In recent years, various kinds of energy-saving products for pumping units have emerged continuously, but they are limited to "frequency control" technology. The frequency conversion speed regulation is applied to the pumping unit. As its name implies, it is to change the working conditions of the pumping unit, and the result of the deceleration operation will undoubtedly affect the output.
Power Saver Pump Saver has added an automatic “load tracking†function on the basis of covering the functions of common frequency converters.
Power Saver does not need any external detection device. With the change of up and down stroke of the pumping unit, the load rate of the motor is detected online in real time. The input voltage and load current of the motor are adjusted online to keep the operating point at its optimum point, ie, the motor is extracted. Electricity is just a part of it.
First, the reason for the power loss of the pumping unit
1. The pumping unit is a typical wheel load, and the power factor changes regularly during operation.
2. The design capability of the oil pumping device is designed and selected according to the maximum extraction capacity, usually leaving a large margin;
3. With the extension of oil wells' production time, the liquid production volume has gradually declined, and the "big horse-drawn car" phenomenon caused by half-fishing and empty fishing on the pumping unit has become increasingly serious;
4. The pumping unit has a constant design capability and cannot cope with the waste caused by changes in the load.
Second, pumping machine power-saving transformation of the control difficulties
1. The up and down travel time is short (only a few seconds), and the response speed to the energy saver is demanding.
2. For the pumping unit with longer travel time, only by adjusting the acceleration and deceleration of the motor to save power, the working conditions of the pumping unit will be changed due to improper setting of the parameters, which will affect the crude oil output.
3. The pumping unit is a potential energy load, especially when the counterweight is unbalanced. During a certain stage of the entire stroke, when the rotor speed of the motor is higher than the speed of the rotating magnetic field, the motor is in the state of anti-power generation and anti-power generation occurs.
Third, the unique features of Super Power Pumping Unit Motor Power Saver (common inverter does not have):
1. Tracking load function during 50Hz operation
No external device is needed to detect changes in the load rate of the pumping unit in real time, and the input power of the motor is adjusted online.
2. Tracking load function during deceleration operation
Based on the V/F running curve of the inverter, the optimal input power of the motor is adjusted online according to the change of the load of the motor.
3. Anti-power generation suppression function: no need to install the brake. When the anti-power generation occurs, the output frequency of the energy saver automatically tracks the motor operating frequency and remains consistent, greatly reducing the side effects of anti-power generation.
4. Anti-shock load function: Instantaneously increase the input voltage (200V in 0.1 seconds) to meet the motor input power when the pumping unit is suddenly loaded.
5. Installed between the power supply and the motor, it does not change the original performance of the motor, does not change the original electrical control system and safety.
Fourth, additional functions
1. Perfect protection function: over current, over voltage, under phase, under voltage, overheating, momentary power failure, etc. can be protected.
2. Soft start and soft stop functions: By setting, soft start and soft stop control of the motor can avoid the impact of large current on the motor and reduce the number of “broken rodsâ€. The service life and maintenance period of the equipment are greatly extended. .
3. Improve the operation instructions and fault inquiries to facilitate the daily maintenance of equipment management personnel.
4. Wide range of application, suitable for all pumping unit motors (three-phase AC asynchronous motors) that allow deceleration and not allow deceleration.
5. Please refer to Shenwang Electric's website for more detailed information on the features of the Supersonic Pumper Motor Saver.