基于高通濾波器的SVC對風電系統(tǒng)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(tǒng)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(tǒng)發(fā)生的霍普夫(Hopf)分岔進行分岔控制，改變與系統(tǒng)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(wěn)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(tǒng)；電壓穩(wěn)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
參考文獻
[1] Lerm A A P，Canizares C A, Silva A Se. Multiparameter Bifurcation Analysis of the South Brazilian Power System[J].IEEE Transactions on Power Systems，2003，18(2)：737-746.
[2] 馬幼捷，李小雙，周雪松，等．基于高通濾波器技術的電力系統(tǒng)霍普分岔控制[J].電網(wǎng)技術，2011，35(7)：76-81.
[3] Saad M S, Hassouneh M A, Abed E H, Edris A.Delaying Instability and Voltage Collapse in Power Systems using SVCs with Washout Filter-Aided Feedback[C]//Proceedings of the 2005 Digital Object Identifier American Control Conference, 2005, 6：4357-4362.
[4] 安諱春.非線性電力系統(tǒng)分岔控制的研究[D].沈陽：東北大學，2009.
[5] 彭志煒，胡國根，韓禎祥.基于分叉理論的電力系統(tǒng)電壓穩(wěn)定性分析[M].北京：中國電力出版社，2005.
[6] 趙晉泉，張伯明.連續(xù)潮流及其在電力系統(tǒng)靜態(tài)穩(wěn)定分析中的應用[J].電力系統(tǒng)自動化，2005，29(11)：91-96.
[7] 歐陽克儉.非線性動力系統(tǒng)的兩類分岔控制與混沌控制研究[D].長沙：湖南大學，2007.
[8] Srivastava K N, Srivastava S C, Kalar PK.Chaotic Oscillation in Power System Under Disburbance[C]//In IEE 2nd International Confer-ence on Advances in Power System Control,Operation and Management, 1993, 2：705-711.
[9] 李康.基于分岔理論的電力系統(tǒng)動態(tài)電壓穩(wěn)定性分析[D].成都：西南交通大學，2012.
[10] 顧偉.電力系統(tǒng)最優(yōu)分岔控制研究[D].南京：東南大學，2006.
[11] Elkington K, Knazkins V, Ghandhari M. On the Stability of Power Systems Containing Doubly Fed Generator Based Generation[J].Electric Power Systems Research, 2008, 78(9)：1477-1484.
[12] 李晶.變速恒頻雙饋風電機組動態(tài)模型及并網(wǎng)控制策略的研究[D].保定：華北電力大學，2005.
