摘要
气体绝缘输电线路(GIL)以其良好的性能在全世界范围内得到了一定应用。绝缘气体的散热性能和GIL的温升效应是GIL设计和在线监测的重要环节。本文通过建立包含外部空气域在内的模型,运用有限元法对采用20%SF_6-80%N_2混合气体绝缘的第二代GIL进行了温升仿真计算,得到第二代GIL的整体温度分布以及导体和外壳温升,并与解析法得到的温升情况进行对比,证明了所提方法的有效性;同时对影响第二代GIL温升的相关因素进行了仿真分析,为第二代GIL的进一步应用提供了参考。
Gas insulated transmission line(GIL)is used worldwide as its excellent performance.The heat dissipation of the insulating gas and the temperature rise effect are the key points of the designand on-line monitoring of the GIL.This paper builds a model of the second-generation GIL whichcontains the external air field,with20%SF6-80%N2as its insulating gas.The temperature rise issimulated by finite element method(FEM).The overall temperature distribution of GIL has beenachieved,and the temperature rise of conductor and enclosure has also been derived.In comparisonwith the results achieved by analytical method,the effectiveness of the FEM method has been verified.The relevant factors that affect the temperature rise of the second-generation GIL are also simulatedand analyzed.This paper provides a reference for the further application of the GIL.
作者
李冰
肖登明
赵谡
张辉
Li Bing;Xiao Dengming;Zhao Su;Zhang Hui(Department of Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第13期271-276,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目(51337006
51177101)
国家电网公司科技项目(环境友好型中压开关绝缘技术研究)资助
关键词
温升计算
有限元法
SF6-N2
混合气体
第二代气体绝缘输电线路
Temperature rise calculation, finite element method, SF6-N2 gas mixture, the second generation gas insulated transmission line
