[1]王 琼,侯宇嘉,褚文超,等.支柱绝缘子断裂原因分析及其隐患排查方法[J].电瓷避雷器,2020,(03):213-218.[doi:10.16188/j.isa.1003-8337.2020.03.033]
 WANG Qiong,HOU Yujia,CHU Wenchao,et al.Analysis on the Cause of Post Insulator Broken and Inspection Method[J].,2020,(03):213-218.[doi:10.16188/j.isa.1003-8337.2020.03.033]
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支柱绝缘子断裂原因分析及其隐患排查方法()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
213-218
栏目:
绝缘子
出版日期:
2020-06-25

文章信息/Info

Title:
Analysis on the Cause of Post Insulator Broken and Inspection Method
作者:
王 琼1 侯宇嘉1 褚文超2 车传强1 刘涛玮1
(1.内蒙古电力科学研究院,呼和浩特,010020; 2.乌兰察布电业局,内蒙古 乌兰察布,012000)
Author(s):
WANG Qiong1 HOU Yujia1 CHU Wenchao2 CHE Chuanqiang1 LIU Taowei1
(1.Inner Mongolia Electric Power Science & Research Institute,Hohhot 010020, China; 2.Wulanchabu Electric Power Bureau,Wulanchabu 012000, China)
关键词:
支柱绝缘子 端部附件 瓷砂 胶装 断面 形貌特征 制瓷工艺 弯曲试验
Keywords:
post insulator end fitting quartz sand cementing cross section morphological characteristics porcelain making process bend test
DOI:
10.16188/j.isa.1003-8337.2020.03.033
摘要:
母线支柱绝缘子一旦发生断裂,极可能导致母线坠落等严重事故。针对QF变电站220 kV母线支柱绝缘子断裂事件,根据支柱绝缘子制作流程和工艺要求,对比了合格支柱绝缘子和缺陷支柱绝缘子的外观形貌特征差异。分析认为缺陷支柱绝缘子并未按照正常工艺制做,而是将法兰附件敲掉、二次胶装后再重新投入使用的废旧瓷柱。依据对比分析得到的形貌特征差异,提出了该类缺陷支柱绝缘子现场隐患排查的关键技术要点,并利用此方法开展了全网隐患排查专项工作。最后,借助外观检查、弯曲试验和法兰附件拆解等试验和检测的结果,证实了本文推测结论的正确性,也检验了所提出排查方法的可行性。
Abstract:
Once the of busbar post insulator was broken, it was very likely to cause serious accidents such as busbar falling off. In orderto find out the cause of the fractured event of 220 kV busbar post insulator in QF substation, the differences of morphological characteristics between qualified post insulators and defective ones were compared, based on the manufacturing process and technological requirements of the post insulator. The defective post insulator was made without following the normal manufacturing process, and the fact was that the obsolete post insulator was used for the second time by knocking outits umbrella skirt, and the flange accessory was cemented again. The key technical points were put forward, which showed the methods to inspectdefectedpost insulators in the fields; investigation was carried outin the whole power grid. Finally, with the results of testssuch as appearance inspection, bending test and disassembly of flange accessories, the correctness of the conclusions was confirmed, and the feasibility of the inspecting methods were verified.

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备注/Memo

备注/Memo:
收稿日期:2018-08-05 作者简介:王琼(1986—),女,高级工程师,硕士,主要从事电气设备在线监测与故障诊断方面工作。
更新日期/Last Update: 2020-07-07