CN107171636A - A kind of photovoltaic module cooling system and control method - Google Patents
A kind of photovoltaic module cooling system and control method Download PDFInfo
- Publication number
- CN107171636A CN107171636A CN201710513261.7A CN201710513261A CN107171636A CN 107171636 A CN107171636 A CN 107171636A CN 201710513261 A CN201710513261 A CN 201710513261A CN 107171636 A CN107171636 A CN 107171636A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic module
- temperature
- water pump
- module cooling
- circulation
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000002826 coolant Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 206010044565 Tremor Diseases 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- 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
- Y02B10/10—Photovoltaic [PV]
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of photovoltaic module cooling system and control method, in order to solve effectively to reduce by photovoltaic component back plate temperature, the energy that photovoltaic component back plate is collected is recycled, system installation cost is low and operational simplicity, and system safety problem, the present invention is compared with prior art with advantages below：Influenceed the generating of photovoltaic module to reduce by lower temperature rise is shined upon when being prevented effectively from photovoltaic module generating, improve the generated energy of photovoltaic module；The pressure requirements of circulation conduit are low, can use common conduit, and system mounting means is convenient, and cost is low；Photovoltaic module cooling bladder is flexible, extremely trembling with fear under weather, bear the pressure of the heat expansion cooling of coolant, avoid that photovoltaic module causes hidden splits, the energy for cooling and collecting by photovoltaic module is utilized, reduce Household water heating and to the use of energy, realize family energy-conservation, the fire threat that can effectively alleviate photovoltaic module hot spot effect and bring.
Description
Technical field
The present invention relates to cell panel field of cooling, more particularly to a kind of photovoltaic module cooling system and controlling party
Method.
Background technology
In actual applications, its power generation performance is influenceed larger to photovoltaic generating system by natural environmental condition, wherein system
The operating temperature of the photovoltaic module of critical piece is to influence one of key factor of photovoltaic generating system performance.
The mainly silicon systems photovoltaic module of current large scale investment commercial applications：Monocrystalline silicon component, polysilicon members and
Amorphous silicon module, influence of the temperature to photovoltaic module is mainly manifested in open-circuit voltage, short circuit current flow and the peak power of component
Parameter variation with temperature and change.The open-circuit voltage of photovoltaic module is reduced with the rise of temperature；The short circuit of photovoltaic module
Electric current is raised with the rise of temperature；The peak power of photovoltaic module is raised and declined with temperature.The rise of temperature is brought therewith
Be exactly photovoltaic module efficiency decline；Temperature often raises 1 DEG C, peak power loss 0.35%--0.45%；For example it is operated in
20 DEG C of photovoltaic module, it is higher by 20% in the case of exporting peak power than being operated in 70 DEG C；It can be seen that temperature is to photovoltaic group
The influence of part is very big.
The implementation method of currently available technology is the circulating cooling system and sky constituted using nitrogen pressure air bag and water pump
Gas carries out heat exchange, so as to the temperature of solar panel be reduced, to extend the service life of solar panel
(referenced patents CN104201985A).
Control of the nitrogen pressure air bag to current is used in publication, and the water that circulating-heating is crossed enters with surrounding air
Row heat exchange, heat conduction velocity and thermal conduction effect are poor, and the water temperature after air cooler is higher than air themperature, and cold sky
The temperature of device annex is also very high；Air themperature is again high more than running water (underground water) temperature, and further drop is difficult in practical application
The temperature of low photovoltaic module；Using water pump has been arrived in whole system, if uncontrolled strategy, when need not cool down,
Water pump is also operated, and can waste much electricity；The application method of nitrogen pressure air bag is numerous and diverse；There is pressure to want nitrogen in addition
Ask, safety problem also can not be ignored.
The content of the invention
The purpose of the present invention is on the basis of the disclosed cooling system applied to solar panel, for cooling system
Control process of uniting and its method, in order to solve effectively to reduce by photovoltaic component back plate temperature, are collected to photovoltaic component back plate
Energy is recycled, and system installation cost is low and operational simplicity, and system safety problem, and the present invention proposes one
Plant photovoltaic module cooling system and control method.
