基于Modelica模拟的小区供热系统快速故障诊断方法
Rapid fault diagnosis method for residential heating system based on Modelica simulation
摘要：
为提高现场故障诊断效率和小区供热质量,本文提出了一种基于Modelica模拟的小区供热系统快速故障诊断方法。首先,对西安市某小区的供热系统进行了Modelica建模,并使用现场实测运行数据对模型进行了校正。随后,通过调节模型参数,以人工方式引入故障,模拟分析了各类供热系统常见故障发生时的系统运行状态。最后,通过比对故障与正常状态下系统运行数据,归纳出小区供热系统的现场故障诊断工作流程图。经系统模拟验证,该流程图可实现多故障同时发生时的故障检测及分离。由于北方小区供热系统整体架构较为接近,本文所提出的速查流程图可被应用于其他类似供热系统的日常运维。
Abstract：
To improve the efficiency of on-site fault diagnosis and the heating quality of residential areas,this paper proposes a rapid fault diagnosis method for residential heating systems based on Modelica simulation.Firstly,a Modelica model of the heating system of a residential area in Xi’an is established,and the model is calibrated using field-measured operating data.Subsequently,by adjusting model parameters,faults are introduced artificially to simulate and analyse the system operation status when various common faults occur in heating systems.Finally,by comparing the system operation data in fault and normal states,a field fault diagnosis flowchart for residential heating systems is summarized.Verified by system simulation,this flowchart can realize fault detection and isolation when multiple faults occur simultaneously.Since the overall structure of heating systems in northern residential areas is relatively similar,the quick-check flowchart proposed in this paper can be applied to the daily operation and maintenance of other similar heating systems.
Keywords:residential heating system; operation and maintenance; fault diagnosis; digital twins; Modelica simulation