CN117117813A - Common DC bus control system for multiple pumping units in Paizi Well - Google Patents
Common DC bus control system for multiple pumping units in Paizi Well Download PDFInfo
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- CN117117813A CN117117813A CN202311119208.0A CN202311119208A CN117117813A CN 117117813 A CN117117813 A CN 117117813A CN 202311119208 A CN202311119208 A CN 202311119208A CN 117117813 A CN117117813 A CN 117117813A
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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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
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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
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
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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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
- H02J1/106—Parallel operation of DC sources for load balancing, symmetrisation, or sharing
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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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/14—Balancing the load in a network
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- H02J7/855—
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- H02J7/865—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor
- H02P3/12—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor by short-circuit or resistive braking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
- H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor by short-circuit or resistive braking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
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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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Stopping Of Electric Motors (AREA)
- Inverter Devices (AREA)
Abstract
本发明公开了排子井多台抽油机共直流母线控制系统，属于石油开采技术领域，包括模式选择模块、电能检测模块、制动消耗模块、电能存储模块、电能输出转换模块；本发明是通过设置的制动消耗模块，能够根据选择将立式抽油机电机产生的电能通过制动电阻热消散的方式消耗，并通过散热组件加速热消散速度，还通过设置的电能存储模块，能够根据选择将立式抽油机电机产生的电能通过超级电容器存储起来，解决了抽油机不平衡的问题，避免回馈单元直接将回收电能输入电网引起的电网波动，提高回收电能的利用率。
The invention discloses a common DC bus control system for multiple pumping units in Paizi Well, which belongs to the technical field of oil extraction and includes a mode selection module, an electric energy detection module, a braking consumption module, an electric energy storage module, and an electric energy output conversion module; the invention is Through the set braking consumption module, the electric energy generated by the vertical oil pumping unit motor can be consumed through the heat dissipation of the braking resistor according to the choice, and the heat dissipation speed can be accelerated through the heat dissipation component. Through the set electric energy storage module, the electric energy generated by the vertical oil pumping unit motor can be consumed according to the selection. Choosing to store the electric energy generated by the vertical pumping unit motor through supercapacitors solves the problem of unbalanced pumping units, avoids grid fluctuations caused by the feedback unit directly inputting the recovered electric energy into the grid, and improves the utilization rate of recovered electric energy.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation, in particular to a common direct current bus control system for a plurality of pumping units of a drain well.
Background
The pumping unit is a kind of machinery for exploiting petroleum, it is divided into beam pumping unit and no beam pumping unit, pumping unit and well pump the same principle, pump oil up through the pumping action of a piston tie rod (sucker rod), then send away through the buried pipeline, the only difference is that the tie rod acts through a motor to drive, there are many forms in the pumping unit, generally common have a large sector iron block and move back and forth, also have the linear motor to drive, the energy-conserving effectually but the actual use cost is higher, when the sucker rod falls, the electrical motor is not doing work, but also has the electrical energy to feed back the electric wire netting, the pumping unit of the oil field is comparatively more, these electrical energy fed back makes the electric wire netting produce the serious distortion;
the common direct current bus is mainly applied to a multi-motor transmission system and is used for controlling the high precision of a speed regulation system, meanwhile, the renewable energy generated in the braking process of the system is reasonably utilized and recovered, the common direct current bus adopts an independent rectifying/feedback device to provide a direct current power supply with certain power for the system, an inverter for speed regulation is directly connected to the direct current bus in a hanging manner, and when the system works in an electric state, the inverter obtains electric energy from the bus; when the system works in a power generation state, energy is directly fed back to a power grid through a bus and a feedback device, so that the purposes of saving energy, improving the running reliability of equipment, reducing the maintenance amount of the equipment, reducing the occupied area of the equipment and the like are achieved, and therefore, the common direct current bus can also be applied to a transmission system formed by a plurality of pumping units;
the sub-well can be understood as a plurality of pumping wells which are arranged in a arrayed manner, a plurality of pumping units run in the corresponding pumping wells simultaneously, and certain electric energy is generated (fed back) when the pumping units run, in the prior art, the electric energy is mainly fed back to a power grid directly by using a feedback unit, so that the power grid is easy to distort, power supply fluctuation is caused, and the problems are needed to be solved;
therefore, we propose a common direct current bus control system for a plurality of pumping units in a sub-well.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: how to solve the problem that in the prior art, the feedback unit is mainly used for directly feeding back electric energy to the power grid, so that the power grid is easy to generate distortion and power supply fluctuation is caused.