The present invention is achieved by the following technical solutions：A kind of photovoltaic module cooling system, the system includes photovoltaic group
It is part cooling bladder, photovoltaic module temperature sensor, control unit, outer circulation conduit, the first valve, the second valve, the 3rd valve, outer
Circulating cooling liquid adding set, external circulation water pump, heat-exchange device, interior circulation conduit, internal circulation water pump, water storage device and close
The water storage device temperature sensor of envelope；
Wherein, the external circulating system is that photovoltaic module cooling bladder is close on photovoltaic component back plate, each photovoltaic
Component cooling bladder head and the tail are connected into a string by outer circulation conduit, and with the first valve, the second valve, the 3rd valve, follow outside
Ring liquid adding set, external circulation water pump and heat exchange unit connection, finally with the other end phase of photovoltaic module cooling bladder string
Connection；Outer circulation coolant constitutes a complete circulatory system；
The internal circulation system is by interior circulation conduit and sealed water storage device, internal circulation water pump by heat-exchange system
Connection；What internal circulation system was physically entirely isolated with external circulating system；
The control system is temperature sensor signal line, the water storage device reclaimed water that will be drawn in photovoltaic module cooling bladder
Temperature sensor signal line, and external circulation water pump and internal circulation water pump control line are connected to control unit.
It is preferred that, wherein the photovoltaic module cooling bladder is made of using the good silica gel of heat conductivility.
It is preferred that, the outer circulation conduit is pvc pipe.
Whole cooling system gathers photovoltaic module cooling bladder temperature and sealed water storage device reclaimed water by control unit
Temperature control the work of external circulation water pump and internal circulation water pump.
For a kind of photovoltaic module cooling system, its control method is：
(1) outer circulation start-up temperature Ts is set, and outer circulation stops temperature Tp；
(2) photovoltaic module cooling bladder temperature Tm, and water storage device water temperature T w are gathered；
(3) by judging whether pump working flag bit PSF is 0；
(4) if water pump is not started working, i.e. when PSF is 0, previously set if the temperature Tm of photovoltaic module cooling bladder is more than
Fixed outer circulation start-up temperature Ts, or the difference of the water temperature T w in photovoltaic module cooling bladder temperature Tm and water storage device are more than Δ T,
External circulation water pump and internal circulation water pump will be started；Otherwise controller continues to monitor the temperature Tm of volt component cooling bladder；
If water pump has started, i.e. when PSF is 1, if if the temperature Tm of photovoltaic module cooling bladder is less than first
The difference that the outer circulation of preceding setting stops the water temperature T w in temperature Tp, and photovoltaic module cooling bladder temperature Tm and water storage device is less than
0.5 Δ T, will stop external circulation water pump and internal circulation water pump；Otherwise controller continues to monitor the temperature Tm of volt component cooling bladder.
It is preferred that, in step (4), the difference of the water temperature T w in the photovoltaic module cooling bladder temperature Tm and water storage device is more than
ΔT；
Wherein, Δ T is setting value.
The strategy of control unit of the present invention：When photovoltaic module temperature is low, external circulation water pump and interior circulation water are not started
Pump；When photovoltaic module temperature reaches threshold value, control unit starts external circulation water pump and internal circulation water pump is operated, and then passes through
Heat-exchange device completes energy exchange.At the time of photovoltaic module temperature is also that solar irradiation is most strong when high, now photovoltaic
Component should generated output it is maximum, but the rise of photovoltaic module temperature but have impact on the efficiency that component generates electricity, and now start water
Pump circulation lowers the temperature of photovoltaic module, the part energy for providing efficiency can be used for into the operation of water pump, so can
Photovoltaic module is allowed to cool and reach higher generating efficiency, heating that again can be by the heat of photovoltaic module to domestic water is reduced
Energy needed for being heated in life to water.
The advantage for controlling the operation of water pump in this programme using water temperature in water storage device is to work as photovoltaic module temperature much
During higher than temperature inside water storage device, now start external circulation water pump and internal circulation water pump, can further reduce the component back of the body
The temperature of plate, can further improve generated energy.
Present invention mainly solves photovoltaic module cooling system control method, for photovoltaic component back plate collect energy
Heat exchange is carried out with running water (underground water), photovoltaic component back plate temperature drop to reasonable temperature can be increased by so doing
Photovoltaic module generating efficiency, while reducing photovoltaic module hot spot and causing the risk of fire；Running water (underground water) is heated to
Certain temperature, so that family life is used, use of the reduction life to electric energy；Reduce the operability installed to cooling system
And cost；Carried out for system capacity on the basis of rationally utilizing, and propose and reached rationally in solar components backboard temperature
The control strategy of temperature.
