RESEARCH ON LOW-CARBON OPERATION OF INTEGRATED ENERGY SYSTEMS CONSIDERING TWO-STAGE P2G-CCS COUPLING AND SOURCE-LOAD COORDINATION OPTIMIZATION

Deng Dan; Lyu You; Shi Yijun; Li Zeyang; Ji Zhanyang; Liu Jizhen

doi:10.19912/j.0254-0096.tynxb.2024-0927

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 390-402. DOI: 10.19912/j.0254-0096.tynxb.2024-0927

RESEARCH ON LOW-CARBON OPERATION OF INTEGRATED ENERGY SYSTEMS CONSIDERING TWO-STAGE P2G-CCS COUPLING AND SOURCE-LOAD COORDINATION OPTIMIZATION

Deng Dan^1,2, Lyu You^1,2, Shi Yijun², Li Zeyang², Ji Zhanyang^1,2, Liu Jizhen^1,2

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Abstract

To solve the collaborative optimization problem of source-side energy supply coupling conversion and load-side energy demand transfer substitution under various energy sources, this paper proposes a source-load collaborative optimal scheduling model for an electricity-heat-gas-hydrogen-storage system under a tiered carbon trading mechanism and multi-energy demand response conditions. Firstly, based on the energy flow model, a flexible response model is proposed on the source side, constructing a hydrogen-mixed combined heat and power unit model with an adjustable heat-to-power ratio, and utilizing a two-stage power-to-gas process for dual-layer energy optimization. Secondly, on the load side, considering the characteristics of flexible loads, a spatio-temporal two-dimensional multi-energy demand response model is established under a tiered carbon trading mechanism. Finally, by handling uncertainties using the Frank-SJC-Copula, renewable energy output and multi-energy load forecasting curves are obtained. A day-ahead scheduling model is established with the objective of minimizing the total operating cost of the system, and the feasibility of scheduling under multiple scenarios and multi-energy configurations is verified through case studies based on time-of-use electricity and gas prices. The results show that the proposed electricity-heat-gas-hydrogen-storage collaborative optimization model can effectively optimize the system’s low-carbon and economic performance and reduce wind and solar curtailment.

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integrated energy system / optimal scheduling / power-to-gas / demand response

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Deng Dan, Lyu You, Shi Yijun, Li Zeyang, Ji Zhanyang, Liu Jizhen. RESEARCH ON LOW-CARBON OPERATION OF INTEGRATED ENERGY SYSTEMS CONSIDERING TWO-STAGE P2G-CCS COUPLING AND SOURCE-LOAD COORDINATION OPTIMIZATION[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 390-402 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0927

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