计及非线性的分布式能源系统整体运行优化  

Holistic Optimization of the Distributed Energy Systems Considering Nonlinear Characteristics

作　　者：徐榕鸿 赵甜[1] 吕洪坤 国旭涛 马欢[1] 苟星 陈群[1] XU Ronghong;ZHAO Tian;LYU Hongkun;GUO Xutao;MA Huan;GOU Xing;CHEN Qun(Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China;Electric Power Science Research Institute,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]清华大学工程力学系,热科学与动力工程教育部重点实验室,北京100008 [2]国网浙江省电力有限公司电力科学研究院,杭州310014

出　　处：《工程热物理学报》2025年第1期276-285,共10页Journal of Engineering Thermophysics

基　　金：国家电网有限公司科技项目资助(No.5419-202119243A-0-0-00)。

摘　　要：分布式综合能源系统中多能输运与转换过程耦合,非线性强,整体精细化建模分析困难。本文基于热量流法,结合电力系统潮流约束,构建了系统的整体数学模型,完整考虑系统中多能输运与转换的非线性特征,并提出了其“分层–分治”迭代优化算法,实现了系统的高效、鲁棒运行优化。结果表明,本文构建模型的优化结果更准确,忽略非线性传热约束后电制热装置制热量相对误差可达36.7%,忽略节点电压约束后储热装置实时储热量相对误差可达57.3%。The coupling of multi-energy transportation and conversion processes in distributed integrated energy systems is highly nonlinear,posing challenges for detailed modeling and analysis.This study presents a comprehensive mathematical model of the system based on the heat current model,incorporating power system load flow constraints.It fully considers the nonlinear characteristics of multi-energy transportation and conversion within the system.Furthermore,an iterative optimization algorithm,employing the idea of divide and conquer,is proposed to achieve efficient and robust operation optimization of the system.The results demonstrate that the optimized model presented in this study provides more accurate results.Neglecting the nonlinear heat transfer constraints leads to a relative error of up to 36.7%in the heating capacity of the electric heating device,while neglecting the bus voltage constraints results in a relative error of up to 57.3%in the real-time heat storage capacity of the thermal storage device.

关 键 词：分布式能源系统 多能耦合 热量流模型 传热约束 

分 类 号：TK123[动力工程及工程热物理—工程热物理]