CN110971178A - Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system - Google Patents
Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system Download PDFInfo
- Publication number
- CN110971178A CN110971178A CN201911287915.4A CN201911287915A CN110971178A CN 110971178 A CN110971178 A CN 110971178A CN 201911287915 A CN201911287915 A CN 201911287915A CN 110971178 A CN110971178 A CN 110971178A
- Authority
- CN
- China
- Prior art keywords
- control unit
- wind
- oil
- power supply
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims description 39
- 230000005855 radiation Effects 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims 7
- 230000005611 electricity Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
Abstract
The invention discloses an off-grid power supply control system with complementation of wind, light, oil and electricity storage. The invention comprises a solar panel photovoltaic array (10), an energy storage battery pack (20), an inverter (30), a wind driven generator, a diesel generator, a monitoring and data unit (1) for detecting, controlling, storing and displaying each unit of an off-grid power system, a photovoltaic power control unit (2), a fan control unit (3), an oil engine control unit (4) and a direct current bus (5), the energy storage battery pack (20), the inverter (30), the photovoltaic power control unit (2), the fan control unit (3) and the oil engine control unit (4) are respectively connected with a direct current bus (5), the monitoring and data unit (1) is respectively connected with the energy storage battery pack (20), the inverter (30), the photovoltaic power control unit (2), the fan control unit (3) and the oil engine control unit (4) through a 485 communication line (6). The invention can be widely applied to the field of power supply and control.
Description
Technical Field
The invention relates to an off-grid power supply control system, in particular to an off-grid power supply control system with complementation of a wind-light storage and oil engine.
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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an off-grid power supply control system with complementation of wind, light and oil storage and oil engine, which has high integration level, high safety, high working efficiency, long service life and all-weather power supply.
The technical scheme adopted by the invention is as follows: the system comprises a solar panel photovoltaic array for converting solar radiation energy into direct current energy, an energy storage battery pack for storing electric energy, an inverter for converting the direct current of the energy storage battery pack into alternating current, a wind driven generator for converting wind energy into electric energy, a diesel generator for converting heat energy into alternating current energy, a monitoring and data unit for detecting, controlling, storing and displaying each unit of an off-grid power system, a photovoltaic power control unit for controlling the power generation of the solar panel photovoltaic array, a fan control unit for controlling the power generation of the wind driven generator, an oil engine control unit for controlling the power generation of the diesel generator, and a direct current bus, wherein the energy storage battery pack, the inverter, the photovoltaic power control unit, the fan control unit, the direct current bus, the photovoltaic power control unit, the wind driven generator control unit, the power generation unit, the oil engine, The oil engine control unit is respectively connected with the direct current bus, and the monitoring and data unit is respectively connected with the energy storage battery pack, the inverter, the photovoltaic power control unit, the fan control unit and the oil engine control unit through communication lines.
The inverter is connected with a user side alternating current load through an alternating current bus.
The monitoring and data unit comprises a communication protocol conversion module, a data acquisition module, a local storage module, a display screen and a far-end communication interface, and remote communication is carried out through the far-end communication interface.
The photovoltaic power control unit comprises a plurality of photovoltaic controllers which are matched with a plurality of solar panel photovoltaic arrays.
The fan control unit comprises a plurality of wind generating set controllers which are matched with the wind generators.
The oil engine control unit comprises an oil engine starting and stopping controller and a system distribution box, and is matched with the diesel generator.
The voltage of the direct current bus is direct current 48V.
The voltage of the alternating current bus is alternating current 220V.
