宁夏电力Issue(1)：80-85,6.DOI:10.3969/j.issn.1672-3643.2026.01.012
寒潮影响下的GIS套管爆裂分析
Analysis of GIS porcelain bushing burst under cold wave conditions
摘要
Abstract
This paper investigates the causes of porcelain bushing burst failure in high-voltage gas-insulated switchgear(GIS)at a 220 kV substation.Macroscopic and dimensional inspections,porosity tests,porcelain analysis,and phenol-phthalein tests reveal that the fracture morphology of the porcelain bushing resembles that of mechanical bending failure.While the porcelain body itself shows no abnormalities,significant eccentricity in the bonding of the bushing is observed,with traces of water seepage,moisture absorption,and carbonization in the cement adhesive.The study discusses the effects of axial displacement of the GIS bus tube during cold wave conditions and the impact of bus tube rotation under solar radiation during heating on the porcelain bushing,verified through simulation.Results indicate that the cen-ter of gravity of the bushing shifts due to cementing eccentricity.Rapid cooling and subsequent heating during the cold wave accelerate aluminum alloy bus tube displacement,causing angular deformation.The resultant force concentrates at the weak section of the bushing with cementing eccentricity,ultimately leading to the porcelain bushing burst.关键词
GIS瓷套管/寒潮环境/温差循环/轴向位移/瓷套爆裂Key words
GIS porcelain bushing/cold wave environment/thermal cycling/axial displacement/porcelain bushing burst分类
信息技术与安全科学引用本文复制引用
刘学广,盛军锋,孙庆峰,付军,曾庆荣,徐胜..寒潮影响下的GIS套管爆裂分析[J].宁夏电力,2026,(1):80-85,6.基金项目
浙江省电力锅炉压力容器检验所有限公司科技项目(GJRD2021-01) （GJRD2021-01）
