电力系统自动化2017，Vol.41Issue(16)：117-122,6.DOI:10.7500/AEPS20170220001
多时滞不确定电力系统的改进时滞依赖鲁棒稳定判据
Improved Robust Delay-dependent Stability Criteria for Power Systems with Multiple Time Delays and Uncertain Parameters
摘要
Abstract
Faced with time delay induced by signal transmission in modern power systems,an improved robust delay-dependent stability criterion is proposed for power systems with multiple time delays and uncertain parameters,where the multiple time delay coupling and uncertain parameters in the actual power system are taken into account.It is noted that the Wirtinger integral inequality used and some slack terms introduced will reduce the conservatism of the result,and these uncertain parameters can be handled by adopting some necessary slack terms and Schur complement.Finally,a typical second-order time-delay system,a single machine infinite-bus system and the WSCC 3 generator 9-bus are provided to verify the effectiveness of the criterion obtained by using the linear matrix inequality (LMI) control toolbox.And the robust time-delay margin of the power system can be obtained.Simulation results show that the obtained criterion can be applied for robust stability analysis for power systems with multiple time delays and uncertain parameters,and the conservatism could also be greatly reduced.关键词
时滞电力系统/多时滞/保守性/Wirtinger不等式Key words
time-delay power system/multiple time delays/conservatism/Wirtinger integral inequality引用本文复制引用
孙永辉,李宁,卫志农,孙国强,王义..多时滞不确定电力系统的改进时滞依赖鲁棒稳定判据[J].电力系统自动化,2017,41(16):117-122,6.基金项目
国家自然科学基金资助项目(61673161) （61673161）
江苏省自然科学基金资助项目(BK20161510) （BK20161510）
高等学校学科创新引智计划(“111”计划)资助项目(B14022).This work is supported by National Natural Science Foundation of China (No.61673161),Jiangsu Provincial Natural Science Foundation of China (No.BK20161510),and Program of Introducing Talents of Discipline to Universities ("111" Program) (No.B14022). （“111”计划）
