Low-Carbon Economic Optimization Method for Electric-Gas-Hydrogen Coupled Parks Based on Integrated Energy Flow-Carbon Flow Tracin

Abstract

To address ambiguous carbon emission boundaries and accounting lags in multi-energy industrial parks, this paper proposes a low-carbon economic optimization method based on integrated electricity-gas-hydrogen energy-carbon flow tracking. A unified three-energy flow tracking matrix is constructed to reveal dynamic carbon transfer in electrolytic hydrogen production and hydrogen-blended combustion, enabling real-time high-resolution calculation of cross-system nodal carbon intensity. A dual-coupling mechanism of tiered green certificates and carbon trading is designed with quantitative allowance mapping and tiered reward-penalty pricing. A multi-device coordinated low-carbon operation model is built, incorporating external energy costs and dual market transaction expenses. Case results show that the proposed approach enables precise cross-period arbitrage under carbon-price dual signals, achieving a shift from end-of-pipe capture to dynamic source-side carbon reduction without increasing total operation costs.