CN110601266A - Water-light-hydrogen complementary micro-grid power generation system and method - Google Patents
Water-light-hydrogen complementary micro-grid power generation system and method Download PDFInfo
- Publication number
- CN110601266A CN110601266A CN201910944185.4A CN201910944185A CN110601266A CN 110601266 A CN110601266 A CN 110601266A CN 201910944185 A CN201910944185 A CN 201910944185A CN 110601266 A CN110601266 A CN 110601266A
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- China
- Prior art keywords
- hydrogen
- water
- light
- power generation
- complementary
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 71
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 71
- 230000000295 complement effect Effects 0.000 title claims abstract description 43
- 238000010248 power generation Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000004146 energy storage Methods 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of hydroelectric power generation, in particular to a water-light-hydrogen complementary micro-grid power generation system and method. The system comprises a water-light complementary system, a hydrogen energy storage system, an AC/DC device, a DC/AC device and a hydrogen fuel cell, wherein the water-light complementary system consists of a hydroelectric power generation system and a photovoltaic power generation system, the power output end of the water-light complementary system is connected with the power input end of the hydrogen energy storage system through the AC/DC device, the hydrogen gas outlet of the hydrogen energy storage system is connected with the hydrogen gas inlet of the hydrogen fuel cell through a pipeline, and the power output end of the hydrogen fuel cell supplies power to a load through the DC/AC device. The redundant electric energy generated by the water-light complementary system is electrolyzed to produce hydrogen, and the electric energy is provided when the power supply is insufficient, so that the utilization rate of renewable resources is effectively improved, the operation and maintenance cost is reduced, and the power supply is more stable.
Description
Technical Field
The invention relates to the technical field of hydroelectric power generation, in particular to a water-light-hydrogen complementary micro-grid power generation system and method.
Background
China has abundant water resources, and hydropower construction achieves the remarkable achievement, so that the economic and social benefits are remarkable, but certain problems which cannot be ignored exist. If the electric load of the power transmission areas of partial hydropower stations is not coordinated with natural runoff, the generating capacity of the hydroelectric power station is greatly influenced by seasons and natural conditions in western remote areas, and once the hydropower station is put into operation, the installed capacity is difficult to expand again. Most of western regions in China are high-altitude regions, and solar energy resources are very abundant, so that the solar photovoltaic power generation system is suitable for developing photovoltaic power generation. The photovoltaic power station is influenced by sunshine time and intensity, and has the problems of intermittent photovoltaic, unstable fluctuation, low energy storage density, short energy storage time, short service life of a solar storage battery and the like.
Therefore, when the sunlight is strong, the photovoltaic power generation is used, and the hydropower is stopped or is short. When the weather changes or at night, the sawtooth-shaped photovoltaic power supply with intermittent, fluctuating and random photovoltaic power instability is adjusted to be a smooth and stable power supply which is balanced, high-quality, safe and more friendly by utilizing the quick adjustment of the hydraulic turbine set. Compared with independent hydroelectric power generation and photovoltaic power generation, the existing water-light complementary system has more excellent and stable power supply capacity, but because the load has a peak and a valley, the water-light complementary system still has the problems of insufficient power supply during the peak of the load and excessive capacity during the valley of the load.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a water-light-hydrogen complementary micro-grid power generation system and method which can avoid insufficient power supply at a load peak and excess capacity, so that the power supply is more stable and the energy utilization rate is greatly improved.
The invention relates to a water-light-hydrogen complementary micro-grid power generation system, which adopts the technical scheme that:
the system comprises a water-light complementary system, a hydrogen energy storage system, an AC/DC device, a DC/AC device and a hydrogen fuel cell, wherein the water-light complementary system consists of a hydroelectric power generation system and a photovoltaic power generation system, the power output end of the water-light complementary system is connected with the power input end of the hydrogen energy storage system through the AC/DC device, the hydrogen gas outlet of the hydrogen energy storage system is connected with the hydrogen gas inlet of the hydrogen fuel cell through a pipeline, and the power output end of the hydrogen fuel cell supplies power to a load through the DC/AC device.
Preferably, the hydrogen storage system further comprises a DC/DC device, and the output end of the AC/DC device is connected with the power supply input end of the hydrogen storage system through the DC/DC device.
The invention relates to a water-light-hydrogen complementary micro-grid power generation method, which adopts the technical scheme that: monitoring the power supply condition of the water-light complementary system, outputting the redundant electric energy of the water-light complementary system to a hydrogen energy storage system to electrolyze water to produce hydrogen when the electric energy generated by the water-light complementary system exceeds the load capacity, and outputting the produced hydrogen to a hydrogen fuel cell to generate electric energy to supply power for the load when the electric energy generated by the water-light complementary system is lower than the load capacity.
Preferably, the electrolyzed water in the hydrogen energy storage system is a water resource in the hydropower station.
Preferably, the hydrogen generated by the hydrogen fuel cell supplies power to a direct current system or supplies power to a load through direct current-to-alternating current.
The invention has the beneficial effects that: the system electrolyzes the redundant electric energy generated by the water-light complementary system to produce hydrogen, and provides the electric energy when the power supply is insufficient, thereby effectively improving the utilization rate of renewable resources, reducing the operation and maintenance cost, and ensuring more stable power supply. Can be directly applied to areas with sufficient solar energy resources and water and electricity greatly influenced by seasons and natural conditions, and has important significance for the development, utilization and popularization of renewable energy sources.
