[1]李 青,伍 衡,李士杰,等.一起500 kV换流变阀侧套管开裂漏气故障分析及处理[J].电瓷避雷器,2020,(02):250-255,260.[doi:10.16188/j.isa.1003-8337.2020.02.039]
 LI Qing,WU Heng,LI Shijie,et al.Analysis and Treatment of Cracking and Air-Leakage Fault of Valve-Side Bushing for a 500 kV Converter Transformer[J].,2020,(02):250-255,260.[doi:10.16188/j.isa.1003-8337.2020.02.039]
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一起500 kV换流变阀侧套管开裂漏气故障分析及处理()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年02期
页码:
250-255,260
栏目:
绝缘子
出版日期:
2020-04-25

文章信息/Info

Title:
Analysis and Treatment of Cracking and Air-Leakage Fault of Valve-Side Bushing for a 500 kV Converter Transformer
作者:
李 青 伍 衡 李士杰 张新波 徐德增 陆 海 徐 朕
(南方电网超高压输电公司检修试验中心,广州 510663)
Author(s):
LI Qing WU Heng LI Shijie ZHANG Xinbo XU Dezeng LU Hai XU Zhen
(Maintenance and Test Center of EHV of CSG, Guangzhou 510663,China)
关键词:
换流变压器 阀侧套管 缺陷分析 现场修复
Keywords:
converter transformer valve-side bushing fault analysis on-site repair
DOI:
10.16188/j.isa.1003-8337.2020.02.039
摘要:
油气泄漏是套管设备故障的常见问题之一,多数是因为密封件老化、结构应力设计不足、材料强度不足等原因造成,导致套管绝缘强度降低引发击穿短路。从故障形式、材料强度、应力分析等方面对一起典型的500 kV换流变阀侧套管开裂漏气故障进行了原因分析,并结合模拟试验和仿真计算,提出了可用于换流站现场开展的整改措施和详细的检修流程,最后验证了该措施的修复效果。
Abstract:
Oil and air leakage is one of the common faults of transformer bushings, most of which are caused by aging deterioration of rubber seal, inadequate structural stress design and material weakness. The reasons of a 500 kV transformer valve-side bushing cracking and air-leakage fault are analyzed from aspects of fault type, material strength and stress analysis. Detailed treatment methods and maintenance procedures are suggested based on simulation tests and calculation. The fault simulation test results and the analysis process are introduced. The effects of the treatment methods are verified.

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备注/Memo

备注/Memo:
收稿日期:2019-05-23作者简介:李青(1983—),男,硕士,主要研究方向为电力一次主设备工厂化检修、高压试验。
更新日期/Last Update: 2020-04-25