计及热网蓄热特性的多区域综合能源系统多元储能规划

Multiple Energy Storage Planning of Multi-district Integrated Energy System Considering Heat Storage Characteristics of Heat Network

面向基于冷热电联供系统和热网构建的多区域综合能源系统(integrated energy system,IES),该文提出计及热网蓄热特性的多区域IES多元储能规划方法。首先,基于能量守恒方程推导热网蓄热模型,以量化热网的缓冲能力;在此基础上,以年综合成本最小为目标,建立计及热网蓄热特性的多区域IES多元储能规划模型;然后,针对区域互联热网管道流量变化导致模型非凸的问题,利用凸包方法将模型转凸,并设计自适应求解策略,提出凸包自适应优化算法以实现模型的有效求解。最后,天津某实际多区域IES的规划仿真和分析验证了该文所提模型和算法的有效性。

Focusing on the multi-district integrated energy system(IES)based on the combined cooling,heating and power system,and heat network,this paper proposes a multi-district IES multiple energy storage planning method that considers the heat storage characteristics of heat network.First,the heat storage model of heat network is derived based on the energy conservation equation to quantify the buffer capacity of heat network.With the goal of minimizing the annual comprehensive cost,a multiple energy storage planning model of multi-district IES considering the heat storage characteristics of heat network is established.Then,to address the problem that the model is non-convex due to the fluctuations of pipeline flow in district interconnected heat network,the convex hull adaptive optimization algorithm is proposed to achieve the effective solution of the model by combining convex hull and the adaptive solution strategy.Finally,the planning simulation and analysis of a practical multi-district IES in Tianjin verify the validity of the proposed model and algorithm.