CN209881421U - Oil well area multi-source micro-grid power supply device system - Google Patents
Oil well area multi-source micro-grid power supply device system Download PDFInfo
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- CN209881421U CN209881421U CN201920968895.6U CN201920968895U CN209881421U CN 209881421 U CN209881421 U CN 209881421U CN 201920968895 U CN201920968895 U CN 201920968895U CN 209881421 U CN209881421 U CN 209881421U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The utility model discloses a regional multisource microgrid power supply unit system of oil well. The inlet end of the rectifying device is connected with the low-voltage side of the transformer, and the outlet end of the rectifying device is connected with the direct-current bus; one end of the direct current bus is connected with a wire outlet end of the rectifying device, and the other end of the direct current bus is connected with the inverter, the first voltage stabilizer, the second voltage stabilizer and the third voltage stabilizer; the inlet end of the inverter is connected with the direct current bus, and the outlet end of the inverter is connected with the oil well equipment to convert the direct current into alternating current used by the oil well equipment; the inlet end of the first voltage stabilizer is connected with the photovoltaic array, and the outlet end of the first voltage stabilizer is connected with the direct current bus to stabilize the voltage at 600V; the wire inlet end of the second voltage stabilizer is connected with the energy storage unit, and the wire outlet end of the second voltage stabilizer is connected with the direct current bus; and the inlet end of the third voltage stabilizer is connected with the wind power generation unit, the outlet end of the third voltage stabilizer is connected with the direct current bus, and alternating current generated by the wind power generation unit is converted into direct current to be output to the direct current bus for oil well equipment to use. The utility model discloses can reduce the electric energy loss, realize energy-concerving and environment-protective purpose.
Description
Technical Field
The utility model relates to an oil field electric power supply field especially relates to an oil well region multisource microgrid power supply unit system.
Background
At present, in conventional oil well power supply, 10- (6) KV power supply network is supplied to a single well after being subjected to voltage reduction by a transformer, one well generally corresponds to one transformer, the power supply mode of changing from one well to another causes a distribution line to be in dendritic radiation, branch lines are long, and the distribution transformer and a gram switch on the line have more contacts, so that the maintenance workload is large and the management is inconvenient. Because the starting impact of the alternating current asynchronous motor is large, the starting current is 5-7 times of the rated current, and a large margin must be reserved for the capacity of the transformer, the power factor is low during operation, and the reactive loss is large. The idle land around the oil well is more, and can not be effectively utilized. The existing oil well new energy devices (photovoltaic power generation, wind power generation unit power generation and energy storage devices) are supplied to an oil well in a grid-connected mode in a direct current-alternating current mode for use, and the oil well needs to go through the processes of inversion, rectification and inversion when using the part of electric energy, and the electric energy loss is high due to more conversion links.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a regional multisource microgrid power supply unit system of oil well can reduce the electric energy loss, realizes energy-conserving purpose.
In order to achieve the above object, the utility model provides a following scheme:
a multi-source microgrid power supply system for an oil well region, comprising: the photovoltaic power generation system comprises a transformer, a rectifying device, a direct current bus, an inverter, a first voltage stabilizer, a photovoltaic array, a second voltage stabilizer, an energy storage unit, a third voltage stabilizer and a wind power generation unit;
the high-voltage side of the transformer is connected with a commercial power grid, and the transformer is used for reducing 6/10KV voltage to 380V; the inlet end of the rectifying device is connected with the low-voltage side of the transformer, the outlet end of the rectifying device is connected with the direct-current bus, and the rectifying device is used for converting 380V alternating current into 560V direct current and outputting the 560V direct current to the direct-current bus; one end of the direct current bus is connected with a wire outlet end of the rectifying device, and the other end of the direct current bus is respectively connected with the inverter, the first voltage stabilizer, the second voltage stabilizer and the third voltage stabilizer; the inlet end of the inverter is connected with the direct current bus, the outlet end of the inverter is connected with oil well equipment, and the inverter is used for converting direct current into alternating current used by the oil well equipment; the inlet end of the first voltage stabilizer is connected with the photovoltaic array, the outlet end of the first voltage stabilizer is connected with the direct current bus, and the first voltage stabilizer is used for stabilizing the photovoltaic power generation voltage at direct current 600V; the wire inlet end of the second voltage stabilizer is connected with the energy storage unit, and the wire outlet end of the second voltage stabilizer is connected with the direct current bus; the inlet end of the third voltage stabilizer is connected with the wind power generation unit, the outlet end of the third voltage stabilizer is connected with the direct current bus, and the third voltage stabilizer is used for converting alternating current generated by the wind power generation unit into direct current to be output to the direct current bus for the oil well equipment to use.