The invention solves the technical problems through the following technical scheme that the common direct current bus control system of a plurality of pumping units in a sub-well comprises a mode selection module, an electric energy detection module, a braking consumption module, an electric energy storage module and an electric energy output conversion module;
the mode selection module is used for determining a processing mode of electric energy generated by the motor of the vertical pumping unit according to the selection of an operator;
the electric energy detection module is used for detecting real-time current and voltage on the direct current bus and acquiring real-time current and voltage data;
the braking consumption module is used for selecting braking resistors with different resistance values to dissipate electric energy generated by the vertical pumping unit motor into the atmosphere through heat according to the selection result of the mode selection module;
the electric energy storage module is used for selecting different numbers and specifications of super capacitors according to the selection result of the mode selection module to store electric energy generated by the vertical pumping unit motor;
the electric energy output conversion module is used for rectifying, filtering, stabilizing voltage, transforming voltage and inverting the electric energy stored by the super capacitor in the electric energy storage module.
Further, in the mode selection module, the processing mode includes a consumption mode and a storage mode.
Further, the electric energy detection module comprises a current detection unit, a voltage detection unit and an analog-to-digital conversion unit; the current detection unit is used for detecting real-time current electric signals on the direct current bus and sending the real-time current electric signals on the direct current bus to the analog-to-digital conversion unit; the voltage detection unit is used for detecting real-time voltage electric signals on the direct current bus and sending the real-time voltage electric signals on the direct current bus to the analog-to-digital conversion unit; the analog-to-digital conversion unit is used for converting real-time current and voltage electric signals on the direct-current bus into real-time current and voltage data and sending the real-time current and voltage data to the braking consumption module and the electric energy storage module.
Further, the brake consumption module comprises a first result receiving unit, a brake resistor access selecting unit and a heat dissipation component selecting unit; the first result receiving unit is used for receiving a selection result according to the mode selection module, selecting whether to start the brake resistor access selection unit according to the selection result, starting the brake resistor access selection unit to perform resistance heat consumption operation when the selection result is a consumption mode, and not starting the brake resistor access selection unit to perform electric energy storage operation when the selection result is a storage mode; the brake resistor access selection unit is used for selecting the resistance value of the brake resistor after starting, and connecting the selected brake resistor with the direct current bus, namely accessing the circuit; the heat radiation component selection unit is used for selecting a heat radiation component with corresponding power according to the selected braking resistor.
Further, in the brake resistor access selection unit, the resistance value of the brake resistor is selected according to the magnitude of the real-time current and voltage data.
Still further, the electrical energy storage module comprises a second result receiving unit, a capacitance access selecting unit; the second result receiving unit is used for receiving the selection result of the mode selection module, selecting whether to start the capacitor access selection unit according to the selection result, starting the capacitor access selection unit to perform electric energy storage operation when the selection result is a storage mode, and starting the brake resistor access selection unit to perform resistance heat consumption operation when the selection result is a consumption mode; the capacitor access selection unit is used for selecting the number and the specification of the super capacitors after starting, and connecting the selected super capacitors with the direct current bus, namely accessing the circuit.
Furthermore, when the capacitor access selection unit selects the super capacitor, the super capacitor with set number and specification is selected according to the capacity of the single super capacitor, the real-time current and the voltage data.
Further, the electric energy output conversion module comprises a rectifying and filtering unit, a voltage stabilizing unit, a voltage transformation unit and an inversion unit; the rectifying and filtering unit is used for rectifying the electric energy stored by the super capacitor in the electric energy storage module by utilizing the rectifying bridge, converting the alternating current into direct current and filtering the direct current by utilizing the filtering circuit; the voltage stabilizing unit is used for stabilizing the voltage of the direct current obtained through the rectifying and filtering unit by utilizing the voltage stabilizing circuit; the voltage transformation unit is used for transforming the regulated direct current by using a transformer according to the type and rated voltage of the load, and converting the voltage into the rated voltage of the load; the inversion unit is used for performing inversion and filtering treatment on the direct current processed by the rectification filtering unit by using an inverter according to the type and rated voltage of the load, and converting the direct current into alternating current available for the load.
Further, in the power output conversion module, when the known load type is a direct current load and the rated voltage of the load is high, the voltage of the stabilized direct current is converted into the rated voltage of the load by using a transformer to perform voltage transformation treatment; when the load type is known as an alternating current load and the rated voltage of the load, the direct current processed by the rectifying and filtering unit is subjected to inversion and filtering processing by the inverter, and is converted into alternating current available for the load.
