Modeling and analysis of time-varying energy network

Abstract

Different types of energy systems are coupled by energy conversion devices (e.g., induction motors, centrifugal pumps, etc.). It is of great practical significance to study the dynamic characteristics and simulation method of multi-type energy system for the optimization design and performance analysis of integrated energy system. In order to model and analyze the time-varying energy network, from the point of view of the essence of energy, energy network equivalent models of time-varying transfer line (pipe) and energy conversion equipment are established through in-depth study of the mechanism of energy transfer and conversion. On the basis of the time-varying energy network model, a method of modeling and simulating the dynamic characteristics of the integrated energy system by constructing time-varying energy network equations (including state equations and output equations) is proposed, then the validity and practicability of which are verified by a practical example. The research of this paper lays the foundation for the modeling, analysis, optimization and planning of time-varying energy network.