Optionally, the method further includes: and one end of the high-voltage switch is connected with the high-voltage side of the transformer, and the other end of the high-voltage switch is connected with the commercial power grid.
Optionally, the rectifying device includes a filter device and an energy feedback device, a line inlet end of the filter device is connected to the low-voltage side of the transformer, a line outlet end of the filter device is connected to a line inlet end of the energy feedback device, and a line outlet end of the energy feedback device is connected to the dc bus; the filtering device is used for filtering harmonic waves generated by rectification, so that the total harmonic distortion rate meets the national standard; and the energy feedback device is used for returning redundant electric energy to the power grid to prevent the overvoltage from damaging the equipment when the voltage of the direct-current bus is detected to be higher than 700V.
Optionally, the photovoltaic array adopts a 300Wp polycrystalline silicon solar panel.
Optionally, the energy storage unit adopts a lithium iron phosphate battery.
Optionally, the first voltage stabilizer is a photovoltaic DC-DC voltage stabilizer.
Optionally, the second voltage stabilizer is an energy storage DC-DC voltage stabilizer.
Optionally, the third voltage stabilizer is a rectifying voltage stabilizer.
Optionally, the wind power generation unit adopts a fan.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a multisource microgrid power supply unit system in an oil well area, wherein the high-voltage side of a transformer is connected with a mains supply power grid, and the transformer is used for reducing 6/10KV voltage to 380V; the inlet end of the rectifying device is connected with the low-voltage side of the transformer, the outlet end of the rectifying device is connected with the direct-current bus, and the rectifying device is used for converting 380V alternating current into 560V direct current and outputting the 560V direct current to the direct-current bus; one end of the direct current bus is connected with a wire outlet end of the rectifying device, and the other end of the direct current bus is connected with the inverter, the first voltage stabilizer, the second voltage stabilizer and the third voltage stabilizer; the inlet end of the inverter is connected with the direct current bus, and the outlet end of the inverter is connected with the oil well equipment and used for converting direct current into alternating current used by the oil well equipment; the inlet end of the first voltage stabilizer is connected with the photovoltaic array, and the outlet end of the first voltage stabilizer is connected with the direct current bus and used for stabilizing the photovoltaic power generation voltage at direct current 600V; the wire inlet end of the second voltage stabilizer is connected with the energy storage unit, and the wire outlet end of the second voltage stabilizer is connected with the direct current bus; the inlet end of the third voltage stabilizer is connected with the wind power generation unit, and the outlet end of the third voltage stabilizer is connected with the direct current bus and used for converting alternating current generated by the wind power generation unit into direct current to be output to the direct current bus for oil well equipment, so that the electric energy loss is reduced, and the purposes of energy conservation and environmental protection are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is the structural composition diagram of the multi-source micro-grid power supply system of the oil well region of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a regional multisource microgrid power supply unit system of oil well can reduce the electric energy loss, realizes energy-conserving purpose.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the structural composition diagram of the multi-source micro-grid power supply system of the oil well region of the utility model. As shown in fig. 1, a multi-source micro-grid power supply system for an oil well region includes: the system comprises a transformer 1, a rectifying device 2, a direct current bus 3, an inverter 4, a first voltage stabilizer 5, a photovoltaic array 6, a second voltage stabilizer 7, an energy storage unit 8, a third voltage stabilizer 9 and a wind power generation unit 10;
the model of the transformer 1 is S13-160, the model of the rectifying device 2 is ZSD-Z-160, the model of the direct current bus 3 is YJLV22-1-3 + 50+1 + 25, the model of the inverter 4 is ZSD-N-37, the model of the first voltage stabilizer 5 is ZSD-W-60, the photovoltaic array 6 is polycrystal 300wp, the model of the second voltage stabilizer 7 is ZSD-W-60, the model of the energy storage unit 8 is ZSD-C-10, the model of the third voltage stabilizer 9 is ZSD-W-15, and the wind power generation unit 10 is a 15kW vertical wind power generator.
