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| Analysis and Improvement Measures of Non-Phase Protection Defect of 500kV Breaker Body |
| Wei Xin, Wen Caiquan |
| Hebei Electric Power Corporation Maintenance Branch, Shijiazhuang 050070 |
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Abstract When the single to ground fault occurs in neutral unearthed system, the fault point must be found as soon as possible to avoid a phase to phase short. This paper discusses the zero-sequence voltage, zero-sequence current of the system and the power losses and temperature change in fault point. The conclusion is: the zero-sequence voltage make the fault point give out heat which can be detected by Infrared Thermometer,field test performed proves that this method is practical and feasible .
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Published: 04 November 2014
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| Cite this article: |
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Wei Xin,Wen Caiquan. Analysis and Improvement Measures of Non-Phase Protection Defect of 500kV Breaker Body[J]. Electrical Engineering, 2014, 15(10): 103-105.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2014/V15/I10/103
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2014, Vol. 15 
