CN104852669A - Variable-frequency mutual feedback control system for group control of oil wells - Google Patents
Variable-frequency mutual feedback control system for group control of oil wells Download PDFInfo
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- CN104852669A CN104852669A CN201510219403.XA CN201510219403A CN104852669A CN 104852669 A CN104852669 A CN 104852669A CN 201510219403 A CN201510219403 A CN 201510219403A CN 104852669 A CN104852669 A CN 104852669A
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- oil
- oil wells
- inverter
- electricity
- well
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Abstract
The present invention discloses a variable-frequency mutual feedback control system for the group control of oil wells, which comprises a DC power source and a plurality of inverter control cabinets. Each inverter control cabinet is internally provided with an inverter and an oil-well motor, wherein the two ends of the inverter are respectively connected with the DC power source and the oil-well motor. The DC power of the DC power source is converted into the AC power by the inverters to be supplied to the oil-well motors. In all oil wells, neither the stroke nor the frequency of strokes is synchronous. That means, the electricity is consumed during the lifting process in some oil wells, while the electricity is generated during the declining process in other oil wells. The voltages applied on DC buses are automatically detected by the inverters, so that the generated electricity of a pumping unit and the consumed electricity of a motor on the same DC bus are kept balanced. According to the invention, the power factor is improved, and the capacity of a wellsite transformer is reduced. The motor generating electricity is recycled, so that the mutual feedback sharing efficiency and the cyclic utilization efficiency of the energy of the DC buses are improved. Meanwhile, oil wells can be individually controlled according to the production states of the oil wells, so that the energy-saving efficiency of the overall system is improved.
Description
Technical field
The present invention relates to oil well control technology field, specifically a kind of oil well team control frequency conversion presents control system mutually.
Background technology
Domestic traditional oil well is continued to use three-phase AC line for power mode always and is set up well site, low pressure is reduced to by transformer, be transported to each oil well by the total cabinet of distribution and start cabinet, the control of oil-well motor mostly is directly to start and controls or start control by frequency converter, direct startup control technology is ripe, simple and practical and failure rate is low, and the power factor being started control by frequency converter improves many, can subtract appearance synergy, but effect is very dissatisfied.Shortcoming is as follows:
1. one one change, its operating load is about 30% of transformer capacity, and efficiency is low, and waste is large.
2. in individual well jig frequency, acting varies, and lacks the control devices such as necessary speed and pressure-regulating, and total head start and stop injure large to oil well and electrical network.
3. have down electric phenomenon, do not control and utilize, cause power factor too low, loss is large, the wasting of resources.
Summary of the invention
The object of the present invention is to provide and a kind ofly recycle that efficiency is high, the oil well team control frequency conversion of good energy saving property presents control system, mutually to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of oil well team control frequency conversion presents control system mutually, comprise DC dynamo source and multiple inversion control cabinet, inverter and oil-well motor is provided with in described inversion control cabinet, the two ends of described inverter connect DC dynamo source and oil-well motor respectively by contactor, and the direct current on DC dynamo source is changed into alternating current supply oil-well motor by described inverter.
Compared with prior art, the invention has the beneficial effects as follows:
Invention increases power factor, reduce the capacity of transformer, will the recycling of falling generated energy, the mutual feedback that improve DC bus energy is shared and recycles efficiency, individual character control can also be carried out according to the production technology situation of each oil well, total system energy-saving efficiency is improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-DC dynamo source; 2-inversion control cabinet; 3-inverter; 4-oil-well motor.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1, a kind of oil well team control frequency conversion presents control system mutually, comprise DC dynamo source 1 and multiple inversion control cabinet 2, inverter 3 and oil-well motor 4 is provided with in described inversion control cabinet 2, the two ends of described inverter 3 connect DC dynamo source 1 and oil-well motor 4 respectively by contactor, and the direct current on DC dynamo source 1 is changed into alternating current supply oil-well motor 4 by described inverter 3.
Described oil well team control frequency conversion is presented multiple well head in control system mutually and is shared a DC dynamo source 1, the inversion control cabinet 2 of every mouthful of oil well is all connected on same DC bus, direct current on DC bus is changed into the adjustable alternating current of electric voltage frequency to supply oil-well motor 4 by the inverter 3 of every mouthful of oil well, because each mouth oil well stroke jig frequency is asynchronous, what have is promoting consumed energy, have decline fall generated energy, inverter 3 automatically detects the voltage on DC bus, makes each oil pumper on same DC bus fall generated energy and electrical consumption energy and keeps balancing.
Invention increases power factor, decrease the capacity of transformer, will the recycling of falling generated energy, the mutual feedback that improve DC bus energy is shared and recycles efficiency, individual character control can also be carried out according to the production technology situation of each oil well, total system energy-saving efficiency is improved.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (1)
1. an oil well team control frequency conversion presents control system mutually, it is characterized in that, comprise DC dynamo source (1) and multiple inversion control cabinet (2), inverter (3) and oil-well motor (4) is provided with in described inversion control cabinet (2), the two ends of described inverter (3) connect DC dynamo source (1) and oil-well motor (4) respectively by contactor, and the direct current on DC dynamo source (1) is changed into alternating current supply oil-well motor (4) by described inverter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219403.XA CN104852669A (en) | 2015-04-30 | 2015-04-30 | Variable-frequency mutual feedback control system for group control of oil wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219403.XA CN104852669A (en) | 2015-04-30 | 2015-04-30 | Variable-frequency mutual feedback control system for group control of oil wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104852669A true CN104852669A (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510219403.XA Pending CN104852669A (en) | 2015-04-30 | 2015-04-30 | Variable-frequency mutual feedback control system for group control of oil wells |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786728A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of energy storage environment-friendly type oil pumper distribution system |
| CN110265990A (en) * | 2018-03-12 | 2019-09-20 | 丁美连 | A kind of more wells coupling common DC bus voltage balance controls of pumping unit and fault detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2075716B (en) * | 1980-04-30 | 1984-05-16 | Zero Max Ind Inc | Energy saving motor speed controller |
| CN103427729A (en) * | 2012-05-17 | 2013-12-04 | 中国石油化工股份有限公司 | Rod pumped well group control system based on direct current bus |
| CN204615710U (en) * | 2015-04-30 | 2015-09-02 | 西安鹏瑞石油科技有限公司 | A kind of oil well team control frequency conversion presents control system mutually |
-
2015
- 2015-04-30 CN CN201510219403.XA patent/CN104852669A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2075716B (en) * | 1980-04-30 | 1984-05-16 | Zero Max Ind Inc | Energy saving motor speed controller |
| CN103427729A (en) * | 2012-05-17 | 2013-12-04 | 中国石油化工股份有限公司 | Rod pumped well group control system based on direct current bus |
| CN204615710U (en) * | 2015-04-30 | 2015-09-02 | 西安鹏瑞石油科技有限公司 | A kind of oil well team control frequency conversion presents control system mutually |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786728A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of energy storage environment-friendly type oil pumper distribution system |
| CN106786728B (en) * | 2015-11-19 | 2020-08-11 | 中国石油化工股份有限公司 | Energy-storage environment-friendly pumping unit power distribution system |
| CN110265990A (en) * | 2018-03-12 | 2019-09-20 | 丁美连 | A kind of more wells coupling common DC bus voltage balance controls of pumping unit and fault detection method |
| CN110265990B (en) * | 2018-03-12 | 2023-11-14 | 丁美连 | Multi-well coupling common direct current bus voltage balance control and fault detection method for oil pumping unit |
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Application publication date: 20150819 |
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