell and a porcelain bushing. Zero phase current on the processing unit is obtained through a three-phase composer with auto gain control and residual current eliminator. This fault detector has the ability of 0.15 A zero-phase current detection fault factory test; in field tests, this fault detector detects ground fault. 相似文献
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