面向用户端的供能管网建模与仿真研究

Research on Modeling and Simulation of Client-Oriented Energy Supply Network

摘要:

三联供用户端供能管网因其地块结构不同、运行工况多变等原因,使得调试周期长、调试时间成本高,并且由于供能系统的调试受季节影响,导致调试灵活性较差。针对该问题,本文提出面向用户端的供能管网仿真模型,用以模拟实际供能系统的运行工况、研究供能管网受控下的工作性能。该模型主要研究对象包括管道、换热器、阀门等器件,通过对其建立数学模型和分析系统结构,而后在MATLAB仿真平台上搭建系统仿真模型。基于该模型,研究管网阀门的控制以调节系统传输介质的流量,达到控制供能系统二次侧供水温度、一次侧回水温度和总管压差等目的。仿真结果验证了本系统建模的可行性与有效性,且该模型对供能系统的调试运行、控制调节具有一定的指导意义。

Abstract:

Considering different land parcel structures and various operation conditions existing in energy supply network for Client-Oriented combined cooling, heating and power System (CCHP), it leads to a long cycle and high cost for debugging. And the debugging of energy supply network is also affected by the season, resulting in poor flexibility. Aiming at this problem, the client-oriented energy supply network model is proposed in this paper to simulate operation conditions of real energy system and to study the working performance of controlled energy network. The models of pipelines, heat exchangers and valves are therefore created. The proposed system model is set up in MATLAB through establishing the mathematical models of the above mentioned objects and analyzing the structure of system. Based on the model, the control strategy of valves are investigated to regulate the flow of transmission medium, so as to control the secondary-side water supply temperature, the primary-side return water temperature and differential pressure. The simulation results show the feasibility and effectiveness of the proposed model, and the proposed model has a certain guiding significance for the debugging operation and control regulation of the energy supply system.