Cyber-physical system attack and defense strategy of distribution network considering source load bidirectional of electric vehicle
Modern power system has developed into cyber-physical system(CPS),which is highly integrated between power network and information network.However,advanced information technology not only improves system performance,but also introduces new security risks.With the large-scale grid-connection of Electric Vehicle(EV)with mobile energy storage equipment,the absorption capacity of distribution network for new energy has been greatly improved.However,the low security and high accessibility of charging piles have further reduced the network security of distribution network.On this basis,a distributed energy management strategy based on consistency algorithm is firstly proposed in this paper,which considers the EV cluster as an energy storage device with source-charge bidirectional characteristics to achieve fully distributed economic scheduling.Considering denial of service attacks and new data integrity attacks for electric vehicles,a disturbance rejection control strategy combining privacy protection protocol and isolation mechanism is proposed to achieve effective energy management and economic operation of systems under network attacks.Finally,the effectiveness of the encryption mechanism and the feasibility of the control strategy are verified by simulation.
electric vehicledistributed algorithmconsistency algorithmsource-charge bidirectional characteristics
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