Multi-period Generation Scheduling Optimization Model and Its Application

Generation scheduling depended on accurate boundary conditions. Before the actual implementation, optimization result of day-ahead schedule was needed to be rolling corrected by two periods of intraday scheduling and real-time scheduling. It was key problem to establish optimization models which adapt to different dispatch period and coordinate different period generation scheduling for to achieving the best optimization results. This paper first discussed coordination mode of different period generation scheduling; Then, the mathematical models were established for day-ahead scheduling, intraday scheduling and real-time scheduling; Day-ahead scheduling and intraday scheduling including SCUC and SCED, intraday scheduling including SCED, and optimization goals were the minimum total cost of generation. In addition to boundary conditions, the difference between day-ahead scheduling and intraday scheduling model was that the optimal range from all units into AGC units; In real-time operation stage, the optimized objective was the minimum deviation between real-time schedule and intraday schedule for AGC units. Through practical application in a provincial, it proves that the proposed model is correct and effective.