| 三相GIS母线损耗发热的电磁场-流场-温度场计算分析 |
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| 引用本文： | 罗建华,范镇南,田劲,赵斌.三相GIS母线损耗发热的电磁场-流场-温度场计算分析[J].电站系统工程,2010,26(4). |
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| 作者姓名： | 罗建华 范镇南 田劲 赵斌 |
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| 作者单位： | 国家电网四川电力职业技术学院(四川省电力公司培训中心);重庆大学;国家电网内江电业局; |
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| 摘 要： | 为深入研究三相气体绝缘组合电器(gas insulated switchgear,简称GIS)母线筒的损耗发热问题,运用有限元方法,建立了该类母线损耗发热的电磁场-流场-温度场综合求解模型,在综合考虑集肤效应、涡流损耗、气体流动、以及重力等多种因素影响的基础上,计算分析了该类母线的热源和温度分布规律。结果表明:GIS母线电流和损耗的分布都体现出集肤效应。对于水平放置的三相GIS母线,当三相电流对称时,上方母线导体温度高于下方母线导体,金属外壳的最高温度出现在离上方导体较近的上部壳体,且上方导体附近的气体等温线分布也呈现较为明显的S状弯曲,而位于下方导体周围的气体,其等温线扭曲程度相对较小。当电流对称性遭到破坏,则损耗和温度分布的对称性不复存在。
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| 关 键 词： | 电磁场 流场 温度场 GIS母线 损耗 发热 |
The Electromagnetic-Fluid-Temperature Field Calculation and Analysis about the Loss and Heat of Three-Phase GIS Bus Bar |
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| LUO Jian-hua,FAN Zhen-nan,TIAN Jin,ZHAO Bin.The Electromagnetic-Fluid-Temperature Field Calculation and Analysis about the Loss and Heat of Three-Phase GIS Bus Bar[J].Power System Engineering,2010,26(4). |
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| Authors: | LUO Jian-hua FAN Zhen-nan TIAN Jin ZHAO Bin |
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| Affiliation: | LUO Jian-hua,FAN Zhen-nan,TIAN Jin,ZHAO Bin |
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| Abstract: | To study the loss and heat problem of three-phase gas insulated switchgear (GIS) bus bar thoroughly, the electromagnetic-fluid-temperature field model of the GIS bus are established by finite element method, considering the factors such as skin effect, eddy loss, gas flow and gravity, furthermore, the heat source and temperature distribution of the GIS bus are calculated and analyzed.The results show that the current and loss density distribution of GIS bus accord with skin effect.For the horizontal three-p... |
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| Keywords: | electromagnetic field fluid field temperature field GIS bus bar loss heat |
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