An assessment framework for branch parameter estimation of power systems  

作　　者：ZHU JianQuan LIU Feng MEI ShengWei HE GuangYu 

机构地区：[1]State Key Laboratory of Power Systems,Department of Electrical Engineering,Tsinghua University,Beijing I00084,China

出　　处：《Science China(Technological Sciences)》2012年第6期1631-1643,共13页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 50977047,51007041)

摘　　要：This paper proposes an assessment framework for branch parameter estimation of power systems,based on which the estimation accuracy can be improved and the estimation reliability can be ensured.The proposed framework comprises three parts:1) Parameter credibility assessment to evaluate the credibility of original parameters in the case that their true values are unknown;2) estimation accuracy assessment to provide quantitative information about the validity of the estimation;3) parameter dominance assessment to find out the key parameters for the estimation.This framework can be incorporated into the conventional parameter estimation process easily such that the accuracy and reliability of the estimation are improved.The implementation problems are addressed in details.Tests are carried out on the IEEE 14-bus system,IEEE 30-bus system,and IEEE 300-bus system to show the correctness and effectiveness of the proposed assessment framework.

关 键 词：power systems ASSESSMENT branch parameter estimation 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术] O212.1[自动化与计算机技术—计算机科学与技术]