基于同步测量信息的电网拓扑错误辨识方法

Topology error identification based on synchronized measurements for power network

将相量测量单元(PMU)提供的同步测量信息引入到拓扑错误辨识中,提出了一种基于同步测量信息的拓扑错误辨识算法以提高电网拓扑分析的可靠性。该算法首先在对拓扑错误进行显性、隐性分类的基础上,构建错误辨识准则,然后结合图的矩阵运算,确定PMU所量测的开关量和模拟量之间的判别关系,最后根据判别结果,对各类拓扑错误进行有效辨识。仿真算例表明,该算法能够准确对单个拓扑错误、多个拓扑错误以及同时存在多个不良数据与多个拓扑错误的情况进行有效辨识,具有可靠性高、容错能力强等优点。

The synchronized measurement information of PMUs is introduced to the identification of topology error to improve the reliability of network topology analysis.The introduced identification algorithm establishes the identification rules based on the classification of overt and covert errors and combines with the graphic matrix operation to determine the discriminant relation between the analog and binary measurements provided by PMU,based on which the topology errors are identified effectively.Simulations for the single topology error,multiple topology errors and multiple topology errors with multiple bad data validate its high reliability and error-tolerance capability.