Study On Strategy Of Electric Vehicle Integrating Into Distribution Grid

As the development of electric vehicle technology and the government's energetic support in its popularization as well as Grid corporation and all sectors of the society reinforce the constructions of electric charging facilities,electric vehicle technology has been widely used in many fields.In view of environmental pressure,electric cars have significant advantages of zero emission and low energy consumption.With its popularization in these fields,such as bus,official vehicle,taxi and private car,the number of electric vehicle is rapidly growing.However,with the quantity of electric vehicles increasing year by year,the charging load is increasing,and therefore its effect to power distribution grid gradually appears,mainly showed in power quality,load and optimal operation.If charging is left chaotic,the power distribution grid will face great pressure.In this article,by predicting the quantity of electric vehicles,on this basis,predicting the charging load and analyzing the impact that diverse scale of electric cars accessing power distribution grid,we can draw the following conclusion: the effect that small-scale numbers of electric cars accessing power distribution grid can be neglected;large-scale numbers of electric cars accessing during highly concentrated period of time will put high pressure on power distribution grid.Lead electric cars' accessing by introducing technical and economical methods will promote the power distribution grid's development.In the end,technically and economically,raise several suggestions on electric cars' accessing power distribution grid.