基于虚拟同步发电机双机并联系统的参数自调节优化控制策略

doi:10.19595/j.cnki.1000-6753.tces.L80459

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Abstract

There are the problems of active power oscillation and frequency fluctuation for dual-parallel virtual synchronous generators (VSGs) with the fixed moment of inertia and damping coefficient, therefore, an optimization control strategy of self-adjusting parameters is proposed in this paper. Firstly, a small signal model of the parallel VSG system is established, and the influence of moment of inertia and damping coefficient on output active power is analyzed. Secondly, the parameter optimization control for the self-adjusting inertia and damping coefficient is introduced according to the change rate and the deviation of rotor angular velocity within the restricted range of satisfying the dynamic and steady state performance of the system. Finally, the effectiveness of the proposed control method is verified by simulation results. This method can not only suppress the active power oscillation during the process of VSG connecting with AC bus and ensure the stable operation of the system, but also improve the frequency support ability.

Key words： Virtual synchronous generator dual-parallel system small-signal model active power output characteristics self-adjusting parameter optimization control

Received: 30 June 2018 Published: 10 January 2019

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TM464

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	Articles by authors
	Ren Biying
	Qiu Jiaojiao
	Liu Huan
	Sun Xiangdong

Cite this article:

Ren Biying,Qiu Jiaojiao,Liu Huan等. Optimization Control Strategy of Self-Adjusting Parameter Based on Dual-Parallel Virtual Synchronous Generators[J]. Transactions of China Electrotechnical Society, 2019, 34(1): 128-138.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80459 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I1/128

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