Abstract
大量风机采用电力电子变流器的方式并网，使得风机与系统解耦，不具有像同步机一样的调频能力。采用转子动能控制增加系统的惯性，控制转速释放转子中的旋转动能为电网频率提供动态支持。同时引入响应速度快、规模灵活、能量密度大的蓄电池储能系统，弥补转子动能控制的不足。利用蓄电池储能系统快速吐纳能量的能力，抑制频率波动，减小系统的稳态频率偏差，提高动态频率响应能力。最后，基于DIgSILENT/PowerFactory平台对该控制策略进行了仿真研究，验证了该策略的合理性和有效性。 A large number of wind turbines are connected into power grid by power electronic converter, making wind turbines and the grid decoupling, without the same frequency regulation capability as synchronous generators. In order to improve the frequency regulation capability of wind turbines, a frequency modulation strategy based on rotor kinetic energy control (RKC) and battery energy storage systems (BESS) is proposed. RKC can increase system’s inertia and release the rotational kinetic energy in rotors to provide dynamic support for the grid frequency. RKC frequency regulation capacity is restrained by wind speed. Therefore, BESSes with the ability to absorb and release energy quickly can be used to inhibit the frequency fluctuations, reduce system's steady-state frequency deviation and improve the dynamic frequency response. Finally, the control strategy is simulated based on DigSILENT/PowerFactory platform, which proves the rationality and effectiveness of the strategy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
