Power flow control strategy for prosumer based EV charging scheme to minimize charging impact on distribution network

In recent years, much focus has been given on the deployment of Electric Vehicles (EVs) due to energy crisis and environmental issues for sustainable development. For wide-spread application of EV technology, the power system charging infrastructure should be capable of handling increased load demand of electric vehicles. The charging load characteristics offered by electric vehicles are very difficult to predict. However, an uncoordinated and high rate of charging causes large power demand, which is a challenging task to supply from the grid during peak load conditions. Such excess power demand on the distribution network due to EV charging needs to be addressed. This research paper proposed power flow control strategy for prosumer based EV charging scheme to minimize charging impact on distribution network. The Energy Monitoring Unit (EMU) and Energy Monitoring and Control Unit (EMUC), continuously monitor and control the power flow in the distribution network and maintain total load on the distribution network below the sanction load limit. So that complete distribution network acts as a constant load on the AC grid. The paper also discussed the recent work done in the area of charging schemes to address imbalance of power, voltage fluctuation, power loss, overloading of system components and harmonics on distribution networks. Power flow control strategy effectively manages 95 % of excess power demand on the distribution network due to EV charging above the sanction limit and only 5 % EV excess demand is managed by Diesel Generator (DG) set during emergency conditions. The proposed EV charging scheme with active participation of prosumer to balance the power flow and to minimize EV charging demand at peak load is discussed with HOMER Pro software.