气体绝缘母线热计算及其影响因素分析

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摘要气体绝缘母线的散热性能研究是母线设计及状态检测的重要环节。分别建立了分相及三相共箱式母线涡流场、流体场以及温度场有限元分析模型, 将涡流场分析得到的焦耳热损耗作为热源间接耦合至流体场与温度场。进行温升计算时, 考虑了对流与辐射换热过程中流体密度、导热系数以及动力粘度随温度变化的特性。通过确定换热边界条件, 求解出不同结构母线的温度场分布, 与实验数据的对比验证了计算结果的正确性。应用此热计算模型研究了环境温度、气体压强以及负荷电流对不同结构母线温度场分布的影响, 所得出的结论对于母线设计及其运行期间的状态检测具有一定的参考意义。

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	李玲
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	李洪涛
	裴一乔

关键词 ：气体绝缘母线, 散热性能, 焦耳热损耗, 流体场, 温度场

Abstract：Investigation about the heat dissipation ability is important in the design and thermal state detection of gas insulated busbars (GIB). Finite element models of eddy current field, fluid field and thermal field of isolated phase and three phase in one tank type GIB were established respectively. As heat source, joule’s loss calculated in eddy current filed analysis was indirectly coupled with fluid field and thermal field. The fluid density, conductivity and dynamic viscosity were considered as functions of the temperature calculated in the convective and radiation heat transfer process. Giving the corresponding heat transfer boundary conditions, temperature distributions of GIB with different structures were achieved. The accuracy of the results is verified by the comparison with measured values. Based on the proposed model, effects of ambient temperature, gas pressure and load current on the thermal field distribution of GIB are investigated. The results are useful for the design and operation state detection of GIB.

Key words： Gas insulated busbars (GIB) heat dissipation ability joule’s loss fluid field thermal field

收稿日期: 2011-09-15 出版日期: 2014-03-20

PACS:

TM201

作者简介: 李玲女, 1974年生, 博士, 主要研究方向为电气设备状态监测与故障诊断。吴晓文男, 1986年生, 博士研究生, 主要研究方向为GIS母线温度在线监测及故障诊断。

引用本文:

李玲, 吴晓文, 李洪涛, 裴一乔. 气体绝缘母线热计算及其影响因素分析[J]. 电工技术学报, 2012, 27(9): 264-270. Li Ling, Wu Xiaowen, Li Hongtao, Pei Yiqiao. Thermal Field Calculation and Influencing Parameters Analysis of Gas Insulated Busbars. Transactions of China Electrotechnical Society, 2012, 27(9): 264-270.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I9/264

[1] 师晓岩, 查玮, 孙福, 等. UHV GIS内部温度场的红外热诊断技术[J]. 高电压技术, 2007, 33(6): 16-20.
Shi Xiaoyan, Zha Wei, Sun Fu, et al. Inner temperature distribution of UHV GIS using infrared thermo- diagnosis technology[J]. High Voltage Engineering, 2007, 33(6): 16-20.
[2] Bolin P, Koch H. Gas insulated substations GIS[C]. Transmission and Distribution Exposition Conference, Chicago, The United States, 2008.
[3] Ham J K, Kim Y K, Kim J S, et al. Heat transfer in gas-insulated bus bars[C]. Proceedings of the ASME Summer Heat Transfer Conference, Las Vegas, USA, 2003.
[4] Kim S W, Kim H H, Hahn S C, et al. Coupled finite-element-analytic technique for prediction of temperature rise in power apparatus[J]. IEEE Transactions on Magnetics, 2002, 38(2): 921-924.
[5] Kim J K, Hahn S C, Park K Y, et al. Temperature rise prediction of EHV GIS bus bar by coupled magnetothermal finite element method[J]. IEEE Transactions on Magnetics, 2005, 41(5): 1636-1639.
[6] 朱建中, 王赟中, 崔绍平, 等. 红外技术诊断高压电气设备内部缺陷[J]. 高电压技术, 2004, 30(7): 34-36.
Zhu Jianzhong, Wang Yunzhong, Cui Shaoping, et al. The application of infrared diagnosis technology in diagnosis of the high voltage electrical equipment internal defect[J]. High Voltage Engineering, 2004, 30(7): 34-36.
[7] 贾建中, 冀勇杰, 聂志荣. 红外技术诊断高压电气设备内部缺陷[J]. 电力学报, 2007, 22(2): 277-280.
Jia Jianzhong, Ji Yongjie, Nie Zhirong. Diagnosis of internal defects of HV electrical equipment by infrared technique[J]. Journal of Electric Power, 2007, 22(2): 277-280.
[8] Ho S L, Li Y, Lin X, et al. Calculations of eddy current, fluid, and thermal fields in an air insulated bus duct system[J]. IEEE Transactions on Magnetics, 2007, 43(4): 1433-1436.
[9] Hwang C C, Chang J J, Jiang Y H. Analysis of electromagnetic and thermal fields for a bus duct system[J]. Electric Power Systems Research, 1998, 45(1): 39-45.
[10] Kim H K, Oh Y H, Lee S H. Calculation of temperature rise in gas insulated busbar by coupled magneto-thermal-fluid analysis[J]. Journal of Electrical Engineering & Technology, 2009, 4(4): 510-514.
[11] 谢德馨, 姚缨英, 白保东, 等. 三维涡流场的有限元分析[M]. 北京: 机械工业出版社, 2001.
[12] 刘志刚, 耿英三, 王建华, 等. 基于流场-温度场耦合计算的新型空心电抗器设计与分析[J]. 电工技术学报, 2003, 18(6): 59-63.
Niu Zhigang, Geng Yingsan, Wang Jianhua, et al. Design and analysis of new type air-core reactor based on coupled fluid-thermal field calculation[J]. Transactions of China Electrotechnical Society, 2003, 18(6): 59-63.
[13] 路义萍, 陈鹏飞, 邓海燕, 等. 某新型通风方式空冷汽轮发电机转子三维温度场[J]. 电工技术学报, 2010, 25(11): 29-35.
Lu Yiping, Chen Pengfei, Deng Haiyan, et al. Temperature field of one air-cooled turbo-generator rotor with new ventilation type[J]. Transactions of China Electrotechnical Society, 2010, 25(11): 29-35.
[14] 纽春萍, 陈德桂, 刘颖异, 等. 交流接触器温度场仿真及影响因素的分析[J]. 电工技术学报, 2007, 22(5): 71-77.
Niu Chunping, Chen Degui, Liu Yingyi, et al. Temperature field simulation of AC contactor and analysis of its influence factors[J]. Transactions of China Electrotechnical Society, 2007, 22(5): 71-77.
[15] 赵镇南. 传热学[M]. 北京: 高等教育出版社, 2008.
[16] 孔庆安, 罗敬安, 林福本. 大电流母线的设计制造及安装[M]. 北京: 水利水电出版社, 1988.