广东电力2018，Vol.31Issue(3)：49-54,6.DOI:10.3969/j.issn.1007-290X.2018.003.009
基于PMU的输电线路相参数在线抗差最小二乘辨识
Least Square Identification for Online Robust Estimation of Phase Parameters of Power Transmission Lines Based on PMU
摘要
Abstract
In allusion to difficulty in acquiring phase parameters of power transmission lines and problem of random noises in measured PMU data,this paper presents a new online least square identification method for phase parameters of lines.The method adopts the phase component method to realize the identification for the phase parameters only with multiple three-phase unbalanced measured data of PMU voltage and current at both ends of lines in normal operation.By establishing a Π typed equivalent model for three-phase parameters of lines,it obtains the identification method based on the Huber estima-tion method which can reduce the impacts of general random noises and bad data on identification results and realize robust estimation.Finally,simulation results show the effectiveness and anti-noise capability of the proposed method.关键词
PMU数据/在线参数辨识/相参数/三相不平衡/最小二乘Key words
PMU data/online parameter identification/phase parameter/three-phase unbalance/least square分类
信息技术与安全科学引用本文复制引用
孟德强,游宏宇,薛安成..基于PMU的输电线路相参数在线抗差最小二乘辨识[J].广东电力,2018,31(3):49-54,6.基金项目
国家自然科学基金项目(51627811) （51627811）
