CN116632877B - Power supply device and power supply method of oil field pumping unit - Google Patents
Power supply device and power supply method of oil field pumping unit Download PDFInfo
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- CN116632877B CN116632877B CN202310882442.2A CN202310882442A CN116632877B CN 116632877 B CN116632877 B CN 116632877B CN 202310882442 A CN202310882442 A CN 202310882442A CN 116632877 B CN116632877 B CN 116632877B
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- 238000005086 pumping Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 63
- 238000005070 sampling Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 150000002641 lithium Chemical class 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 17
- 230000003287 optical effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical class [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses a power supply device and a power supply method of an oil field pumping unit, wherein the method comprises the following steps: acquiring electric data of a direct current bus connected with a target oil pumping unit at different moments in a preset time period, and further determining electric data change information of the direct current bus in the preset time period; determining the working state of the target pumping unit according to the electric data change information; if the working state of the target oil pumping unit is an uplink state, charging the direct current bus; and if the working state of the target oil pumping unit is a downlink state, collecting reverse flow electricity generated by the target oil pumping unit, storing the reverse flow electricity, and charging the direct current bus when the working state of the target oil pumping unit is an uplink state. The backflow electricity generated by the pumping unit is stored and utilized, so that the influence of backflow current on the power grid caused by the backflow current entering the power grid is avoided, and meanwhile, the electricity cost of the pumping unit is saved.
Description
Technical Field
The invention relates to the technical field of power supply management of oil pumping units, in particular to a power supply device and a power supply method of an oil pumping unit in an oil field.
Background
The pumping unit is a machine equipment for exploiting petroleum, and is commonly called as "kowtow machine". The pumping unit is the most main lifting equipment in a sucker rod pumping system. Depending on whether there is a beam, it can be classified into a beam pumping unit and a non-beam pumping unit.
When the pumping unit is in a down stroke, namely in a down state, the sucker rod string falls down by self weight, the running speed of the pumping unit is higher than the driving speed of the motor to the sucker rod string, the rotating speed of the motor rotor is higher than the synchronous rotating speed of the motor, the pumping unit converts potential energy into electric energy, the pumping unit drags the motor to generate electricity at the moment, the back flow occurs, namely 'reverse generation', the electricity generation frequency and the voltage are different from those of a power supply network, the quality of a power grid is deteriorated, and the power grid and other electric equipment are damaged.
Disclosure of Invention
In view of the above, the invention provides a power supply device and a power supply method for an oil pumping unit in an oil field, which are used for solving the problems that in the prior art, when the oil pumping unit is in a descending state, energy backflow is generated, and a power grid and other electric equipment are affected. To achieve one or a part or all of the above or other objects, the present invention provides a power supply device for an oil pumping unit in an oil field, comprising: the CPU main control unit, the voltage sampling circuit, the current sampling circuit, the first IGBT unit, the second IGBT unit, the DC-DC power supply, the preset capacitor and the capacitor management unit;
The CPU main control unit is connected to a direct current bus connected with the target pumping unit through the voltage sampling circuit and the current sampling circuit respectively, the CPU main control unit is respectively connected with the first IGBT unit and the second IGBT unit in a data mode, the CPU main control unit is connected with the preset capacitor through the capacitor management unit, the preset capacitor is connected to the direct current bus connected with the target pumping unit through the DC-DC power supply and the second IGBT unit, and the preset capacitor is connected to the direct current bus connected with the target pumping unit through the first IGBT unit.
Optionally, the apparatus further includes: the pre-charging unit, the input of pre-charging unit is connected direct current busbar, the output of pre-charging unit with predetermine the electric capacity and be connected, pre-charging unit includes third IGBT unit and pre-charging circuit, third IGBT unit with CPU master control unit data connection, pre-charging circuit with predetermine the electric capacity electricity and be connected, the pre-charging way passes through third IGBT unit with direct current busbar is connected.
Optionally, the apparatus further includes: and the discharge loop is arranged between the first IGBT unit and the direct current bus.
Optionally, the preset capacitor adopts a mixed structure of a lithium-ion battery and a capacitor.
On the other hand, the application also provides a power supply method of the oil field pumping unit, which is applied to the power supply device of the oil field pumping unit and comprises the following steps:
the CPU main control unit acquires electric data of a direct current bus connected with a target pumping unit at different moments in a preset time period through the voltage sampling circuit and the current sampling circuit, wherein the electric data comprises current data and voltage data, and then the CPU main control unit determines electric data change information of the direct current bus in the preset time period;
the CPU main control unit determines the working state of the target pumping unit according to the electric data change information; if the working state of the target oil pumping unit is an uplink state, the CPU main control unit controls the first IGBT unit and the capacitor management unit to release the electric energy stored by the preset capacitor and charge the direct current bus;
And if the working state of the target oil pumping unit is a downlink state, the CPU main control unit controls the second IGBT unit and the capacitance management unit to collect reverse current generated by the target oil pumping unit, and stores the reverse current into the DC-DC power supply and the preset capacitance, wherein the stored reverse current is used for charging the direct current bus when the working state of the target oil pumping unit is an uplink state.
