考虑碳交易的造纸综合能源系统用能优化策略

Optimization strategy of energy management of integrated energy system for papermaking considering carbon trading

造纸工业园区作为典型的综合能源消费场景,其内部耦合了多种能源进行联合供应。通过优化工业园区综合能源系统运行,不仅可降低造纸工业用户自身用能成本,同时也可缓解电网供电压力,降低社会碳排放。基于此,提出了考虑碳交易的造纸工业园区生产全流程用能优化模型。首先,针对造纸生产过程中严格的工艺顺序,建立了生产并行模型以及能耗模型,并对整个造纸工业园区的能源单元进行建模。然后,引入阶梯碳交易机制,以园区运行成本与碳交易成本之和为优化目标,建立了造纸工业园区生产全流程用能优化模型。最后,以浙江某地造纸工业园区进行算例仿真,并以不同场景进行对比分析。算例仿真验证了用能优化模型的经济性和低碳性,所求策略可为造纸工业的节能减排提供技术支撑。

As a typical integrated energy consumption scenario,the papermaking industrial park is internally coupled with a variety of energy sources for joint supply.It is of great significance to optimize the operation strategy of the integrated energy system(IES)in the park,which can not only reduce the energy consumption of industrial users,but also alleviate the pressure of power supply of the grid and further reduce the carbon emission.Based on this context,this paper proposes an optimization strategy for the papermaking industrial park considering carbon trading and operational constraints in the whole production process.Firstly,a parallel production model and the corresponding energy consumption model are established considering the strict sequence of production process,and energy unit models are also formulated for the IES within the park.Then,considering the stepped carbon trading mechanism,the low-carbon economic energy management model of the IES in the papermaking industrial park is established with minimizing the sum of operational cost and the cost of carbon trading.Finally,case studies are conducted based on a papermaking industrial park in Zhejiang Province,and different production scenarios are compared and analyzed.The numerical results verify the economy and low-carbon nature of the energy management model of the papermaking industrial park,and the strategy also obtained can provide technical support for energy saving and emission reduction of the papermaking industry.