Impact of PHEV loads on the dynamic performance of power system

Plug-in Hybrid Electric Vehicles (PHEVs) are likely to be used as an alternative to conventional vehicles due to environmental friendly, energy-wise and cost effective. The effects of large-scale PHEV integration need to be investigated before they are integrated into the existing grid. This paper analyses the impact of PHEV loads on the dynamic behaviour of a power system under both small and large disturbances. From the analysis, it can be concluded that the PHEV loads can reduce the damping of the system under certain operating conditions.