【摘要】 “双碳”目标的提出与综合能源系统（integrated energy system, IES）的快速发展对能源系统碳排放流计算提出了更高要求。当前IES碳流算法主要针对单向耦合系统，耦合元件与各子网碳流计算模型不统一，因此无法计算环状耦合系统碳流。为了对环状IES碳排放流进行快速准确计算，提出了一种通用的综合能源系统统一碳流计算方法。该通用算法首先统一了多能耦合系统功率流的计算；其次根据碳流的性质与特点，统一了能源子网与耦合元件的碳流计算，进一步得到了综合能源系统的碳足迹分布。此外，鉴于碳流对潮流的依附关系，采用复数形式对潮流与碳流进行表示。将所提方法应用于单向耦合系统和环状耦合系统算例，结果表明所提方法的结果更符合实际、速度更快、适用范围更广。更多还原

【Abstract】 The calculation of the carbon emission flow of an integrated energy system(IES) has been put forward with higher requirements owing to the proposed "dual carbon" goals and the rapid development of IES. Current IES carbon flow algorithms mainly focus on unidirectional coupling systems, and the coupling element is not unified with the carbon flow calculation model of each subnetwork. Therefore, the carbon flow of the cyclic coupling system cannot be calculated. This study proposes a unified carbon flow calculation method for integrated energy systems for the fast and accurate calculation of carbon emission flows in circular IES. The general algorithm proposed first unifies the calculation of power flow in multi-energy coupled systems. Second, based on the properties and characteristics of carbon flow, the calculation models for the energy network and coupling elements are unified, allowing for the distribution of carbon footprint across the integrated energy system. In addition, considering the dependence of carbon flow on power flow, a complex form is used to represent power and carbon flows in this study. The algorithm was applied to both unidirectional and ring coupling systems, and the results demonstrated it to be more practical, faster, and more applicable.更多还原