Impact of charging a large number of electric vehicles on the power system voltage stability
نویسندگان
چکیده
In this paper, the impact of charging a large number of electric vehicles (EV) on the power system voltage stability is investigated on an example of a real power transmission system. First, the maximum load factors for different states in a selected part of the power system are determined using the continuation power flow (CPF) calculations and PV curves. The approach provides information about the active power limit value prior to the voltage collapse. Second, different daily load diagrams for the current load and the load expected in 2025 and 2030 together with the impact of charging 5 % and 10% of the electric vehicles in the analyzed region are constructed and voltage variations at 110 kV buses for different scenarios are analyzed. The results show that the foreseen future charging of a large number of EVs during the peak load intervals combined with the expected increase in power consumption can significantly affect the voltage profiles in the power transmission grid.
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