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Reliability Modeling of Electric Vehicles and Its Impact on Distribution Network

The integration of high penetration electric vehicles (EVs) into a power grid challenges distribution system operations. This has increased the need to study the reliability of distribution networks integrated with EVs. By considering the spatial-temporal characteristics of the EVs, a dispatchable EV time distribution model, a spatial distribution model, a battery state of charge (SOC) model, and an output factor model of EVs are developed in this paper. Advanced dispatch strategies coordinated EVs and wind turbine generators(WTGs) are proposed for system reliability assessment under both normal and fault states. The sequential Monte Carlo simulation method is applied to evaluate distribution network reliability. By using the IEEE RBTS 6-Bus system, the proposed models and strategies are analyzed and verified. A numerical case study demonstrated that the EVs and WTGs coordinated dispatch is beneficial for improving the distribution network reliability.