Optimization of Operating Modes of Pumping Stations Equipped With Parallel-Operated Centrifugal Pumps

The article examines the issues of reducing head losses and optimizing electricity consumption in pumping stations operating in parallel pump mode. A method is proposed to increase energy efficiency by reducing the hydraulic resistances of the pipeline system for parallel-operated pumps and selecting the pipe diameter at an economically optimal value. Using the example of three D1600–90 pumps, capital and operational costs were analyzed for various pipe diameters, and optimal options were identified. The calculations show that correct selection of the pipe diameter ensures that the pumps operate within their optimal working range and allows a significant reduction in electricity consumption over the season.