CN201851266U - Miniature water-pumping energy-storage system - Google Patents
Miniature water-pumping energy-storage system Download PDFInfo
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- CN201851266U CN201851266U CN2010206323009U CN201020632300U CN201851266U CN 201851266 U CN201851266 U CN 201851266U CN 2010206323009 U CN2010206323009 U CN 2010206323009U CN 201020632300 U CN201020632300 U CN 201020632300U CN 201851266 U CN201851266 U CN 201851266U
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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
- Y02E10/20—Hydro energy
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
A miniature water-pumping energy-storage system comprises a miniature water-pumping energy-storage machine set, a valve, water storage tanks and a water delivery pipeline, wherein the miniature water-pumping energy-storage machine set is four-machine type, three-machine type or reversible type; the low-level water storage tank is arranged on the ground or under ground; the roof of a building is provided with a high-level water storage tank; the low-level water storage tank is communicated with the water-pumping energy-storage machine set; and the water-pumping energy-storage machine set is communicated with the high-level water storage tank through a pipeline. With the utilization of the level difference of the building, especially high building in a city, the problem of relying on large reservoirs and high level-difference terrain of a large water-pumping energy-storage system is solved. The miniature water-pumping energy-storage system has the advantages of being applicable to various power supplies, environment-friendly and the like, and has broad application prospect.
Description
Technical field
The utility model belongs to electric power storing technology field, particularly relates to a kind of miniature energy-storage system that draws water that is applicable to that building is used.
Background technique
For a long time, in order to satisfy the requirement of electric load, power department has to require to build generating capacity according to maximum load.This has caused the superfluous and waste of a large amount of generating capacities on the one hand, and on the other hand, power department is had to again usually in the brownout of peak of power consumption period.Therefore press for economy, reliably, the electric power energy-storage system matches with it efficiently.What is more important, electric power energy-storage system are to restrict one of extensive most important bottleneck that utilizes of renewable energy sources at present.Main renewable energy sources as wind energy, solar energy, tidal energy etc., all is the intermittent type energy at present, how to utilize energy storage technology with these intermittent type energy " splicing ", is to improve the problem that the renewable energy sources ratio must solve.Simultaneously, the electric power energy-storage system still is the key technology of distributed energy resource system.Distributed energy resource system adopts the great quantity of small distributed power system to replace the electric power system of conventional large-scale centralized formula, has advantages such as comprehensive utilization of energy, the high and low pollution of the thermal efficiency.But the system failure rate that causes owing to reasons such as circuit, operations simultaneously can be higher than the electric power system of conventional large-scale centralized formula.And because the capacity of system is less, the fluctuation of system loading also will significantly increase.Therefore, adopting the electric power energy-storage system is the measure that distributed energy resource system must be considered as load equalizer and standby power supply.
At present existing electric power energy storage technology comprises the energy storage of drawing water, compressed-air energy storage, storage battery, superconduction magnetic energy, flywheel and electric capacity etc.But owing to reasons such as capacity, energy storage cycle, energy density, efficiency for charge-discharge, life-span, operating cost, environmental protection, only draw water two kinds of energy storage and the compressed-air energy storages that in the large scale business system, have moved at present.The energy-storage system that draws water is delivered to elevated reservoir with water from the low level reservoir by water pump at low power consumption, thereby the potential energy that electric energy is converted into water is stored, and in peak of power consumption, water is disposed to the low level reservoir from elevated reservoir and drives the water turbine generating.The energy-storage system that the draws water advantages such as maturation, efficient height, capacity are big, the energy storage cycle is unrestricted that possess skills are present widely used electric power energy-storage systems, and its electric motor power is 99% of world's electric power energy-storage system total installation of generating capacity.But the large-scale energy-storage system that draws water needs special geographical condition to build two reservoirs up and down, and the construction period very long (general about 7～15 years), initial investment is huge.More thorny is, building large reservoir can large size flood vegetation even city, causes ecology and immigration problem, and therefore building the large-scale energy-storage system that draws water has been subjected to increasing restriction.