Optionally, the step of determining the working state of the target pumping unit according to the electrical data change information includes:
identifying voltage lifting data in the electric data change information, and determining an uplink state of the working state of the target pumping unit if the voltage lifting data reach a first threshold value, wherein the first threshold value is a boosting threshold value;
and if the voltage rise and fall data reach a second threshold, determining a downlink state of the working state of the target pumping unit, wherein the second threshold is a voltage reduction threshold.
Optionally, the step of releasing the electric energy stored in the preset capacitor and charging the dc bus includes:
Identifying current change data in the electric data change information, and determining energy change of the transmission energy of the direct current bus in a preset time period according to the voltage rise and fall data;
And determining the electric energy release amount of the preset capacitor based on the energy change amount, and further completing the charging of the direct current bus.
Optionally, the method further comprises:
And when the energy variation is larger than the maximum storage amount of the preset capacitor, controlling the DC-DC power supply to charge the preset capacitor, wherein the charge amount of the DC-DC power supply for charging the preset capacitor is equal to the difference value of the energy variation minus the maximum storage amount of the preset capacitor.
The implementation of the embodiment of the invention has the following beneficial effects:
According to the application, the electric data of the direct current bus connected with the target oil pumping unit at different moments in a preset time period are obtained, so that the electric data change information of the direct current bus in the preset time period is determined; determining the working state of the target pumping unit according to the electric data change information; if the working state of the target oil pumping unit is an uplink state, charging the direct current bus; and if the working state of the target oil pumping unit is a downlink state, collecting reverse flow electricity generated by the target oil pumping unit, storing the reverse flow electricity, and charging the direct current bus when the working state of the target oil pumping unit is an uplink state. The backflow electricity generated by the pumping unit is stored and utilized, so that the influence of backflow current on the power grid caused by the backflow current entering the power grid is avoided, and meanwhile, the electricity cost of the pumping unit is saved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
Fig. 1 is a schematic structural diagram of a power supply device of an oil pumping unit in an oil field according to an embodiment of the present application;
fig. 2 is a flowchart of a power supply method of an oil pumping unit in an oil field according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, an embodiment of the present application provides a power supply device of an oil pumping unit in an oil field, including: the CPU main control unit, the voltage sampling circuit, the current sampling circuit, the first IGBT unit, the second IGBT unit, the DC-DC power supply, the preset capacitor and the capacitor management unit;
The CPU main control unit is connected to a direct current bus connected with the target pumping unit through the voltage sampling circuit and the current sampling circuit respectively, the CPU main control unit is respectively connected with the first IGBT unit and the second IGBT unit in a data mode, the CPU main control unit is connected with the preset capacitor through the capacitor management unit, the preset capacitor is connected to the direct current bus connected with the target pumping unit through the DC-DC power supply and the second IGBT unit, and the preset capacitor is connected to the direct current bus connected with the target pumping unit through the first IGBT unit.
The CPU main control unit is respectively connected to a direct current bus connected with the target pumping unit through the voltage sampling circuit and the current sampling circuit, the CPU main control unit is respectively connected with the first IGBT unit and the second IGBT unit in a data mode, the CPU main control unit is connected with the preset capacitor through the capacitor management unit, the preset capacitor is connected to the direct current bus connected with the target pumping unit through the DC-DC power supply and the second IGBT unit, and the preset capacitor is connected to the direct current bus connected with the target pumping unit through the first IGBT unit. The backflow electricity generated by the pumping unit is stored and utilized, so that the influence of backflow current on the power grid caused by the backflow current entering the power grid is avoided, and meanwhile, the electricity cost of the pumping unit is saved.
In one possible embodiment, the apparatus further comprises: the pre-charging unit, the input of pre-charging unit is connected direct current busbar, the output of pre-charging unit with predetermine the electric capacity and be connected, pre-charging unit includes third IGBT unit and pre-charging circuit, third IGBT unit with CPU master control unit data connection, pre-charging circuit with predetermine the electric capacity electricity and be connected, the pre-charging way passes through third IGBT unit with direct current busbar is connected.
And the pre-charging circuit is connected with the bus and the preset capacitor through the resistor and the third IGBT unit, and the third IGBT unit is disconnected after the electricity of the preset capacitor is charged to a certain value.
For example, if the target pumping unit is in an uplink state when started, that is, when no reverse current generated by the pumping unit is opposite to a preset capacitor, in order to ensure normal operation of the uplink state of the target pumping unit, the preset capacitor needs to be precharged, that is, the preset capacitor is charged by using the direct current bus through the precharge circuit.
