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根据大变幅水位水源泵站的特点，提出用单绕组换向法变极的方案来实现双速潜水电泵的变速技术，并通过分析比较，证明双速潜水电泵具有能拓宽水泵工作高效区的范围、节约能源及建站投资低的优越性，值得推广应用。
According to the characteristics of pump stations with large amplitude and fluctuating water level, a scheme of changing poles with single winding commutation method is proposed to realize the speed-changing technology of two-speed submersible pump. The analysis and comparison show that the two-speed submersible pump has the functions of widening pump efficiency The scope of the district, energy conservation and low investment in construction station superiority, it is worth to promote the application.