Frequency Response Improvement of PMSG Wind Turbines Using a Washout Filter
Frequency Response Improvement of PMSG Wind Turbines Using a Washout Filter
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DOI：
10.3390/en13184797
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发表时间：
2020-09
期刊：
影响因子：
3.2
通讯作者：
Parisa M. Shabestari;A. Mehrizi‐Sani
中科院分区：
文献类型：
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作者：
Parisa M. Shabestari;A. Mehrizi‐Sani
风力涡轮机等可再生能源与电网的高度集成降低了电力系统的惯性。为了改善低惯量系统的频率响应，可以使用虚拟惯量方法。这封信提出了一种控制方法，以减少频率瞬变和恢复频率到其标称值。风力涡轮机通常基于最大功率点跟踪（MPPT）曲线工作以获得最大功率。在这封信中，所提出的控制器使用非MPPT方法，在瞬变过程中留下用于频率调节的功率。此外，它使用基于冲洗滤波器的方法来消除频率中的稳态误差。PSCAD环境下的仿真结果验证了所提出的方法在负载变化的性能改善，通过比较它与MPPT和非MPPT方法。
High integration of renewable energy resources, such as wind turbines, to the power grid decreases the power system inertia. To improve the frequency response of a low-inertia system, virtual inertia approach can be used. This letter proposes a control method to decrease the frequency transients and restore frequency to its nominal value. A wind turbine usually works based on maximum power point tracking (MPPT) curves to achieve the maximum power. In this letter, the proposed controller uses a non-MPPT method to leave power for frequency regulation during transients. Moreover, it uses a washout filter-based method to remove the steady-state error in the frequency. Simulation results in the PSCAD environment validate the improved performance of the proposed method during load changes by comparing it with the MPPT and non-MPPT methods.