The key innovations of the present invention are：
(1) generating of photovoltaic module is influenceed to subtract by lower temperature rise is shined upon when, being prevented effectively from photovoltaic module generating
It is few, improve the generated energy of photovoltaic module；
(2), the pressure requirements of circulation conduit are low, can use common conduit, and system mounting means is convenient, and cost is low；
(3), photovoltaic module cooling bladder is flexible, is extremely trembling with fear under weather, bears the pressure of the heat expansion cooling of coolant, keeps away
That exempts from that photovoltaic module causes hidden splits；
(4) energy for, cooling and collecting by photovoltaic module is utilized, and reduces Household water heating and energy is made
With realizing family energy-conservation；
(5) fire threat that, can effectively alleviate photovoltaic module hot spot effect and bring.
Brief description of the drawings
Fig. 1 is a kind of system principle diagram of photovoltaic module cooling system provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of the photovoltaic module cooling bladder of photovoltaic module cooling system provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of control method schematic flow sheet of photovoltaic module cooling system provided in an embodiment of the present invention.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
As shown in Figure 1, 2, a kind of photovoltaic module cooling system that the present embodiment is provided, the system is cooled down by photovoltaic module
Capsule, photovoltaic module temperature sensor, control unit, outer circulation conduit, the first valve, the second valve, the 3rd valve, outer circulation are cold
But liquid adding set, external circulation water pump, heat-exchange device, interior circulation conduit, internal circulation water pump, water storage device and sealedly storage
Water installations temperature sensor is constituted.
The present embodiment is that photovoltaic module cooling bladder is close on photovoltaic component back plate, and each photovoltaic module cooling bladder is first
Pipe joint at tail is connected into a string using pvc pipe, and is added with the first valve, the second valve, the 3rd valve, outer circulation liquid
Feeder apparatus, external circulation water pump and heat exchange unit connection, finally the other end with photovoltaic module cooling bladder string is connected, structure
Into the circulatory system of a closing.First valve and the second valve are to be close to installation, and close to outer circulation liquid addition dress
The exit put.
Coolant selects the coolant of good heat conduction effect according to environmental requirement, and wherein photovoltaic module cooling bladder is to use heat conduction
Silica gel of good performance is made, and the adding procedure of coolant is as described below, closes the second valve, opens the first valve and the 3rd valve
Door, adds coolant outward at circulation fluid adding set, when liquid to be cooled flows through external circulation water pump, starts external circulation water pump, allows
Coolant sufficiently flows into photovoltaic module cooling bladder, is finally observed at the first valve, will during coolant the first valve of stable outflow
The second valve is opened, the first valve and the 3rd valve is closed, now outer circulation coolant adding procedure is completed.
Internal circulation system is to connect heat-exchange system by interior circulation conduit and sealed water storage device, internal circulation water pump
Connect.What internal circulation system was physically entirely isolated with external circulating system, it is ensured that the water in interior circulation is not contaminated, so
According to real needs suitable coolant can be selected to be used as outer circulation liquid.
Control system be will be drawn in photovoltaic module cooling bladder temperature sensor signal line, in water storage device water temperature
Sensor signal lines, and external circulation water pump and internal circulation water pump control line are connected to control unit.Whole cooling system passes through
Control unit gather the temperature of water in photovoltaic module cooling bladder temperature and sealed water storage device control external circulation water pump and
The work of internal circulation water pump.
As shown in figure 3, control strategy specific implementation method described in the present embodiment is as described below：Set external circulation water pump and
The temperature Ts of the internal circulation water pump startup work and temperature Tp being stopped.Control unit real-time sampling photovoltaic module cooling side
Water temperature T w in temperature Tm and water storage device.Next operation is selected by judging pump working flag bit PSF.
If water pump is not started working, i.e. when PSF is 0, if the temperature Tm of photovoltaic module cooling bladder is more than earlier set
Starting mode of pump work temperature Ts, or the difference of water temperature T w in Tm and water storage device is more than Δ T, wherein, the Δ T is to set
Definite value, the extraneous temperature difference according to present in photovoltaic module application different geographical is self-defined to be set according to external environment, to improve
Energy utilization rate, will start external circulation water pump and internal circulation water pump；Otherwise controller continues to monitor the temperature of volt component cooling bladder
Tm。
If water pump has started, i.e. when PSF is 1, if if the temperature Tm of photovoltaic module cooling bladder is less than first
The temperature Ts that the water pump of preceding setting is stopped, and the difference of the water temperature T w in Tm and water storage device is less than 0.5 Δ T, will stop
External circulation water pump and internal circulation water pump；Otherwise controller continues to monitor the temperature Tm of volt component cooling bladder.
