Stochastic Operation Scheduling of a Microgrid With Multi Connection Points Considering Risk Constraint in the presence of Responsive Loads

Nowadays optimal operation of micro grids is important. A micro grid is an energy system that provides consumers with electricity through renewable-based or traditional resources. In this paper, it is supposed that the micro grid is capable of being immediately separated from the main grid due to disturbance and connected to the adjacent micro grid to meet the demand through buying electric power from the adjacent operator. In addition to this, stochastic operation scheduling of power resources is proposed the objective function of which is to minimize operating cost. Also, outage few scenarios including main grid outage and the uncertainties associated with wind generation and load are considered. Then, we use a scenario reduction technique to reduce the number of scenarios. Considering risk constraint, the effect of different levels of risk on the operating cost and resources commitment is analyzed and compared in grid-connected mode. The case studies results clearly state the effect of demand response and energy storage on operating cost reduction especially in occurrence of upstream outage and unavailability of adjacent micro grid capacity or due to connection status.