Ma Dazhong, Liu Menglin, Zhang Huaguang, Wang Rui, Xie Xiangpeng
IEEE Trans Cybern. 2022 Dec;52(12):13001-13011. doi: 10.1109/TCYB.2021.3095959. Epub 2022 Nov 18.
The microgrid with the high proportion of renewable sources has become the trend of the future. However, the negative features, such as renewable energy perturbation, nonlinear counterpart, and so on, are prone to causing the low-power quality of the ac microgrid. To deal with these problems, this article proposes an event-triggered consensus control approach. First, the nonlinear state-space function regarding the ac microgrid is built, which is further transformed into the standard linear multiagent model by using the singular perturbation method. It provides indispensable preprocessing for the direct application of advanced linear control approaches. Then, based on this standard linear multiagent model, the secondary consensus approach with the leader is designed to compensate for the output voltage deviation and achieve accurate power sharing. In order to decrease the communication among various distributed generators, the event-triggered communication method is further proposed. Meanwhile, the Zeno behavior is avoided through the theoretical proof. Finally, simulation results are presented to demonstrate the effectiveness of the proposed approach.
高比例可再生能源的微电网已成为未来的发展趋势。然而，诸如可再生能源扰动、非线性特性等负面特征容易导致交流微电网的电能质量低下。为解决这些问题，本文提出一种事件触发一致性控制方法。首先，建立关于交流微电网的非线性状态空间函数，并利用奇异摄动法将其进一步转化为标准线性多智能体模型。这为先进线性控制方法的直接应用提供了不可或缺的预处理。然后，基于该标准线性多智能体模型，设计带领导者的二次一致性方法，以补偿输出电压偏差并实现精确的功率分配。为减少各分布式发电机之间的通信，进一步提出事件触发通信方法。同时，通过理论证明避免了芝诺行为。最后，给出仿真结果以证明所提方法的有效性。
