CN211239344U - Wind, light, diesel and energy storage integrated AC/DC off-grid micro-grid integrated controller - Google Patents
Wind, light, diesel and energy storage integrated AC/DC off-grid micro-grid integrated controller Download PDFInfo
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- CN211239344U CN211239344U CN201922202760.1U CN201922202760U CN211239344U CN 211239344 U CN211239344 U CN 211239344U CN 201922202760 U CN201922202760 U CN 201922202760U CN 211239344 U CN211239344 U CN 211239344U
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Abstract
The utility model discloses a wind-solar-diesel-storage integrated AC/DC off-grid microgrid integrated controller, which comprises a bus bar, a plurality of photovoltaic controllers, a wind power direct current junction box, a diesel power direct current switching box and a diesel power automatic start-stop control distribution box, wherein the photovoltaic controllers are connected with a photovoltaic array group, the wind power direct current junction box is connected with a wind driven generator through a wind power controller, the diesel power direct current switching box is connected with a diesel power alternating current distribution box through a diesel power direct current stabilized voltage power supply and is connected with a diesel generator through the diesel power alternating current distribution box, the diesel power automatic start-stop control distribution box is used for sending diesel power automatic start-stop control distribution current signals to the diesel power alternating current distribution box, optical examination current transformers are arranged on the bus bar behind all the photovoltaic controllers, the rear end of the bus bar is provided with a total quantity current transformer, a diesel voltage transformer is arranged between the diesel generator and the diesel power alternating, the bus bar tail end is used for connecting a plurality of battery packs and a communication equipment set for carrying out wireless remote communication with the outside so as to carry out remote monitoring, metering and remote meter reading.
Description
Technical Field
The utility model relates to an from net microgrid controller, especially relate to a wind-light firewood stores up integration alternating current-direct current from net microgrid integrated control ware.
Background
The photovoltaic power generation system uses a photovoltaic cell panel as a power generation component, the generated electric energy is adjusted and controlled through a controller, on one hand, the adjusted energy is sent to a direct current load or an alternating current load, on the other hand, redundant energy is sent to a storage battery pack for storage, when the generated electric energy cannot meet the load requirement, the controller sends the electric energy of the storage battery to the load, after the storage battery is fully charged, the controller controls the storage battery not to be overcharged, when the electric energy stored by the storage battery is discharged, the controller controls the storage battery not to be overdischarged, the storage battery is protected, and the storage battery can store the energy, so that the power consumption of the load is ensured at night or in rainy days. However, the existing photovoltaic power generation system has intermittence and randomness when applied to the ground, the power generation amount is related to the weather condition, and the power generation cannot be carried out or is very little at night or in rainy days; and the energy density is low, and under the standard condition, a large area is required to be occupied when the energy-saving type solar cell is used on a large scale.
In many areas without grid coverage, there are many demands that require power supply, such as: people in places such as islands, mountains, frontier sentries, remote villages and the like have urgent needs for power supply in life and work, particularly in modern society, communication systems are life necessities that everyone cannot leave, scientific investigation, exploration, survey, security, fire protection and the like are carried out by means of power. Therefore, the life and work of people can be basically guaranteed only by the facilities and the equipment which can provide power for all the equipment in the occasions. In these situations, the connection of the solar system to the main grid is not allowed or practical, and therefore only off-grid type photovoltaic power generation systems, referred to as off-grid systems, can be deployed. The off-grid system may be arranged to charge the battery when the amount of power provided by the system exceeds the required amount, relying on the generator or battery to provide power on days when the amount of power generated by the solar panel is less than the required power, such as during cloudy days or at night. The traditional off-grid system is simple in structure, coarse, easy to damage, low in working efficiency and short in service life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a scene firewood of integrated level height, security height, work efficiency height, long-life, all-weather power supply stores up integration alternating current-direct current from net microgrid integrated control ware.
