|Sun Yuhan,Zheng Liling,Zhang Xinwei.大水位变幅下库区取水泵站水泵机组变频调速研究[J].灌溉排水学报,2019,(Z1):-.
|Study on Varied Frequency Regulation and Operation of Water Pump Units in Stations Pumping from Reservoir
Sun Yuhan1,2, Zheng Liling1,2, Zhang Xinwei1,2
1.Yellow River Engineering Consult Co.,Ltd,Zhengzhou,450003;2.China
|To solve the flow match problem between the first pump station and the following station when the first pump station operates under large various water level, Based on the model of water step-pumping system design of One pumping water engineering and on the frequency regulating for various speed principle, it is analyzed that when the first pump station operates at different water level in upstream reservoir, based on the qualitative similarity analysis and calculation done on pump performance curve, various frequency pump performance curves are calculated, and pump real operating conditions and operating range of the first pump station are determined in various reservoir water level. Comparison analysis are done on the results of the operation for the first pump station and the second pump station, it is shown that the flow in the two stations can be matched. This research provides reference and guide for the determination of the rated operating conditions of the pump extracting water from reservoir which operates in large varied range water levels.
|Key words: pumping water from reservoir; pump performance curve; long axis pump; varied frequency regulation;