| 550kVGIS外壳感应环流特性的仿真分析 |
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| 引用本文： | 郭磊,范冕,姚裕安.550kVGIS外壳感应环流特性的仿真分析[J].湖北工业大学学报,2012(1):74-78. |
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| 作者姓名： | 郭磊 范冕 姚裕安 |
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| 作者单位： | 华中科技大学武昌分校;国网电力科学研究院;武汉工程大学 |
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| 摘 要： | 为解决GIS母线外壳环流带来GIS设备局部发热，加速绝缘的老化，特别是GIS外壳与地网回路中感应的入地电流造成的安全问题，通过对550kV分体结构GIS稳态运行情况下外壳感应电流的计算，研究了GIS基本设计参数对外壳感应电流的影响．计算结果表明，在考虑制造成本和其他安全要求的同时，设计时应尽量缩短GIS的相间距离，增加GIS外壳半径，增加GIS外壳接地点，减小GIS外壳接地点间距，以减小GIS外壳与地网回路中感应环流．同时，考虑到GIS端部接地点分流压力较大，在GIS接地的设计中，应适当加宽GIS端部接地点的接地引下线．
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| 关 键 词： | 全封闭式气体绝缘开关设备 电磁暂态程序 外壳感应电流 人地电流 影响因素 优化方案 |
Simulation Analysis on the Circulating Current in Bus Enclosure of the 550kV GIS |
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| GUO Lei,FAN Mian,YAO Yu-an.Simulation Analysis on the Circulating Current in Bus Enclosure of the 550kV GIS[J].Journal of Hubei University of Technology,2012(1):74-78. |
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| Authors: | GUO Lei FAN Mian YAO Yu-an |
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| Affiliation: | 1 Huazhong Univ.of Science and Technology Wuchang Branch,Wuhan 430064,China;2 State Grid Electric Power Research Institute,Wuhan 430074,China;3 Wuhan Institute of Technology,Wuhan 430074,China) |
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| Abstract: | The circulating current of bus enclosure can induce the local heat generated in GIS,which can accelerate the insulation aging and affect the transmission capacity of power system.According to calculation results,the circulating current with the three-phase sub-aspect bus in GIS,the effect factor of circulating current in design parameter are analyzed.The results show that the shorter phase distance,larger bus radius,more earthing points and shorter earthing points distance should be adopted to reduce the circulating current of bus enclosure.Meanwhile,considering that the earthing current of the two sides of GIS are larger than the middle place,the earthing conductors of the two sides of GIS should be wider when designing the grounding. |
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| Keywords: | gas insulated switchgear EMTP induced circulating current earthing current effect factors optimum proposal |
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