Day-ahead Optimal Scheduling Method for Integrated Energy System Considering Thermal Dynamic Characteristics of Heat Pipe Network

Abstract

In order to analyze the influence of the heat pipe network scheduling constraints on the operation economy of the electric-thermal coupled integrated energy system (ET-IES), this paper proposes a day-ahead optimal scheduling method for the ET-IES considering the temperature gradient constraints of the working fluid in the pipe network. Firstly, a mathematical model of energy equipment with ET-IES is established, and a modeling method considering the thermal dynamic characteristics of the heating pipe network is proposed, and its temperature gradient regulation constraints are established. Then, a day-ahead optimal scheduling model of the ET-IES considering the temperature gradient constraints of the working fluid of the heat pipe network is constructed. This model mainly reflects the influence of the heat storage capacity of the heat network on the operation economy of the IES considering the limitation of the working fluid temperature and the limitation of the working fluid temperature gradient. Finally, a case study is constructed to verify the effectiveness of the scheduling method proposed in this paper.