GIS隔离开关触头温升多场耦合数值计算与分析

doi:10.11930/j.issn.1004-9649.201612013

中国电力 ›› 2018, Vol. 51 ›› Issue (2): 13-20.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

周甜, 李自品, 沈泉宇, 舒乃秋, 吴远超

武汉大学电气工程学院, 湖北武汉 430072

收稿日期:2016-12-08 修回日期:2017-04-21 出版日期:2018-02-05 发布日期:2018-02-11
作者简介:周甜(1993—),陕西西安人,女,硕士研究生,从事电力设备在线监测及故障诊断研究,E-mail:tianzhou@whu.edu.cn。
基金资助:
中央高校基本科研业务费专项资助项目（2012207020208）。

The Numerical Analysis on Temperature Rise Multiphysics Coupling of GIS Disconnector Contacts

ZHOU Tian, LI Zipin, SHEN Quanyu, SHU Naiqiu, WU Yuanchao

School of Electrical Engineering, Wuhan University, Wuhan 430072, China

Received:2016-12-08 Revised:2017-04-21 Online:2018-02-05 Published:2018-02-11
Supported by:
This work is supported by the Fundamental Research Funds for the Central Universities (No.2012207020208).

摘要/Abstract

摘要： GIS隔离开关触头过热性故障严重危害设备的可靠运行，为实现对GIS隔离开关触头温升和过热性故障的监测，建立了包含触头的GIS隔离开关的三维涡流-流体-温度多场耦合数值计算模型，用一段电阻率可变的导体来模拟触头部位的接触电阻，通过电磁场分析计算GIS隔离开关各个部位的电流密度和功率损耗，将功率损耗作为热源载荷代入流体-温度场耦合计算模型计算导体和外壳的温度场分布。基于该模型研究了GIS隔离开关触头温升反演规律及影响因素，结果表明A、B相触头与外壳温升存在1∶0.215的对应关系，C相触头与外壳温升存在1∶0.165的对应关系，研究成果可为开展GIS隔离开关的温升监测提供理论依据与技术支持。

关键词: GIS, 隔离开关, 多场耦合, 有限元, 温升

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.

Key words: GIS, disconnector, coupled multi-physics, finite element, temperature rise

中图分类号:

TM561

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.

ZHOU Tian, LI Zipin, SHEN Quanyu, SHU Naiqiu, WU Yuanchao. The Numerical Analysis on Temperature Rise Multiphysics Coupling of GIS Disconnector Contacts[J]. Electric Power, 2018, 51(2): 13-20.

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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

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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

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