双碳背景下CCHP系统运行策略优化

Optimization of the CCHP System Operation Strategy Under the Background of Carbon Peaking and Carbon Neutrality

冷热电三联供(combined cooling heating and power,CCHP)系统有着较高的一次能源利用率、较小的环境污染以及较高的经济性等优点,可有效减轻目前困扰全球的环境污染问题,是社会经济、环境可持续发展的需要,也被认为是实现双碳目标的手段之一。随着我国3060双碳目标的提出和国内碳交易市场的发展,碳排放问题势必会成为影响CCHP系统运行策略的一个重大因素。为解决在双碳背景下的CCHP系统运行策略优化问题,通过Matlab软件建立CCHP系统的数学模型,分别在碳排放价格与碳排放指标这2种不同约束条件下,以运行成本最低为目标,采用非线性规划法,优化CCHP系统的运行策略,并通过对某建筑的CCHP系统的负荷计算,验证了该数学模型在不同碳排放约束条件下都可很好地提供合适的运行策略,同时也为CCHP系统在双碳背景下的应用与发展提供了参考。

Combined cooling heating and power(CCHP)system has the advantages of high primary energy utilization rate,small environmental pollution and high economy,which can fully and effectively reduce the environmental pollution problems affecting the whole world,which is the need of social economy and environmental sustainable development,and is also considered as one of the means to achieve the carbon peaking and carbon neutrality goal.In recent years,with the proposal of China's carbon peaking and carbon neutrality target and the development of the domestic carbon trading market,the carbon emission problem will become a major factor affecting the operation strategy of CCHP system.In order to solve the optimization problem of CCHP system in carbon peaking and carbon neutrality background,we use the Matlab to establish a mathematical model of CCHP system.Under two different constraints of carbon emission price and carbon emission index,the model uses the nonlinear programming method to optimize the CCHP system to achieve the lowest operating cost.Through the load calculation of the CCHP system in a certain building,it is verified that the model can provide a suitable operation strategy under different carbon emission constraints,and also provide a reference for the application and development of the CCHP system in the background of carbon peaking and carbon neutrality.