综合能源系统建模与仿真:综述、思考与展望

Modeling and Simulation of Integrated Energy System:Review,Reflection and Prospects

建模和仿真将真实系统及其物理性质抽象化为适当的数学形式,并采用数学方法求解以模拟真实系统行为或性能。为综合能源系统在各时间尺度的物理过程建立恰当的数学模型并进行仿真验证,是分析系统运行规律、优化运行策略以及评估运行性能的基础。文中围绕电气热综合能源系统建模和仿真问题,首先介绍了电、气、热子系统和耦合设备的机理模型,总结了建模的研究进展与技术难点。进一步,从仿真框架、算法以及改进策略3个方面介绍了综合能源系统仿真技术所取得的研究进展。特别地,总结了仿真算法中数值法、半解析法、解析法的原理、应用现状及其难点。最后,围绕现存技术难点,从建模和仿真算法2个方面对未来研究进行了展望。

Modeling and simulation abstract real systems and their physical properties into the appropriate mathematical forms and use mathematical methods to solve and simulate the behaviors or performances of the real system.Establishing appropriate mathematical models for the physical processes of the integrated energy system(IES)in various time scales and conducting simulation verification are the basis for analyzing the system operation rules,optimizing operation strategies,and assessing operation performance.Focusing on the modeling and simulation of electricity-gas-heat IESs,this paper first introduces the mechanism models of the electricity,gas,and heating subsystems and coupling units.The research progress and technical difficulties of modeling are then summarized.Furthermore,the research progress of simulation techniques for IESs is described from three key aspects:simulation framework,simulation algorithms,and simulation improvement strategies.In particular,the principle,application status and difficulties of numerical method,semi-analytical method and analytical method in simulation algorithms are summarized.Finally,based on the existing technical difficulties,future research is prospected from two aspects:modeling and simulation algorithms.