A COMMENT OF FLEXIBLE AC TRANSIMISSON SYSTEM BASED ON POWER SYSTEM STABILITY ANALYSIS AND CONTROL
He Ruiwen1,2,Cai Zexiang1
(1. South China University of Technology,Guangzhou510640,China)
(2. Guangdong University of Technology,Guangzhou510090,China)
Abstract: This paper gives a comment on modeling method、stability control and its strategy of FACTS.The latest studies and key problems on stability are presented.It is pointed out that internal FACTS system dynamics should be considered in power system dynamic analysis and design of control schemes.
Keywords: FACTS;stability;comment
动态相量法(dynamic phasors)是由Sanders S R、Mattavelli P及Stankovic A M等人在平均方法理论的基础上提出并发展的。对于时域中以Τ为周期的函数,在区间上可以表示为傅里叶级数的形式[17]:其中,Ws=2π/T,Xk(t),是一系列时变的傅里叶复系数,称之为动态相量。其第次系数,或称相量由平均运算得到:动态相量法基于频率分解的思想,希望以傅里叶级数中的极少量的系数来近似原始波形,它直接从时域模型得到动态相量模型,不改变时域模型的非线性,但由于对时域微分方程进行了平均运算,所以得到一种随时间缓慢变化的大信号模型。
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