Monitoring of Power Allocation in Centralized Electric Vehicle Charging Spot System

Plug-in Hybrid Electric Vehicle and Electric Vehicle (PHEV/EV) are taking a greater share in the personal automobile market, their high penetration levels may bring potential challenges to electric utility especially at the distribution level. Thus, there is a need for a flexible charging management strategy to compromise the benefits of both PHEV/EVs owners and power grid side. There are many different management methods that depend on objective function and the constraints caused by the system. In this paper, the schema and dispatching schedule of centralized PHEV/EV charging spot network are analyzed. Also, we proposed and compared three power allocation strategies for centralized charging spot network. The first strategy aims to maximize state of charge (SoC) of vehicles at plug-out time, the rest methods are equalized allocation and prioritized allocation based on vehicles SoC. The simulation shows that each run of the optimized algorithms can produce good results.