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Adopting methods such as adjusting balance, energy feedback, and braking resistance absorption, in order to solve the problem of "reverse power generation" of the pumping unit. Adjusting the balance degree has drawbacks such as high labor intensity among workers, the need to stop working, and the inability to adjust dynamically; The typical drawbacks of energy feedback are that the feedback current causes harmonic pollution to the power grid and cannot ensure safe operation of the power grid; The absorption of braking resistors can cause energy waste, high system temperature, fire accidents, and affect device life.

When the kowtow machine falls, this energy storage system converts excess power potential energy into electrical energy and stores it in a supercapacitor. When the kowtow machine goes up, the supercapacitor discharges it to the motor. Through this method, the annual power saving rate can reach 20-30%