Energy ConservationCentralized Control Method for Parallel Feedwater Pumps with Variable Frequency Speed Regulation Considering Flow Rate Change
To improve the efficiency of parallel water supply pumps in building water supply,a frequency conversion speed regulation energy-saving centralized control method for parallel water supply pumps with flow changes is proposed.Based on the analysis of the operating conditions of parallel feedwater pumps with dimensionless theory to divide the frequency conversion mode and adjustment mode,a frequency conversion speed regulation function is established according to the frequency modulation time and adjustment mode.Then the frequency modulation parameters of the parallel device and the feedwater pump is determined under the overall response constraints.And the flow change form is determined,and the flow change equation of energy-saving centralized regulation is established based on the assumption that there is a balance point.Finally,the efficient control range of water pumps is determined,and a centralized energy-saving control method is designed based on the similarity of water pump operation rules.The experimental results show that the new method can effectively control the head and work efficiency of parallel water pumps,achieve the working goals of parallel water supply pumps,and has application value.
Centralized controlVariable frequency speed regulationFlow changesParallel water supply pumps
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