GIS母线柱式绝缘子支撑法兰结构优化
2021-11-28戴本圣赵艳涛张垒马志强张路阳
戴本圣 赵艳涛 张垒 马志强 张路阳



摘 要:为提高气体绝缘开关装置(Gas Insulated Switchgear,GIS)母线绝缘支撑部位的绝缘性能,提出一种通过对柱式绝缘子支撑法兰结构进行优化而提升绝缘性能的方法。利用仿真软件建立GIS母线绝缘支撑部位的电场计算模型,分析绝缘子支撑法兰结构变化对GIS母线绝缘支撑部位电场分布的影响,同时综合考虑绝缘子支撑法兰结构的工艺性和经济性,最终通过优化绝缘子支撑法兰结构提升了GIS母线绝缘支撑部位的绝缘性能。
关键词:GIS母线;柱式绝缘子;支撑法兰;结构优化
中图分类号:TM711文献标识码:A文章编号:1003-5168(2021)16-0022-03
Abstract: In order to improve the insulation performance of the GIS bus insulation support part, this paper proposes a method to improve the insulation performance by optimizing the post insulator supporting flange structure. The simulation software is used to establish the insulation support part of the GIS bus The electric field calculation model analyzes the influence of the insulator supporting flange structure change on the electric field distribution of the insulating support part of the GIS bus. At the same time, it comprehensively considers the manufacturability and economy of the insulator supporting flange structure. Finally, the insulation performance of the insulation support part of the GIS bus is improved by optimizing the insulator support flange structure.
Keywords: GIS bus;post insulator;supporting flange;structure optimization
随着现代电网系统安全稳定要求的日益严苛,气体绝缘开关装置(Gas Insulated Switchgear,GIS)以其安全可靠性高、环境适应力强及维护工作量小等优点逐渐替代了部分敞开式开关设备。GIS母线是GIS中各种組件之间的电气连接设备,具有汇聚进线电流与分配出线电流的重要功能[1-2]。
根据电网运行经验,增强GIS母线运行可靠性最有效的手段是提升GIS母线绝缘支撑部位的绝缘性能。绝缘性能的提升不仅需要降低关键位置的电场强度,而且需要整体拥有良好的绝缘配合,同时要考虑绝缘支撑部位的设计结构,减少在装配作业时异物的产生[3]。此外,在绝缘性能提升的过程中,要着重考虑产品的工艺性和经济性。目前,国内外厂家对绝缘支撑部位绝缘性能的提升大多采用优化绝缘子自身结构或改善电连接外形尺寸的方法,而针对优化绝缘子支撑法兰结构方法的研究较少[4-6]。……
