会议名称：2023年IEEE工业电子协会年会（IEEE IECON 2023）
报告题目：Existence Conditions of Equilibrium in Integrated Energy System
摘要：Multi-energy flow analysis is the fundamental work to study the state estimation, safety analysis, and optimal control of integrated smart energy system (ISES). However, the randomness of renewable energy can easily lead to no static equilibrium in ISES, making its static stability a huge challenge. In addition, the coupling effect between multiple energy flows makes the analysis of the static stability of ISES more complicated. In this paper, the existence of equilibrium of ISES under multi-energy flow coupling is analyzed, and the analytical sufficient conditions for the static stability of the system are given. Firstly, the power flow equation of the ISES is derived. Then, based on Brouwer’s fixed-point theorem, the analytical sufficient conditions for the power flow equation of the ISES are derived. Finally, a simulation model based on Matlab/Simulink is established, and the simulation results verify the correctness and effectiveness of the proposed conclusions.