Drawings
Fig. 1 is a schematic connection diagram of a water-light-hydrogen complementary micro-grid power generation system according to the invention.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the water-light-hydrogen complementary micro-grid power generation system of the invention comprises a water-light complementary system composed of a hydroelectric power generation system and a photovoltaic power generation system, a hydrogen energy storage system, an AC/DC device, a DC/AC device and a hydrogen fuel cell. The power output end of the water-light complementary system is connected with the power input end of the hydrogen energy storage system through an AC/DC device, the hydrogen gas outlet of the hydrogen energy storage system is connected with the hydrogen gas inlet of the hydrogen fuel cell through a pipeline, and the power output end of the hydrogen fuel cell supplies power to a load through the DC/AC device. The hydrogen storage system also comprises a DC/DC device, and the output end of the AC/DC device is connected with the power input end of the hydrogen storage system through the DC/DC device.
The hydroelectric generation system is used for converting water energy into electric energy by using the hydraulic generator and then transmitting the electric energy to a load end through the AC/AC alternating current rectifying device.
The photovoltaic power generation system is used for converting light energy into electric energy by utilizing a photovoltaic array, and adjusting a sawtooth type photovoltaic power supply with intermittent, fluctuating and random photovoltaic and unstable power into a smooth and stable power supply which is balanced, high-quality, safe and more friendly through water-light complementation. Then the voltage is transmitted to a load end through an AC/AC alternating current rectifying device.
The redundant electric energy generated by the water-light complementary system can be rectified into direct current electric power required by the electrolytic hydrogen production system through an AC/DC and DC/DC rectifying device.
The hydrogen energy storage system comprises a water electrolysis hydrogen production device, the electrolyzed water in an electrolytic tank of the water electrolysis hydrogen production device is provided by a hydropower station, and the direct current power required by the electrolyzed water is provided by the redundant electric energy generated by the water-light complementary system. The hydrogen generated by the hydrogen energy storage system electrolyzing water can be output to the hydrogen fuel cell to be converted into direct current power, and the direct current power can supply power to a direct current system or supply power to a load through a DC/AC system.
Monitoring the power supply condition of the water-light complementary system, outputting the redundant electric energy of the water-light complementary system to a hydrogen energy storage system to electrolyze water to produce hydrogen when the electric energy generated by the water-light complementary system exceeds the load capacity, and outputting the produced hydrogen to a hydrogen fuel cell to generate electric energy to supply power for the load when the electric energy generated by the water-light complementary system is lower than the load capacity.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (5)
1. The utility model provides a complementary microgrid power generation system of water light hydrogen which characterized in that: the system comprises a water-light complementary system, a hydrogen energy storage system, an AC/DC device, a DC/AC device and a hydrogen fuel cell, wherein the water-light complementary system consists of a hydroelectric power generation system and a photovoltaic power generation system, the power output end of the water-light complementary system is connected with the power input end of the hydrogen energy storage system through the AC/DC device, the hydrogen gas outlet of the hydrogen energy storage system is connected with the hydrogen gas inlet of the hydrogen fuel cell through a pipeline, and the power output end of the hydrogen fuel cell supplies power to a load through the DC/AC device.
2. The water-light-hydrogen complementary micro-grid power generation system according to claim 1, wherein: the hydrogen storage system further comprises a DC/DC device, and the output end of the AC/DC device is connected with the power supply input end of the hydrogen storage system through the DC/DC device.
3. A water-light-hydrogen complementary micro-grid power generation method is characterized by comprising the following steps: monitoring the power supply condition of the water-light complementary system, outputting the redundant electric energy of the water-light complementary system to a hydrogen energy storage system to electrolyze water to produce hydrogen when the electric energy generated by the water-light complementary system exceeds the load capacity, and outputting the produced hydrogen to a hydrogen fuel cell to generate electric energy to supply power for the load when the electric energy generated by the water-light complementary system is lower than the load capacity.
4. The water-light-hydrogen complementary micro-grid power generation method of claim 3, characterized in that: and the electrolyzed water in the hydrogen energy storage system is a water resource in the hydropower station.
5. The water-light-hydrogen complementary micro-grid power generation method of claim 3, characterized in that: the hydrogen generated by the hydrogen fuel cell supplies power to a direct current system or supplies power to a load through direct current-to-alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944185.4A CN110601266A (en) | 2019-09-30 | 2019-09-30 | Water-light-hydrogen complementary micro-grid power generation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944185.4A CN110601266A (en) | 2019-09-30 | 2019-09-30 | Water-light-hydrogen complementary micro-grid power generation system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110601266A true CN110601266A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910944185.4A Withdrawn CN110601266A (en) | 2019-09-30 | 2019-09-30 | Water-light-hydrogen complementary micro-grid power generation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615362A (en) * | 2020-12-09 | 2021-04-06 | 中国能源建设集团广东省电力设计研究院有限公司 | Wind, light, oil and hydrogen storage multi-energy coupling power generation and supply control method and system |
-
2019
- 2019-09-30 CN CN201910944185.4A patent/CN110601266A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615362A (en) * | 2020-12-09 | 2021-04-06 | 中国能源建设集团广东省电力设计研究院有限公司 | Wind, light, oil and hydrogen storage multi-energy coupling power generation and supply control method and system |
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Application publication date: 20191220 |
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| WW01 | Invention patent application withdrawn after publication |