A strategy of load leveling by charging and discharging timecontrol of electric vehicles

摘要

By ZEV regulation of the California government in 1992, not onlynThe United States but also many developing countries are interested innreplacing gasoline cars by electric vehicles (EV). The electric utilitynexpects that the electric vehicle improves the difference between thendaytime and nighttime of recent demand as a new market of electric powerndemand. There are some reports that indicate on the danger whichngenerates the new peaks as the electric vehicles spread through thenmarket in charging start hour. As a countermeasure for avoiding thisnproblem, the authors propose that (1) the regional charging time shiftnmethod is introduced in the midnight charging time zone, and (2) inversenload flow by the discharge of the contract private use EV is carried outnas an energy shift in daytime, in this paper. Therefore, the actualnenergy consumption of the automobile was investigated, and future demandnis predicted by the mathematical consumption modeling. Especially, itnshows a strategy of optimum introduction on scheme and rate of electricnvehicle for effective energy shift. The authors point out the necessitynof market regulation for an electric vehicle