基于广义状态估计的拓扑错误快速识别方法  

Fast Identification Method of Topology Errors Based on Generalized State Estimation

作　　者：王栋[1] 梁正堂 李玉敦 张强 陈芳[1] WANG Dong;LIANG Zhengtang;LI Yudun;ZHANG Qiang;CHEN Fang(University of Jinan,Jinan 250000,China;State Grid Shandong Electric Power Research Institute,Jinan 250003,China;State Grid Shandong Electric Power Company,Jinan 250003,China)

机构地区：[1]济南大学,山东济南250000 [2]国网山东省电力公司电力科学研究院,山东济南250003 [3]国网山东省电力公司,山东济南250003

出　　处：《山东电力技术》2023年第2期26-32,共7页Shandong Electric Power

基　　金：国网山东省电力公司科技项目“基于数据驱动的调度自动化系统主子站协同互动与脆弱性防御技术研究及应用”(520626200065)。

摘　　要：为提高开关拓扑识别的速度,简化识别过程中的计算量,提出一种快速识别站内开关拓扑错误的方法。该方法对广义状态估计模型中的约束方程进行重新描述,根据约束方程的特点将全局状态向量解耦,解耦后的状态向量分为独立向量与依赖向量;采用独立状态向量表示量测方程,并据此分析了量测雅可比矩阵结构,进而简化了迭代方程,降低了矩阵的维数,在目标函数不变的情况下,将全局求解分为两步完成;通过量测残差识别模拟量不良数据,通过仅对残差较大的可疑厂站计算的拉格朗日乘子识别开关元件状态的错误。最后,以山东某地区110 kV站为例验证了所提模型与方法的有效性,根据试验结果得出所提方法计算迭代矩阵维数更低,所占内存更少,计算速度更快。In order to improve the speed of breaker topology identification and simplify the amount of calculation in the identification process,a fast identification method of breaker topology errors in the station was proposed.Firstly,the constraint equations in the generalized state estimation model were redescribed,and the global state vectors were decoupled into independent vectors and dependent vectors according to the characteristics of the constraint equations.Then,the measurement equation was represented by independent state vectors,and the structure of the measurement Jacobian matrix and determinant was analyzed accordingly,which simplifies the iterative equation and reduces the dimension of the matrix.The global solution was divided into two steps with the objective function unchanged.Furthermore,the analog bad data was identified by the measurement residual,and the state error of the breaker element was identified only by the Lagrangian multiplier calculated for the suspicious power station with large residual. Finally,a 110 kV station in Shandong Province was taken as an example to verify the effectiveness of the proposed model and method.According to the experimental results,it is concluded that the iterative matrix dimension of the proposed method is lower,the memory is less,and the calculation speed is faster.

关 键 词：广义状态估计 开关元件 拓扑错误识别 电力系统 

分 类 号：TM711[电气工程—电力系统及自动化]