The high-voltage side of the transformer 1 is connected with a mains supply power grid through a high-voltage switch, and the transformer 1 is used for reducing 6/10KV voltage to 380V; the inlet end of the rectifying device 2 is connected with the low-voltage side of the transformer 1, the outlet end of the rectifying device 2 is connected with the direct current bus 3, and the rectifying device 2 is used for converting 380V alternating current into 560V direct current and outputting the 560V direct current to the direct current bus 3; one end of the direct current bus 3 is connected with a wire outlet end of the rectifying device 2, and the other end of the direct current bus 3 is respectively connected with the inverter 4, the first voltage stabilizer 5, the second voltage stabilizer 7 and the third voltage stabilizer 9; the inlet end of the inverter 4 is connected with the direct current bus 3, the outlet end of the inverter 4 is connected with the oil well equipment 11, the inverter 4 is used for converting direct current into alternating current used by the oil well equipment 11, controlling the running state of the oil well equipment 11 and feeding back electric energy fed back by the backward power generation of the oil well equipment 11 to the direct current bus 3;
the first voltage stabilizer 5 adopts a photovoltaic DC-DC voltage stabilizer, the wire inlet end of the photovoltaic DC-DC voltage stabilizer is connected with the photovoltaic array 6, the wire outlet end of the photovoltaic DC-DC voltage stabilizer is connected with the direct current bus 3, and the photovoltaic DC-DC voltage stabilizer is used for stabilizing the photovoltaic power generation voltage at 600V, and has the functions of maximum power tracking, island protection and the like; the photovoltaic array 6 adopts a photovoltaic panel, and the photovoltaic panel adopts a 300Wp polycrystalline silicon solar panel to convert light energy into electric energy for supplying to the oil well equipment 11;
the second voltage stabilizer 7 adopts an energy storage DC-DC voltage stabilizer, the incoming line end of the energy storage DC-DC voltage stabilizer is connected with the energy storage unit, and the outgoing line end of the energy storage DC-DC voltage stabilizer is connected with the direct current bus 3; the working modes of the energy storage DC-DC voltage stabilizer are as follows:
when the voltage of the direct current bus 3 is more than 690V, the energy storage DC-DC voltage stabilizer stores the electric energy in the direct current bus into the energy storage unit 8; when the voltage of the direct current bus 3 drops to 450V instantly, the DC-DC voltage stabilizer transmits the electric energy in the energy storage unit 8 to the direct current bus 3 to be supplied to the oil well equipment 11 for use, and the equipment is kept to operate; when the voltage of the direct current bus 3 is in a normal operation interval of DC450V-700V and at the peak electricity price, the voltage stabilizer transmits the electric energy stored by the energy storage unit 8 to the direct current bus 3 for the oil well equipment 11 to use; when the voltage of the direct current bus 3 is in a DC450V-700V normal operation interval and at a valley power price, the voltage stabilizer transmits the electric energy on the direct current bus 3 to the energy storage unit 8 for storage; the energy storage unit 8 adopts an energy storage battery, and the energy storage battery is a lithium iron phosphate battery;
the third voltage stabilizer 9 adopts a rectification voltage stabilizer, the incoming line end of the rectification voltage stabilizer is connected with the wind power generation unit 10, the outgoing line end of the rectification voltage stabilizer is connected with the direct current bus 3, and the third voltage stabilizer 9 is used for converting alternating current sent by the wind power generation unit 10 into direct current to be output to the direct current bus 3 for the oil supply well equipment 11. The wind power generation unit 10 adopts a fan, and the wind power generation unit 10 is used for converting wind energy into electric energy to be supplied to the oil well equipment 11 for use.
The rectifying device 2 comprises a filter device and an energy feedback device, wherein the inlet end of the filter device is connected with the low-voltage side of the transformer 1, the outlet end of the filter device is connected with the inlet end of the energy feedback device, and the outlet end of the energy feedback device is connected with the direct current bus 3; the filtering device is used for filtering harmonic waves generated by rectification, so that the total harmonic distortion rate meets the national standard; and the energy feedback device is used for returning redundant electric energy to the power grid to prevent the overvoltage from damaging the equipment when the voltage of the direct-current bus is detected to be higher than 700V.