The model utility content
The purpose of this utility model provides a kind of miniature energy-storage system that draws water, to solve the subject matter that the large-scale energy-storage system that draws water faces, promptly to the special geographical conditions dependence problem of (comprising large reservoir and high drop landform).
For achieving the above object, the miniature energy-storage system that draws water that the utility model provides utilizes in the city the particularly drop of high-rise of building, and makes the energy-storage system microminiaturization of drawing water.
Specifically, the miniature energy-storage system that draws water of the present utility model comprises miniature energy storage unit, valve, wet pit and the waterline of drawing water; Wherein:
The miniature energy storage unit that draws water is four machine formulas energy storage unit, three machine formulas energy storage unit or the reversible energy storage units that draw water that draw water that draw water; Wherein:
The four machine formulas energy storage unit that draws water comprises motor, water pump, water turbine and generator; The transmission shaft of motor and water pump is affixed, and the transmission shaft of generator and water turbine is affixed.
The three machine formulas energy storage unit that draws water comprises water pump, water turbine and reversible motor generator; Water pump and water turbine are all affixed with the transmission shaft of reversible motor generator.
The reversible energy storage unit that draws water comprises reversible pump turbine and reversible motor generator; The transmission shaft of reversible pump turbine and reversible motor generator is affixed.
On ground or the underground low level wet pit that is equipped with, the building top layer is equipped with high-level reservoir; The low level wet pit interlinks with the energy storage unit that draws water, and the energy storage unit that draws water interlinks through pipeline and high-level reservoir.
The described miniature energy-storage system that draws water, wherein driving power is wherein one or more of conventional power plant low ebb electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, water power or tidal power generation.
The described miniature energy-storage system that draws water is wherein on the surface-based ground of low level wet pit or in the underground basement.
The described miniature energy-storage system that draws water, wherein building is residential architecture, public building, industrial building and farm buildings.
The described miniature energy-storage system that draws water, wherein building is residential building, dormitory building, office building, shop, hotel, Movie theater, gymnasium, Exhibition hall, hospital, factory building, warehouse, livestock usefulness room, water tower, television tower and monumental building.
The described miniature energy-storage system that draws water, the wherein miniature energy storage unit that draws water, total head or drop are between 6 meters to 1000 meters.
When the described miniature energy-storage system that draws water, the wherein miniature energy storage unit that draws water were many water pumps, water turbine or reversible pump turbine, many water pumps, water turbine or reversible pump turbines were series connection form or parallel form; In the parallel form, each split axle and main driving axle are dynamically connected.
The described miniature energy-storage system that draws water, wherein water pump or reversible pump turbine, water pump is that impeller pump comprises axial flow, mixed-flow and centrifugal, or positive displacement pump comprises gear pump, screw pump, Roots pump and sliding vane pump.
The described miniature energy-storage system that draws water, wherein water turbine or reversible pump turbine, water turbine is that reaction turbine comprises axial flow, mixed-flow, diagonal flow type and tubular, or impulse turbine comprises water bucket type, tilt-impulse type and double click type.
Advantage of the present utility model is: utilize in the city the particularly drop of high-rise of building, and make the energy-storage system microminiaturization of drawing water, thereby solve the large-scale dependence problem of energy-storage system to large reservoir and high drop landform of drawing water.And have that cost is low, the energy storage cycle is unrestricted, be applicable to all kinds power supply, advantage such as environmentally friendly, have wide use prospect.
Description of drawings
Fig. 1 is embodiment's 1 structural representation of the miniature energy-storage system that draws water of the utility model;
Fig. 2 is embodiment's 2 structural representations of the miniature energy-storage system that draws water of the utility model;
Fig. 3 is embodiment's 3 structural representations of the miniature energy-storage system that draws water of the utility model;
Fig. 4 is embodiment's 4 structural representations of the miniature energy-storage system that draws water of the utility model.
