Shan Yinghao, Pan Anqi, Liu Huashan
College of Information Science and Technology, Donghua University, Shanghai 201620, China; Engineering Research Center of Digitized Textile and Apparel Technology, Ministry of Education, Donghua University, Shanghai 201620, China.
College of Information Science and Technology, Donghua University, Shanghai 201620, China; Engineering Research Center of Digitized Textile and Apparel Technology, Ministry of Education, Donghua University, Shanghai 201620, China.
ISA Trans. 2022 Aug;127:216-228. doi: 10.1016/j.isatra.2022.02.039. Epub 2022 Mar 2.
In microgrid hierarchical control, primary control to stabilize system and secondary control to eliminate frequency/voltage deviations are both necessary for islanded microgrids. In this paper, a switching event-triggered (SET) resilient control scheme for microgrid primary and secondary levels has been proposed. First, droop control and model predictive control (MPC) are used for power sharing and driving signal generation respectively on primary level. An SET control method to trigger different MPC cost functions is proposed to balance output voltage quality and switching frequency. Then, distributed consensus and pinning control based method is used on secondary level. An SET mechanism to dynamically adjust secondary ratios to coordinate the transient deviation and response speed is proposed. Next, to deal with severe accidents, a resilient control scheme integrating primary and secondary levels is designed to maintain the system sound operation and improve the system immunity. Finally, the effectiveness of the proposed control scheme has been demonstrated by simulation with comprehensive scenarios.
在微电网分层控制中，对于孤岛微电网而言，稳定系统的一次控制和消除频率/电压偏差的二次控制都是必要的。本文提出了一种用于微电网一次和二次层级的开关事件触发（SET）弹性控制方案。首先，下垂控制和模型预测控制（MPC）分别用于一次层级的功率分配和驱动信号生成。提出了一种触发不同MPC成本函数的SET控制方法，以平衡输出电压质量和开关频率。然后，在二次层级采用基于分布式一致性和牵制控制的方法。提出了一种动态调整二次比例以协调暂态偏差和响应速度的SET机制。接下来，为应对严重事故，设计了一种集成一次和二次层级的弹性控制方案，以维持系统的良好运行并提高系统抗扰性。最后，通过综合场景的仿真验证了所提控制方案的有效性。
