Control (management)

Engineering

Cyber-physical system

Aerospace engineering

Biology

Security domain

Control engineering

Computer security

Telecommunications network

Operating system

Computer science

Distributed generation

Distributed computing

Cyber-attack

Controller (irrigation)

Computer network

Thermodynamics

Physics

Renewable energy

Mathematics

Agronomy

Domain (mathematical analysis)

Mathematical analysis

Artificial intelligence

Resilience (materials science)

Situation awareness

Electrical engineering

IEEE Transactions on Smart Grid

Considering the high penetration of distributed energy resources (DERs), extensive communication networks are deemed necessary to realize the coordinated control of DERs in microgrids (MGs). The reliance on communication networks introduces potential cyber security issues into MGs. However, such attacks are difficult to be detected when a global situational awareness is lacking in distributed systems. In this paper, we analyze the impacts of cyber-attacks on communication links, local controllers, and master controller, which would drive MGs away from optimal operating points. We propose a cyber-attack resilient distributed control strategy in which each participant can detect and isolate corrupted links and controllers in a timely and economic fashion. The proposed control strategy is effective against time-varying attack signals and successive attacks while retaining the MG operational merits. The proposed control strategy is examined for different types of attacks. In this case, we consider various operating conditions and apply the time-domain PSCAD/EMTDC to the simulation and analyses of two MG systems.

A Cyber-Attack Resilient Distributed Control Strategy in Islanded Microgrids