一种风力机虚拟惯量控制与传统发电机调速控制的协调方法

发布时间：2018-10-12 11:37

【摘要】：风力机虚拟惯量控制能够有效减小风电并网系统频率下降的幅值和速度,但也相应地减小了传统同步发电机调速器的控制输出,导致系统频率恢复时间变长,且可能导致系统频率的二次下跌。建立了风电并网系统的仿真模型,分析了虚拟惯量控制对于系统频率支撑作用的机理,基于负荷扰动过程的能量分析提出了一种风力机虚拟惯量控制与传统发电机调速控制的协调方法,将虚拟惯量控制辅助功率和风力机转速恢复所需消耗的功率补偿到传统发电机调速器的负荷参考中,从而提高系统频率的恢复速度,并可防止系统频率的二次下跌。理论分析表明了该补偿方法不会造成系统频率的过调节。仿真计算验证了所提方法的有效性。
[Abstract]:The virtual inertia control of wind turbine can effectively reduce the amplitude and speed of frequency decrease of wind power grid connected system, but it also reduces the control output of traditional synchronous generator governor, which results in the system frequency recovery time becoming longer. And may lead to a second drop in the frequency of the system. The simulation model of wind power grid-connected system is established, and the mechanism of virtual inertia control on the frequency support of the system is analyzed. Based on the energy analysis of load disturbance process, a coordinated method of wind turbine virtual inertia control and traditional generator speed regulation control is proposed. The virtual inertia control auxiliary power and the power consumed by the wind turbine speed recovery are compensated to the load reference of the traditional generator governor, thus increasing the recovery speed of the system frequency and preventing the secondary fall of the system frequency. Theoretical analysis shows that the compensation method does not cause over-regulation of the system frequency. Simulation results show that the proposed method is effective.
【作者单位】：舰船综合电力技术国防科技重点实验室(海军工程大学);西安交通大学电气工程学院;中国海洋石油工程股份有限公司;
【基金】：国家重点基础研究发展计划项目(973项目)(2012CB215103) 国家自然科学基金项目(51377167) 教育部新世纪优秀人才支持计划项目(NCET-11-0871)~~
【分类号】：TM315

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