| 引用本文: | 李 娟,周建颖,王 坤.嵌套分区算法分区无功补偿提高系统稳定裕度[J].电力自动化设备,2012,32(10): |
| LI Juan,ZHOU Jianying,WANG Kun.NP-based sectional reactive power compensation for improving system stability margin[J].Electric Power Automation Equipment,2012,32(10): |
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| 摘要: |
| 对电力系统进行分区无功补偿以提高整个电力系统的电压稳定裕度。首先定义各节点间的电气距离，即电压幅值对无功功率的灵敏度；并在此基础上将分区问题转化为数学上的优化问题。然后利用嵌套分区算法在整个分区可行解范围内对系统分区进行寻优计算，得到整个电网的分区结果。最后根据各负荷节点电压对负荷增长水平的灵敏度大小，在各分区内选择灵敏度最大的节点作为无功补偿节点，以达到提高整个系统的电压稳定裕度的目的。算例表明了所提算法有效、可行。 |
| 关键词: 电力系统 无功 补偿 分区 电气距离 灵敏度分析 嵌套分区算法 裕度 |
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| NP-based sectional reactive power compensation for improving system stability margin |
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LI Juan, ZHOU Jianying, WANG Kun
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School of Electrical Engineering，Northeast Dianli University，Jilin 132012，China
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| Abstract: |
| Sectional reactive power compensation is carried out to improve the voltage stability margin of power system. The electrical distance between nodes is defined based on the sensitivity of voltage amplitude to reactive power，which converts the partition problem into the optimization problem. NP（Nested Partitions） algorithm is applied to optimally partition the power system. The node which has the maximum sensitivity of voltage to load within a partitioned section is chosen as its reactive power compensation node to improve the voltage stability margin of the whole power system. Examples confirm the validity and feasibility of the proposed algorithm. |
| Key words: electric power systems reactive power compensation partition electrical distance sensitivity analysis nested partitions algorithm margin |