The utility model adopts the technical proposal that: the utility model comprises a bus bar, a plurality of photovoltaic controllers, a wind power direct current junction box, a diesel power direct current switching box and a diesel power automatic start-stop control distribution box, wherein the photovoltaic controllers are connected with the bus bar and are used for being connected with an explosion-proof junction box through a photovoltaic controller switch and being connected with a photovoltaic array group through the explosion-proof junction box, the wind power direct current junction box is connected with the bus bar through a wind power access switch and a wind examination current transformer and is used for being connected with a wind driven generator through the wind power controller, the diesel power direct current switching box is connected with the bus bar through a diesel power access switch and a diesel examination current transformer and is used for being connected with a diesel power alternating current distribution box through a diesel power direct current power supply and being connected with the diesel generator through the diesel power alternating current distribution box, the diesel power automatic start-stop control distribution box is connected with the bus bar through a diesel power control signal sampling source, and with diesel generator is connected, and be used for to diesel electricity AC distribution box sends the automatic control distribution current signal that opens and stop of diesel electricity, all behind the photovoltaic controller female arranging and being equipped with light examination current transformer, female rear end of arranging still is equipped with total measurement current transformer, diesel generator with be equipped with diesel voltage transformer between the diesel electricity AC distribution box, female tail end of arranging is used for connecting the group battery of a plurality of storage electric energy and is used for carrying out wireless remote communication with the external world to carry out remote monitoring, measurement, the communication equipment group of long-range checking meter.
The wind, light, diesel and storage integrated AC/DC off-grid microgrid integrated controller further comprises an automatic adjusting support system control box connected with the busbar, and the automatic adjusting support system control box is used for controlling a hydraulic pump to enable the hydraulic lifter to act so that the photovoltaic array group is driven by the hydraulic lifter to lift.
The wind, light, diesel and storage integrated AC/DC off-grid microgrid integrated controller further comprises a weather station instrument and a controller which are connected with the busbar, wherein the weather station instrument and the controller are used for receiving local weather early warning information and sending signals to the automatic adjusting support system control box when receiving the severe weather early warning information to control the hydraulic lifter to descend so as to realize automatic protection of the photovoltaic array group.
The wind, light, diesel and electricity storage integrated AC/DC off-grid micro-grid integrated controller further comprises a wind power standby circuit and a wind power standby circuit switch which are connected with the busbar respectively, and a diesel power standby circuit switch.
The photovoltaic controller includes a standby photovoltaic controller.
The bottom of the cabinet body of the wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller is provided with a foundation layer, the top of the cabinet body is provided with a cooling fan, and the side of the cabinet body is provided with an outer door and an inner door.
The interior of a cabinet body of the wind, light, diesel and storage integrated AC/DC off-grid micro-grid integrated controller is divided into a control component bin, a bus bin and a switch bin.
The voltage on the busbar is direct current 48V; the diesel-electric alternating current distribution box is a 380V distribution box.
The power of a single photovoltaic module of the photovoltaic array group is 285Wp, and the voltage is 38V; the power of each diesel generator is 30 kW; each battery pack comprises 24 storage batteries with rated voltage of 2V and capacity of 2500 Ah; the rated voltage of the communication equipment set is 48V, and the rated power is 5 kW.
