| 特高压双回线路并联电抗器中性点小电抗的优化设计 |
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| 引用本文： | 刘海军,韩民晓,文俊,张惠媛,肖湘宁. 特高压双回线路并联电抗器中性点小电抗的优化设计[J]. 电力自动化设备, 2009, 29(11) |
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| 作者姓名： | 刘海军 韩民晓 文俊 张惠媛 肖湘宁 |
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| 作者单位： | 华北电力大学,电气与电子工程学院,北京,102206 |
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| 摘 要： | 对特高压同塔双回线路中的并联电抗器中性点接小电抗补偿潜供电流的方法进行了研究,分析了该方法补偿潜供电流的原理,得到了4种不同补偿方案下的中性点小电抗的计算公式.以淮南一上海的同塔双回特高压输电线路为例,针对实际线路中的所采用补偿方案,确定出中性点小电抗的取值范围.使用PSCAD/EMTDC仿真软件搭建数学模型,通过计算潜供电流、熄弧时间等主要的技术指标,从中选出抑制潜供电流效果最好的一组中性点小电抗参数.使用优选出的参数,分别对4种方案在不同故障类型、不同故障点位置的潜供电流进行综合比较分析,得到一种最优的补偿方案.并结合补偿效果和经济性,推荐了混合补偿方案,给设计者提供一个有价值的参考.
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| 关 键 词： | 特高压 潜供电流 恢复电压 中性点小电抗 最优补偿方案 |
Optimized neutral reactor design of shunt reactor for UHV double-circuit lines |
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| LIU Haijun,HAN Minxiao,WEN Jun,ZHANG Huiyuan,XIAO Xiangning. Optimized neutral reactor design of shunt reactor for UHV double-circuit lines[J]. Electric Power Automation Equipment, 2009, 29(11) |
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| Authors: | LIU Haijun HAN Minxiao WEN Jun ZHANG Huiyuan XIAO Xiangning |
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| Affiliation: | LIU Haijun,HAN Minxiao,WEN Jun,ZHANG Huiyuan,XIAO Xiangning (Department of Electrical , Electronic Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | The principle of secondary arc current compensation by the neutral reactor of shunt reactor for UHV double-circuit lines is discussed and the calculation formulas of neutral reactor for four compensation schemes are obtained. With Huainan-Shanghai UHV double-circuit lines as an example,its value range of present compensation scheme is determined. The math model is established by PSCAD/EMTDC and main technical indexes,such as secondary sac current and extinction time,are calculated,from which the optimal neu... |
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| Keywords: | UHV secondary arc current recovery voltage neutral reactor optimal compensation scheme |
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