Compared with the prior art, the invention has the beneficial effects that: the system comprises a solar panel photovoltaic array for converting solar radiation energy into direct current energy, an energy storage battery pack for storing electric energy, an inverter for converting direct current of the energy storage battery pack into alternating current, a wind driven generator for converting wind energy into electric energy, a diesel generator for converting heat energy into alternating current energy, a monitoring and data unit for detecting, controlling, storing and displaying each unit of an off-grid power system, a photovoltaic power control unit for controlling power generation of the solar panel photovoltaic array, a fan control unit for controlling power generation of the wind driven generator, an oil engine control unit for controlling power generation of the diesel generator, and a direct current bus, wherein the energy storage battery pack, the inverter, the photovoltaic power control unit, the fan control unit, the direct current bus, the photovoltaic power control unit, the wind driven generator control unit, the power generation control unit, the oil engine control unit and the, The oil engine control unit is respectively connected with the direct current bus, and the monitoring and data unit is respectively connected with the energy storage battery pack, the inverter, the photovoltaic power control unit, the fan control unit and the oil engine control unit through communication lines; the invention breaks through the inherent thinking of the prior art in the field, overcomes the defects and shortcomings of the prior art, adopts two power generation units of photovoltaic power generation and wind power generation as main energy sources, adopts a diesel generator as a standby emergency power generation unit, realizes multi-energy complementation, and also adopts an energy storage system and a plurality of systems which are overlapped to ensure that the system can provide high-quality energy supply for loads stably and high-quality, thereby being suitable for all places without power grid coverage, including places with corrosion, flammability, explosiveness and the like, in particular to the fields with mobile energy requirements such as communication base stations, forest fire monitoring, scientific investigation, exploration, emergency rescue and the like, being easy to install and maintain, stable in performance and high in efficiency, and the project performs wind resistance, lodging resistance, wind, light power generation capability, efficiency, electric energy quality and other tests on the trial effect through autonomous design, trial production and on-site practical trial, all aspects of performance meet the design requirements, the effect is very obvious, and the perfect success is achieved; the wind, light and oil storage and oil engine complementary off-grid power supply control system has the advantages of high integration level, high safety, high working efficiency, long service life and all-weather power supply.
Drawings
Fig. 1 is a schematic diagram of a wind-solar-oil-storage-machine-complementary off-grid power supply control system according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides an off-grid power supply control system with complementation of wind, light, solar energy storage and oil engine, which includes a solar panel photovoltaic array 10 for converting solar radiation energy into dc energy, an energy storage battery pack 20 for storing electric energy, an inverter 30 for converting dc energy of the energy storage battery pack 20 into ac energy, a wind power generator for converting wind energy into electric energy, a diesel generator for converting thermal energy into ac energy, a monitoring and data unit 1 for detecting, controlling, storing and displaying units of the off-grid power system, a photovoltaic power control unit 2 for controlling power generation of the solar panel photovoltaic array 10, a fan control unit 3 for controlling power generation of the wind power generator, an oil engine control unit 4 for controlling power generation of the diesel generator, an oil engine control unit 4 for controlling power generation of the wind power generator, and an oil engine control unit 4 for controlling power generation, The energy storage battery pack 20, the inverter 30, the photovoltaic power control unit 2, the blower control unit 3 and the oil engine control unit 4 are respectively connected with the direct current bus 5, the monitoring and data unit 1 is respectively connected with the energy storage battery pack 20, the inverter 30, the photovoltaic power control unit 2, the blower control unit 3 and the oil engine control unit 4 through 485 communication lines 6, and the inverter 30 is connected with a user side alternating current load 40 through an alternating current bus 7; the monitoring and data unit 1 comprises a communication protocol conversion module, a data acquisition module, a local storage module, a display screen and a far-end communication interface, and remote communication is carried out through the far-end communication interface, so that the operation of the whole off-network system is conveniently remotely detected and controlled; the photovoltaic power control unit 2 comprises a plurality of photovoltaic controllers which are matched with a plurality of solar panel photovoltaic arrays 10; the fan control unit 3 comprises a plurality of wind generating set controllers which are matched with the wind generators; the oil engine control unit 4 comprises an oil engine starting and stopping controller and a system distribution box and is matched with the diesel generator; the voltage of the direct current bus 5 is 48V direct current, and the voltage of the alternating current bus 7 is 220V alternating current.
