Study on zero pressure point control strategy of distributed variable frequency heating system

Considering the existing problems of distributed pump system with variable frequency control, performs simulation on an actual project to investigate a variety of adjusting processes of the distributed pump system with variable frequency control where pressure balance pipeline is installed. Analyses the operational hydraulic characteristics of single heat exchanging station and overall heat exchanging stations of network, and points out that the existence of the pressure balance pipeline results in the independence of control and the inconsistency of the hydraulic regulating between heat source side and the user side (heat exchanger station). Finally, points out the control target for energy conservation operation adjustment on this kind of system.