| 考虑零注入约束的双线性WLAV状态估计 |
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| 引用本文： | 沈甜甜,黄启建,吴常胜,孙国强,卫志农,臧海祥.考虑零注入约束的双线性WLAV状态估计[J].河海大学学报(自然科学版),2017,45(6):556-561. |
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| 作者姓名： | 沈甜甜 黄启建 吴常胜 孙国强 卫志农 臧海祥 |
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| 作者单位： | 河海大学能源与电气学院, 江苏 南京 210098,国网池州供电公司, 安徽 池州 247000,国网池州供电公司, 安徽 池州 247000,河海大学能源与电气学院, 江苏 南京 210098,河海大学能源与电气学院, 江苏 南京 210098,河海大学能源与电气学院, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金(51277052,51507052) |
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| 摘 要： | 零注入节点功率失配量对电力系统安全评估有着重要影响,为减小零注入节点的功率失配量,提出了考虑零注入约束的双线性WLAV(Weighted Least Absolute Value)状态估计方法,该方法将零注入约束以等式约束的形式添加到双线性WLAV状态估计中。基于IEEE标准系统,采用零注入约束的双线性WLAV状态估计方法对国内某省网进行仿真,结果表明:该方法既能保留基于内点法的双线性WLAV状态估计原有的计算效率高的优点,又能减小零注入节点的功率失配量,且抗差性能有一定程度的提升。
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| 关 键 词： | 电力系统 状态估计 零注入 等式约束 内点法 失配量 |
| 收稿时间： | 2016/11/21 0:00:00 |
Power system state estimation using bilinear WLAV method with zero injection constraints |
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| SHEN Tiantian,HUANG Qijian,WU Changsheng,SUN Guoqiang,WEI Zhinong and ZANG Haixiang.Power system state estimation using bilinear WLAV method with zero injection constraints[J].Journal of Hohai University (Natural Sciences ),2017,45(6):556-561. |
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| Authors: | SHEN Tiantian HUANG Qijian WU Changsheng SUN Guoqiang WEI Zhinong and ZANG Haixiang |
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| Institution: | College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China,Chizhou Power Supply Company, Chizhou 247000, China,Chizhou Power Supply Company, Chizhou 247000, China,College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China,College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China and College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | Power mismatches of zero injection nodes have significant impact on the security estimation of the power system. In this paper, a novel state estimation method for the power system is proposed to reduce the power mismatches of zero injection nodes, in which zero injection constraints are added in the form of equality constraints in the bilinear WLAV(Weighted Least Absolute Value). Based on the IEEE standard system, a case study on a provincial system is performed using this method. The results demonstrate that this method can not only ensure the existing high computational efficiency of bilinear WLAV based on interior point method, but also reduce the power mismatches of zero injection nodes. Meanwhile, its robustness is improved to a certain degree. |
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| Keywords: | power system state estimation zero injection equality constraints interior point method mismatch |
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