电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2009年
21期
7-11,18
,共6页
非均匀时滞%结构奇异值%扫频法%时滞极限%线性分式变换
非均勻時滯%結構奇異值%掃頻法%時滯極限%線性分式變換
비균균시체%결구기이치%소빈법%시체겁한%선성분식변환
incommensurate delays%structured singular value%frequency-sweeping test%delay margin%linear fractional transformation
用具有结构复值不确定性的反馈系统描述线性时不变非均匀时滞系统,用μ的D-scaled上界、线性分式变换和扫频法求解非均匀时滞系统在时滞空间中的稳定域,提出μ分析框架下判断单时滞系统稳定的充要条件和多时滞系统稳定的充分条件.该方法具有保守性小、计算简单的优点,单时滞、多时滞和含非均匀通信时滞的电力系统稳定器(PSS)系统算例验证了其有效性.
用具有結構複值不確定性的反饋繫統描述線性時不變非均勻時滯繫統,用μ的D-scaled上界、線性分式變換和掃頻法求解非均勻時滯繫統在時滯空間中的穩定域,提齣μ分析框架下判斷單時滯繫統穩定的充要條件和多時滯繫統穩定的充分條件.該方法具有保守性小、計算簡單的優點,單時滯、多時滯和含非均勻通信時滯的電力繫統穩定器(PSS)繫統算例驗證瞭其有效性.
용구유결구복치불학정성적반궤계통묘술선성시불변비균균시체계통,용μ적D-scaled상계、선성분식변환화소빈법구해비균균시체계통재시체공간중적은정역,제출μ분석광가하판단단시체계통은정적충요조건화다시체계통은정적충분조건.해방법구유보수성소、계산간단적우점,단시체、다시체화함비균균통신시체적전력계통은정기(PSS)계통산례험증료기유효성.
Structured uncertainty with repeated complex scalars is proposed to describe the linear time-invariant systems with incommensurate delays.By means of the D-scaled upper bound,linear fractional transformation and frequency-sweeping test,stability regions in delay space are found.Based on theorem,necessary and sufficient conditions for the single delay system and less conservative sufficient conditions for systems with multiple incommensurate delays are provided.Simulation results of the tests and the power system stabilizer (PSS) system with incommensurate communication delays are reported to validate the methodology.
