Integrated Economic Operation of Isolated Hybrid Microgrids

In this research a cost-based droop scheme is introduced, to minimize the total active power generation cost in an islanded Hybrid AC-DC Microgrid (HMG) relying on an equal incremental cost concept. While the simplicity and decentralized character of the droop control are maintained, the proposed scheme is implemented by including the cost function in the ordinary droop control. Moreover, the droop is controlled to minimize the active power losses for both AC and DC microgrids simultaneously using the whale optimization algorithm. The algorithm is tested on IEEE-12 bus hybrid microgrids to demonstrate the effectiveness and capability of the cost-based droop schemes.