Embodiment
The utility model when energy storage by water pump with water from ground or underground conservation pool (low level wet pit) deliver to building top layer wet pit (high-level reservoir), thereby the potential energy that electric energy is converted into water is stored.When power consumption, water is disposed to the low level wet pit from high-level reservoir and drives the water turbine generating.Utilize in the city the particularly drop of high-rise of building, and make the energy-storage system microminiaturization of drawing water, thereby solve the large-scale dependence problem of energy-storage system of drawing water large reservoir and high drop landform.
Technical solution of the present utility model is:
A kind of miniature energy-storage system that draws water comprises miniature energy storage unit, valve, wet pit and the waterline of drawing water; Wherein:
The miniature energy storage unit that draws water is four machine formulas energy storage unit, three machine formulas energy storage unit or the reversible energy storage units that draw water that draw water that draw water.
The four machine formulas energy storage unit that draws water comprises motor, water pump, water turbine and generator; The transmission shaft of motor and water pump is affixed, and the transmission shaft of generator and water turbine is affixed.
The three machine formulas energy storage unit that draws water comprises water pump, water turbine and reversible motor generator; Water pump and water turbine are all affixed with the transmission shaft of reversible motor generator.
The reversible energy storage unit that draws water comprises reversible pump turbine and reversible motor generator; The transmission shaft of reversible pump turbine and reversible motor generator is affixed.
The miniature energy storage unit that draws water can comprise one or more water pump, one or more water turbine or one or more reversible pump turbine.
(or underground) and building top layer are equipped with two wet pits on ground.
The miniature energy storage unit that draws water interlinks through waterline and wet pit.
Be provided with valve in pipeline, valve is used for the working method of controlled water flow direction and system.
Its flow process is:
During energy storage, utilize the motoring water pump water to be delivered to the high-level reservoir storage on building top through waterline from the low level wet pit; When releasing energy, water flows to the low level wet pit from high-level reservoir through waterline, drives water turbine and also drives generator for electricity generation.
The described miniature energy-storage system that draws water, its driving power are wherein one or more of conventional power plant low ebb electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, water power or tidal power generation.
The described miniature energy-storage system that draws water, its thermal energy storage process is enabled when electric power low ebb (at a low price), renewable energy power generation redundancy; Exoergic process is at peak of power consumption (at high price), electric power accident, enable when renewable energy power generation is undesirable.
The described miniature energy-storage system that draws water, its described building is residential architecture, public building, industrial building and farm buildings.Comprise residential building, dormitory building, office building, shop, hotel, Movie theater, gymnasium, Exhibition hall, hospital, factory building, warehouse, livestock usefulness room, water tower, television tower and monumental building.
The described miniature energy-storage system that draws water, its low level wet pit is installed in ground or building is underground; Its high-level reservoir is installed in the building top layer.
The described miniature energy-storage system that draws water, its described miniature energy storage unit that draws water, total head or drop are between 6 meters to 1000 meters; When being many water pumps, water turbine or reversible pump turbine, many water pumps, water turbine or reversible pump turbines are series connection form or parallel form; In the parallel form, each split axle and main driving axle are dynamically connected.
The described miniature energy-storage system that draws water, its described water pump or reversible pump turbine, water pump are that impeller pump comprises axial flow, mixed-flow and centrifugal, or positive displacement pump comprises gear pump, screw pump, Roots pump and sliding vane pump.
The described miniature energy-storage system that draws water, its described water turbine or reversible pump turbine, water turbine are that reaction turbine comprises axial flow, mixed-flow, diagonal flow type and tubular, or impulse turbine comprises water bucket type, tilt-impulse type and double click type.
The described miniature energy-storage system that draws water during its energy storage, the flow by control of pump, is closed down the part water pump and is regulated energy storage capacity.
The described miniature energy-storage system that draws water, its release can the time, the flow by the control water turbine, close down part water wheels machine-processed rice and regulate energy storage capacity.