The existing multisource microgrid power supply device system in an oil well area has the following problems:
the existing oil well control cabinet is low in informatization degree and inconvenient in parameter adjustment, and remote parameter adjustment cannot be performed even after informatization transformation; the average load rate of the oil well transformer is low, and the phenomenon of large horse-drawn trolley is prominent; the oil well motor has low power factor, poor reactive compensation effect and high loss of a distribution line; the frequency conversion and speed regulation of the oil well are applied more, and the quality of electric energy at the side of a power grid is deteriorated; the oil well distribution line has more electric facilities and large maintenance workload; the conversion link from a power generation end to a power receiving end in the existing new energy grid-connected mode is more and higher in electric energy loss; the voltage at the high-voltage side has the phenomena of fluctuation and flicker, so that the production is influenced by the stop of the operation of an oil well; the oil well has the phenomenon of reverse power generation during operation, the generated phase and frequency can not meet the power quality requirement of a power grid, the power grid is polluted, and certain energy waste is caused.
The utility model discloses a regional multisource microgrid power supply unit system of oil well adopts intelligent inverter control cabinet, collects data such as field load, displacement, temperature, pressure electricity parameter in real time, uploads to control center through the mode of wireless transmission and carries out analysis and diagnosis and transfers the parameter for oil well production and provide the reference, and the control center sends the parameter of transferring instruction to intelligent inverter control cabinet through the wireless network when the oil well needs to transfer the parameter and realizes long-range parameter of transferring; the problem of current oil well control cabinet information ization degree low transfer join in marriage inconveniently, can not carry out remote parameter adjustment even after the information ization transformation is still solved.
The utility model discloses a multisource microgrid power supply unit system in the oil well area reduces the starting current of the motor by adopting a frequency conversion soft start mode, thereby reducing the capacity of the oil well transformer; meanwhile, a transformer is used in a plurality of oil wells in a centralized power supply mode, the oil wells and the transformer are controlled by controlling the inversion control cabinet, the load in the system is relatively balanced due to the tide between the oil wells, the number of the transformers is reduced, and the problems that the average load rate of the oil well transformers is low, the phenomenon of large horse-drawn trolleys is prominent, the electric facilities of oil well distribution lines are more, and the maintenance workload is large are solved.
The utility model discloses a regional multisource microgrid power supply unit system of oil well changes into DC power supply's mode with fairing leading-out terminal to oil well switch board incoming line terminal, makes the transmission that has no reactive component in the direct current circuit and direct current voltage be higher than alternating voltage, has reduced the energy loss in the distribution lines; the system is subjected to centralized compensation by arranging a reactive compensation device in the rectifying device, so that the power factor of the system is increased to be more than 0.9; the problems of low power factor, poor reactive compensation effect and high loss of a distribution line of an oil well motor are solved.
The utility model discloses a regional multisource microgrid power supply unit system of oil well administers the system harmonic through built-in APF filter equipment of fairing, and the total harmonic distortion rate of voltage under the arbitrary load factor after administering is below 3.5%, and the total harmonic distortion rate of current is below 12%, is far superior to GB/T14549 and 1993 requirement to the harmonic distortion rate; the problems that frequency conversion and speed regulation of an oil well are applied more and the quality of electric energy at the side of a power grid is poor are solved.
The utility model discloses a regional multisource microgrid power supply unit system of oil well carries out DC-DC-AC's conversion through photovoltaic to direct current bus, energy storage unit to the end of receiving electricity, and wind power generation carries out AC-DC-AC's conversion to the end of receiving electricity, has changed in the past photovoltaic and energy storage to end of receiving electricity DC-AC-DC-AC, wind power generation to the process of end of receiving electricity AC-DC-AC, has reduced the contravariant and the rectification link of photovoltaic and energy storage, has reduced the rectification of wind power generation, the link of contravariant rectification again; the problem of current new forms of energy mode grid-connected electricity generation end to the conversion link of receiving end more lead to the electric energy loss higher is solved.
The utility model discloses a regional multisource microgrid power supply unit system of oil well, when high-pressure side voltage takes place undulant or flicker, the electric energy release that the energy storage unit will store rapidly maintains direct current bus voltage stable, ensures that the beam-pumping unit does not take place to shut down, has solved high-pressure side voltage and has had undulant and flicker phenomenon, causes the problem that oil well shut down influences production.
