考虑火电机组参与绿证购买交易的含氢综合能源系统经济低碳调度策略

Economic and low-carbon dispatch strategy of a hydrogen-containing integrated energy system considering thermal power units participating in green certificate purchase trading

在“双碳”背景下,为提升能源消纳率、处理综合能源系统低碳供能问题,提出一种考虑火电机组参与绿证购买交易的含氢综合能源系统经济低碳调度策略。首先,针对光热电站和电制氢系统存在的耦合关系对综合能源系统进行建模。其次,建立以火电机组为绿证购买者的绿证交易模型。在碳交易的依托下,火电机组购买的绿证可以转化成部分碳配额。同时针对绿证交易价格,提出考虑绿证供需关系的绿证交易价格定价机制,基于价格的变化调整绿证购买量。最后,构建以含氢综合能源系统总运行成本最小为目标的调度模型。仿真分析表明,所提调度策略可以提升绿证购买需求和可再生能源消纳率,实现系统低碳经济运行的目标。

Given the background of"double carbon",and to promote the renewable energy consumption rate and settle the problem of low-carbon energy supply in the integrated energy system,an economical and low-carbon dispatch strategy for a hydrogen-containing integrated energy system for thermal power units to participate in the purchasing trade for a green certificate is proposed.First,the integrated energy system is modeled according to the coupling relationship between the CSP station and the electric hydrogen production system.Then,a green certificate trading model with thermal power units as its purchasers is established.With the support of carbon trading,the green certificates purchased by thermal power units can be converted into carbon quotas.Then,from the green certificate trading price,a pricing mechanism is proposed considering the green certificate’s relationship of supply and demand,and its purchasing volume is adjusted based on the price changing.Finally,an optimal dispatch model aiming at minimizing the total operating cost of the hydrogen-containing integrated energy system is established.Simulation analysis shows the dispatching strategy proposed in this paper can increase the green certificate purchasing demand and renewable energy consumption rate,and achieve the goal of low-carbon economic operation of the system.