Compared with the prior art, the invention has the following advantages:
according to the invention, through the arranged brake consumption module, the electric energy generated by the vertical pumping unit motor can be consumed in a mode of dissipating heat through the brake resistor according to selection, the heat dissipation speed is accelerated through the heat dissipation assembly, and the electric energy generated by the vertical pumping unit motor can be stored through the super capacitor according to selection through the arranged electric energy storage module, so that the problem of unbalance of the pumping unit is solved, the feedback unit is prevented from directly inputting the recovered electric energy into the power grid to cause power grid fluctuation, and the utilization rate of the recovered electric energy is improved.
Drawings
Fig. 1 is a schematic structural diagram of a common dc bus control system for multiple pumping units in a sub-well in an embodiment of the present invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
As shown in fig. 1, this embodiment provides a technical solution: the direct current bus control system comprises an electric energy detection module, a braking consumption module, an electric energy storage module, an electric energy output conversion module and a mode selection module;
in this embodiment, the electric energy detection module is configured to detect real-time current and voltage on the dc bus, obtain real-time current and voltage data, and send the real-time current and voltage data to the brake consumption module and the electric energy storage module.
Specifically, the electric energy detection module comprises a current detection unit, a voltage detection unit and an analog-to-digital conversion unit; the current detection unit is used for detecting the real-time current electric signal on the direct current bus and sending the real-time current electric signal on the direct current bus to the analog-to-digital conversion unit; the voltage detection unit is used for detecting the real-time voltage electric signal on the direct current bus and sending the real-time voltage electric signal on the direct current bus to the analog-to-digital conversion unit; the analog-to-digital conversion unit is used for converting real-time current and voltage electric signals on the direct-current bus into real-time current and voltage data and sending the real-time current and voltage data to the brake consumption module and the electric energy storage module.
In this embodiment, the brake consumption module is configured to select, according to a selection result of the mode selection module, to dissipate, through heat, electric energy generated by the motor of the vertical pumping unit through brake resistors with different resistance values to the atmosphere.
Specifically, the brake consumption module comprises a first result receiving unit, a brake resistor access selecting unit and a heat dissipation component selecting unit; the first result receiving unit is used for receiving a selection result according to the mode selection module, selecting whether to start the brake resistor access selection unit according to the selection result, starting the brake resistor access selection unit to perform resistance heat consumption work when the selection result is a consumption mode, and not starting the brake resistor access selection unit to perform electric energy storage work when the selection result is a storage mode; the brake resistor access selection unit is used for selecting the resistance value of the brake resistor after starting, and connecting the selected brake resistor with the direct current bus, namely accessing the circuit; the heat radiation component selecting unit is used for selecting a heat radiation component with corresponding power according to the selected braking resistor so as to ensure the heat radiation speed. Through the braking consumption module, the electric energy generated by the motor of the vertical pumping unit can be consumed in a mode of dissipating heat through the braking resistor according to selection, and the heat dissipation speed is accelerated through the heat dissipation assembly.
More specifically, the brake resistor access selection unit selects the resistance value of the brake resistor according to the magnitude of the real-time current and voltage data.
More specifically, the heat dissipation component is a heat dissipation fan.
In this embodiment, the electric energy storage module is configured to select, according to a selection result of the mode selection module, different numbers and specifications of super capacitors to store electric energy generated by the vertical pumping unit motor.
Specifically, the electric energy storage module comprises a second result receiving unit and a capacitor access selecting unit; the second result receiving unit is used for receiving the selection result of the mode selection module, selecting whether to start the capacitor access selection unit according to the selection result, starting the capacitor access selection unit to perform electric energy storage operation when the selection result is a storage mode, and starting the brake resistor access selection unit to perform resistance heat consumption operation when the selection result is a consumption mode; the capacitor access selection unit is used for selecting the number and the specification of the super capacitors after starting, and connecting the selected super capacitors with the direct current bus, namely accessing the circuit. Through the electric energy storage module that sets up, can be according to the electric energy that the vertical beam-pumping unit motor produced through supercapacitor storage.
More specifically, when the capacitor access selection unit selects the super capacitor, the super capacitor with set number and specification is selected according to the capacity of the single super capacitor, the real-time current and the voltage data.
In this embodiment, the electric energy output conversion module is configured to perform rectifying filtering, voltage stabilizing, voltage transformation, and inversion processing on the electric energy stored in the supercapacitor in the electric energy storage module.
