基于有限元仿真的GIS支柱绝缘子性能优化  

Performance Optimization of GIS Post Insulators by Finite Element Simulation

作　　者：王皓 刘同宝 唐刚 孙志宇 朱祉旭 WANG Hao;LIU Tong-bao;TANG Gang;SUN Zhi-yu;ZHU Zhi-xu(State Grid Jiangsu Electric Power Co.,Ltd.Lianyungang Power Supply Company,Lianyungang 222004,China)

机构地区：[1]国网江苏省电力有限公司连云港供电分公司,江苏连云港222004

出　　处：《电工电气》2024年第2期58-62,共5页Electrotechnics Electric

摘　　要：为提高金属封闭式气体绝缘组合电器(GIS)中支柱绝缘子的耐电性与机械强度,基于有限元仿真,通过拓扑优化的方法设计了支柱绝缘子内部的材料分布,研究了材料相对介电常数与杨氏模量梯度分布后绝缘子的电场分布与机械应力场分布特性。仿真结果表明:经过拓扑优化后,合理的材料参数选择可显著降低绝缘子本体与金属嵌件所形成的界面处的最大电场强度和机械应力,相较于初始的匀质支柱绝缘子,最大电场和机械应力可分别降低40%和20%以上,为增强支柱绝缘子综合性能,提高绝缘子运行可靠性提供了技术参考。In order to improve the electrical resistance and mechanical srtength of the post insulator in the metal-enclosed Gas-Insulated Metal-Enclosed Switchgear(GIS),the material distribution inside the pillar insulator was designed by topology optimization method based on finite element simulation,and the electric field distribution and mechanical stress field distribution characteristics of the insulator after the gradient distribution of the relative permittivity and Young's modulus of the material were studied.The simulation results show that:after topological optimization,reasonable material parameter selection can significantly reduce the maximum electric field strength and mechanical stress at the interface formed by the insulator body and the metal insert.Compared with the initial uniform pillar insulator,the maximum electric field and mechanical stress can be reduced by more than 40%and 20%respectively,it provides a technical reference for enhancing the comprehensive performance of pillar insulators and improving the operational reliability of insulators.

关 键 词：金属封闭式气体绝缘组合电器 有限元仿真 支柱绝缘子 电场分布 机械应力 

分 类 号：TM216[一般工业技术—材料科学与工程] TM595[电气工程—电工理论与新技术]