Research on Distributed Coordination Control Method for Microgrid System Based on Finite-time Event-triggered Consensus Algorithm*

doi:10.23919/CJEE.2024.000053

Chinese Journal of Electrical Engineering ›› 2024, Vol. 10 ›› Issue (2): 103-115.doi: 10.23919/CJEE.2024.000053

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Research on Distributed Coordination Control Method for Microgrid System Based on Finite-time Event-triggered Consensus Algorithm^*

Lizhen Wu^1,2, Heng Yang¹, Jianping Wei¹, Wendong Jiang¹

1. College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. National Active Distribution Network Technology Research Center,Beijing Jiaotong University, Beijing 100044, China

Received:2023-09-02 Revised:2023-10-19 Accepted:2023-12-17 Online:2024-06-25 Published:2024-07-01
Contact: * E-mail: wulzlut@163.com
About author:Lizhen Wu received the M.S. degree in the Control Theory and Control Engineering from Lanzhou University of Technology, Gansu, China, in 2004, and the Ph.D. degree in Control Theory and Control Engineering from Lanzhou University of Technology in 2017, respectively. She is studying in power system and its automation in National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing, China, in 2015. Currently, she is an Associate Professor/Master Supervisor at College of Electrical and Information Engineering, Lanzhou University of Technology, where she teaches courses on power electronics, control theory and renewable energy systems. Her interests include distributed generation and microgrids, micro-energy grid coordination control, power quality control, artificial intelligence and data-driven theory for smart grid, networked control theory and its application.
Heng Yang received the B.Eng. degree in Automation from Shanghai University of Electric Power, Shanghai, China. He is currently a Master degree candidate at the Lanzhou University of Technology, Gansu, China, in 2022. His interests include coordination control of microgrid.
Jianping Wei received the B.Eng. degree in Electrical Engineering from Lanzhou University of Technology, Gansu, China. He is currently a Master degree candidate at the Lanzhou University of Technology, Gansu, China, in 2021. His interests include coordination control of distributed generation and micro-energy system.
Wendong Jiang received the B.Eng. degree in in Electrical Engineering from Lanzhou University of Technology, Gansu, China. He is currently working at State Grid Yinchuan Branch, Yinchuan, China, in 2023. His interests include distributed generation and microgrid coordination control.
Supported by:
*National Natural Science Foundation of China (62063016).

Abstract

Abstract: Microgrids are networked control systems with multiple distributed generators (DGs). Microgrids are associated with many problems, such as communication delays, high sampling rates, and frequent controller updates, which make it challenging to realize coordination control among the DGs. Therefore, finite-time consensus algorithms and event-triggered control methods are combined to propose a distributed coordination control method for microgrid systems. The DG in the microgrid system serves as an agent node in the control network, and a distributed secondary controller is designed using finite-time consensus algorithm, such that the frequency and voltage restoration control has a faster convergence time and better anti-interference performance. The event-triggered function was designed based on the state information of the agents. The controller exchanges the state information at the trigger instants. System stability is analyzed using the Lyapunov stability theory, and it is verified that the controller cannot exhibit the Zeno phenomenon in the event-triggered process. A simulation platform was developed in Matlab/Simulink to verify that the proposed control method can effectively reduce the frequency of controller updates during communication delays and the burden on the communication network.

Key words: Microgrid, event-triggered control, distributed secondary control, finite-time consensus algorithm, coordination control

Lizhen Wu, Heng Yang, Jianping Wei, Wendong Jiang. Research on Distributed Coordination Control Method for Microgrid System Based on Finite-time Event-triggered Consensus Algorithm^*[J]. Chinese Journal of Electrical Engineering, 2024, 10(2): 103-115.

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Research on Distributed Coordination Control Method for Microgrid System Based on Finite-time Event-triggered Consensus Algorithm^*

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