一种改进的混合量测电力系统状态估计算法

An improved power system state estimation method of hybrid measurement

针对目前电力系统PMU配置较少、SCADA安装较多且技术成熟的特点,采用PMU量测数据和SCADA数据融合的电力系统状态估计方法,阐述了混合量测状态估计两种模型,分析了混合非线性状态估计模型及等值WAMS系统线性状态估计方法,提出了一种基于W ard等值方法的SCADA/PMU混合量测系统的实时状态估计算法,并对该算法进行了基于MATLAB网络仿真软件的仿真测试研究,指出了算法的优点。

In the light of the characteristics that at presenting the power system PMU is allocated less, SCADA is assembled more and technology about SCADA is mature, a power system state estimation method is adopted to merge PMU measurement data and SCADA data,two models about hybrid measurement state estimation are expounded, hybrid non -linear state estimation model and WAMS equivalent linear system state estimation methods are analyzed. Real -time state estimation algorithm about SCADA/PMU hybrid measurement system based on a Ward equivalent method is brought up, and the algorithm is studied on simulation and test based on MATLAB network simulation software. Advantages about the algorithm are shown clearly.