高压电器2025，Vol.61Issue(6)：113-119,7.DOI:10.13296/j.1001-1609.hva.2025.06.013
盆式绝缘子的热应力分析
Thermal Stress Analysis of Insulating Spacer
摘要
Abstract
The mechanical and electrical performance of insulation part affects long-term operation reliability of high-voltage switchgear in transmission and distribution.Reducing the internal stress generated during the manufacturing process of insulation part plays a key role in improving the operation quality of product.In this paper,the thermal stress generated during the cooling process of 126 kV insulating spacer after curing is taken as the main analysis sub-ject.Based on the heat transfer analysis method of Fourier's law,the thermal stress distribution of insulating spacer after cooling is analyzed through the heat dissipation method of convective heat transfer.The overall stress distribu-tion is uniform,and the stress at the junction of epoxy resin and metal inserts is relatively high due to the mismatch of thermal expansion coefficients between epoxy resin and metal inserts.Two different cooling methods are used to cool the insulating spacer,analyze the stress variation and verify accuracy of simulation results through mechanical stress detection.Based on simulation and practical research results,the temperature impact of the insulating spacer with the production process of cooling down with the curing furnace after the adoption of casting curing is smaller than that under the normal temperature,the stress distribution is perfect and the application in the production is good.关键词
盆式绝缘子/热应力/传热/有限元分析/应力检测Key words
insulating spacer/thermal stress/heat transfer/finite element analysis/stress detection引用本文复制引用
杨锐,张鑫淼,袁端鹏,郝留成,司晓闯,方启,徐仲勋,王亚祥,费翔,蒋成博..盆式绝缘子的热应力分析[J].高压电器,2025,61(6):113-119,7.基金项目
平高集团有限公司科技项目(GIL三支柱绝缘子全寿命周期可靠性评估及提升技术研究).Project Supported by Pinggao Group Co.,Ltd.Technology Project(GIL Three Pillar Insulator Full Life Cycle Reliability Assessment and Improvement Technology Research). （GIL三支柱绝缘子全寿命周期可靠性评估及提升技术研究）
