电力系统状态估计算法的研究现状和展望

为了保证电力系统的安全性和经济性,状态估计是能量管理系统(EMS)中不可或缺的组成部分。状态估计算法是状态估计的核心部分。综述了电力系统状态估计的研究现状。简要介绍了电力系统状态估计的基本概念及功能,描述了状态估计的数学模型。介绍了几种目前常用的估计算法,即加权最小二乘法、快速分解法、基于量测变换的状态估计算法等,并对这些算法作了简明的对比,指出各个算法的优缺点。最后,对状态估计算法中值得研究的方面进行展望。

Status quo and prospect of algorithm of power system state estimation

State estimation is regarded as an essential part of Energy Management System(EMS) due to the economy and security of power system.Algorithms of state estimation are the core of state estimation.The status quo and prospect of power system state estimation are surveyed.The fundamental concept and function of power system state estimation are offered briefly and the mathematical model of state estimation is described.some usual algorithms of state estimation are offered and compared briefly,such as recursive least square algorithm,fast decoupled method,state estimation method based on measurement transformation,etc.Then the advantages and disadvantages of each algorithm are pointed out.At last,some important aspects to be studied further for the algorithms of state estimation are proposed.