The invention can switch and control the power supply of the load end to the solar photovoltaic power generation system, the wind power generation system, the energy storage system, the diesel generator and the like so as to realize that the load end is preferentially supplied with power by the solar photovoltaic power generation and the wind power generation, and the power is supplied by the wind power when the solar photovoltaic power generation is not carried out; when the solar photovoltaic wind power generation device is in extreme weather, the storage battery pack of the energy storage system supplies power when the solar photovoltaic wind power generation device does not generate power; when the storage battery pack is exhausted, the diesel generator is automatically switched to be started to supply power, and each system is connected with a system main control unit through a chain circuit breaker, a switching controller, signal transmission equipment and the like so as to realize the control of the whole system and ensure the power supply.
The invention breaks through the inherent thinking of the prior art in the field, overcomes the defects and shortcomings of the prior art, adopts two power generation units of photovoltaic power generation and wind power generation as main energy sources, adopts a diesel generator as a standby emergency power generation unit, realizes multi-energy complementation, and also adopts an energy storage system and a plurality of systems which are overlapped to ensure that the system can provide high-quality energy supply for loads stably and high-quality, thereby being suitable for all places without power grid coverage, including places with corrosion, flammability, explosiveness and the like, in particular to the fields with mobile energy requirements such as communication base stations, forest fire monitoring, scientific investigation, exploration, emergency rescue and the like, being easy to install and maintain, stable in performance and high in efficiency, and the project performs wind resistance, lodging resistance, wind, light power generation capability, efficiency, electric energy quality and other tests on the trial effect through autonomous design, trial production and on-site practical trial, all aspects of performance meet the design requirements, the effect is very obvious, and the perfect success is achieved; the wind, light and oil storage and oil engine complementary off-grid power supply control system has the advantages of 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 invention can be widely applied to the field of power supply and control.
Claims (8)
1. The utility model provides a wind light stores up and complementary off-grid power supply control system of oil machine which characterized in that: the system comprises a solar panel photovoltaic array (10) for converting solar radiation energy into direct current energy, an energy storage battery pack (20) for storing electric energy, an inverter (30) for converting the direct current of the energy storage battery pack (20) into alternating current, a wind driven generator for converting wind energy into electric energy, a diesel generator for converting the heat energy into the alternating current energy, a monitoring and data unit (1) for detecting, controlling, storing and displaying each unit of an off-grid power system, a photovoltaic power control unit (2) for controlling the power generation of the solar panel photovoltaic array (10), a fan control unit (3) for controlling the power generation of the wind driven generator, an oil engine control unit (4) for controlling the power generation of the diesel generator, a direct current bus (5), the energy storage battery pack (20), The inverter (30), the photovoltaic power control unit (2), the fan control unit (3) and the oil engine control unit (4) are respectively connected with the direct current bus (5), and the monitoring and data unit (1) is respectively connected with the energy storage battery pack (20), the inverter (30), the photovoltaic power control unit (2), the fan control unit (3) and the oil engine control unit (4) through 485 communication lines (6).
2. The wind, solar, oil and fuel hybrid off-grid power supply control system of claim 1, wherein: the inverter (30) is connected to a user-side AC load (40) via an AC bus (7).
3. The wind, solar, oil and fuel hybrid off-grid power supply control system of claim 1, wherein: the monitoring and data unit (1) comprises a communication protocol conversion module, a data acquisition module, a local storage module, a display screen and a far-end communication interface, and remote communication is carried out through the far-end communication interface.
4. The wind, solar, oil and fuel hybrid off-grid power supply control system of claim 1, wherein: the photovoltaic power control unit (2) comprises a plurality of photovoltaic controllers which are matched with the plurality of solar panel photovoltaic arrays (10).
5. The wind, solar, oil and fuel hybrid off-grid power supply control system of claim 1, wherein: the fan control unit (3) comprises a plurality of wind generating set controllers which are matched with the wind generating sets.
