| 电流互感器密封失效引起的绝缘故障 |
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| 引用本文： | 李予全,寇晓适,张少锋,邵颖彪,赵永峰,朱华,张逸凡,郑含博. 电流互感器密封失效引起的绝缘故障[J]. 中国电力, 2012, 53(11): 147-153,174. DOI: 10.11930/j.issn.1004-9649.202004018 |
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| 作者姓名： | 李予全 寇晓适 张少锋 邵颖彪 赵永峰 朱华 张逸凡 郑含博 |
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| 作者单位： | 1. 国网河南省电力公司电力科学研究院，河南 郑州 450052;2. 国网河南省电力公司，河南 郑州 450052;3. 广西大学，广西 南宁 530000 |
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| 基金项目： | This work is supported by National Natural Science Foundation of China (Aging Characterization of Transformer Winding Hotspot Paper Insulation by Using Ethanol and Its Formation Mechanism, No.51907034) |
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| 摘 要： | 首先介绍了油浸式电流互感器和SF6电流互感器的整体绝缘结构，以近期多地出现的电流互感器绝缘故障为切入点，分析了电流互感器绝缘击穿的原因。通过电流互感器的解体检查进一步推断出设备故障的根源为互感器密封失效，针对油浸式电流互感器的金属膨胀器渗漏、SF6电流互感器爆破片破损引发的密封失效现象，提出了运行维护建议和预防措施。
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| 关 键 词： | 电流互感器 金属膨胀器 爆破片 密封失效 |
| 收稿时间： | 2020-04-06 |
Insulation Fault Caused by Current Transformer Seal Failure |
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| LI Yuquan,KOU Xiaoshi,ZHANG Shaofeng,SHAO Yingbiao,ZHAO Yongfeng,ZHU Hua,ZHANG Yifan,ZHENG Hanbo. Insulation Fault Caused by Current Transformer Seal Failure[J]. Electric Power, 2012, 53(11): 147-153,174. DOI: 10.11930/j.issn.1004-9649.202004018 |
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| Authors: | LI Yuquan KOU Xiaoshi ZHANG Shaofeng SHAO Yingbiao ZHAO Yongfeng ZHU Hua ZHANG Yifan ZHENG Hanbo |
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| Affiliation: | 1. State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China;2. State Grid Henan Electric Power Company, Zhengzhou 450052, China;3. Guangxi University, Nanning 530000, China |
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| Abstract: | Firstly, the insulation structures of oil-immersed current transformer (TA) and SF6 TA are introduced. And then, the causes of TA insulation breakdowns are analyzed based on an investigation of the insulation faults of TAs occurring in several cases. It is concluded through further disintegration examination that the seal failure is the root cause for insulation fault. Lastly, operation recommendations and precautions are presented for seal failure caused by the metal expander leakage of oil-immersed TA and the rupture disc damage of SF6 TA. |
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| Keywords: | current transformer metal expander rupture discs seal failure |
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