A Microgrid Scheduling Method with Diesel Dynamometer System Integration and Demand Response Considering Flexibility

Diesel-electric dynamometer is one of the most advanced dynamometers on the market, however, there is a huge waste in the energy conversion process of diesel-electric dynamometers. By connecting the diesel dynamometer system to the microgrid as a distributed generator, the feedback of electric energy can be realized effectively, and the flexibility of regional power grid operation can be improved. In this paper, the economic dispatching of a microgrid integrated with the diesel dynamometer is investigated. The output models of grid-connected diesel engines, DR resources, and distributed power sources are proposed. Then a day-ahead bi-level optimization model is developed and the system flexibility is evaluated. Finally, the proposed model and method are validated in a microgrid containing diesel engines, wind turbines and transferable loads, proving that the proposed microgrid operation model can achieve flexibility and economy.