Charging of plug-in electric vehicles (PEVs), especially
as market penetration increases, is an important challenge for
today’s power systems. This paper presents a stochastic methodology
for smart charging of PEVs. All of the associated uncertainties
are taken into account in the proposed methodology. Moreover, a
comprehensive model for impact of charging/discharging strategies
on the battery pack degradation in the vehicle has been included.
The proposed approach is applied to a typical distribution network
that contains wind-based distributed generation (DG) units. A costbenefit
analysis is carried out to extract the benefits of Vehicle to
Grid (V2G) implementation in distribution network. The simulation
results show that the V2G implementation without considering
battery degradation is economical. However, when considering a
battery degradation cost, V2G implementation without wind generation
is not beneficial, while it is economical when considering
wind DG. Moreover, the smart charging is economical in all conditions
and also it reduces the battery degradation cost in comparison
with uncoordinated charging.