The miniature energy-storage system that draws water of the present utility model, adopt low ebb (at a low price) electric energy by water pump with water from ground or underground conservation pool (low level wet pit) deliver to building top layer wet pit (high-level reservoir), thereby the potential energy that electric energy is converted into water stores (energy storage), in peak of power consumption, water is disposed to the low level wet pit from high-level reservoir and drives water turbine generating (releasing energy).It utilizes in the city the particularly drop of high-rise of building, and makes the energy-storage system microminiaturization of drawing water, thereby solves the large-scale dependence problem of energy-storage system to large reservoir and high drop landform of drawing water.Have simultaneously that cost is low, the energy storage cycle is unrestricted, be applicable to all kinds power supply, advantage such as environmentally friendly.
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is the utility model embodiment 1 the four machine formulas energy storage unit that draws water.Wherein, low level wet pit 1 is installed on the ground 8, and high-level reservoir 6 is installed on building 7 top layers.Draw water energy storage unit 2 of low level wet pit 1 and four machine formulas interlinks through pipeline, and the four machine formulas energy storage unit 2 that draws water interlinks with high-level reservoir 6 through valve 3,4 and pipeline 5.
Wherein the four machine formulas energy storage unit 2 that draws water comprises: a port of a water pump 21 and a water turbine 22 is connected respectively on the low level wet pit 1, the another port connecting line of a water pump 21 and a water turbine 22; One motor 23 is affixed with the transmission shaft of water pump 21, and generator 24 is affixed with the transmission shaft of water turbine 22.
During energy storage, valve 3 is opened, and valve 4 is closed, and low ebb (at a low price) electricity drives the draw water motor 23 of energy storage unit 2 of four machine formulas and starts water pumps 21, by water pump 21 water is delivered to high-level reservoir 6 by pipeline 5.Thermal energy storage process finishes, and valve 3 is closed.Release can the time, valve 4 is opened, valve 3 is closed, water is disposed to low level wet pit 1 and draw water generator 24 generatings the energy storage unit 2 of the four machine formulas that drive from high-level reservoir 6 through pipeline 5.Exoergic process finishes, and valve 4 is closed.
Generally speaking, operation when energy storage is different with exoergic process, during energy storage, four machine formulas the draw water water pump 21 of energy storage unit 2 and motor 23 work, water turbine 22 and generator 24 are closed.Release can the time then opposite, the draw water water pump 21 and the motor 23 of energy storage unit 2 of four machine formulas cuts out water turbine 22 and generator 24 work.
Fig. 2 is the utility model embodiment 2 the three machine formulas energy storage units that draw water.The three machine formulas of the present utility model energy-storage system that draws water, its agent structure is identical with embodiment 1, but adopts the three machine formulas energy storage unit that draws water to replace four machine formulas among the embodiment 1 energy storage unit that draws water.The three machine formulas energy storage unit that draws water comprises water pump 21, water turbine 22 and reversible motor generator 25 (the reversible motor generator is a known technology, and the utility model is not described in detail).Water pump 21 and water turbine 22 are all affixed with the transmission shaft of reversible motor generator 25.Low level wet pit 1 and three machine formulas draw water energy storage unit 2 through pipeline interlink, the three machine formulas energy storage unit 2 that draws water interlinks through valve 3,4 and pipeline 5 and high-level reservoir 6.Low level wet pit 1 is installed on the ground 7, and high-level reservoir 6 is installed on building 7 top layers.During energy storage, valve 3 is opened, and valve 4 is closed, and low ebb (at a low price) electricity drives the reversible motor generator that three machine formulas draw water in the energy storage unit 2 water is delivered to high-level reservoir 6 by pipeline 5.Thermal energy storage process finishes, and valve 3 is closed.Release can the time, valve 4 is opened, valve 3 is closed, water is disposed to low level wet pit 1 and the three machine formulas that drive energy storage unit 2 generating of drawing water from high-level reservoir 6 through pipeline 5.Exoergic process finishes, and valve 4 is closed.Generally speaking, operation when energy storage is different with exoergic process, during energy storage, three machine formulas the draw water water pump 21 of energy storage unit 2 and 25 work of reversible motor generator, water turbine 22 cuts out.Release can the time then opposite, the draw water water pump 21 of energy storage unit 2 of three machine formulas cuts out water turbine 23 and 25 work of reversible motor generator.