In one possible embodiment, the apparatus further comprises: and the discharge loop is arranged between the first IGBT unit and the direct current bus.
The discharging loop is formed by a resistor and a diode, the discharging loop is respectively connected with a bus and a preset capacitor, when the bus has power requirements, the bus voltage can be lowered, and at the moment, the preset capacitor is higher than the bus, and can be discharged back to the bus through the diode.
In one possible implementation, the preset capacitor adopts a mixed structure of a lithium-ion battery and a capacitor.
The preset capacitance is obtained by mixing materials according to material levels, and the model comprises 4.2V 15000F 4.2F10600F and the like.
On the other hand, as shown in fig. 2, the application also provides a power supply method of the oil pumping unit in the oil field, which is applied to the power supply device of the oil pumping unit in the oil field, and comprises the following steps:
S101, the CPU main control unit acquires electric data of a direct current bus connected with a target pumping unit at different moments in a preset time period through the voltage sampling circuit and the current sampling circuit, wherein the electric data comprises current data and voltage data, and then the CPU main control unit determines electric data change information of the direct current bus in the preset time period;
S102, the CPU main control unit determines the working state of the target pumping unit according to the electric data change information;
s103, if the working state of the target oil pumping unit is an uplink state, the CPU main control unit controls the first IGBT unit and the capacitor management unit to release electric energy stored by the preset capacitor, and the direct current bus is charged;
And S104, if the working state of the target pumping unit is a downlink state, the CPU main control unit controls the second IGBT unit and the capacitance management unit to collect reverse flow generated by the target pumping unit, and stores the reverse flow into the DC-DC power supply and the preset capacitance, wherein the stored reverse flow is used for charging the direct current bus when the working state of the target pumping unit is an uplink state.
In one possible implementation manner, the step of determining the working state of the target pumping unit according to the electrical data change information includes:
identifying voltage lifting data in the electric data change information, and determining an uplink state of the working state of the target pumping unit if the voltage lifting data reach a first threshold value, wherein the first threshold value is a boosting threshold value;
and if the voltage rise and fall data reach a second threshold, determining a downlink state of the working state of the target pumping unit, wherein the second threshold is a voltage reduction threshold.
In one possible implementation manner, the step of discharging the electric energy stored in the preset capacitor and charging the dc bus includes:
Identifying current change data in the electric data change information, and determining energy change of the transmission energy of the direct current bus in a preset time period according to the voltage rise and fall data;
And determining the electric energy release amount of the preset capacitor based on the energy change amount, and further completing the charging of the direct current bus.
When the kowtow machine descends, the bus voltage rises from about 580V to about 630 to 650 due to the generation of reverse power generated by the gravitational potential energy relation, and is charged into the super capacitor through the DCDC, when the kowtow machine ascends, the bus voltage can be reduced to about 500 to 520 due to the power requirement, and at the moment, the power of the super capacitor is higher than the bus voltage and can be discharged into the bus through the discharge loop;
In one possible embodiment, the method further comprises:
And when the energy variation is larger than the maximum storage amount of the preset capacitor, controlling the DC-DC power supply to charge the preset capacitor, wherein the charge amount of the DC-DC power supply for charging the preset capacitor is equal to the difference value of the energy variation minus the maximum storage amount of the preset capacitor.
In one possible implementation, an embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements: acquiring electric data of a direct current bus connected with a target oil pumping unit at different moments in a preset time period, and further determining electric data change information of the direct current bus in the preset time period; determining the working state of the target pumping unit according to the electric data change information; if the working state of the target oil pumping unit is an uplink state, charging the direct current bus; and if the working state of the target oil pumping unit is a downlink state, collecting reverse flow electricity generated by the target oil pumping unit, storing the reverse flow electricity, and charging the direct current bus when the working state of the target oil pumping unit is an uplink state.
The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It will be appreciated by those of ordinary skill in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device, or distributed over a network of computing devices, or they may alternatively be implemented in program code executable by a computer device, such that they are stored in a memory device and executed by the computing device, or they may be separately fabricated as individual integrated circuit modules, or multiple modules or steps within them may be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (5)
1. A power supply device for an oilfield pumping unit, comprising: the CPU main control unit, the voltage sampling circuit, the current sampling circuit, the first IGBT unit, the second IGBT unit, the DC-DC power supply, the preset capacitor and the capacitor management unit;
The CPU main control unit is respectively connected to a direct current bus connected with the target pumping unit through the voltage sampling circuit and the current sampling circuit, the CPU main control unit is respectively in data connection with the first IGBT unit and the second IGBT unit, the CPU main control unit is connected with the preset capacitor through the capacitor management unit, the preset capacitor is connected to the direct current bus connected with the target pumping unit through the DC-DC power supply and the second IGBT unit, the preset capacitor is connected to the direct current bus connected with the target pumping unit through the first IGBT unit, and the preset capacitor adopts a mixed structure of a lithium electronic battery and a capacitor;
the power supply device further includes: the input end of the pre-charging unit is connected with the direct current bus, the output end of the pre-charging unit is connected with the preset capacitor, the pre-charging unit comprises a third IGBT unit and a pre-charging circuit, the third IGBT unit is in data connection with the CPU main control unit, the pre-charging circuit is electrically connected with the preset capacitor, and the pre-charging circuit is connected with the direct current bus through the third IGBT unit;
the power supply device further includes: and the discharge loop is arranged between the first IGBT unit and the direct current bus.
