Abstract:
In order to solve the problem of collaborative low-carbon optimal scheduling of integrated energy system(IES) with multiple types of energy storage(MTES), a two-layer model of low-carbon economy of multiple types of energy storage-integrated energy system(MTES-IES) was developed. Moreover, by building the hydrogen energy hub to make full use of the heat energy lost in the process of hydrogen conversion, and the energy utilization efficiency of the whole system was increased by cascade utilization of energy. In the two-layer optimization model, the upper layer aims at the economic optimization of MTES system, and the lower layer realizes the optimal low-carbon economic operation of IES. The Karush-Kuhn-Tucher(KKT) condition was used to transform the lower model into the constraints of the upper model, and the large M method was used to linearize the problem. Three different scenarios were simulated and analyzed. Results show that the proposed MTES-IES two-layer model can reduce the operating cost of the system and realize the overall low-carbon operation of the system by coordinating and optimizing the operation and scheduling strategies of different subsystems.