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一起氧化锌电阻片侧面绝缘釉层短路引起的避雷器故障分析

Dianci bileiqi
随着金属氧化物避雷器在电力系统中广泛应用，由于老化、受潮、环境污秽等原因造成其损坏的故障时有发生。针对一起500 kV线路避雷器异常发热的缺陷，通过带电检测、停电检测和解体试验分析查明事故原因为避雷器下法兰位置未设置排水孔，导致防爆板长期暴露在酸性雨水环境中生锈，强度降低损坏，水汽侵入避雷器空腔内引起氧化锌电阻片受潮，侧面绝缘釉层性能下降后短路击穿。然后通过对受潮氧化锌电阻片进行干燥处理和敲除侧面绝缘釉处理，进一步验证了是氧化锌电阻片侧面绝缘釉短路导致泄漏电流增大。局部氧化锌电阻片侧面绝缘釉层短路击穿后，
贾焦仁, 严明
doaj  

[Effectiveness analysis of 5G remote robotic surgery in pelvic fracture treatment]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Dai Y, Yang K, Zeng Y, Han W, Wang J.
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[Clinical characteristics and prognosis of 52 patients with primary central nervous system lymphoma]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Bao F, Li S, Liu Z, Jing HM.
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[Research progress in motor assessment of neurodegenerative diseases driven by motion capture data]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wu J, Guo W, Luo K, He L, Yang G.
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[Wrist arthroscopic Wafer surgery combined with triangular fibrocartilage complex insertion point reconstruction in treatment of Palmer type ⅡC combined with type ⅠB ulnar impingement syndrome]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li Y, Ma M, Ruan X, Fu Y.
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[Research progress on mechanisms and clinical management of comorbid constipation in children with autism spectrum disorder]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Ding JJ, DU DY, Li P.
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[Basic knowledge and skills required in external fixation and foot and ankle reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Qin S, Du H.
europepmc   +1 more source

["Chongqing experiences" in treatment of bone infections]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xie Z.
europepmc   +1 more source

[Systemic lupus erythematosus complicated by autoimmune nodopathy: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Wei C, Yang Y, Zhao X, Liu X, Jia Y.
europepmc   +1 more source

High glucose induces pro-inflammatory polarization of macrophages by inhibiting immune-responsive gene 1 expression. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Luo W, Wang Y, Liu Y, Wang Y, Ai L.
europepmc   +1 more source