When the oil well reversely generates electricity, the reversed electric energy is fed back to the direct current bus through a freewheeling diode of the inverter to be used by other oil wells, when the reversed electric energy is more, the voltage of the direct current bus is increased to DC690V, the energy storage unit starts to charge, and when the voltage of the direct current bus is increased to DC700V, the energy feedback unit in the rectifying device starts to work, and the redundant electric energy is fed back to the alternating current power grid after inversion filtering; the problem of there is the phenomenon of generating electricity backward when oil well operation, the phase place and the frequency of its electricity generation can not reach the electric energy quality requirement of electric wire netting, not only can pollute the electric wire netting, cause certain energy waste moreover is solved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the device and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. A regional multisource microgrid power supply unit system of oil well, its characterized in that includes: the photovoltaic power generation system comprises a transformer, a rectifying device, a direct current bus, an inverter, a first voltage stabilizer, a photovoltaic array, a second voltage stabilizer, an energy storage unit, a third voltage stabilizer and a wind power generation unit;
the high-voltage side of the transformer is connected with a commercial power grid, and the transformer is used for reducing 6/10KV voltage to 380V; the inlet end of the rectifying device is connected with the low-voltage side of the transformer, the outlet end of the rectifying device is connected with the direct-current bus, and the rectifying device is used for converting 380V alternating current into 560V direct current and outputting the 560V direct current to the direct-current bus; one end of the direct current bus is connected with a wire outlet end of the rectifying device, and the other end of the direct current bus is respectively connected with the inverter, the first voltage stabilizer, the second voltage stabilizer and the third voltage stabilizer; the inlet end of the inverter is connected with the direct current bus, the outlet end of the inverter is connected with oil well equipment, and the inverter is used for converting direct current into alternating current used by the oil well equipment; the inlet end of the first voltage stabilizer is connected with the photovoltaic array, the outlet end of the first voltage stabilizer is connected with the direct current bus, and the first voltage stabilizer is used for stabilizing the photovoltaic power generation voltage at direct current 600V; the wire inlet end of the second voltage stabilizer is connected with the energy storage unit, and the wire outlet end of the second voltage stabilizer is connected with the direct current bus; the inlet end of the third voltage stabilizer is connected with the wind power generation unit, the outlet end of the third voltage stabilizer is connected with the direct current bus, and the third voltage stabilizer is used for converting alternating current generated by the wind power generation unit into direct current to be output to the direct current bus for the oil well equipment to use.
2. The well area multi-source microgrid power supply system of claim 1, further comprising: and one end of the high-voltage switch is connected with the high-voltage side of the transformer, and the other end of the high-voltage switch is connected with the commercial power grid.
3. The multi-source microgrid power supply system of an oil well area according to claim 1, characterized in that the rectifying device comprises a filter device and an energy feedback device, wherein a wire inlet end of the filter device is connected with a low-voltage side of the transformer, a wire outlet end of the filter device is connected with a wire inlet end of the energy feedback device, and a wire outlet end of the energy feedback device is connected with the direct current bus; the filtering device is used for filtering harmonic waves generated by rectification, so that the total harmonic distortion rate meets the national standard; and the energy feedback device is used for returning redundant electric energy to the power grid to prevent the overvoltage from damaging the equipment when the voltage of the direct-current bus is detected to be higher than 700V.
4. The well area multi-source microgrid power supply system of claim 1, wherein the photovoltaic array employs 300Wp of polycrystalline silicon solar panels.
5. The oil well area multi-source microgrid power supply device system as claimed in claim 1, characterized in that the energy storage unit is a lithium iron phosphate battery.
6. The well area multi-source microgrid power supply system of claim 1, wherein the first voltage stabilizer is a photovoltaic DC-DC voltage stabilizer.
7. The well area multi-source microgrid power supply system of claim 1, wherein the second voltage stabilizer is an energy storage DC-DC voltage stabilizer.
8. The well area multi-source microgrid power supply system of claim 1, wherein the third voltage stabilizer is a rectifier voltage stabilizer.
9. The oil well area multi-source microgrid power supply device system of claim 1, characterized in that a fan is adopted as the wind power generation unit.
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| CN201920968895.6U CN209881421U (en) | 2019-06-26 | 2019-06-26 | Oil well area multi-source micro-grid power supply device system |
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| CN201920968895.6U CN209881421U (en) | 2019-06-26 | 2019-06-26 | Oil well area multi-source micro-grid power supply device system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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