中国电力2013，Vol.46Issue(4)：69-73,5.
基于指数权函数的抗差状态估计算法
A Robust State Estimation Method Based on Exponential Weight Functions
蔡凝露 1幺莉 1林济铿 1王刚 1王文杰 1罗卫华 1刘涛 1王旭东1
作者信息
摘要
Abstract
State estimation of power system is the basis of all the high level application and analysis for dispatch centers. Against the bad convergence of the WLAV (weighted least absolute value)-based state estimation method, a new robust state estimation method based on exponential weight function (E-LAV) is presented in the paper. This method uses an exponential weight function to replace the discontinues function of WLAV to improve the poor convergence. The results of the sample system of 4-node system and the IEEE 118-node system show that the E-LAV-based state estimation method not only owns the similar convergence as WLS-based method, and also owns a strong robustness. Through modifying the weight matrix of the least squares, the proposed new method has good prospects for application in practical engineering.关键词
电力系统/抗差状态估计/指数权函数/加权最小二乘Key words
power system/ robust state estimation/ exponential weight function/ weighted least absolute value分类
信息技术与安全科学引用本文复制引用
蔡凝露,幺莉,林济铿,王刚,王文杰,罗卫华,刘涛,王旭东..基于指数权函数的抗差状态估计算法[J].中国电力,2013,46(4):69-73,5.
