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山东省肥城市潜水电泵选型不当，剩余扬程多，致使装置运行工况点偏离高效区较远，为此，肥城市组织人员，对试区机组进行现场抽水测试，根据额定扬程与选用扬程的差值大小，选择了三种不同的潜水电泵综合装置技术改造方法：维修保养；变级改造，同时维修保养；变径改造，同时维修保养。试区采取综合措施改造后，流量平均由59．45m3/h提高到62．88m3／h，能源单耗平均由10．53kWh／（kt·m）降低到6．62kWh／（kt·m），综合装置效率由28．59％提高到41．90％，节能32．1％。
Feicheng City, Shandong Province submersible pump improper selection, the remaining lift more, resulting in the device operating point away from the high-efficiency zone farther, To this end, Feicheng City, on-site crew pumping unit test, according to the rated head and the choice of lift Of the difference in size, choose three different submersible pump integrated device technology transformation methods: maintenance; change transformation, at the same time maintenance; change transformation, at the same time maintenance. After the comprehensive measures were taken to renovate the test area, the average flow rate increased from 59.45m3 / h to 62.88m3 / h, and the average unit energy consumption decreased from 10.53kWh / (kt · m) to 6.62kWh / (kt · m) The efficiency of the integrated plant increased from 28.59% to 41.90%, saving 32.1%.