Abstract:In the exploiting oil fields in the stage of high water-cut, the submersible pump has been widely applied, whereas how to improve the oil recovery systems efficiency, reduce power consumption of pump wells became the focus of energy conservation field. In this paper, a new intelligent on-load tap-changer transformer of the electric submersible pump is designed. The optimum operating voltage is analyzed, and the composition and the working processes are provided, finally, the indoor and outdoor experiments are carried out. Experimental results show that the device can effectively select the best voltage, and the effect of power conservation is remarkable.