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

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典型隔离开关与电流互感器的热场分析

来源:电工电气发布时间:2017-10-19 13:19 浏览次数:7
典型隔离开关与电流互感器的热场分析
 
李佳1,张斌2
(1 中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065;2 国网浙江省电力公司宁波供电公司,浙江 宁波 315200)
 
    摘 要:隔离开关与电流互感器是电力系统的重要设备,对其进行热场分析与计算对于确保系统增容运行时的安全具有重要意义。针对典型隔离开关与电流互感器设备,应用热路模型法对其进行热场分析。模型包含稳态热场和动态热场两部分,并在建模过程中考虑了环境因素的影响。通过校验发现,模型计算结果与温升试验中现场实测结果偏差不超过10%,说明建立的隔离开关热路模型与电流互感器热路模型具有较高的准确性。
    关键词:隔离开关;电流互感器;热场分析;热路模型;温升试验
    中图分类号:TM452;TM564.1     文献标识码:A     文章编号:1007-3175(2017)10-0026-04
 
Thermal Field Analysis of Typical Disconnector and Current Transformer
 
LI Jia1, ZHANG Bin2
(1 Northwest Engineering Corporation Limited, Power Construction Corporation of China, Xi’an 710065, China;
2 State Grid Zhejiang Electric Power Company Ningbo Power Supply Company, Ningbo 315200, China)
 
    Abstract: Disconnectors and current transformers are essential equipments in power system, so the thermal field analysis of these devices is crucial for the safety capacity-increase operation of power system. Aiming at the typical disconnectors and current transformers equipments, this paper applied the thermal circuit models to carry out thermal field analysis. The model included the steady thermal field and dynamic thermal field and the environmental factors were considered in the modeling process. Verification shows that the model calculation results and the experimental data meet well as the deviation is within 10%, which indicates that the establishing of thermal circuit models of disconnectors and current transformers have higher accuracy.
    Key words: disconnector; current transformer; thermal field analysis; thermal circuit model; temperature-rising test
 
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