电力系统自动化Issue(10)：61-65,5.DOI:10.7500/AEPS20130703006
基于最大测点正常率的线路参数增广状态估计方法
An Augmented State Estimation Method for Transmission Line Parameters Based on Maximum Normal Measurement Rate
摘要
Abstract
The errors of transmission line parameters will lead to inaccurate results of state estimation (SE) of the energy management system (EMS),thus affecting other advanced applications.The augmented state estimation (ASE) based on weighted least square is one of the representative estimation methods for transmission line parameters,but this method is prone to problems such as the measurement error.Based on the theory of uncertainty in measurement,a novel parameter estimation method,the ASE with the maximum normal measurement rate (MNMR) as its obj ective function,is proposed.Unlike the traditional ASE method,the proposed method is aimed at maximizing the normal measurement rate (NMR) based on the information of uncertainty in measurement,while taking into account the actual power flow and physical constraints of the power system. Furthermore, Gauss kernel density estimation and point estimation are used to extract the statistical characteristics of estimation results.Simulation results show that the proposed method has inherited the robust characteristic of MNMR robust SE,which is not easily affected by measurement error and can yield more rational parameters.关键词
线路参数/参数估计/增广状态估计/最大测点正常率/抗差状态估计/量测误差Key words
transmission line parameters/parameter estimation/augmented state estimation/maximum normal measurement rate/robust state estimation/measurement error引用本文复制引用
薛安成,张兆阳,张建民,常乃超,毕天姝..基于最大测点正常率的线路参数增广状态估计方法[J].电力系统自动化,2014,(10):61-65,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA050208) （863计划）
国家自然科学基金资助项目(51222703) （51222703）
中央高校基本科研业务费专项资金资助项目(12MS30)。 （12MS30）
