A Resilience-Oriented Centralised-to-Decentralised Framework for Networked Microgrids Management

TL;DR

This paper introduces a cyber-physical framework that transitions from centralized to decentralized control in microgrids, enhancing resilience against extreme events by maintaining power supply through cooperative communication and distributed control.

Contribution

It presents a novel resilience-oriented framework combining centralized and decentralized control with wireless communication for microgrid management during extreme events.

Findings

Framework effectively maintains power supply during simulated extreme events.

Distributed control reduces delays and improves response time.

Wireless controller-to-controller network enhances cyber resilience.

Abstract

This paper proposes a cyber-physical cooperative mitigation framework to enhance power systems resilience under extreme events, e.g., earthquakes and hurricanes. Extreme events can simultaneously damage the physical-layer electric power infrastructure and the cyber-layer communication facilities. Microgrid (MG) has been widely recognised as an effective physical-layer response to such events, however, the mitigation strategy in the cyber lay is yet to be fully investigated. Therefore, this paper proposes a resilience-oriented centralised-to-decentralised framework to maintain the power supply of critical loads such as hospitals, data centers, etc., under extreme events. For the resilient control, controller-to-controller (C2C) wireless network is utilised to form the emergency regional communication when centralised base station being compromised. Owing to the limited reliable bandwidth that reserved as a backup, the inevitable delays are dynamically minimised and used to guide the design of a discrete-time distributed control algorithm to maintain post-event power supply. The effectiveness of the cooperative cyber-physical mitigation framework is demonstrated through extensive simulations in MATLAB/Simulink.