Electric Power ›› 2023, Vol. 56 ›› Issue (10): 1-10.DOI: 10.11930/j.issn.1004-9649.202210024

• Key Technology of Hydrogen Energy and Its System Integration Control for the New Power System • Previous Articles     Next Articles

Low Carbon Economic Dispatch of Gas Electricity Coupling System Considering Carbon Capture and Hydrogen Mixing in Gas Grid

Yuxuan YANG1(), Dongliang GAO1(), Yiming CHEN1, Buxiang ZHOU2, Yang CHEN2, Tianlei ZANG2()   

  1. 1. State Grid Sichuan Electric Power Co., Ltd., Chengdu 610041, China
    2. School of Electrical Engineering, Sichuan University, Chengdu 610065, China
  • Received:2022-10-15 Accepted:2023-01-13 Online:2023-10-23 Published:2023-10-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (The Human-Information-Energy Coupled Urban Energy Internet Catastrophe Analysis and Its Dynamic Early Warning, No.51907097) and State Grid Sichuan Electric Power Company Science and Technology Project (Optimal Regulation and Risk Control Technology for Integrated Energy System to Deal with Cyber Physical System Failures, No.52199620000M).

Abstract:

For the problem of low-carbon dispatch of gas-power integrated energy system, gas-grid hydrogen blending, carbon capture and electricity-to-gas conversion are all effective technical means. Meanwhile, carbon trading mechanism is also an effective economic means to control carbon emission. Therefore, this paper constructs a carbon capture plant model with liquid-rich and liquid-poor tanks, combined with an electric-to-methane technology model to flexibly recover and utilize CO2 in the system. Secondly, a gas-grid hydrogen blending technology model is used to improve energy efficiency, while considering the nodal calorific value change constraint during gas-grid hydrogen blending. Then the sum of incentive carbon trading cost and operation cost is used as the objective function. Finally, an arithmetic test is carried out based on the improved Belgian 20-node natural gas system and IEEE 39-node power system models. The results verify that the integrated consideration of carbon capture, gas network hydrogen blending and incentive carbon trading mechanism can improve the low carbon economic dispatch of the system. The carbon price and incentive factor can be adjusted flexibly to regulate the system carbon emission level.

Key words: liquid storage carbon capture, mixed hydrogen in gas network, electricity to gas, low carbon economic dispatch