| 隔离开关操作速度对特快速瞬态过电压的影响 |
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| 引用本文： | 韩彬,林集明,陈维江,班连庚,项祖涛,陈国强.隔离开关操作速度对特快速瞬态过电压的影响[J].中国电机工程学报,2011,31(31). |
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| 作者姓名： | 韩彬 林集明 陈维江 班连庚 项祖涛 陈国强 |
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| 作者单位： | 1. 中国电力科学研究院,北京市海淀区,100192
2. 国家电网公司,北京市西城区,100031 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(2011CB209405); 国家电网公司科技项目(SGCC[2011])(特高压GIS(HGIS)设备VFTO实测及仿真研究)~~ |
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| 摘 要： | 气体绝缘开关设备（gas insulated switchgear,GIS）内的隔离开关在操作空载短母线时会发生多次击穿,并产生特快速瞬态过电压（very fast transient overvoltage,VFTO）,严重时可能造成变压器和其他电气设备的损坏。隔离开关的操作速度是影响VFTO的重要因素之一,对此国内外有不同看法。在仿真研究中考虑了隔离开关操作过程中的多次重击穿、间隙击穿电压的极性特性、概率特性及其随操作速度变化的特性,采用统计分析方法研究了隔离开关的速度对VFTO的影响,并与实测结果进行了对比。研究结果表明,在一定范围内当隔离开关速度较慢时,分闸后负载侧残压较低,合闸、分闸操作过程中产生的VFTO幅值也较低。
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| 关 键 词： | 特高压 特快速瞬态过电压 气体绝缘开关设备 隔离开关 |
Analysis on the Influence of the Switching Speed of Disconnector on Very Fast Transient Overvoltage |
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| HAN Bin,LIN Jiming,CHEN Weijiang,BAN Liangeng,XIANG Zutao,CHEN Guoqiang.Analysis on the Influence of the Switching Speed of Disconnector on Very Fast Transient Overvoltage[J].Proceedings of the CSEE,2011,31(31). |
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| Authors: | HAN Bin LIN Jiming CHEN Weijiang BAN Liangeng XIANG Zutao CHEN Guoqiang |
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| Affiliation: | HAN Bin1,LIN Jiming1,CHEN Weijiang2,BAN Liangeng1,XIANG Zutao1,CHEN Guoqiang2(1.China Electric Power Research Institute,Haidian District,Beijing 100192,China,2.State Grid Corporation of China,Xicheng District,Beijing 100031,China) |
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| Abstract: | During the switching of the disconnectors in gas insulated switchgear(GIS),repeated strikes of the contact gap will lead to very fast transient overvoltage(VFTO) with high amplitude and steepness.Severe VFTO may damage transformers and other equipment.One of the important influential factors on VFTO is the switching speed of the disconnector,and there are still different opinions on this factor.In this paper the whole repeated strike process associated with the switching operation of the disconnector was si... |
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| Keywords: | ultra high voltage(UHV) very fast transient overvoltages(VFTO) gas insulated switchgear(GIS) disconnector |
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