基于Crowbar的双馈机组风电场等值模型与并网仿真分析

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Abstract The low voltage ride-through issue is an urgent problem for doubly-fed induction generator(DFIG) wind farm integration. Thus, a DFIG wind farm aggregation method based on the crowbar is proposed in this paper. Through analyzing the mechanism of DFIG during grid fault, the equation of DFIG rotor current is calculated. Activation of the crowbar can be determined by the DFIG rotor current, and then the wind generators can be aggregated into two equivalent models based on the condition that the crowbar is activated or not. Capacity-weighted method is used to calculate the parameters of each equivalent model. The DFIG wind farm two-machine model can be built. Simulation analysis is carried out to demonstrate that the proposed method can better reflect the changes of wind farm caused by the activation of crowbar of part of DFIGs, compared with a single generator aggregated model. The wind farm low voltage ride-through is enhanced using fast response reactive power compensator.

Key words： Doubly-fed induction generator wind farm integration low voltage ride-through Crowbar wind farm two-machine model

Received: 27 March 2014 Published: 13 April 2015

PACS:

TM743

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	Articles by authors
	Wang Zhenshu
	Liu Yan
	Lei Ming
	Bian Shaorun
	Shi Yunpeng

Cite this article:

Wang Zhenshu,Liu Yan,Lei Ming等. Doubly-Fed Induction Generator Wind Farm Aggregated Model Based on Crowbar and Integration Simulation Analysis[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 44-51.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I4/44

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