Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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不同影响因素下GIS温度场分布特性仿真研究

来源:电工电气发布时间:2024-05-08 09:08 浏览次数:357

不同影响因素下GIS温度场分布特性仿真研究

何龙,马金财,郑义,朱咏明,刁海洋,张保明
(国网新疆电力有限公司昌吉供电公司,新疆 昌吉 831100)
 
    摘 要:气体绝缘金属封闭开关设备(GIS)在电力系统应用中存在发热损耗难以检测、电流密度大、涡流损耗大等问题。通过电磁-流场-热场的多物理场耦合模拟,探讨了 GIS 的电磁场和温度场分布特性,揭示出其分布规律,并分析了有无日照辐射、额定电流大小和环境温度大小这 3 种因素对 GIS 温度分布的影响。仿真结果表明:在 GIS 的横截面上,其温度分布呈现出左右对称、上部高于下部的物理规律;日照辐射对 GIS 温度提升有显著影响;运行电流的大小对 GIS 温升的影响最大;外部环境温度对 GIS 温升的影响效果不太明显。
    关键词: 气体绝缘金属封闭开关设备;电磁分布;温度分布;影响因素
    中图分类号:TM564 ;TM595     文献标识码:B     文章编号:1007-3175(2024)04-0048-06
 
Simulation Research on GIS Temperature Field Distribution
Characteristics Under Different Influence Factors
 
HE Long, MA Jin-cai, ZHENG Yi, ZHU Yong-ming, DIAO Hai-yang, ZHANG Bao-ming
(State Grid Xinjiang Electric Power Co., Ltd. Changji Electric Power Supply Company, Changji 831100, China)
 
    Abstract: In the application of Gas-Insulated Switchgear (GIS) in the power system, there are lots of problems such as difficult detection of heat loss, high current density, and large eddy current loss. Therefore, in this study, the electromagnetic and temperature field distribution characteristics of GIS are explored and their distribution rules are revealed through the multi-physics field coupling simulation of electromagnet-flow-thermal fields. At the same time, the influence of light radiation, rated current and ambient temperature on GIS temperature distribution is analyzed. The simulation results show that in the cross section of GIS, the temperature distribution is bilaterally symmetrical, and the upper part is higher than the lower part; light radiation has a significant effect on the temperature rise of GIS; the value of the operating current has the greatest influence on the temperature rise of GIS; the effect of external ambient temperature on GIS temperature rise is not obvious.
    Key words: gas-insulated switchgear; electromagnetic distribution; temperature distribution; influencing factor
 
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