Real-time scheduling as an on-line optimization process must output dispatch results in real time. However

the calculation time required and the economy have a trade-off relationship. In response to a real-time scheduling problem

this paper proposes a real-time scheduling strategy considering the operation interval division of distributed generators (DGs) and batteries in the microgrid. Rolling scheduling models

including day-ahead scheduling and hours-ahead scheduling

are established

where the latter considers the future state-of-charge deviations. For the real-time scheduling

the output powers of the DGs are divided into two intervals based on the ability to track the day-ahead and hours-ahead schedules. The day-ahead and hours-ahead scheduling ensure the economy

whereas the real-time scheduling overcomes the time- consumption problem. Finally

a grid-connected microgrid example is studied

and the simulation results demonstrate the effectiveness of the proposed strategy in terms of economic and real-time requirements.