Performance evaluations of load balancing in industrial power grids using vehicle to grid technology

The presented paper evaluates measurement results and reports about further development from the vehicle to grid system presented in [1] and [12]. It uses a number of mass-production electric vehicles in sink and source mode to balance the load of an industrial plant by cutting off its peak loads. The actual load is detected and the balancing power is calculated by a predictive algorithm which keeps the total load below the setpoint. Analysis show that the goal of peak load shaving is reached using the presented control strategy. Although mean availability of balancing performance is lower than assumed. Improvements were made, reducing DC link ripple current by passively low pass filtering. After evaluating proportion of stations' active to passive times, a standby mode was implemented improving efficiency of overall system.