华电技术 ›› 2009, Vol. 31 ›› Issue (11): 34-35.

• 技术交流 • 上一篇    下一篇

某抽水蓄能电厂500kV主变压器放电故障分析和处理

陈杰华,林春耀 ,姚森敬   

  1. 广东电网电力科学研究院,广东广州 510600
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-11-25 发布日期:2009-11-25

Analysis and treatment of the discharge fault of 500kV main transformer of a pumped storage power station

CHEN Jiehua, LIN Chunyao, YAO Senjing   

  1. Guangdong Power Test & Research Institute, Guangzhou 510600, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-11-25 Published:2009-11-25

摘要: 某抽水蓄能电厂500kV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: 500kV主变压器, 单相接地, 长油隙放电, 故障分析, 处理

Abstract: The singlephase earth fault occurred in operation of 500kV 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 highvoltage bushing and the yoke was occurred. Through repairing and treatment, the discharge fault of the transformer had been eliminated basically.

Key words: 500kV main transformer, single-phase earthing, discharge in long oil gaps, fault analysis, treatment