Specifically, the electric energy output conversion module comprises a rectifying and filtering unit, a voltage stabilizing unit, a transformation unit and an inversion unit; the rectifying and filtering unit is used for rectifying the electric energy stored by the super capacitor in the electric energy storage module by utilizing the rectifying bridge, converting the alternating current into direct current and filtering the direct current by utilizing the filtering circuit; the voltage stabilizing unit is used for stabilizing the voltage of the direct current obtained through the rectifying and filtering unit by utilizing the voltage stabilizing circuit; the voltage transformation unit is used for transforming the regulated direct current by using a transformer according to the type and rated voltage of the load, and converting the voltage into the rated voltage of the load; the inversion unit is used for performing inversion and filtering treatment on the direct current obtained by the rectifying and filtering unit by utilizing the inverter according to the type and rated voltage of the load, and converting the direct current into alternating current which can be used by the load.
Specifically, in the electric energy output conversion module, when the known load type is a direct current load and the rated voltage of the load is high, the voltage of the stabilized direct current is converted into the rated voltage of the load by using a transformer to perform voltage transformation treatment; when the load type is known as an alternating current load and the rated voltage of the load, the direct current processed by the rectifying and filtering unit is subjected to inversion and filtering processing by the inverter, and is converted into alternating current available for the load.
More specifically, in the present embodiment, the ac power specification obtained by inverting and filtering the dc power obtained by the rectifying and filtering unit by the inverter is 220V and 50Hz.
In this embodiment, the mode selection module is configured to determine, according to a selection of an operator, a processing mode of electric energy generated by the motor of the vertical pumping unit.
Specifically, in the mode selection module, the processing mode includes a consumption mode and a storage mode.
In summary, in the control system for the common direct current bus of the pumping units in the sub-well of the embodiment, the electric energy generated by the motor of the vertical pumping unit can be consumed through the braking resistor heat dissipation mode according to the selection through the set braking consumption module, the heat dissipation speed is accelerated through the heat dissipation assembly, and the electric energy generated by the motor of the vertical pumping unit can be stored through the super capacitor according to the selection through the set electric energy storage module, so that the unbalanced problem of the pumping unit is solved, the feedback unit is prevented from directly inputting the recovered electric energy into the power grid to cause power grid fluctuation, and the utilization rate of the recovered electric energy is improved.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. The direct current bus control system is characterized by comprising a mode selection module, an electric energy detection module, a braking consumption module, an electric energy storage module and an electric energy output conversion module;
the mode selection module is used for determining a processing mode of electric energy generated by the motor of the vertical pumping unit according to the selection of an operator;
the electric energy detection module is used for detecting real-time current and voltage on the direct current bus and acquiring real-time current and voltage data;
the braking consumption module is used for selecting braking resistors with different resistance values to dissipate electric energy generated by the vertical pumping unit motor into the atmosphere through heat according to the selection result of the mode selection module;
the electric energy storage module is used for selecting different numbers and specifications of super capacitors according to the selection result of the mode selection module to store electric energy generated by the vertical pumping unit motor;
the electric energy output conversion module is used for rectifying, filtering, stabilizing voltage, transforming voltage and inverting the electric energy stored by the super capacitor in the electric energy storage module.
2. The drain-well multiple pumping unit common-direct-current bus control system according to claim 1, wherein: in the mode selection module, the processing mode includes a consumption mode and a storage mode.
3. The drain-well multiple pumping unit common-direct-current bus control system according to claim 2, wherein: the electric energy detection module comprises a current detection unit, a voltage detection unit and an analog-to-digital conversion unit; the current detection unit is used for detecting real-time current electric signals on the direct current bus and sending the real-time current electric signals on the direct current bus to the analog-to-digital conversion unit; the voltage detection unit is used for detecting real-time voltage electric signals on the direct current bus and sending the real-time voltage electric signals on the direct current bus to the analog-to-digital conversion unit; the analog-to-digital conversion unit is used for converting real-time current and voltage electric signals on the direct-current bus into real-time current and voltage data and sending the real-time current and voltage data to the braking consumption module and the electric energy storage module.
4. The drain-well multiple pumping unit common-direct-current bus control system according to claim 3, wherein: the braking consumption module comprises a first result receiving unit, a braking resistor access selecting unit and a radiating component selecting unit; the first result receiving unit is used for receiving a selection result according to the mode selection module, selecting whether to start the brake resistor access selection unit according to the selection result, starting the brake resistor access selection unit to perform resistance heat consumption operation when the selection result is a consumption mode, and not starting the brake resistor access selection unit to perform electric energy storage operation when the selection result is a storage mode; the brake resistor access selection unit is used for selecting the resistance value of the brake resistor after starting, and connecting the selected brake resistor with the direct current bus, namely accessing the circuit; the heat radiation component selection unit is used for selecting a heat radiation component with corresponding power according to the selected braking resistor.
5. The drain-well multiple pumping unit common-direct-current bus control system according to claim 4, wherein: and the brake resistor access selection unit is used for selecting the resistance value of the brake resistor according to the sizes of the real-time current and voltage data.
