4.7 Article

Flexibility operation for integrated energy system considering hydrogen energy under inertia characteristics and stepped carbon trading mechanism

期刊

SUSTAINABLE CITIES AND SOCIETY
卷 98, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.scs.2023.104809

关键词

Integrated energy system; Flexibility performance; Hydrogen energy; Inertia characteristics; Carbon trading

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The integrated energy system is a practical solution to address energy supply pressure and promote energy efficiency globally. However, previous research has neglected to explore the flexibility potential of multi-energy coordination, resulting in a lack of flexibility in operational decisions. To address this issue, a techno-economic framework is urgently needed to improve the flexible performance of the integrated energy system operation. A proposed operational strategy aims to fully exploit the inertia characteristics of natural gas and heat energy transmission to enhance flexibility in energy use and balancing system energy. Additionally, a tiered carbon trading mechanism is simulated to effectively investigate and achieve low carbon emissions.
As a practical way to alleviate energy supply pressure and promote energy efficiency, the integrated energy system has attracted considerable attention worldwide. However, previous work on the integrated energy system does not adequately investigate the flexibility potential hidden in multi-energy coordination, resulting in a lack of flexibility in operational decisions. In this context, a techno-economic framework is urgently needed to take responsibility for improving the flexible performance of the integrated energy system operation. To do so, an operational strategy is developed to fully exploit the inertia characteristics that exist in the transmission of natural gas and heat energy to increase flexibility in energy use and balancing system energy. In the proposed strategy, flexible carbon trading is simulated at different growth rates and base prices through a tiered carbon trading mechanism to effectively investigate and achieve low carbon emissions. To address carbon emissions from an energy application perspective, a hydrogen-doped electric-to-gas process is established, providing new ideas for a low-carbon economy. Simulation results show that the proposed method can improve the accommodation level of renewable energy and reduce carbon emissions, and make more detailed use of the transmission energy of the integrated energy system to achieve more flexible operation.

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