电力系统自动化2018，Vol.42Issue(1)：8-15,8.DOI:10.7500/AEPS20161213006
基于不确定测度的电力系统抗差状态估计(一)理论基础
Uncertain Measure Based Robust State Estimation of Power System Part One Theoretical Principle
摘要
Abstract
The theoretical basis of traditional power system state estimation is the law of large numbers based on traditional statistics,that is,when the number of measurements approaches infinity,the estimated value approximates to the true value with 1 probability.However,the number of measurements in the actual system is limited and sometimes even small,there is no theoretic guarantee for the evaluation index and estimation precision of the traditional state estimation.In view of this situation,the paper introduces the concept of uncertain measure under the uncertainty theory system,and explains the difference and relation among the uncertain measure,uncertainty of measurement and measurement error in the state estimation.Furthermore,the normal measurement,abnormal measurement and normal rate are redefined under the uncertainty theory system.And a new evaluation index of state estimation result considering the normal rate and the measurement deviation degree from the true value is proposed and the rationality is proved.关键词
状态估计/不确定测度/不确定理论/正常率/偏离度Key words
state estimation/uncertain measure/uncertainty theory/normal rate/deviation引用本文复制引用
陈艳波,谢瀚阳,王金丽,王鹏,薛儒涛,王若兰..基于不确定测度的电力系统抗差状态估计(一)理论基础[J].电力系统自动化,2018,42(1):8-15,8.基金项目
国家自然科学基金资助项目(51407069) （51407069）
中央高校基本科研业务费专项资金资助项目(2016YQ02).This work is supported by National Natural Science Foundation of China(No.51407069)and Fundamental Research Funds for the Central Universities(No.2016YQ02). （2016YQ02）