6. The drain-well multiple pumping unit common-direct-current bus control system according to claim 4, wherein: the electric energy storage module comprises a second result receiving unit and a capacitor access selecting unit; the second result receiving unit is used for receiving the selection result of the mode selection module, selecting whether to start the capacitor access selection unit according to the selection result, starting the capacitor access selection unit to perform electric energy storage operation when the selection result is a storage mode, and starting the brake resistor access selection unit to perform resistance heat consumption operation when the selection result is a consumption mode; the capacitor access selection unit is used for selecting the number and the specification of the super capacitors after starting, and connecting the selected super capacitors with the direct current bus, namely accessing the circuit.
7. The drain-well multiple pumping unit common-direct-current bus control system according to claim 6, wherein: when the capacitor access selection unit selects the super capacitor, the super capacitor with set quantity and specification is selected according to the capacity of the single super capacitor, the real-time current and voltage data.
8. The drain-well multiple pumping unit common-direct-current bus control system according to claim 6, wherein: the electric energy output conversion module comprises a rectifying and filtering unit, a voltage stabilizing unit, a transformation unit and an inversion unit; the rectifying and filtering unit is used for rectifying the electric energy stored by the super capacitor in the electric energy storage module by utilizing the rectifying bridge, converting the alternating current into direct current and filtering the direct current by utilizing the filtering circuit; the voltage stabilizing unit is used for stabilizing the voltage of the direct current obtained through the rectifying and filtering unit by utilizing the voltage stabilizing circuit; the voltage transformation unit is used for transforming the regulated direct current by using a transformer according to the type and rated voltage of the load, and converting the voltage into the rated voltage of the load; the inversion unit is used for performing inversion and filtering treatment on the direct current processed by the rectification filtering unit by using an inverter according to the type and rated voltage of the load, and converting the direct current into alternating current available for the load.
9. The drain-well multiple pumping unit common-direct-current bus control system according to claim 8, wherein: in the electric energy output conversion module, when the known load type is a direct current load and the rated voltage of the load is high, the voltage of the stabilized direct current is converted into the rated voltage of the load by utilizing a transformer to perform voltage transformation treatment; when the load type is known as an alternating current load and the rated voltage of the load, the direct current processed by the rectifying and filtering unit is subjected to inversion and filtering processing by the inverter, and is converted into alternating current available for the load.
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| CN202311119208.0A CN117117813B (en) | 2023-09-01 | 2023-09-01 | Common DC bus control system for multiple pumping units in Paizi well |
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| CN202311119208.0A CN117117813B (en) | 2023-09-01 | 2023-09-01 | Common DC bus control system for multiple pumping units in Paizi well |
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| CN117117813B CN117117813B (en) | 2024-07-19 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201504219U (en) * | 2009-09-16 | 2010-06-09 | 刘培 | Energy-storage pumping unit power saving device with super capacitor |
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| US20180123384A1 (en) * | 2016-10-31 | 2018-05-03 | Keppel Offshore & Marine Technology Centre Pte Ltd | Power storage and supply method and system for a drilling rig |
| US20230077807A1 (en) * | 2021-09-10 | 2023-03-16 | Accenture Global Solutions Limited | Dynamically configuring an energy consuming system to improve energy efficiency |
| WO2023061561A1 (en) * | 2021-10-12 | 2023-04-20 | Hitachi Energy Switzerland Ag | Capacitor compensated thyristor controlled braking resistor |
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2023
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| CN201504219U (en) * | 2009-09-16 | 2010-06-09 | 刘培 | Energy-storage pumping unit power saving device with super capacitor |
| CN102751751A (en) * | 2012-04-24 | 2012-10-24 | 中国石油大学(北京) | Alternating current bus electronic control system of electric workover rig |
| CN103192724A (en) * | 2013-03-26 | 2013-07-10 | 郑州宇通客车股份有限公司 | Trolley bus power system and power-grid-connected operation method and power-grid-free operation method thereof |
| 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 |
| US20180123384A1 (en) * | 2016-10-31 | 2018-05-03 | Keppel Offshore & Marine Technology Centre Pte Ltd | Power storage and supply method and system for a drilling rig |
| US20230077807A1 (en) * | 2021-09-10 | 2023-03-16 | Accenture Global Solutions Limited | Dynamically configuring an energy consuming system to improve energy efficiency |
| WO2023061561A1 (en) * | 2021-10-12 | 2023-04-20 | Hitachi Energy Switzerland Ag | Capacitor compensated thyristor controlled braking resistor |
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| CN117117813B (en) | 2024-07-19 |
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