Compared with the prior art, the beneficial effects of the utility model are that: because the utility model comprises a bus bar, a plurality of photovoltaic controllers, a wind power direct current header box, a diesel power direct current switching box and a diesel power automatic start-stop control distribution box, wherein the photovoltaic controllers are connected with the bus bar and are used for being connected with an explosion-proof junction box through a photovoltaic controller switch and being connected with a photovoltaic array group through the explosion-proof junction box, the wind power direct current header box is connected with the bus bar through a wind power access switch and a wind examination current transformer and is used for being connected with a wind driven generator through the wind power controller, the diesel power direct current switching box is connected with the bus bar through a diesel power access switch and a diesel examination current transformer and is used for being connected with a diesel power alternating current distribution box through a diesel power direct current power supply and being connected with the diesel generator through the diesel power alternating current distribution box, the diesel power automatic start-stop control distribution box is connected with the bus bar through a diesel power control signal sampling source, the photovoltaic intelligent control system is connected with the diesel generator and used for sending diesel automatic start-stop control distribution current signals to the diesel alternating current distribution box, an optical examination current transformer is arranged on the busbar behind all the photovoltaic controllers, a total metering current transformer is further arranged at the rear end of the busbar, a diesel voltage transformer is arranged between the diesel generator and the diesel alternating current distribution box, and the tail end of the busbar is used for connecting a plurality of battery packs for storing electric energy and carrying out wireless remote communication with the outside so as to carry out remote monitoring, metering and remote meter reading; the utility model discloses broken through the inherent thinking of prior art in the field, prior art's defect and not enough has been overcome, scene firewood stores up integration alternating current-direct current from net microgrid integrated controller can control and uses two individual power generation unit of photovoltaic power generation and wind power generation as main energy source, use diesel generator as reserve emergent power generation unit, if there is hydraulic resource on the scene to utilize, can also insert the integrated unified control of synthesizing of hydroelectric generation unit, realize the multi-energy complementation, in addition energy storage system, the multi-system stacks, in order to ensure that this system is stable, high-quality provides high-quality energy supply for the load, this integrated controller can be two kinds of mode operation of direct current system and alternating current system, its scale can be big or small, can design according to actual need, the installation, it can adapt to all places that do not have the electric wire netting to cover, including corroding, The integrated controller of the wind, light, diesel and storage integrated AC/DC off-grid microgrid has the functions of charging, discharging control, voltage, current monitoring, remote monitoring, automatic alarm of overpressure and underpressure, communication, automatic protection, metering, remote meter reading and the like, is easy to install and maintain, stable in performance and high in efficiency, can immediately start a protection system to protect the controller to reduce loss when meeting extreme weather such as typhoon and the like, has failure in partial power failure, does not influence normal operation of other parts, and is a preferential selection equipment system widely used for energy supply in various fields, the project is designed independently, produced in a trial mode, actually tried on the site of the project, and tests in various aspects such as wind resistance, lodging resistance, wind and light power generation capacity, efficiency, electric energy quality and the like are carried out on the trial effect, so that the performance of each aspect meets the design requirements, the effect is very obvious, and the perfect success is achieved; the event the utility model relates to a scene firewood that integrated level is high, the security is high, work efficiency is high, long-life, all-weather power supply stores up integration alternating current-direct current off-grid microgrid integrated control ware.
Drawings
Fig. 1 is a schematic primary wiring diagram of an integrated controller of a wind, light, diesel and storage integrated ac/dc off-grid microgrid and an energy unit in an embodiment of the present invention;
fig. 2 is a flow chart of the communication base station ac power distribution process according to the embodiment of the present invention;
fig. 3 is a flow chart of the dc power distribution process of the communication base station according to the embodiment of the present invention;
fig. 4 is a schematic front structural diagram of the wind, light, diesel and energy storage integrated ac/dc off-grid microgrid integrated controller according to the embodiment of the present invention;
fig. 5 is a schematic side structure diagram of the integrated controller of the wind, light, diesel and energy storage integrated ac/dc off-grid microgrid of the embodiment of the present invention;
fig. 6 is a schematic side sectional structure diagram of the integrated controller of the wind, light, diesel and energy storage integrated ac/dc off-grid microgrid.
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.
