Integrated Energy System Operation Optimization Considering Supply-side Flexibility

This paper studies the supply side flexibility of the electricity-heat coordinated integrated energy system during optimal operation. First, the multidimensional modeling of electricity-heat coordinated integrated energy system is studied, and the flexibility model of heat equipment is discussed. Then, the electricity-heat integrated energy system operation optimization model is proposed, with the cost of power generators, heat units and energy-loss penalty considered. Finally, a cast study is applied where the electricity-heat combined system is designed and several different scenarios are compared. The validity of the IES optimal dispatch model of the considering the energy storage characteristics of the heat grid is verified. By comparing the dispatching results with and without considering the flexibility of heat grid energy storage in the integrated energy system, it shows that the improvement of flexibility have an impact on system economy and renewable energy performance.