电力系统自动化2011，Vol.35Issue(17)：10-13,4.
背景参数的不确定性对参数识别的影响
Influence of Background Parameter Uncertainty on Parameter Identification
摘要
Abstract
Except for two or three target parameters,all the remaining parameters（hereinafter referred to as background parameters） are usually assumed to be accurate in parameter identification.However,both models and operating conditions are highly random and uncertain in nature,typical or experiential values have to be used for the background parameters.It is also difficult to assign reasonable value-intervals for some background parameters.Errors of the background parameters will affect the identification errors of the target parameters,or even invalidate the identification.Based on stability mechanisms,the influence of background parameter uncertainty on parameter identification by using the difference index and its sensitivity analysis are investigated.Simulation results show that background parameter error may lead to serious error for identification or even no solution.This reveals the potentially very high risks for parameter identification.关键词
参数识别/背景参数/系统动态的机理差异度/稳定裕度/灵敏度分析Key words
parameter identification/background parameter/mechanism-based difference index of system dynamics/stability margin/sensitivity analysis分类
信息技术与安全科学引用本文复制引用
郝丽丽,薛禹胜,张广明,邵如平..背景参数的不确定性对参数识别的影响[J].电力系统自动化,2011,35(17):10-13,4.基金项目
国家自然科学基金资助项目 （）
国家科技支撑计划资助项目 （）
国家电网公司科技项目（SGKJ[2008]＆[2009]）~~ （）
