Interactive Model for Risk-Management of a Microgrid Cluster and the Distribution Network

摘要

This paper presents a risk-constrained scheme for the collaborative energy management of multiple microgrids in the distribution network. Microgrids are modelled as autonomous entities that aims at maximizing their expected profits, while alleviating the associated risk on profit volatility. Furthermore, a network loss alleviating scheme is included to coordinate the power exchanges between microgrids and between the microgrid cluster and the grid. Specifically, energy can be wheeled among microgrids in order to supply their deficits using the surplus of others, for mutual benefits. A scenario-based approach is incorporated in order to capture system intermittencies. Numerical studies ratify the advantages of the presented scheme in lessening the distribution power losses, voltage fluctuations and renewable energy curtailment remarkably, in comparison to the non-cooperative scheme wherein individual microgrids coordinate only with the utility. The approach further is beneficial in mitigating the risk associated with profit variation at the expense of a minimal curtailment in microgrid expected payoff.