[1]邓建青,刘宝林,孙会峰.一起SF6断路器用绝缘拉杆的放电故障浅析[J].电瓷避雷器,2020,(03):243-248.[doi:10.16188/j.isa.1003-8337.2020.03.038]
 DENG Jianqing,LIU Baolin,SUN Huifeng.Analysis on a Flashover Fault of Insulated Pull Rod for SF6 Circuit Breaker[J].,2020,(03):243-248.[doi:10.16188/j.isa.1003-8337.2020.03.038]
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一起SF6断路器用绝缘拉杆的放电故障浅析()
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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:
243-248
栏目:
绝缘子
出版日期:
2020-06-25

文章信息/Info

Title:
Analysis on a Flashover Fault of Insulated Pull Rod for SF6 Circuit Breaker
作者:
邓建青 刘宝林 孙会峰
(西安西电开关电气有限公司,西安 710077)
Author(s):
DENG Jianqing LIU Baolin SUN Huifeng
(Xi'an XD Switchgear Co., Ltd., Xi'an 710077, China)
关键词:
断路器 绝缘拉杆 击穿 金属异物
Keywords:
circuit breaker insulated pull rod flashover metal particles
DOI:
10.16188/j.isa.1003-8337.2020.03.038
摘要:
介绍了一起363 kV产品出厂耐压试验时断路器用绝缘拉杆的放电故障。通过从绝缘拉杆设计结构及电场分布、是否受潮、装配操作力、绝缘拉杆装配期限和绝缘拉杆质量等方面进行了逐一排查分析,最终推定该放电起因为断路器B相绝缘拉杆内部存在金属颗粒,产品耐压试验时,该缺陷会产生局部放电,进而逐步破坏内部绝缘,最终导致绝缘拉杆表面形成贯穿性击穿并引发产品放电。针对该起因绝缘拉杆内腔存在金属异物而引发放电故障,要求绝缘拉杆生产厂家严格控制其生产环节,提高绝缘拉杆内腔清洁度质量,杜绝此类事件的再次发生。
Abstract:
The flashover fault of insulated pull rod of 363 kV GIS circuit breaker is discussed. Investigation and analysis have been made in terms of the design structure and electric field distribution of the insulated pull rod, whether damp or not, assembly operating force, assembly deadline and quality of the insulated pull rod. Finally, the reason of the fault was deduced: there were metal particles in B-phase insulated pull rod of circuit breaker in the process of manufacturing, leading to partial discharge and gradually insulation deteriorating, which eventually resulted in the penetrability flashover of insulated pull rod and discharge of the product. In view of this phenomenon, it is required that manufacturers of insulated pull rod should strictly control their production process and improve the cleanliness quality of the inner cavity of insulated pull rod, and prevent such events from happening again.

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备注/Memo

备注/Memo:
收稿日期:2018-10-08 作者简介:邓建青(1987—),女,工程师,现从事绝缘材料研究。
更新日期/Last Update: 2020-07-07