基于高通濾波器的SVC對風電系統的霍普夫分岔控制
袁義桃1，康積濤1，何龍2
(1 西南交通大學 電氣工程學院，四川 成都 610031；
2 四川大學 電氣信息學院，四川 成都 610065)
摘 要：運用延拓法追蹤以雙饋感應風電機(DFIG)為代表的風電系統的平衡解流形，并基于分岔理論，分析平衡解流形的分岔點。提出了一種基于高通濾波器(washout filter)技術的SVC模型，對風電系統發生的霍普夫(Hopf)分岔進行分岔控制，改變與系統分岔相關的雅可比矩陣特征值，不但消除了Hopf分岔點，還提高了電壓幅值，擴大了電壓穩定裕度。仿真結果和時域仿真驗證了提出的方法是正確可行的。
關鍵詞：風電系統；電壓穩定；高通濾波器控制的SVC；Hopf分岔
中圖分類號：TM714.3；TN713 文獻標識碼：A 文章編號：1007-3175(2014)03-0008-05
Hopf Bifurcation Control of Wind Power System Based on Washout Filter with Static Var Compensator
YUAN Yi-tao1, KANG Ji-tao1, HE Long2
（1 School of Electric Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2 School of Electric Information, Sichuan University, Chengdu 610061, China）
Abstract: The continuation method was used to track the balance flow of wind power system connected by a doubly fed induction generator (DFIG), also this paper analyzed the bifurcation points based on the bifurcation theory. A novel static var compensator (SVC) model based on washout filter technology was proposed to control Hopf bifurcation happened in wind power system and to alter the Jacobian matrix’s eigenvalue related to the system bifurcation, which not only eliminates the Hopf bifurcation points, but also enhances the voltage amplitude and extends the voltage stability margin. The simulation results and time domain simulation verify that the new approach is feasible.
Key words: wind power system; voltage stability; static var compensator controlled by washout filter; Hopf bifurcation
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