Optimal distributed control of renewable energy-based microgrid – an energy management approach

This article proposes an optimal control for renewable energy-based microgrid. The proposed microgrid is composed of the solar photovoltaic systems (SPV), battery energy storage system (BESS) at bus-1 which is then interconnected to another SPV with BESS system and with some intermittent loads. The power obtained from the SPV is operated with maximum power point tracking algorithm. The excess power will be delivered by the battery. The battery is operated in the bi-directional mode, i.e. charging and discharging mode depending upon the power level from SPV. The two systems are operated in a distributed control approach. The disadvantages in the centralised and decentralised control approach can be overcome by the distributed control and these sources are operated in an optimal power flow with a slide mode control. The proposed system has been executed on Matlab/Simulink platform and its results have been explored. Thus obtained results show the effectiveness of the proposed scheme.