The Impact Of Electric Vehicles' Power Proportion On Power Quality In Different Supply Modes

Establish an integrated simulation platform of charging machine, grid topology and equivalent harmonics source and based on this content, explore the relationship between the total harmonic distortion (THD) of grid side and the proportion of electric vehicles' charging power in entire loads in order to get the mathematical curve. Afterwards, according to the actual daily load data and the statistical probability of the time when large-scale electric vehicles get access to the grid, acquire the trend of THD in the grid which is accessed to charging stations and set the maximum allowable value of the proportion of electric vehicles' charging power in grid on the basis of the above analysis.