Automated control of optimal hydraulic modes of the heat supply system of the city of Naberezhnye Chelny

To control the modes of operation of the city's heating networks, a new approach to regulating the city's heat supply system was introduced with the creation of an innovative regime map that allows optimal modes to be maintained with each change in coolant flow in the heating network, covering the entire possible range of network water consumption during the heating period. Thus, one mode card carries a set of separately developed hydraulic calculations for each degree of outdoor air. To improve the management of the city's heat supply system, on the basis of a calculated regime map, software has been developed for automated control of hydraulic modes of operation of heating networks. What is the essence of the innovative regime map: for each flow rate of mains water (step 500 tons per hour), optimally sufficient parameters are determined by hydraulic calculation - setpoints at control points of the thermal network – on frequency control drives in pumping stations, on control valves (RC). Pressure settings are "hammered" into the control controllers of the CHP and RC, for each of the control points. When the flow rate of the mains water at the heat source changes, the parameters at control points throughout the entire heat network (simultaneously) at a given time automatically change.