中国电力2018，Vol.51Issue(2)：13-20,8.DOI:10.11930/j.issn.1004-9649.201612013
GIS隔离开关触头温升多场耦合数值计算与分析
The Numerical Analysis on Temperature Rise Multiphysics Coupling of GIS Disconnector Contacts
摘要
Abstract
The overheat fault of gas insulated switch-gear (GIS) disconnector contacts severely damages the reliable operation of equipment.In order to monitor the temperature rise and the overheat fault of GIS disconnector contacts,this paper establishes a 3D numerical coupled multi-physics model of eddy current-fluid-temperature of GIS with contacts.The resistance of contactor is replaced by a conductor with variable resistivity,and the current density and power loss of GIS disconnector are calculated through analyzing the electromagnetic field.The temperature of conductor and tank are calculated by using the finite element model whose heat source is power loss.The inversion law and influence factors of the temperature rise of GIS disconnector contacts are studied based on the coupled multi-physics model.The results show that the relationship between the contact of phase A,B and the temperature rise of tank is 1 ∶ 0.215,and the relationship between the contact C and the temperature rise of tank is 1 ∶ 0.165.The research results can provide theoretical basis and technical support for monitoring the temperature rise of GIS.关键词
GIS/隔离开关/多场耦合/有限元/温升Key words
GIS/disconnector/coupled multi-physics/finite element/temperature rise分类
信息技术与安全科学引用本文复制引用
周甜,李自品,沈泉宇,舒乃秋,吴远超..GIS隔离开关触头温升多场耦合数值计算与分析[J].中国电力,2018,51(2):13-20,8.基金项目
中央高校基本科研业务费专项资助项目(2012207020208).This work is supported by the Fundamental Research Funds for the Central Universities (No.2012207020208). （2012207020208）
