计及工质流和热传导的热力管网能流动态建模  

Dynamic Modeling of Energy Flow in Heat Supply Network Considering Working Fluid and Heat Conduction

作　　者：胡宪法 张树卿[1] 唐绍普 彭振 HU Xianfa;ZHANG Shuqing;TANG Shaopu;PENG Zhen(State Key Laboratory of Control and Simulation of Power System and Generation Equipment(Tsinghua University),Haidian District,Beijing 100084,China)

机构地区：[1]电力系统及发电设备安全控制和仿真国家重点实验室(清华大学),北京市海淀区100084

出　　处：《中国电机工程学报》2021年第12期4198-4207,共10页Proceedings of the CSEE

基　　金：国家重点研发计划(2019YFE0111500)。

摘　　要：能源互联网在国内兴起,其物理核心多能系统的动态特性和运行调控引起广泛关注,其中热力管网是热力系统和多能系统组网的关键。然而现有热力管网模型绝大多数是管网的水力稳态模型,未考虑管网存量工质的蓄能特性及工质流动、热功转换过程中管网的热力动态过程。此外,管网中工质流动和热传导动态过程同时发生且相互耦合,少有模型对这两类动态过程联立求解。对此,根据能流理论和系统动力学理论,将工质流和热传导动态联立,提出表达统一化的热力管网能流模型,能够对管网的蓄热、做功、能量传输等关键过程准确定量刻画,且易实现较大规模热力管网组网及编程实现。最后通过算例分析验证该热力管网动态模型的合理性和正确性。With the rise of energy Internet in China, the dynamic characteristics and operation regulation of its physical core multi-energy system have attracted extensive attention, among which the thermal network is the key to the networking of thermal system and multi-energy system. However, most of the existing heat pipe network models are hydraulic steady-state models of working medium, which do not consider the energy storage effect of the existing working medium and the dynamic process of heat transfer and flow of working fluid. In addition, the dynamic processes of working fluid flow and heat conduction occur simultaneously and are coupled with each other, and few models solve these two kinds of dynamic processes simultaneously. According to the energy flow theory and system dynamics theory, this paper combined the working fluid flow and heat conduction dynamically, and put forward a unified energy flow model of thermal pipe network, which can accurately and quantitatively describe the key processes such as heat storage, work, energy transmission, etc., and it is easy to realize the networking and programming of large-scale thermal network. In the end, the rationality and correctness of the dynamic model were verified by an example.

关 键 词：热力管网 系统动力学 能流动态模型 水力 热力 工质流 热传导 

分 类 号：TK11[动力工程及工程热物理—热能工程]