Abstract: Considering the influence of the uncertainty of wind output and load and the degree of fine modeling of temperature-controlled load rebound characteristics on the optimal dispatch of the Regional Integrated Energy System, a multi-time scale coordinated optimal scheduling strategy that takes into account the level of detail direct load control is proposed. The day-ahead dispatch adopts a simplified three-stage rebound direct load control model to solve the unit operation plan with the goal of optimal system operation economy; The intraday scheduling is based on the direct load control simulation at the level of detail to correct the day-ahead rebound load curve and solve the micro-source output plan; And the real-time scheduling refines the intraday simulation rebound load curve. sBaed on the model predictive control algorithm, the micro-source output is adjusted through feedback correction and rolling optimization so as to achieve the coordinated operation of multiple time scales. The case study results shows that the direct load control that takes into account of the level of detail under multiple time scales is more suitable for the actual system operation It can realize the precise control of unit output, verifying the feasibility and effectiveness of the proposed optimal scheduling strategy.