电力系统自动化2016，Vol.40Issue(8)：22-28,50,8.DOI:10.7500/AEPS20150529016
基于集合论估计的电网状态辨识（四）离群点识别
Power System State Identification Based on Set Theory Estimation Part Four Outlier Identification
摘要
Abstract
The concepts of inconsistent outliers and consistent outliers based on the characterization analysis are proposed from the perspective of consistency.Besides,it is pointed out that the possible outlier sets should contain inconsistent outliers and consistent outliers.In addition,a two-step method for state identification is put forward.The method firstly identifies all possible inconsistent outliers and then classifies the possible consistent outliers.For inconsistent outliers,a hierarchical search algorithm is proposed according to the multi-level structure of power system.By localizing the search procedure,the search space is reduced and the efficiency of the search algorithm is improved significantly.For consistent outliers,a sensitivity analysis method is proposed to find the outliers which have the most impact on the result sets.By sensitivity analysis,the combination explosion problem of searching all the active measurements is avoided.关键词
状态估计/集合论估计/不相容离群点/相容离群点Key words
state estimation/set theory estimation/inconsistent outlier/consistent outlier引用本文复制引用
周宁慧,王彬,王治华,董树锋,何光宇..基于集合论估计的电网状态辨识（四）离群点识别[J].电力系统自动化,2016,40(8):22-28,50,8.基金项目
国家自然科学基金资助项目(51207136)。This work is supported by National Science Foundation of China(No.51207136) （51207136）
