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| 杆塔模型对特高压变电站反击波过电压的影响 | |
| 引用本文： | 袁兆祥,李琥,项玲.杆塔模型对特高压变电站反击波过电压的影响[J].高电压技术,2008,34(5):867-872. |
| 作者姓名： | 袁兆祥 李琥 项玲 |
| 作者单位： | 1. 东南大学电气工程学院,南京,210096;国网北京经济技术研究院,北京,100761 2. 江苏省电力公司电网规划研究中心,南京,210024 3. 江苏省电力设计院,南京,210036 |
| 摘 要： | 杆塔的准确模拟对特高压变电站反击侵入波幅值影响很大,为使其模拟计算结果更准确,建立了集中电感、单波阻抗和多波阻抗3种1000kV杆塔模型;针对1000kV变电站不同的运行方式,计算分析了雷电反击侵入波。计算结果表明,不同的杆塔模型,其计算结果存在一定的差别;在特高压变电站的雷电侵入波计算中,宜采用多波阻抗模型。 |
| 关 键 词： | 杆塔模型 集中电感 单波阻抗 多波阻抗 雷电侵入波 特高压变电站 |
| 文章编号： | 1003-6520(2008)05-0867-06 |
| 修稿时间： | 2008年2月28日 |
Influence of Different Tower Models on the Lightning Back-Strike Intruding Wave Overvoltage for UHV Substation |
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| YUAN Zhao-xiang,LI Hu,XIANG Ling.Influence of Different Tower Models on the Lightning Back-Strike Intruding Wave Overvoltage for UHV Substation[J].High Voltage Engineering,2008,34(5):867-872. | |
| Authors: | YUAN Zhao-xiang LI Hu XIANG Ling |
| Affiliation: | 1.Electrical Engineering School,Southeast University,Nanjing 210096,China;2.State Power Economic Research Institute,Beijing 100761,China;3.Power System Planning Research Center,Jiangsu Electric Power Company,Nanjing 210024,China;4.Jiangsu Power Design Institute,Nanjing 210036,China) |
| Abstract: | Lightning intruding overvoltage has played an important role in determining the insulation coordination of UHV substations.There are many factors affecting the lightning intruding overvoltage in substation.Tower model is an important factor among those.Accurate modeling of the transmission tower has an important effect on the amplitude of the back-strike intruding wave in UHV substations.With the help of Electromagnetic Transient Program(EMTP),three 1000kV tower models that is lumped inductance model,single wave impedance model and multi-wave impedance model are built.Aiming at different operating mode of 1000kV substation,the intruding wave overvoltage under different tower models is calculated.The effect of tower model on intruding overvoltage has been studied.The results show that different tower models can result in great differences to the calculation results,these differences can reach about 10%.The single line operating mode would bring higher lightning overvoltage.Hence,reasonable selection of the tower model in the calculation of back-strike intruding wave is very important. |
| Keywords: | tower model lumped inductance single wave impedance multi-wave impedance lightning intruding surge UHV substation |
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