6. The wind, solar, oil and fuel hybrid off-grid power supply control system of claim 1, wherein: the oil engine control unit (4) comprises an oil engine starting and stopping controller and a system distribution box, and is matched with the diesel generator.
7. The wind, light, oil and fuel hybrid off-grid power supply control system according to any one of claims 1 to 6, characterized in that: the voltage of the direct current bus (5) is direct current 48V.
8. The wind, light, oil and fuel hybrid off-grid power supply control system according to any one of claims 1 to 6, characterized in that: the voltage of the alternating current bus (7) is alternating current 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287915.4A CN110971178A (en) | 2019-12-15 | 2019-12-15 | Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287915.4A CN110971178A (en) | 2019-12-15 | 2019-12-15 | Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110971178A true CN110971178A (en) | 2020-04-07 |
Family
ID=70034269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911287915.4A Pending CN110971178A (en) | 2019-12-15 | 2019-12-15 | Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110971178A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799880A (en) * | 2020-07-23 | 2020-10-20 | 深圳市矿鑫发展有限公司 | Off-grid integrated communication power supply system, control method and storage medium |
| RU2808792C1 (en) * | 2023-01-30 | 2023-12-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет императрицы Екатерины II" | Electrical complex for autonomous power supply of well pumping units for oil production |
-
2019
- 2019-12-15 CN CN201911287915.4A patent/CN110971178A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799880A (en) * | 2020-07-23 | 2020-10-20 | 深圳市矿鑫发展有限公司 | Off-grid integrated communication power supply system, control method and storage medium |
| RU2808792C1 (en) * | 2023-01-30 | 2023-12-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет императрицы Екатерины II" | Electrical complex for autonomous power supply of well pumping units for oil production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102780254B (en) | Photovoltaic charge station | |
| US8946933B2 (en) | Power management apparatus and method of operating the same | |
| CN103047601A (en) | Emergency lighting and evacuation guide device capable of achieving hybrid energy power supply | |
| CN201332367Y (en) | Solar energy movable power station | |
| CN104377800A (en) | Clean-environment-protecting-power-supply electric car charging station system | |
| CN211046812U (en) | Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system | |
| EP3182554B1 (en) | A system for converting distributed renewable energy into usable energy | |
| CN110971178A (en) | Wind-solar-oil-storage-oil-machine-complementary off-grid power supply control system | |
| CN102522814A (en) | Wind-solar hybrid distribution type generating set | |
| CN217824790U (en) | Distributed wind-solar hybrid power generation system | |
| CN204119119U (en) | A kind of portable photo-voltaic power supply | |
| CN203734367U (en) | Communication base station solar power generation DC grid-connected power supply system | |
| CN211239344U (en) | Wind, light, diesel and energy storage integrated AC/DC off-grid micro-grid integrated controller | |
| CN102195295A (en) | Wind-solar-fuel storage battery hybrid grid-connected and off-grid dual-purpose system | |
| CN211063354U (en) | Wind-solar energy storage and commercial power complementary power supply control system | |
| CN103075705B (en) | The emergency lighting device that energy mix is powered | |
| CN110932324A (en) | Wind-solar energy storage and commercial power complementary power supply control system | |
| CN202586401U (en) | Mixing DC system shared by hydropower station and photovoltaic power station | |
| CN202102663U (en) | Wind-solar hybrid display system | |
| KR20110027438A (en) | Emergency power source supply system using multiple power generation | |
| CN205377434U (en) | Novel solar photovoltaic power supply device | |
| CN218514136U (en) | Solar box-type substation for tunnel power supply | |
| CN210958224U (en) | Wind, light, diesel and storage integrated AC/DC off-grid micro-grid system | |
| CN210629143U (en) | Water aerator control system with wind energy and solar energy complementary power supply | |
| CN103047602B (en) | The emergency lighting device that clean energy resource is powered |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |