Load Frequency Control Based on Equivalent-input-disturbance Method for Isolated Small Hybrid Power System

Chunsheng Wang, Jiamin Li, Yukun Hu, Xin Zhang, L. Varga
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引用次数: 0

Abstract

In any isolated small power system employing a mix of renewable energy (RE) technology and legacy technology, frequency deviation is inevitable due to RE fluctuations and load demand variations. Therefore, an appropriate frequency control scheme is essential. This paper presents an Equivalent-Input-Disturbance (EID) control for load frequency control of isolated small hybrid renewable energy power system. EID method is applied to regulate the output power of the diesel generator and electric vehicle (EV) to maintain the power balance and ultimately maintain the frequency within normal range. Simulation studies show that this strategy has higher flexibility and control performance than the traditional PI method.
基于等效输入扰动法的隔离型小型混合电力系统负荷频率控制
在任何采用可再生能源技术和传统技术混合的孤立小型电力系统中,由于可再生能源的波动和负载需求的变化,频率偏差是不可避免的。因此,适当的频率控制方案是必不可少的。提出了一种适用于隔离型小型混合可再生能源电力系统负荷频率控制的等效输入扰动控制方法。采用EID方法调节柴油发电机和电动汽车的输出功率,保持功率平衡,最终使频率保持在正常范围内。仿真研究表明,该策略比传统的PI方法具有更高的灵活性和控制性能。
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