绿证与改进型阶梯式碳交易互动机制下的CHP系统低碳经济调度研究

A study of low-carbon economic dispatching in CHP system under the interactive mechanism of green certificates and improved stepped carbon trading

为了进一步降低热电联产型源荷系统的碳排放量,同时兼顾经济效益,文章改进了普通阶梯式碳交易的交易模型,提出了一种绿证与改进型阶梯式碳交易互动机制下的CHP型源荷系统低碳经济调度策略。构建热电联供型能源系统模型,确定能源测、转换侧、负荷侧模型,同时构建需求响应机制;在数学模型的基础上构建双层调度模型,上层模型是改进型阶梯式碳交易优化模型,利用差分进化算法来实现阶梯式碳交易参数自适应变化;下层源荷系统调度仿真模型,以系统运行成本为目标函数,耦合了碳交易机制和绿证策略,实现直接、间接同时减排,同时利用Cplex求解器进行最优化求解。最后,建立四种典型场景,对比分析得出所提策略能显著降低碳排放量,同时具有较好的经济效益,能够为源荷系统低碳经济调度提供参考。

In order to further reduce the carbon emissions of combined heat and power(CHP)-based source-load system and take into account the economic benefits,this paper improves the trading model of common stepped carbon trading,and proposes a low-carbon economic dispatching strategy of CHP-based source-load system under the interactive mechanism of green certificate and improved stepped carbon trading.The model of CHP energy system is established,the models of energy,conversion side and load side are determined,and the demand response mechanism is constructed.A two-layer scheduling model is constructed on the basis of the mathematical model.The upper layer model is an improved stepped carbon trading optimization model,and the differential evolution algorithm is used to realize the adaptive change of the stepped carbon trading parameters.Secondly,the scheduling simulation model of the lower source-load system is constructed,and the carbon trading mechanism and green certificate strategy are coupled with the operating cost of the system as the objective function to achieve direct and indirect emission reduction at the same time,and the Cplex solver is used to optimize the solution.Finally,four typical scenarios are established,and comparative analysis shows that the proposed strategies can significantly reduce carbon emissions and have good economic benefits at the same time,which can provide a reference for low-carbon economic dispatching of source-load system.