Appropriate battery energy storage system for house-based in case of charging system for EV installation
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Abstract
This paper presents the analysis of the battery energy storage system (BESS) appropriating for a house-based on installation of a charging system for electric vehicle (EV). The charging system taps into both the Metropolitan Electricity Authority's (MEA) low-voltage power grid, and a rooftop solar photovoltaic system. By using data on the daily electrical energy demand (load profile), the total electrical energy consumption was 20.39 kWh/day, which was used to simulate and analyze an appropriate battery energy storage system by using the DIgSILENT PowerFactory program. In the case of installing a charging system for electric vehicles (electric vehicles: EV), the portable charge rate of an electric vehicle was 3.60 kW (current 16.00 A), which an average daily energy consumption of 37.20 kWh with an average daily residential electricity consumption of 20.39 kWh. All loads were connected to a 5.00 kWp rooftop solar power generation system and the MEA's low-voltage grid. Results of simulation and analysis found that the load use of rooftop solar generation system during daytime was 6.04 kWh, and battery energy storage system suitable for storing remaining energy from solar rooftop production was 18.52 kWh, which can reduce the average daily electrical energy consumption from 57.60 kWh down to 33.04 kWh.
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