Resilience-oriented control for cyber-physical hybrid energy storage systems using a semi-consensus scheme : design and practice

Abstract

Hybrid energy storage systems (HESSs) can simultaneously harness the advantages of batteries and supercapacitors (SCs) in various loading situations. Coupled with communication links, cyber-physical HESSs (CPHSs) would be threatened by unexpected cyber attacks that may cause damage to electrical devices and even collapse the entire system. To overcome the adverse impacts of attacks, a resilience control scheme is proposed in this paper. The proposed scheme provides a %standardized unified form integrated with adaptive laws to guarantee multi-functional HESS operations, i.e., DC bus voltage restoration, transient current allocation between batteries and SCs, proportional battery current sharing and battery SOC (state of charge) balancing, under cyber attacks. The proposed resilience control allows to establish communication links only among batteries, whereas SCs are free of data exchange process, which can save system capitial costs. The stability of the proposed control is proved by Lyapunov stability theory. The effectiveness and feasibility of the proposed approach is validated on a hardware-in-the-loop (HIL) testing platform.