Study on Group Control Charging System and Cluster Control Technology of Electric Vehicle

In recent years, China's electric vehicle scale is growing very rapid. Along with the integration of “Internet +” technology, the electric vehicle charging service has gradually changed from the construction of charging facilities to the improvement of charging infrastructure utilization efficiency. The charging device of the existing charging stations usually takes the one-to-one mode, that is one power unit with one charging terminal. However, this one-to-one mode cannot expand the charging power and allocation the power flexibly, which leads to the low charging infrastructure utilization rate, difficult in upgrading of charging equipment and improving user demand. The intensive design idea in traditional substation, switch station and other places has gained popularity and the promotion, if it could be applied to the field of electric vehicle charging, charging infrastructure benefits of efficiency, improving the user experience will be of great difference. In view of this, in this paper, a preliminary study of the electric vehicle charging group control system and cluster control technology is proposed, in which the overall design of group control system is firstly given, then the application scenario electric vehicle charging group control system is analyzed, and finally the cluster control technology is analyzed in detail. The research results can provide scheme support for the cluster control of widely connected charging facilities.