基于摩擦接触和密封圈接触压力的252 kV小型化GIS用盆式绝缘子应力分析

Stress Analysis on Basin Insulator for Miniaturized 252 kV GIS Based on Friction Contact and Sealing Ring Contact Pressure

边界条件设置是影响盆式绝缘子应力计算结果准确性的关键因素。本研究建立了252 kV小型化GIS用盆式绝缘子轴对称模型,并引入橡胶密封圈Mooney-Rivlin函数模型,通过有限元分析软件对不同约束边界条件下盆式绝缘子进行应力仿真计算,并与水压试验实测值进行对比分析。结果表明:采用摩擦接触的边界条件与工程实际相符,适用于盆式绝缘子的应力仿真边界条件设置,研究结果可对其他电压等级盆式绝缘子的小型化、轻量化设计提供参考。

The setting of boundary conditions is a key factor that affects the accuracy of stress calculation for basin insulator.In this paper,an axisymmetric model of basin insulator for miniaturized 252 kV GIS was established.The Mooney-Rivlin function model of rubber sealing ring was introduced to simulate and calculate the stress of basin insulator under different constraint boundary conditions by finite element analysis software,and the result was compared with the measured value of hydraulic test.The results show that the boundary condition using the friction contact is consistent with the engineering practice,which is suitable for the setting of stress simulation boundary condition for basin insulator.The research results can provide reference for the miniaturization and lightweight design of basin insulator of other voltage levels.