双馈风电机组参与持续调频的双向功率约束及其影响

doi:10.19595/j.cnki.1000-6753.tces.181806

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Abstract Wind turbines participating in frequency regulation is one of the means to solve the inadequate regulation capacity in high proportion renewable energy power system. The doubly fed induction generator (DFIG) can reserve part of power to obtain bidirectional frequency regulation capability through rotor over-speed. The available bidirectional regulation power of the wind turbine is limited by the rated speed. According to the elementary operation equation of the wind turbine, the expression of maximum regulation power of DFIG through rotor over-speed is deduced in this paper. It is pointed out that the available bidirectional regulation power of the wind turbine is constrained by the power reservation coefficient and the maximum regulation power. The influence of bidirectional power constraints is analyzed when wind turbines participate in continuous frequency regulation, and the adjustment coefficient area of the wind turbine is given. Based on 24-hour measured data of a wind farm, the level of wind turbines frequency regulation power that meets the adjustment coefficient is simulated and calculated during the course of the actual frequency variation. The influence of power reservation coefficient on frequency quality, frequency regulation power of the wind turbine and utilization of wind power is empirically analyzed. The results show that the effects of bidirectional power constraints must be considered when evaluating the effectiveness of wind turbines in continuous frequency regulation.

Key words： Frequency regulation doubly fed induction generator (DFIG) rotor over-speed power reservation coefficient adjustment coefficient

Received: 22 November 2018 Published: 05 May 2019

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TM614

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	Mu Gang
	Cai Tingting
	Yan Gangui
	Liu Hongbo
	Liu Sutong

Cite this article:

Mu Gang,Cai Tingting,Yan Gangui等. Bidirectional Power Constraints and Influence of Doubly Fed Induction Generator Participating in Continuous Frequency Regulation[J]. Transactions of China Electrotechnical Society, 2019, 34(8): 1750-1759.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181806 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I8/1750

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