SF6/N2混合气体介质条件下GIL管道气室结构多目标优化研究  

Research on Multi-objective Optimization of GIL Pipeline Gas Room Structure Under SF6/N2 Mixed Gas Medium

作　　者：李鹏洋 吴细秀[1,2] 徐思恩 孟培培 侯慧[1,2] 李黎 LI Pengyang;WU Xixiu;XU Sien;MENG Peipei;HOU Hui;LI Li(School of Automation,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Power Grid Environment Protection(China Electrical Power Research Institute),Wuhan 430074,China;School of Electrical and Electronic Engineering,Huazhong University of Science&Technology,Wuhan 430074,China)

机构地区：[1]武汉理工大学自动化学院,武汉430070 [2]电网环境保护国家重点实验室(中国电力科学研究院有限公司),武汉430074 [3]华中科技大学电气与电子工程学院,武汉430074

出　　处：《高电压技术》2025年第4期1944-1957,共14页High Voltage Engineering

基　　金：电网环境保护国家重点实验室开放基金(GYW51201901085)。

摘　　要：小型化、环保化是电气设备发展的必然趋势,为此开展了以减小气体绝缘输电线路(gas insulated transmission lines,GIL)管道结构尺寸为目的的多目标优化研究。提出了GIL气室内绝缘判断依据,建立了评估GIL气室绝缘裕度的多物理场耦合模型,分析了GIL管道结构参数对绝缘、温升性能的影响,提取了GIL结构尺寸优化参数。在考虑GIL气室的绝缘性能、温升性能和尺寸优化成本的基础上,开展管道结构多目标优化研究。通过多项式响应面模型拟合了结构参数与GIL场强、温升之间的函数关系,并确定了优化目标和相应的约束条件,采用NSGA-Ⅱ算法对结构参数进行寻优计算。结果表明:通过优化,GIL管道尺寸减小了10%,气室内的绝缘裕度提升了6%,温升下降了19.6%,相应的材料成本也降低了34.6%,整体优化效果良好。该研究为GIL小型化发展提供有益参考。Miniaturization and environmental protection are the essential development trend of electrical equipment.To this end,the paper carries out a multi-objective optimization study aimed at reducing the structural size of the GIL pipeline.Initially,the basis of GIL gas room insulation judgment was proposed,a multi-physical field coupling model for assessing the insulation margin of GIL gas room was established,the influences of GIL pipeline structural parameters on insulation and temperature rise performance were analyzed,and the optimization parameters of GIL structural dimensions were extracted.Based on the consideration of insulation performance,temperature rise performance,and cost of size optimization of GIL gas room,a multi-objective optimization study of pipeline structure was carried out.The response surface model was used to fit the functional relationship between the structural parameters and the GIL field strength and temperature rise,while the optimization objective and the corresponding constraints were determined,and the NSGA-Ⅱalgorithm was used for the optimization-seeking calculation of the structural parameters.The results show that,through optimization,the optimized GIL pipeline size can be reduced by 10%,the insulation margin of the GIL gas room is improved by 6%,the temperature rise is decreased by 19.6%,the manufacturing cost is reduced by 34.6%,and the overall optimization effect is good.The research provides a useful reference for the development of GIL miniaturization.

关 键 词：气体绝缘金属封闭输电线路 内绝缘水平 响应面模型 NSGA-Ⅱ 多目标优化 

分 类 号：TM726[电气工程—电力系统及自动化] TM75