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低零值盘型悬式瓷绝缘子发热机理研究

open access: yesDianci bileiqi
绝缘子发热是运作中较为常见的缺陷,尤其是盘型悬式瓷绝缘子串持续发热,往往会在较短的时间内发生贯通性击穿,进而引起瓷绝缘子爆裂故障。针对该现象,以某220 kV变电站盘型悬式瓷绝缘子发热、爆裂故障展开归一化研究,通过等值盐密、绝缘电阻、耐压试验等技术手段,发现发热的瓷件均为低(零)值绝缘子,并在宏观检查中发现发热和爆裂的绝缘子,钢帽和盘型瓷件连接处(即颈部位置)断面均存在裂纹,且钢帽内水泥胶合剂存在水分子侵入疏松痕迹,考虑内嵌瓷件受内外圈水泥胶合剂的内挤外压力作用 ...
孙庆峰   +5 more
doaj  

[Preoperative precise diagnosis and surgical treatment outcomes in patients with atypical low back and leg pain]. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Liu Z   +5 more
europepmc   +1 more source

[Effect of different bone grafting methods and internal fixation on mechanical stability of Schatzker type <b>Ⅱ</b> tibial plateau fracture]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang Z   +7 more
europepmc   +1 more source

[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Huang C   +9 more
europepmc   +1 more source

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