Electric Power ›› 2024, Vol. 57 ›› Issue (8): 214-226.DOI: 10.11930/j.issn.1004-9649.202312011

• Integrated Energy System Optimization • Previous Articles     Next Articles

Multi-time Scale Optimal Scheduling of Integrated Energy System Coupling Power-to-Gas and Carbon Capture System

Hui WANG1,2(), Kerui ZHOU1(), Zuohui WU1, Zhichao ZOU1, Xin LI1,2()   

  1. 1. College of Electrical and New Energy, China Three Gorges University, Yichang 443002, China
    2. Hubei Provincial Engineering Research Center of Intelligent Energy Technology, China Three Gorges University, Yichang 443002, China
  • Received:2023-12-03 Accepted:2024-03-02 Online:2024-08-23 Published:2024-08-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No.52107107).

Abstract:

To improve the renewable energy consumption and low-carbon economic benefits of the integrated energy system (IES), this paper proposes a multi-time scale coordinated optimal scheduling model for IES that combines power-to-gas (P2G) and carbon capture system (CCS). Firstly, a coupling model of P2G and CCS based on a tiered carbon trading mechanism is established, and an electric-thermal-cooling IES is constructed using multiple energy conversion and storage devices. Secondly, based on the multi-time scale optimization scheduling strategy, an optimal scheduling model is established respectively for three stages including day-ahead, intra-day rolling, and real-time adjustment with energy purchasing costs, operation and maintenance cost, carbon trading cost, and wind and solar curtailment cost as objective function. Finally, a simulation was conducted using a case study of an industrial park in Sichuan. The results demonstrate that the proposed model effectively improves the low-carbon economic benefits, energy utilization efficiency, and system stability of the IES.

Key words: carbon capture, power-to-gas, multi-time scale, integrated energy system