供热系统输配网络模型简化方法研究

该文以供热系统枝状网这种特殊拓扑结构的流体网络系统为研究对象,阐述了网络模型的简化原则,提出了相应的网络简化的方法。讨论的基准有两点：一是保证简化前后网络的温度延迟时间一致;二是保证简化前后工质的流动阻力保持不变。简化的网络模型,在动态性能损失不大的情况下,计算负荷大大降低。这种简化,对于掌握网络的热动态以及供热系统优化运行具有重要的意义。

Study of Model Simplification Technology of Dsitrict Heating Network

According to investigation of the district heating network model, thi s paper presents a new algorithm for network simplification. The simplificatio n is based on two points: one is that the delay time of temperature is kept to be the same before and after. The another is that the resistance coefficient is kept t o be the same. With little lose of the dynamic characteristics, the computing lo ad o f the flow network model has been reduced largely. The simplification technology has important effect on the understanding of the system dynamic and the optimiz ation operation of the district heating system.