Efficient Micro-grid connected Solar, Wind, Mini-Gas-turbine, Diesel Generator and Battery Storage Integrated Electrical Vehicle Charging Station with variable capacity
Micro-grid is connected with various energy resources, including wind, solar, micro gas turbine, energy storage system, and raw power form grid. This paper proposes an efficient integrated system to deliver the long term power demand with scheduled in the microgrid. The microgrid is supplying to the electric vehicle charging station works like vehicle to grid interface, which will control the charging time and charging rate. The proposed system should be a properly balanced charging station for flexible load and power generating systems. A variable-capacity plan using integrated microgrid is implemented with four different sources of energy. In the current scenario, the general electric Vehicle charging station needs to charge different cars at a different current rate based on their battery and charging system. Based on the charging rat, the cost of the charging should be collected from the car owner. For the same, this paper proposes an efficient plan for charging and generation units to use the maximum renewable energy and optimal utilization of non-renewable energy. The proposed system calculated that the overall charging station variable operation cost is reduced by 30%. The expansion cost is taken more on wind energy systems, about 140%. Still, the result of the wind energy power generation is far better than the other renewable energy generation unit in the Geographical region of Chennai, Tamilnadu, India. The overall cost optimization obtained by our proposed model is 52% compared to the existing general non-renewable energy-based charging station.