Peak clipping and valley filling servo driving method system used in oil field oil pumping machine

A servo-driven, peak-shaving and valley-filling technology, which is applied in the program control and electrical program control of the sequence/logic controller, can solve problems such as power consumption adjustment, reduce power supply pressure, reduce labor intensity, and improve scientific research. Effects of management level and efficiency of mechanical oil recovery system

Inactive Publication Date: 2016-09-28
王晓民
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Problems solved by technology

[0003] At present, the energy-saving equipment widely used in oilfields includes: rare earth permanent magnet drive devices, frequency conversion speed control devices, reactive power compensation devices, etc. These devices mainly aim to save electricity by improving the power factor of the equipment, but none of them can be realized. The problem of adjusting the power consumption in the peak, valley and flat three time periods

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  • Peak clipping and valley filling servo driving method system used in oil field oil pumping machine
  • Peak clipping and valley filling servo driving method system used in oil field oil pumping machine

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Embodiment Construction

[0040] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0041] like figure 1As shown, the grid power supply 1 supplies power for the peak-shaving and valley-filling servo drive method system for oil field pumping units, which provides a three-phase AC 380V power frequency (50Hz) power supply, and the voltage and frequency of the grid power supply 1 are adjusted by the servo driver 2 through the servo driver 2. Adjust according to the preset parameters, and then output the adjusted power to the pumping unit motor 5 to drive the pumping unit to work.

[0042] The servo drive method system for peak cutting and valley filling of oilfield pumping units provided by the present invention includes a servo driver 2, a GPS time controller 3 and a power frequency contactor 4, wherein:

[0043] The GPS time controller 3 outputs the peak period signal, the valley p...

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Abstract

The invention discloses a peak-shaving and valley-filling servo driving method system for an oil pumping unit, which comprises a servo driver, a GPS time controller and a power frequency contactor. The precise GPS time controller can automatically output corresponding control signals to the servo driver at the start and end time of each period of peak and valley flat. After receiving the signal, the servo driver controls the output power of the pumping unit motor according to the preset parameters. The principle of parameter setting is to reduce the power output during the peak electricity price period and increase the power output during the valley electricity price period. On the premise of keeping the total output unchanged, by increasing the valley power and reducing the peak power consumption, the purpose of reducing electricity prices and electricity expenses is achieved. At the same time, this system adds a power frequency control loop, which can switch to power frequency operation in time when the servo system fails, without affecting the normal production of the oil well. The invention has the advantages of simple circuit structure, safety and reliability, low cost and good practical application value.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a peak-shaving and valley-filling servo drive method system for oil field pumping units. Background technique [0002] The peak-valley time-of-use electricity price divides the 24 hours of a day into three periods: peak, valley and flat. According to the electricity tariff standard of power supply companies, users are encouraged to implement the peak-valley electricity price, that is, within 24 hours of the day, it is divided into several time periods and the normal time period is used. The electricity price is the basic electricity price. During the peak electricity price period, the electricity price standard is 1.5 times the normal electricity price, and during the valley period, the electricity price standard is 0.5 times the normal electricity price. Therefore, after changing the proportion of electricity consumption during the peak and valley hours, the average ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 王晓民
Owner 王晓民
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