胡建林;李洋洋;杨威;吴彬;钟睿;蒋兴良;赵禹来;

• 1:输配电装备及系统安全与新技术国家重点实验室(重庆大学)
• 2:国网输电线路舞动防治技术重点实验室(国网河南省电力公司电力科学研究院)
• 3:国网重庆市电力公司

摘要(Abstract)：

复合绝缘子高压端护套内部存在气隙时导致电场畸变,引起内部局部放电,长期的局部放电可能导致护套击穿,降低芯棒的机械性能,从而引发芯棒断裂。气隙尺寸是影响内部电场畸变的主要原因,应用有限元分析软件COMSOL建立了交流110 k V复合绝缘子气隙三维模型,计算分析了气隙尺寸中跨度、厚度、长度,对内部气隙电场分布的影响。结果表明:相比完好状况,高压端护套内部气隙场强最大值大约提高1.5~4倍,内部气隙承担的场强远高于介质承担的场强。内部气隙场强最大值与跨度、厚度之间呈正相关,与长度之间呈负相关,跨度和长度的影响逐渐减弱,后期趋于平稳,而厚度的影响后期依旧显著。气隙尺寸中跨度、厚度、长度,三者对内部气隙场强的影响存在交互效应,可通过数值分析将其等效成三元三次多项式回归模型。

关键词(KeyWords)： 复合绝缘子;有限元分析;电场分布;气隙尺寸

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51321063,51607019);; 国家电网公司科技项目(52170216000D);; 高等学校学科创新引智计划项目(B08036)~~

作者(Author): 胡建林;李洋洋;杨威;吴彬;钟睿;蒋兴良;赵禹来;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.2636

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