华电技术 ›› 2009, Vol. 31 ›› Issue (11): 34-35.
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陈杰华,林春耀 ,姚森敬
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CHEN Jiehua, LIN Chunyao, YAO Senjing
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摘要: 某抽水蓄能电厂500kV主变压器运行中发生单相接地故障,通过对变压器内部检查和分析,找到了高压套管油中均压环对铁轭的长油隙放电的故障原因,随后对故障进行修复和处理,变压器放电故障的现象基本消除。
关键词: 500kV主变压器, 单相接地, 长油隙放电, 故障分析, 处理
Abstract: The singlephase earth fault occurred in operation of 500kV main transformer in a pumped storage power station. By inspection of the inner parts of the transformer and analysis, it is found that a discharge fault in long oil gaps between the grading ring in oil of highvoltage bushing and the yoke was occurred. Through repairing and treatment, the discharge fault of the transformer had been eliminated basically.
Key words: 500kV main transformer, single-phase earthing, discharge in long oil gaps, fault analysis, treatment
陈杰华;林春耀;姚森敬. 某抽水蓄能电厂500kV主变压器放电故障分析和处理[J]. 华电技术, 2009, 31(11): 34-35.
CHEN Jiehua;LIN Chunyao;YAO Senjing. Analysis and treatment of the discharge fault of 500kV main transformer of a pumped storage power station[J]. Huadian Technology, 2009, 31(11): 34-35.
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