抑制次同步振荡的SVC非线性控制方法

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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 words： Subsynchronous oscillation static var compensator decoupling of the generator shaft model nonlinear control

Published: 03 March 2016

PACS:

TM712

Fund:国家高技术研究发展计划（863计划）（2011AA05A119）,国家电网公司大电网重大专项资助项目课题（SGCC-MPLG029-2012）和中央高校基本科研业务费专项基金（2012207020207）资助项目

Corresponding Authors: 岑炳成男,1990年生,硕士研究生,研究方向为电力系统运行与控制。E-mail: cbc_whu@126.com

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	Cen Bingcheng
	Liu Dichen
	Dong Feifei
	Liao Qingfen
	Tang Yuheng
	Ma Wenyuan

Cite this article:

Cen Bingcheng,Liu Dichen,Dong Feifei等. Nonlinear Control Method of Static Var Compensator for Damping Subsynchronous Oscillation[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 129-135.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I4/129

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