| 限制500 kV电网短路电流的网架调整优化算法 |
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| 引用本文： | 张永康,蔡泽祥,李爱民,徐敏. 限制500 kV电网短路电流的网架调整优化算法[J]. 电力系统自动化, 2009, 33(22): 34-39 |
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| 作者姓名： | 张永康 蔡泽祥 李爱民 徐敏 |
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| 作者单位： | 华南理工大学电力学院,广东省广州市,510640 |
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| 摘 要： | 通过开断部分线路调整500 kV网架结构以增加超标站点之间的电气距离,是限制500 kV电网短路电流的有效措施.对于开断线路的选择既要考虑短路电流的限制效果,又要尽量保持500 kV网架的完整性,如何从上千种断线组合中,选取一种开断最少线路以最大限度限制超标站点短路电流的断线组合极为困难.文中通过分析开断线路对阻抗矩阵各元素的影响,推导开断线路与超标站点自阻抗变化的灵敏度关系,并以该灵敏度为指标提出了一种限制500 kV短路电流的网架调整优化算法.该算法通过求取超标站点自阻抗灵敏度加权和的最大值,可以快速寻找限制超标点短路电流的最优断线组合,避免了对所有断线组合逐一进行校核的繁琐过程.基于该算法提出的广东电网500 kV调整方案证明了其有效性.
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| 关 键 词： | 短路电流限制 自阻抗灵敏度 优化算法 |
| 收稿时间： | 2009-04-22 |
| 修稿时间： | 2009-11-09 |
An Optimization Algorithm for Short-circuit Current Limitation of 500 kV Power Grid by Adjusting Power Grid Configuration |
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| ZHANG Yongkang,CAI Zexiang,LI Aimin,XU Min. An Optimization Algorithm for Short-circuit Current Limitation of 500 kV Power Grid by Adjusting Power Grid Configuration[J]. Automation of Electric Power Systems, 2009, 33(22): 34-39 |
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| Authors: | ZHANG Yongkang CAI Zexiang LI Aimin XU Min |
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| Affiliation: | ZHANG Yongkang,CAI Zexiang,LI Aimin,XU Min (South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | Breaking parts of transmission lines can increase the electric distance among over standard substations and it is an effective measure of limiting short-circuit current of 500 kV power grid. As regards the choices of breaking transmission lines,the restrictive effect of short-circuit current should be considered as well as the integrality of 500 kV power grid. Moreover,it is extremely difficult to seek a combination of breaking transmission lines from thousands of combinations,which can limit short-circuit ... |
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| Keywords: | short-circuit current limitation sensitivity of self-impedance optimization algorithm |
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