考虑热动态的综合能源系统碳排放流建模与分析

在电力系统低碳转型背景下，传统的源侧碳排放控制难以满足碳排放责任公平分摊需求，亟需对多能源网络进行碳排放流(即碳流)追踪，明确源网荷碳排放责任。基于此，提出了热网准动态碳流模型，并对综合能源系统碳流进行建模与分析。介绍了热网静态碳流的管道计算模型；从热损耗和热延时两方面对热网管道的动态特性进行描述；在此基础上，引入热网管道储能变量刻画2种情况下热动态特性对管道和节点碳流分布的影响；进一步地，提出了热电联产机组的碳势计算方法和储能设备各时刻平均碳势的计算方法，并总结了电、热网络碳流联合分析方法；通过算例分析了静态和准动态热网模型下综合能源系统的碳流分布结果，并考虑了负荷热惯性及机组碳势对碳流分布的影响。

Modelling and analysis of carbon emission flow for integrated energy system considering thermal dynamic

In the context of low-carbon transformation of power system, the traditional source-side carbon emission control can hardly meet the demand for fair sharing of carbon emission responsibility. There is an urgent need to track the carbon emission flow of multi-energy networks and clarify the source-grid-load carbon emission responsibility. On this basis, a quasi-dynamic carbon flow model of heat network is proposed, and the carbon flow of integrated energy system(IES) is modeled and analyzed. The pipeline calculation model of static carbon flow for heat network is introduced. Then, the dynamic characteristics of heat network pipelines are described in terms of heat loss and heat delay. On this basis, the impacts of thermal dynamic characteristics on the distribution of carbon flow in pipelines and nodes under two cases are carved by introducing pipeline energy storage variables. Furthermore, the calculation method of carbon potential for combined heat and power unit and the calculation method of average carbon potential of energy storage devices at each moment are both proposed, and the joint analysis method of carbon flow for power and heat networks is summarized. The carbon flow distribution results of IES under static and quasi-dynamic heat network models are analyzed through case study, and the effects of load thermal inertia and unit carbon potential on the carbon flow distribution are also considered.