Management of Charging Load of Electric Vehicles for Optimal Capacity Utilisation of Distribution Transformers

A de-centralised load management technique exploiting the flexibility in the charging of Electric Vehicles (EVs) is presented. Two regimes are assumed. The Controlled Charging Regime (CCR) between 16:30 hours and 06:00 hours next day Uncontrolled (UCR) same day. During CCR, EVs is coordinated controlled by means a wireless two-way communication link between EV Smart Charge Controllers (EVSCCs) at owners’ premises EV Load Controller (EVLC) local LV distribution substation. EVLC sorts the batteries in ascending order their states charge (SoC) sends command signals for to as many transformer could allow at that interval based on condition analysed the Distribution Transformer Monitor (DTM). real typical urban area distribution network Great Britain (GB) used case study. The technique applied area when its carrying future demand of the winter weekday year 2050. To achieve load management, decomposed into Non-EV load. is managed varying an optimisation objective function which maximises capacity utilisation subject operational constraints non-disruption daily trips owners. Results show that with proposed technique, networks could accommodate high uptake without compromising useful normal life expectancy transformers before need capacity reinforcement.