分布式变频泵在保定市热网中的应用
Application of distributed variable frequency pumps to urban heating network of Baoding
摘要：
介绍了保定市热网应用分布式变频泵的设计方案、设备选型、控制策略和运维管理情况，探讨了在实际工程中大规模应用分布式变频泵应注意的问题。结果表明：与中继泵站方案相比，分布式变频泵方案具有节省初投资、节省运行费、对未来工况变化适应性强的优势；分布式变频泵数量众多，需要通过建立水力模拟达到精细化选型，保证大部分水泵工作在效率较高的区域；通过全网集中控制，统一调控各热力站的分布式变频泵与电动调节阀，可以实现全网水力平衡；通过运行参数的在线监测和诊断，及时发现运行中的问题，可以保证分布式变频泵系统的供热质量和节能效果。
Abstract：
Presents the design scheme, equipment selection, control strategy, operation and maintenance management of distributed variable frequency pumps in the urban heating network of Baoding. Discusses the problems that should be paid attention to in the large-scale application of distributed variable frequency pumps. The results show that compared with relay pump station scheme, the distributed variable frequency pump scheme has the advantages of low initial investment, low operating cost and strong adaptability to changes of future working conditions. A large number of distributed variable frequency pumps need to be carefully selected through hydraulic simulation to ensure higher efficiency operation. Through the centralized control of the whole network, the distributed variable frequency pumps and the motorized valves of each heat station can be uniformly regulated and controlled, which realizes the hydraulic balance of the whole network. Meanwhile, through the on-line monitoring and diagnosis of the operation parameters, the operation problems can be found in time, and the quality of the heating and energy saving of the distributed variable frequency pump system can be guaranteed.
Keywords:centralizedheating,pipenetwork,relaypump,distributedvariablefrequencypump,hydrauliccalculation,wholenetworkbalance