As shown in fig. 1 to 6, the wind, light, diesel, storage and alternating current integrated ac/dc off-grid microgrid integrated controller of the present embodiment includes a busbar 1, a plurality of photovoltaic controllers 2, a wind power dc combiner box 6, a diesel power dc switching box 7, and a diesel power automatic start/stop control distribution box 75, wherein the photovoltaic controllers 2 are connected to the busbar 1, and are used for being connected to an explosion-proof junction box 3 through a photovoltaic controller switch 20, and being connected to a photovoltaic array group 4 through the explosion-proof junction box 3, the wind power dc combiner box 6 is connected to the busbar 1 through a wind power access switch 60 and a wind examination current transformer 52 in sequence, and is used for being connected to a wind power generator 62 through a wind power controller 61, the diesel power dc switching box 7 is connected to the busbar 1 through a diesel power access switch 70 and a diesel examination current transformer 53 in sequence, and is used for being connected to a diesel power ac distribution box 72 through a diesel power dc, the diesel-electric automatic start-stop control distribution box 75 is connected with the busbar 1 through a diesel-electric control signal sampling source 76, is connected with the diesel generator 71 and is used for sending a diesel-electric automatic start-stop control distribution current signal to the diesel-electric alternating current distribution box 72, a light examination current transformer 51 is arranged on the busbar 1 behind all the photovoltaic controllers 2, a total measurement current transformer 50 is further arranged at the rear end of the busbar 1, a diesel voltage transformer 74 is arranged between the diesel generator 71 and the diesel-electric alternating current distribution box 72, and the tail end of the busbar 1 is used for connecting a plurality of battery packs 11 for storing electric energy and carrying out wireless remote communication with the outside so as to carry out remote monitoring, metering and remote meter reading of the communication equipment set 100; the wind, light, diesel and storage integrated AC/DC off-grid microgrid integrated controller 10 further comprises an automatic adjusting support system control box 8 connected with the busbar 1, wherein the automatic adjusting support system control box 8 is used for controlling a hydraulic pump 82 to enable the hydraulic lifter 81 to act so as to enable the photovoltaic array group 4 to be driven by the hydraulic lifter 81 to lift; the wind, light, diesel and storage integrated AC/DC off-grid microgrid integrated controller 10 further comprises a meteorological station instrument and controller 9 connected with the busbar 1, wherein the meteorological station instrument and controller 9 is used for receiving local meteorological early warning information, sending a signal to the automatic adjusting bracket system control box 8 when receiving severe weather early warning information, and controlling the hydraulic lifter 81 to descend so as to realize automatic protection of the photovoltaic array group 4; the wind, light, diesel and storage integrated alternating current and direct current off-grid microgrid integrated controller 10 further comprises a wind power standby circuit and wind power standby circuit switch 68, a diesel power standby circuit and a diesel power standby circuit switch 78 which are respectively connected with the busbar 1; the photovoltaic controller 2 comprises a standby photovoltaic controller 21; the bottom of the cabinet body of the wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller 10 is provided with a foundation layer 19, the top of the cabinet body is provided with a cooling fan 18, and the side of the cabinet body is provided with an outer door 16 and an inner door 17; the interior of the cabinet body of the wind, light, diesel and storage integrated AC/DC off-grid micro-grid integrated controller 10 is divided into a control component bin, a bus bin and a switch bin; the power of the single photovoltaic module 41 of the photovoltaic array group 4 is 285Wp, and the voltage is 38V; the power of each diesel generator 71 is 30 kW; each battery pack 11 comprises 24 storage batteries with rated voltage of 2V and capacity of 2500 Ah; the rated voltage of the communication equipment group 100 is 48V, and the rated power is 5 kW.
