| 输电系统静态电压概率安全分析 |
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| 引用本文： | 王东涛,余贻鑫. 输电系统静态电压概率安全分析[J]. 中国电力, 2010, 43(3) |
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| 作者姓名： | 王东涛 余贻鑫 |
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| 作者单位： | 1. 天津工程师范学院自动化与电气工程学院,天津,300222
2. 天津大学电气自动化学院,天津,300072 |
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| 基金项目： | 唐山市重点实验室资助项目，天津工程师范学院科研启动项目 |
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| 摘 要： | 介绍了一种基于随机潮流和静态电压稳定域的输电系统静态电压稳定概率模型。该模型能够计及节点注入功率和元件故障的不确定性。采用随机潮流确定输电系统关键割集中线路的潮流概率分布,利用半不变量法和Gram-Charlier级数,得到割集静态电压稳定域中线路潮流的线性组合随机变量的概率分布函数;根据超平面形式的静态电压稳定域计算出静态电压不稳定概率;通过对所得概率指标进行分析,能够找到对系统静态电压不稳定概率影响最大的预想事故,分析结果可以帮助运行人员进行预防控制决策;以10机39节点New England系统为例验证了所提算法的有效性。
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| 关 键 词： | 输电系统 静态电压 概率安全分析 静态电压稳定域 随机潮流 |
Probabilistic security assessment of static voltage stability for power transmission system |
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| WANG Dong-tao,YU Yi-xin. Probabilistic security assessment of static voltage stability for power transmission system[J]. Electric Power, 2010, 43(3) |
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| Authors: | WANG Dong-tao YU Yi-xin |
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| Affiliation: | WANG Dong-tao1,YU Yi-xin2 (1.School of Automation , Electrical Engineering,Tianjin University of Technology , Education,Tianjin300222,China,2.School of Electrical , Automation Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | A probabilistic static voltage stability security assessment model based on stochastic load flow(SLF) and static voltage stability region in cut-set space (CVSR) was presented. Uncertainties in loads and generation power injections, probabilities of critical contingencies can be considered in the model. The probabilistic distribution functions(PDFs) of line flows of key cut-set were obtained by stochastic load flow, andthePDFsoflinearcombinationofline flows in CVSR were deduced by Gram-Charlier progression ... |
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| Keywords: | power transmission system static voltage probability security assessment CVSR SLF |
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