Main advantage of electric vehicles (EV) compared to vehicles using fossil fuels is that does not produce air pollution. One day the existence of conventional vehicles will be replaced by EV. EV gets electricity supply from batteries. When using EV, one day the electrical energy in the batteries will run out. To recharge batteries, important components such as the Electrical Vehicle Charger (EVC) are needed. EVC provides the impact of voltage drop on the electric power system bus during the charging process. This voltage drop caused by the power supply from generators cannot meet the needs of loads, including chargers and batteries. To maintain the voltage so it remains at its safe operating voltage, the same bus with EVC is interconnected with renewable energy sources. Renewable energy sources used in this study are four types of wind turbine power plants. Safe range of operating voltage in this research from 95% to 105%. This paper analyzes the change in voltage in the electric power system when the wind power plant fills EVC. The research methods section uses several scenarios. The aim is to determine the effect of each type of wind power plant on the bus voltage and EVC. Simulation results show that scenario 3 has the best results than the other scenarios. In scenario 3, voltage in bus 12 is 98,08%, voltage in bus 13 is 98,66%, and voltage in bus 14 is 98,42%. All three buses in safe limits of the operating voltage.
