电工技术学报  2016, Vol. 31 Issue (4): 129-135    DOI:
电力系统 |
抑制次同步振荡的SVC非线性控制方法
岑炳成1, 刘涤尘1, 董飞飞1, 廖清芬1, 唐昱恒1, 马文媛2
1. 武汉大学电气工程学院 武汉 430072;
2. 中国电力科学研究院 北京 100192
Nonlinear Control Method of Static Var Compensator for Damping Subsynchronous Oscillation
Cen Bingcheng1, Liu Dichen1, Dong Feifei1, Liao Qingfen1, Tang Yuheng1, Ma Wenyuan2
1. School of Electrical Engineering Wuhan University Wuhan 430072 China;
2. China Electric Power Research Institute Beijing 100192 China
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摘要 静止无功补偿器(SVC)是抑制次同步振荡(SSO)的有效措施之一。现有用于抑制SSO的SVC控制策略尚不能适应电力系统非线性的特点。因此,提出一种实用的SVC非线性控制器设计方法,首先对发电机轴系模式进行解耦,然后根据所抑制的效果选取其输出函数,经推导得出SVC的控制规律,并从数学上证明其控制规律的正确性。最后采用时域仿真验证了所提出的非线性控制器设计方法的有效性,能够比传统PI控制方法更有效地抑制SSO,更好地保护发电机的轴系安全。
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岑炳成
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关键词 次同步振荡静止无功补偿器轴系模式解耦非线性控制    
Abstract:Static var compensator (SVC) is one of the approaches recommended to suppress sub-synchronous oscillations (SSO). Existing control strategies of SVC for suppressing SSO generally fail to accommodate to the nonlinearity of power system. Thus, this paper proposes a practical nonlinear SVC controller design method. Firstly, the generator shaft model is decoupled. Secondly, a reasonable objective function is selected according to the damping effect, and then the theoretical derivation of the control strategy for SVC is proposed. The control scheme is verified mathematically, and the proposed nonlinear controller is verified through a time-domain simulation. Compared with traditional PI control schemes, the proposed method can achieve better suppression of SSO, maintaining the safety of generator shaft system.
Key wordsSubsynchronous oscillation    static var compensator    decoupling of the generator shaft model    nonlinear control   
     出版日期: 2016-03-03
PACS: TM712  
作者简介: 刘涤尘 男,1953年生,博士,教授,博士生导师,研究方向为电力系统分析与控制、电力系统规划等。E-mail: dcliu@whu.edu.cn
引用本文:   
岑炳成, 刘涤尘, 董飞飞, 廖清芬, 唐昱恒, 马文媛. 抑制次同步振荡的SVC非线性控制方法[J]. 电工技术学报, 2016, 31(4): 129-135. Cen Bingcheng, Liu Dichen, Dong Feifei, Liao Qingfen, Tang Yuheng, Ma Wenyuan. Nonlinear Control Method of Static Var Compensator for Damping Subsynchronous Oscillation. Transactions of China Electrotechnical Society, 2016, 31(4): 129-135.
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