Study on Multi-physical Field Coupling Mechanism of Three-phase GIS Bus Temperature Rise Based on Mixed Insulating Gas

WANG Keke; LI Li; WANG Jiuyang; REN Lingling

doi:10.13296/j.1001-1609.hva.2021.04.011

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Study on Multi-physical Field Coupling Mechanism of Three-phase GIS Bus Temperature Rise Based on Mixed Insulating Gas

更新时间：2025-04-26

- Study on Multi-physical Field Coupling Mechanism of Three-phase GIS Bus Temperature Rise Based on Mixed Insulating Gas
- High VoltageApparatus Vol. 57, Issue 4, Pages: 69-75(2021)
- 作者机构：
  
  1. 辽宁工程技术大学电气与控制工程学院
  2. 南京电子技术研究所
  3. 国网阜新供电公司
  4. 国网葫芦岛供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.04.011
  CLC： TM595
- Published：2021
- 稿件说明：
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[1]王珂珂,李丽,王久阳,任玲玲.基于混合绝缘气体的三相GIS母线温升多物理场耦合机制研究[J].高压电器,2021,57(04):69-75.

WANG Keke, LI Li, WANG Jiuyang, et al. Study on Multi-physical Field Coupling Mechanism of Three-phase GIS Bus Temperature Rise Based on Mixed Insulating Gas[J]. High voltageapparatus, 2021, 57(4): 69-75.
[1]王珂珂,李丽,王久阳,任玲玲.基于混合绝缘气体的三相GIS母线温升多物理场耦合机制研究[J].高压电器,2021,57(04):69-75. DOI： 10.13296/j.1001-1609.hva.2021.04.011.

WANG Keke, LI Li, WANG Jiuyang, et al. Study on Multi-physical Field Coupling Mechanism of Three-phase GIS Bus Temperature Rise Based on Mixed Insulating Gas[J]. High voltageapparatus, 2021, 57(4): 69-75. DOI： 10.13296/j.1001-1609.hva.2021.04.011.

摘要

针对气体绝缘金属封闭开关设备（GIS）母线温升影响设备可靠性问题

对充有30%SF

～70%N2混合环保气体的三相GIS母线进行了电磁—流体—热多物理场耦合仿真分析

采用流体多组分传输的有限元分析方法

研究了GIS母线上电磁场与温度场的分布规律。仿真结果表明:GIS内上方区域由于强对流作用

温差不大

下方区域由于气体对流速度慢

温度呈左右对称、上高下低的阶梯状分布;B相电磁场强度最大

由于受到相邻相的影响温度最高;以B相母线导体、壳体为例分析

外壳与导体的温升跟随负荷电流增大而增加;随着气体压强的增加温升渐渐降低;GIS外壳与导体的温升与环境温度间成线性关系;提高混合气体压强

能有效减少GIS导体的温升。对某变电站的GIS系统进行测试结果表明

仿真模型能有效模拟GIS母线发热情况。

Abstract

In view of the problem that the temperature rise of the GAS insulated SWITCHGEAR（GIS）bus bar affects the reliability of the equipment

the electromagnetic-fluid-thermal multi-physical coupling simulation analysis was carried out on the three-phase GIS bus bar filled with 30%SF

～70%N2 mixed environmental gas. The distribution law of electromagnetic field and temperature field on the busbar of GIS was studied by using the finite element analysis method of fluid multi-component transmission. The simulation results show that the upper area in the GIS has little temperature difference due to stro

ng convection

and the temperature is symmetrical with a stepped distribution of upper and lower temperatures due to the slow gas convection speed in the lower area. The electromagnetic field strength in phase B is maximum and the temperature is maximum due to the influence of adjacent phases. The conductor and enclosure of busbar in phase B are taken as an example for analysis

the temperature rise of the enclosure and conductor increases with the increase of load current. The temperature rise decreases gradually with the increase of intensity of gas pressure. The temperature rise of enclosure and conductor of GIS and ambient temperature is of linear relationship. Improving the intensity of pressure of gas mixture can reduce the temperature rise of the conductor of GIS effectively. It is shown by the test of GIS system at certain substation that the simulation model can simulate the heating of bus bar of GIS effectively.

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