The wind, light, diesel and storage integrated alternating current and direct current off-grid microgrid integrated controller is applied to a wind, light, diesel and storage integrated alternating current and direct current off-grid microgrid system, the wind, light, diesel and storage integrated alternating current and direct current off-grid microgrid system further comprises a plurality of photovoltaic array groups 4 for converting solar radiation energy into direct current energy, two wind power generators 62 for converting wind energy into electric energy, two diesel generators 71 for converting heat energy into alternating current energy, and a communication equipment group 100, each photovoltaic module 41 of each photovoltaic array group 4 is connected to an explosion-proof junction box 3, the explosion-proof junction box 3 is connected with the photovoltaic controller 2 through a photovoltaic controller switch 20, the wind power generators 62 are connected with the wind power controller 61 and then connected with the wind power direct current junction box 6 and then connected with the busbar 1, and after the diesel generators 71 are connected with a diesel alternating current distribution box, the diesel-electric automatic start-stop control distribution box 75 is connected with the diesel generator 71, is connected with the busbar 1 through a diesel-electric direct-current voltage-stabilizing power supply 73 and is connected with the diesel switching box 7, and sends a diesel-electric automatic start-stop control distribution current signal to the diesel-electric alternating-current distribution box 72; the wind, light and diesel energy storage integrated alternating current and direct current off-grid microgrid integrated control system further comprises an alternating current charging controller cabinet 201, an alternating current convergence power distribution cabinet 300, an alternating current metering cabinet 400 and a communication box 101, wherein a diesel generator automatic starting controller 77 is arranged in the alternating current charging controller cabinet 201, a master meter mutual inductor 30, a wind generating mutual inductor 31, a diesel generating mutual inductor 32, a diesel control signal sampling source 76, a wind power access switch 60 and a diesel power access switch 70 are arranged in the alternating current convergence power distribution cabinet 300, and a master generating meter, a wind power generation check meter and a diesel power generation check meter are arranged in the alternating current metering cabinet 400; the wind, light and diesel energy storage integrated alternating current and direct current off-grid microgrid system further comprises a direct current charging controller cabinet 200, a wind driven generator power distribution cabinet 600 and a diesel generator power distribution cabinet 700, wherein a voltmeter, an ammeter, a diesel and electricity examination meter, a plurality of photoelectric controllers, a light examination current transformer 51, a wind examination current transformer 52, a diesel examination current transformer 53 and a total measurement current transformer 50 are arranged in the direct current charging controller cabinet 200.
The utility model discloses broken through the inherent thinking of prior art in the field, prior art's defect and not enough has been overcome, scene firewood stores up integration alternating current-direct current from net microgrid integrated controller can control and uses two individual power generation unit of photovoltaic power generation and wind power generation as main energy source, use diesel generator as reserve emergent power generation unit, if there is hydraulic resource on the scene to utilize, can also insert the integrated unified control of synthesizing of hydroelectric generation unit, realize the multi-energy complementation, in addition energy storage system, the multi-system stacks, in order to ensure that this system is stable, high-quality provides high-quality energy supply for the load, this integrated controller can be two kinds of mode operation of direct current system and alternating current system, its scale can be big or small, can design according to actual need, the installation, it can adapt to all places that do not have the electric wire netting to cover, including corroding, The integrated controller of the wind, light, diesel and storage integrated AC/DC off-grid microgrid has the functions of charging, discharging control, voltage, current monitoring, remote monitoring, automatic alarm of overpressure and underpressure, communication, automatic protection, metering, remote meter reading and the like, is easy to install and maintain, stable in performance and high in efficiency, can immediately start a protection system to protect the controller to reduce loss when meeting extreme weather such as typhoon and the like, has failure in partial power failure, does not influence normal operation of other parts, and is a preferential selection equipment system widely used for energy supply in various fields, the project is designed independently, produced in a trial mode, actually tried on the site of the project, and tests in various aspects such as wind resistance, lodging resistance, wind and light power generation capacity, efficiency, electric energy quality and the like are carried out on the trial effect, so that the performance of each aspect meets the design requirements, the effect is very obvious, and the perfect success is achieved; therefore the utility model relates to a wind-solar-diesel-storage integrated AC/DC off-grid microgrid integrated controller with high integration level, high safety, high working efficiency, long service life and all-weather power supply.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
The utility model discloses but wide application in electricity generation power supply field.
