The impact of quick charge on power quality of high-voltage grid

[摘要] With the continuous development of electric vehicles, a large number of electric vehicles have connected to the grid. This impacts the security and economic operation of power systems deeply. When large-scale electric vehicles are charging, it will bring the problem of electricity load growth and cause the peak-valley difference of power grid. The paper analyzes the impact of electric vehicles quick charge on power quality. According to Monte Carlo method, the daily load curve of quick charging mode in Beijing in 2030 is set up. Newton Raphson method and forward-backward substitution method are used to analyze the voltage deviation and power loss of each node in the typical power system.

[发布机构] Capital Normal University, Haidian District, Beijing; 100048, China^1

[效力级别] 电工学

[关键词] Charging modes;Continuous development;Daily load curves;Economic operations;Electricity load;High voltage grid;Substitution method;Voltage deviations