2. A power supply method for an oilfield pumping unit, applied to the power supply device of the oilfield pumping unit as defined in claim 1, comprising:
the CPU main control unit acquires electric data of a direct current bus connected with a target pumping unit at different moments in a preset time period through the voltage sampling circuit and the current sampling circuit, wherein the electric data comprises current data and voltage data, and then the CPU main control unit determines electric data change information of the direct current bus in the preset time period;
the CPU main control unit determines the working state of the target pumping unit according to the electric data change information; if the working state of the target oil pumping unit is an uplink state, the CPU main control unit controls the first IGBT unit and the capacitor management unit to release the electric energy stored by the preset capacitor and charge the direct current bus;
And if the working state of the target oil pumping unit is a downlink state, the CPU main control unit controls the second IGBT unit and the capacitance management unit to collect reverse current generated by the target oil pumping unit, and stores the reverse current into the DC-DC power supply and the preset capacitance, wherein the stored reverse current is used for charging the direct current bus when the working state of the target oil pumping unit is an uplink state.
3. The power supply method of an oilfield pumping unit according to claim 2, wherein the step of determining the operating state of the target pumping unit according to the electrical data change information comprises:
identifying voltage lifting data in the electric data change information, and determining an uplink state of the working state of the target pumping unit if the voltage lifting data reach a first threshold value, wherein the first threshold value is a boosting threshold value;
and if the voltage rise and fall data reach a second threshold, determining a downlink state of the working state of the target pumping unit, wherein the second threshold is a voltage reduction threshold.
4. The power supply method of the oilfield pumping unit according to claim 3, wherein the step of discharging the electric energy stored in the preset capacitor and charging the dc bus includes:
Identifying current change data in the electric data change information, and determining energy change of the transmission energy of the direct current bus in a preset time period according to the voltage rise and fall data;
And determining the electric energy release amount of the preset capacitor based on the energy change amount, and further completing the charging of the direct current bus.
5. The method of powering an oilfield pumping unit of claim 4, further comprising:
And when the energy variation is larger than the maximum storage amount of the preset capacitor, controlling the DC-DC power supply to charge the preset capacitor, wherein the charge amount of the DC-DC power supply for charging the preset capacitor is equal to the difference value of the energy variation minus the maximum storage amount of the preset capacitor.
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| CN202310882442.2A CN116632877B (en) | 2023-07-19 | 2023-07-19 | Power supply device and power supply method of oil field pumping unit |
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| CN202310882442.2A CN116632877B (en) | 2023-07-19 | 2023-07-19 | Power supply device and power supply method of oil field pumping unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204402434U (en) * | 2014-12-02 | 2015-06-17 | 南阳防爆集团电气系统工程有限公司 | A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device |
| 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 |
| CN209016721U (en) * | 2018-12-05 | 2019-06-21 | 陕西安控科技有限公司 | A kind of Ultracapacitor Energy Storage based on conventional pumping unit |
| CN213585215U (en) * | 2020-10-22 | 2021-06-29 | 中国石油化工股份有限公司 | High-frequency isolation capacitor energy storage circuit for oil pumping unit |
| CN216086233U (en) * | 2021-10-29 | 2022-03-18 | 成都星联芯通科技有限公司 | Super capacitor charging and discharging circuit and system |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204402434U (en) * | 2014-12-02 | 2015-06-17 | 南阳防爆集团电气系统工程有限公司 | A kind of pumping unit system with super capacitor energy-storage type frequency converting and energy saving device |
| 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 |
| CN209016721U (en) * | 2018-12-05 | 2019-06-21 | 陕西安控科技有限公司 | A kind of Ultracapacitor Energy Storage based on conventional pumping unit |
| CN213585215U (en) * | 2020-10-22 | 2021-06-29 | 中国石油化工股份有限公司 | High-frequency isolation capacitor energy storage circuit for oil pumping unit |
| CN216086233U (en) * | 2021-10-29 | 2022-03-18 | 成都星联芯通科技有限公司 | Super capacitor charging and discharging circuit and system |
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| CN116632877A (en) | 2023-08-22 |
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