Abstract:
This thesis introduces a smart grid energy management system for standalone renewable energy system. The system consists of solar simulator, battery and backup source that can supply to electrical load continuously. The system will supply power to load at all time, the concept is that, when the battery power is down to the setting coordinates point, the backup source is automatically started to supply power to the system and battery. The backup source will be stop when the battery is full.
To development the system, simulation program HOMER is used. The designed system consists of PV Size 1.8 kWp, battery 18 kWh, PV Inverter 1 kW, Battery Inverter 2.2 kW, and simulation load. The real-time monitoring is developed for evaluation of the system performance.
The comparison of Simulation and the experiment found that the system is working as the design. From the output of the system, it can be seen that the Power consumption from 00:00 AM to 03:30 AM is from the battery about 600 W, 03:30 AM to 07:00 AM, the operation of the backup source can supply to load and charge the battery at the total load 1900 W. The backup source will run again at 07:30 PM to 11:30 PM due to periods of maximum load at 1 kW, because the power of battery was not enough. The period from 07:00 AM to 18:00 PM, PV supplies to load and charge the battery. From The results it can be seen that the combination of renewable energy system can work continuously as the design.