Discussion on the transformation of energy saving standard of pumping unit motor

The electric motor is a device that converts electric energy into mechanical energy. The energy consumption of the electric motor is mainly the electric energy lost and wasted in the process of converting electric energy into mechanical energy to do work. It belongs to the energy conversion efficiency of the motor in non-standard environment. When the motor is empty, the motor does not make any useful contribution to the conversion of mechanical energy, that is, the motor does not have any efficiency, but the motor is still consuming power! In the actual production process, the efficiency of the motor is constantly changing from 0% to 100% of the rated power. It is necessary to rely on technical means to improve the actual use efficiency of energy, save energy through technical means, and make the motor reach the state of economic operation according to different working conditions.

I have systematically explained the relevant techniques and principles in several previous posts and I will not repeat them here. The following is an analysis of energy saving investment in our company's energy saving products: Since the application fields of motors are very wide, I only analyze energy saving investment in typical application fields. Other related application fields depend on different working conditions and the actual effect shall prevail.

Investment analysis of economic Operation and energy saving Renovation Project of motor and its working system in oil field Pumping unit:

For a long time, used motor oil field pumping units in oil production, due to the structure of the beam pumping unit itself, and the causes of reservoir geology, the load of the beam pumping unit is the expansion of loading and ensure safe production in order to make the motor and stable operation, equipped with motor is according to the pumping power required for maximum power to limit equipped with motor. In addition, the impact of "generator effect of motor" on the original power under the special working condition of oil field seriously destroys the power supply quality of the grid

As a result, most of the motors used in the pumping unit are in light load operation, and even some running segments are no-load operation. The actual efficiency of the motor is only up to 20%-30%, resulting in great energy waste.