Abstract
Electric vehicles are expected to be one of hopeful leveling loads for the difference between the peak time and the off-peak time of electric load. From a global point of view, increasing environmental concerns make us recognize the necessity of replacement of conventional gasoline car by electric vehicle. Due to the problems of the efficiency and the life time of the battery, it will take time to use electric vehicles in general. Electric vehicles are used only in the specialized small fields. Nowadays, automobile makers cooperate to invent advanced batteries for electric vehicle. Thus it is the time to develop appropriate infrastructure standards and technologies to make electric vehicles attractive to the consumers.
In this paper, we investigate closely the impact of electric vehicle on the electric demands, by assuming the analytical models of EV consumption. The charging characteristics cf the battery, the running performance and the practical driving distance of each type of car are used for this analysis. According to the scenario analysis, the simulations are clearly presented the impact of EV introduction using the practical day load duration curve in Tokyo cosmopolitan area.
The authors conclude that the electric vehicle is effective for load leveling under some sort of market regulations. If there is no regulation in the EV market, power shortage will occur on both nighttime and daytime because of the concentration of the nighttime charge and the quick charge.