Embodiment 3
Fig. 3 is the utility model embodiment 3 the reversible energy storage unit that draws water.The reversible of the present utility model energy-storage system that draws water, its agent structure is identical with embodiment 1, just adopts the reversible energy storage unit that draws water to replace four machine formulas among the embodiment 1 energy storage unit that draws water.The reversible energy storage unit 2 that draws water comprises reversible pump turbine 26 and reversible motor generator 25 (reversible pump turbine and reversible motor generator are known technology, and the utility model is not described in detail).Reversible pump turbine 26 is affixed with the transmission shaft of reversible motor generator 25.Draw water energy storage unit 2 of low level wet pit 1 and reversible interlinks through pipeline, and the reversible energy storage unit 2 that draws water interlinks with high-level reservoir 5 through valve 3 and pipeline 4.Low level wet pit 1 is installed on the ground 7, and high-level reservoir 5 is installed on building 6 top layers.During energy storage, valve 3 is opened, and low ebb (at a low price) electricity drives draw water reversible pump turbine 26 in the energy storage unit 2 of reversible, and water is delivered to high-level reservoir 5 by pipeline 4.Thermal energy storage process finishes, and valve 3 is closed.Release can the time, valve 3 is opened, water is disposed to low level wet pit 1 and drives draw water reversible motor generator 25 generatings the energy storage unit 2 of reversible through pipeline 4 from high-level reservoir 5.Exoergic process finishes, and valve 3 is closed.Generally speaking, operation when energy storage is different with exoergic process, during energy storage, the draw water water pump-electric motor mode that is operated in of energy storage unit 2 of reversible.Release can the time then opposite, the draw water water turbine-generator mode that is operated in of energy storage unit 2 of reversible.
Fig. 4 is underground low level wet pit of the utility model embodiment 4.The energy-storage system of underground low level wet pit of the present utility model, its agent structure is identical with aforementioned three embodiments, just adopt underground low level wet pit to replace ground low level wet pit among above-mentioned three embodiments, take up an area of and increase drop between high low level wet pit to save ground.
The miniature energy-storage system that draws water wherein can adopt any among above-mentioned three embodiments, promptly can adopt four machine formulas energy storage unit, the three machine formulas energy storage unit that draws water that draws water, and the reversible energy storage unit that draws water, its workflow and principle are also identical with above-mentioned three embodiments.Fig. 4 is to be example with the reversible energy storage unit that draws water.
Claims (9)
1. the miniature energy-storage system that draws water comprises miniature energy storage unit, valve, wet pit and the waterline of drawing water; It is characterized in that:
The miniature energy storage unit that draws water is four machine formulas energy storage unit, three machine formulas energy storage unit or the reversible energy storage units that draw water that draw water that draw water; Wherein:
The four machine formulas energy storage unit that draws water comprises motor, water pump, water turbine and generator; The transmission shaft of motor and water pump is affixed, and the transmission shaft of generator and water turbine is affixed;
The three machine formulas energy storage unit that draws water comprises water pump, water turbine and reversible motor generator; Water pump and water turbine are all affixed with the transmission shaft of reversible motor generator;
The reversible energy storage unit that draws water comprises reversible pump turbine and reversible motor generator; The transmission shaft of reversible pump turbine and reversible motor generator is affixed;
On ground or the underground low level wet pit that is equipped with, the building top layer is equipped with high-level reservoir; The low level wet pit interlinks with the energy storage unit that draws water, and the energy storage unit that draws water interlinks through pipeline and high-level reservoir.
