An Enhanced Distributed State Feedback for Secondary Control in an Islanded Microgrid
نویسندگان
1 Electrical Engineering Department, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch Islamic Azad University, Tehran, Iran
2 Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran
3 Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran
4 Department of Electrical and Computer Engineering,Queen’s University, Kingston, Ontario, Canada
doi
10.22111/ieco.2022.41076.1403چکیده
This paper applies a new state feedback control to a distributed secondary voltage and frequency control in an islanded microgrid. The problem is focused on the output consensus of the multi-agent systems, which is converted to a first-order dynamic system. The inverter-based distributed generations play as agents in the proposed control strategy. It is assumed that the distributed generators communicate through a communication network modeled by a directed graph (digraph). The distributed output consensus is used to design the secondary controllers. Such innovative controllers synchronize distributed generators' output voltages and frequencies to their reference values by a novel state feedback approach. Compared to the existing consensus protocols, the proposed method provides a different innovative solution to the secondary voltage and frequency control of microgrids, which has a better response in case of communication failures. Finally, extensive and comparative simulations have been presented to verify the validity of the proposed control strategy and the system performance.
