Risk analysis of cyber physical distribution system considering cyber attacks on v2g system

In recent years, with the continuous promotion of smart grid construction and the implementation of energy conservation and emission reduction policies, electric vehicle, as a green travel tool, has been vigorously promoted by the government. Disorderly charging of large-scale electric vehicles will aggravate the peak valley difference of the power system, overload the branch power flow and over limit the voltage. Vehicle to grid (V2G) system based on price based demand response technology can charge and discharge orderly according to real time price set by distribution system operator. Aiming at V2G system, this paper proposes a cyberattack, in which attacker can tamper with the day-ahead real time price information, thus malicious manipulation electric vehicle charging or discharging behavior, and ultimately destroy the safe and reliable operation of the power grid. Finally, an IEEE 33 bus example is built to analyze the impact of the this cyberattack on distribution network, the results verify easibility of the proposed model and providing the future model bases for risk assessment of cyber physical distribution system.