2. the miniature energy-storage system that draws water according to claim 1 is characterized in that: driving power is wherein one or more of conventional power plant low ebb electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, water power or tidal power generation.
3. the miniature energy-storage system that draws water according to claim 1 is characterized in that: on the surface-based ground of low level wet pit or in the underground basement.
4. the miniature energy-storage system that draws water according to claim 1 is characterized in that: described building is residential architecture, public building, industrial building and farm buildings.
5. according to claim 1 or the 4 described miniature energy-storage systems that draw water, it is characterized in that: described building is residential building, dormitory building, office building, shop, hotel, Movie theater, gymnasium, Exhibition hall, hospital, factory building, warehouse, livestock usefulness room, water tower, television tower and monumental building.
6. the miniature energy-storage system that draws water according to claim 1 is characterized in that: the described miniature energy storage unit that draws water, total head or drop are between 6 meters to 1000 meters.
7. according to claim 1 or the 6 described miniature energy-storage systems that draw water, it is characterized in that: when the described miniature energy storage unit that draws water was many water pumps, water turbine or reversible pump turbine, many water pumps, water turbine or reversible pump turbines were series connection form or parallel form; In the parallel form, each split axle and main driving axle are dynamically connected.
8. the miniature energy-storage system that draws water according to claim 7, it is characterized in that: described water pump or reversible pump turbine, water pump is that impeller pump comprises axial flow, mixed-flow and centrifugal, or positive displacement pump comprises gear pump, screw pump, Roots pump and sliding vane pump.
9. the miniature energy-storage system that draws water according to claim 7, it is characterized in that: described water turbine or reversible pump turbine, water turbine is that reaction turbine comprises axial flow, mixed-flow, diagonal flow type and tubular, or impulse turbine comprises water bucket type, tilt-impulse type and double click type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206323009U CN201851266U (en) | 2010-11-24 | 2010-11-24 | Miniature water-pumping energy-storage system |
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| CN2010206323009U CN201851266U (en) | 2010-11-24 | 2010-11-24 | Miniature water-pumping energy-storage system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477931A (en) * | 2010-11-24 | 2012-05-30 | 中国科学院工程热物理研究所 | Minitype water pumping energy storage system |
| CN102953913A (en) * | 2011-08-31 | 2013-03-06 | 首瑞（北京）投资管理集团有限公司 | Upper liquid accumulation system for liquid gravitational potential energy storage power station |
| ES2423079R1 (en) * | 2011-11-08 | 2013-12-16 | Univ La Rioja | MICRO HYDROELECTRIC ENERGY GENERATION DEVICE FOR BUILDINGS AND ENERGY EFFICIENCY PROCEDURE |
| CN106194690A (en) * | 2016-08-30 | 2016-12-07 | 阳光电源股份有限公司 | Control device, current transformer, photovoltaic water pump system and control method thereof |
-
2010
- 2010-11-24 CN CN2010206323009U patent/CN201851266U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477931A (en) * | 2010-11-24 | 2012-05-30 | 中国科学院工程热物理研究所 | Minitype water pumping energy storage system |
| CN102953913A (en) * | 2011-08-31 | 2013-03-06 | 首瑞（北京）投资管理集团有限公司 | Upper liquid accumulation system for liquid gravitational potential energy storage power station |
| ES2423079R1 (en) * | 2011-11-08 | 2013-12-16 | Univ La Rioja | MICRO HYDROELECTRIC ENERGY GENERATION DEVICE FOR BUILDINGS AND ENERGY EFFICIENCY PROCEDURE |
| CN106194690A (en) * | 2016-08-30 | 2016-12-07 | 阳光电源股份有限公司 | Control device, current transformer, photovoltaic water pump system and control method thereof |
| CN106194690B (en) * | 2016-08-30 | 2018-12-28 | 阳光电源股份有限公司 | Control device, current transformer, photovoltaic water pump system and its control method |
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Granted publication date: 20110601 |