Publication

On addressing the security and stability issues due to false data injection attacks in DC microgrids – An adaptive observer approach

Journal Article (2021)

Journal

IEEE Transactions on Power Electronics

Pages

2801-2814

Volume

37

Number

3

Doc link

http://dx.doi.org/10.1109/TPEL.2021.3114990

File

Download the digital copy of the doc pdf document

Authors

Projects associated

Abstract

This paper proposes an observer-based methodology to detect and mitigate false data injection attacks in collaborative DC microgrids. The ability of observers to effectively detect such attacks is complicated by the presence of unknown non-linear constant power loads. This work determines that, in the presence of unknown constant power loads, the considered attack detection and mitigation problem involves non linearities, locally unobservable states, unknown parameters, uncertainty and noise. Taking into account these limitations, a distributed non linear adaptive observer is proposed to overcome these limitations and solve the concerned observation problem. The necessary conditions for the stability of the distributed scheme are found out. Moreover, numerical simulations are performed and then validated in a real experimental prototype, where communication delay, uncertainty and noise are considered.

Categories

adaptive control, control nonlinearities, observability, power system control.

Author keywords

Cyber-attacks, DC microgrid, constant power loads, non-linear observer, cyber-physical systems, resilient controller, adaptive observer, distributed estimation

Scientific reference

A. Cecilia, S. Sahoo, T. Dragičević, R. Costa Castelló and F. Blaabjerg. On addressing the security and stability issues due to false data injection attacks in DC microgrids – An adaptive observer approach. IEEE Transactions on Power Electronics, 37(3): 2801-2814, 2021.