New fault locating system for air-insulated substations usingoptical current detector |
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Authors: | Yoshida Y Kawazoe S Ibuki K Yamada K Ochi N |
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Affiliation: | Kansai Electric Power Co. Inc., Osaka; |
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Abstract: | The authors present the basic philosophy, construction, design features, and test results of a new fault locating system. This fault locating system helps to shorten the time required for restoration of service after the occurrence of a busbar fault in an air-insulated distribution substation. Recent optical and electronic technologies allow the design of a highly accurate and compact fault locating system which consists of optical current detectors using the Faraday effect and a fault locating processor using a digital data processing technique. The fault location is carried out by discriminating between the directions of zero-sequence currents. Through various tests and field operations, it has been confirmed that the system has sufficient performance for practical applications |
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