| 基于零阻抗支路模型的变电站三相非线性状态估计方法 |
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| 引用本文： | 李青芯,孙宏斌,王晶,张伯明,吴文传,郭庆来.基于零阻抗支路模型的变电站三相非线性状态估计方法[J].中国电机工程学报,2011,31(25). |
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| 作者姓名： | 李青芯 孙宏斌 王晶 张伯明 吴文传 郭庆来 |
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| 作者单位： | 电力系统及发电设备控制和仿真国家重点实验室（清华大学电机系）,北京市海淀区,100084 |
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| 基金项目： | 国家杰出青年科学基金项目(51025725)~~ |
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| 摘 要： | 为了将拓扑和量测错误解决于变电站内，提高调度中心状态估计的可靠性和精度，提出一种基于零阻抗支路的变电站三相非线性状态估计方法。该方法充分利用了变电站内冗余的多源量测数据，包括远方终端单元（remote terminalunit，RTU）和相量量测单元（phasor measurement unit，PMO）的三相量测数据，基于基尔霍夫电流定律（Kirchoff’s current law，KCL）建立了面向开关的非线性三相零阻抗状态估计模型，实现了模拟量坏数据和拓扑错误的解耦辨识以及对三相不平衡度的实时监控，具有高冗余、估计结果可靠、计算速度快和易于实现等特点。算例分析验证了方法的有效性。
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| 关 键 词： | 三相 变电站状态估计 坏数据辨识 拓扑错误辨识 |
Zero Impedance Branch Based Substation Three-phase Nonlinear State Estimation Method |
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| LI Qingxin,SUN Hongbin,WANG Jing,ZHANG Boming,WU Wenchuan,GUO Qinglai,Haidian District,Beijing ,China.Zero Impedance Branch Based Substation Three-phase Nonlinear State Estimation Method[J].Proceedings of the CSEE,2011,31(25). |
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| Authors: | LI Qingxin SUN Hongbin WANG Jing ZHANG Boming WU Wenchuan GUO Qinglai Haidian District Beijing China |
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| Affiliation: | LI Qingxin,SUN Hongbin,WANG Jing,ZHANG Boming,WU Wenchuan,GUO Qinglai(State Key Lab of Control and Simulation of Power Systems and Generation Equipments(Dept.of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China) |
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| Abstract: | A substation three-phase nonlinear state estimation method based on zero impedance branches is presented in order to eliminate topology and analogy errors at substation level and accordingly enhance the control center state estimation reliability and accuracy.Measurements from different apparatus are utilized in substation,such as remote terminal unit(RTU) and phasor measurement unit(PMU) three-phase data.A breaker-oriented nonlinear three-phase state estimation model is established on Kirchoff's current la... |
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| Keywords: | three-phase substation state estimation bad data identification topology error identification |
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