An adaptive sliding‐mode resilient control strategy in smart grid under mixed attacks

Abstract

This paper is concerned with security problems for cyber-physical systems (CPSs) under dynamic load altering attacks (DLAA) and false data injection attacks (FDIA). The smart grid, as a typical CPS system, is taken as an example in this paper. Since the communication channel is vulnerable to FDIA and DLAA, the stability of the smart grid may be influenced. For enhancing resilience and stability of smart grids, first of all, the power system model including both DLAA and FDIA is introduced. Second, an adaptive sliding mode controller is proposed. The controller can ensure the reliable operation of the power system in the case of unknown attack information by using the adaptive mechanism online estimating the upper bound of attack signal to automatically eliminate the effect of mixed attacks. Finally, a power system with three generators and six buses is taken as an illustrative example, and simulation and experiment results obtained by using MATLAB and Hardware-in-time platform built by Sartsim verify the effectiveness of the proposed resilient defense strategy.

Reliable control strategy based on sliding mode observer against FDI attacks in smart grid

“…False data injection (FDI) attacks in power systems are presented in Liu et al [7], which demonstrate that an attacker can successfully inject arbitrary attack signals into state variables and the attack can bypass existing detection devices. More importantly, attackers can manipulate control input commands by sabotaging the communication channel, tampering with system measurement data through intrusion measurement devices [8]. In the classical state estimation and feedback control problem, the existence of malicious attacks makes the system performance index seriously drop, so elastic control algorithm is needed to restore the system performance [9].…”

Security SMC for Networked Fuzzy Singular Systems With Semi-Markov Switching Parameters

“…During the SMC design process, the attackers can launch the cyber-attacks to invade the information system to threaten the security of sliding dynamics, and then destroy the stable operation of such dynamics. Very recently, a review of literature has witnessed the development of the security SMC [53,55,[63][64][65][66].…”