Claims (9)
1. The utility model provides a wind, light, firewood and store up integration alternating current-direct current and leave net microgrid integrated controller which characterized in that: the photovoltaic controller (2) is connected with the busbar (1), is connected with an explosion-proof junction box (3) through a photovoltaic controller switch (20), is connected with a photovoltaic array group (4) through the explosion-proof junction box (3), is connected with the wind power array group (4) through the wind power access switch (60) and a wind examination current transformer (52) in sequence through the wind power junction box (6), is connected with the busbar (1) and is connected with a wind driven generator (62) through a wind power controller (61), and the diesel power direct current box (7) is connected with the busbar (1) through a diesel power access switch (70) and a diesel examination current transformer (53) in sequence, and be used for being connected with diesel-electric AC distribution box (72) through diesel-electric DC voltage-stabilizing power supply (73), and pass through diesel-electric AC distribution box (72) are connected with diesel generator (71), diesel-electric automatic start-stop control distributor box (75) open through diesel-electric control signal sampling source (76) with female arranging (1) is connected, and with diesel generator (71) are connected, and be used for to diesel-electric AC distribution box (72) send the automatic control distribution current signal that opens and stop of diesel-electric, whole photovoltaic controller (2) back be equipped with light examination current transformer (51) on female arranging (1), the rear end of female arranging (1) still is equipped with total measurement current transformer (50), diesel generator (71) with be equipped with diesel voltage transformer (74) between diesel-electric AC distribution box (72), the tail end of female arranging (1) is used for connecting a plurality of group battery (11) of storage electric energy and is used for carrying out wireless long-range long-distance remote with the external world and carries out And a communication equipment group (100) for communication to perform remote monitoring, metering and remote meter reading.
2. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 1 is characterized in that: the wind, light, diesel and energy storage integrated alternating current and direct current off-grid microgrid integrated controller (10) further comprises an automatic adjusting support system control box (8) connected with the busbar (1), and the automatic adjusting support system control box (8) is used for controlling a hydraulic pump (82) to enable a hydraulic lifter (81) to act so that the photovoltaic array group (4) is driven by the hydraulic lifter (81) to lift.
3. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 2 is characterized in that: the wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller (10) further comprises a weather station instrument and a controller (9) connected with the busbar (1), wherein the weather station instrument and the controller (9) are used for receiving local weather early warning information and sending signals to the automatic adjusting support system control box (8) when receiving severe weather early warning information to control the hydraulic lifter (81) to descend so as to realize automatic protection of the photovoltaic array group (4).
4. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 1 is characterized in that: the wind, light, diesel and energy storage integrated alternating current and direct current off-grid microgrid integrated controller (10) further comprises a wind power standby circuit and a wind power standby circuit switch (68), a diesel power standby circuit and a diesel power standby circuit switch (78) which are respectively connected with the busbar (1).
5. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 1 is characterized in that: the photovoltaic controller (2) comprises a standby photovoltaic controller (21).
6. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 1 is characterized in that: the wind, light, diesel and energy storage integrated alternating current and direct current off-grid microgrid integrated controller (10) is characterized in that a foundation layer (19) is arranged at the bottom of a cabinet body, a cooling fan (18) is arranged at the top of the cabinet body, and an outer door (16) and an inner door (17) are arranged on the side faces of the cabinet body.
7. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of claim 1 is characterized in that: the interior of a cabinet body of the wind, light, diesel and storage integrated AC/DC off-grid micro-grid integrated controller (10) is divided into a control component bin, a bus bin and a switch bin.
8. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of any one of claims 1 to 5 is characterized in that: the voltage on the busbar (1) is direct current 48V; the diesel-electric alternating current distribution box (72) is a 380V distribution box.
9. The wind, light, diesel and energy storage integrated AC/DC off-grid microgrid integrated controller of any one of claims 1 to 5 is characterized in that: the power of a single photovoltaic assembly (41) of the photovoltaic array group (4) is 285Wp, and the voltage is 38V; the power of each diesel generator (71) is 30 kW;
each battery pack (11) comprises 24 storage batteries with rated voltage of 2V and capacity of 2500 Ah;
the rated voltage of the communication equipment group (100) is 48V, and the rated power is 5 kW.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2888251A1 (en) * | 2021-06-15 | 2022-01-03 | Vano Josep Francesc Beneyto | GEO (ELECTRONIC OPTIMIZED MANAGEMENT OF ELECTRICAL ENERGY) (Machine-translation by Google Translate, not legally binding) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2888251A1 (en) * | 2021-06-15 | 2022-01-03 | Vano Josep Francesc Beneyto | GEO (ELECTRONIC OPTIMIZED MANAGEMENT OF ELECTRICAL ENERGY) (Machine-translation by Google Translate, not legally binding) |
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