考虑梯级碳交易机制和电转气两阶段运行的综合能源系统优化

Integrated Energy System Optimization Considering Cascading Carbon Trading Mechanism and Two-stage Operation of Power-to-gas

为提升综合能源系统(integrated energy system,IES)的能效水平,提出了一种考虑梯级碳交易机制和电转气(power-to-gas,P2G)两阶段运行的IES调度模型。首先引入碳捕获与封存技术(carbon capture and storage,CCS),解决了P2G所需碳源和热电联产机组的碳排放问题;同时在传统P2G的基础上引入氢燃料电池,研究P2G两阶段运行的多重效益;最后,运用梯级碳交易机制限制碳排放。在此基础上,建立以碳交易成本、系统运行成本、新能源利用率相关成本最小为目标的优化调度模型,利用IPOPT商业求解器进行求解,通过与其他传统模型对比分析,表明所提模型的经济性、低碳性和风光消纳能力较高。

In order to improve the energy efficiency level of the integrated energy system(IES),this paper proposes an IES scheduling model considering cascading carbon trading mechanism and two-stage operation of power-to-gas(P2G).First of all,the carbon source required for P2G and the carbon emission problem of combined heat and power units are solved through the introduction of carbon capture system;hydrogen fuel cell are added to the traditional P2G to study the multiple benefits of P2G two-stage operation;finally,a cascade carbon trading mechanism is used to limit carbon emissions.On this basis,an optimal scheduling model with the goal of carbon transaction cost,system operation cost,wind and solar abandon cost is established,and the IPOPT commercial solver is used to solve,and through comparative analysis with other traditional models,the economy,low carbon and wind and solar absorption capacity of the proposed model are indicated.