静止无功发生器序阻抗建模及对次同步振荡影响因素的分析

doi:10.19595/j.cnki.1000-6753.tces.190998

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Abstract Static Var generator (SVG) affects subsynchronous oscillation (SSO) characteristics of wind farm connected to grid. In this paper, the influence of SVG on the SSO characteristics was researched by impedance-based analysis method for gird-connected full-converter direct-drive wind farm. Firstly, the positive-sequence and negative-sequence impedance model were established, and the influence of SVG on the SSO characteristics of the system was revealed based on the stability criterion of multi-terminal impedance. The influence of control mode of SVG on SSO characteristics was researched combining with impedance-based stability criterion. Then, the dominant factors of the SVG control parameters affecting the SSO characteristics were identified based on the impedance sensitivity analysis method, and the adjustment scheme with SSO suppression based on the control optimization of SVG were proposed. Correctness and validity of the analysis were verified respectively with simulation.

Key words： Direct-drive wind generator static var generator (SVG) subsynchronous oscillation (SSO) impedance analysis

Received: 10 September 2019

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TM712

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	Articles by authors
	Hu Peng
	Ai Xin
	Xiao Shiwu
	Zhang Mingyuan
	Yu Yongjun

Cite this article:

Hu Peng,Ai Xin,Xiao Shiwu等. Sequence Impedance of Static Var Generator and Analysis of Influencing Factors on Subsynchronous Oscillation[J]. Transactions of China Electrotechnical Society, 2020, 35(17): 3703-3713.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190998 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I17/3703

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