The advantage for controlling the operation of water pump in this programme using water temperature in water storage device is to work as photovoltaic module temperature much
During higher than temperature inside water storage device, now start external circulation water pump and internal circulation water pump, can further reduce the component back of the body
The temperature of plate, can further improve generated energy.
Control unit strategy：When photovoltaic module temperature is low, do not start external circulation water pump and internal circulation water pump；Photovoltaic module temperature
When degree reaches threshold value, control unit starts external circulation water pump and internal circulation water pump is operated, then complete by heat-exchange device
Into energy exchange.At the time of photovoltaic module temperature is also that solar irradiation is most strong when high, now photovoltaic module should generate electricity
Power is maximum, but the rise of photovoltaic module temperature but have impact on the efficiency of component generating, now starts water pump circulation by photovoltaic
The temperature of component lowers, and the part energy for providing efficiency can be used for into the operation of water pump, can so allow photovoltaic module to drop
Temperature and reach higher generating efficiency, heating that again can be by the heat of photovoltaic module to domestic water reduces and water is added in life
The required energy of heat.
Present invention mainly solves photovoltaic module cooling system control method, for photovoltaic component back plate collect energy
Heat exchange is carried out with running water (underground water), photovoltaic component back plate temperature drop to reasonable temperature can be increased by so doing
Photovoltaic module generating efficiency, while reducing photovoltaic module hot spot and causing the risk of fire；Running water (underground water) is heated to
Certain temperature, so that family life is used, use of the reduction life to electric energy；Reduce the operability installed to cooling system
And cost；Carried out for system capacity on the basis of rationally utilizing, and propose and reached rationally in solar components backboard temperature
The control strategy of temperature.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (3)
1. a kind of photovoltaic module cooling system, it is characterised in that the system includes photovoltaic module cooling bladder, photovoltaic module temperature and passed
Sensor, control unit, outer circulation conduit, the first valve, the second valve, the 3rd valve, outer circulation coolant adding set, follow outside
Ring water pump, heat-exchange device, interior circulation conduit, internal circulation water pump, water storage device and sealed water storage device temperature sensor；
Wherein, the external circulating system is that photovoltaic module cooling bladder is close on photovoltaic component back plate, each photovoltaic module
Cooling bladder head and the tail connected into a string by outer circulation conduit, and with the first valve, the second valve, the 3rd valve, outer circulation liquid
Adding set, external circulation water pump and heat exchange unit connection, finally the other end with photovoltaic module cooling bladder string is connected；
Outer circulation coolant constitutes a complete circulatory system；
The internal circulation system is to be connected interior circulation conduit and sealed water storage device, internal circulation water pump by heat-exchange system
Connect；What internal circulation system was physically entirely isolated with external circulating system；
The control system is temperature sensor signal line, the temperature of water storage device reclaimed water that will be drawn in photovoltaic module cooling bladder
Sensor signal lines, and external circulation water pump and internal circulation water pump control line are connected to control unit.
2. a kind of photovoltaic module cooling system according to claim 1, it is characterised in that：Wherein described photovoltaic module cooling
Capsule is made of using the good silica gel of heat conductivility.
3. a kind of photovoltaic module cooling system according to claim 1, it is characterised in that：The outer circulation conduit is PVC
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513261.7A CN107171636B (en) | 2017-06-29 | 2017-06-29 | Photovoltaic module cooling system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513261.7A CN107171636B (en) | 2017-06-29 | 2017-06-29 | Photovoltaic module cooling system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107171636A true CN107171636A (en) | 2017-09-15 |
| CN107171636B CN107171636B (en) | 2023-10-27 |
Family
ID=59828098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710513261.7A Active CN107171636B (en) | 2017-06-29 | 2017-06-29 | Photovoltaic module cooling system and control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107171636B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890482A (en) * | 2021-10-08 | 2022-01-04 | 阳光新能源开发有限公司 | Cooling control method and system of photovoltaic module and computer storage medium |
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| CN207265978U (en) * | 2017-06-29 | 2018-04-20 | 安徽大恒能源科技有限公司 | A kind of photovoltaic module cooling system |
-
2017
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| JP2002052922A (en) * | 2000-08-09 | 2002-02-19 | Toyota Motor Corp | Temperature control device for vehicle |
| CN202405295U (en) * | 2011-11-04 | 2012-08-29 | 新奥科技发展有限公司 | Active cooling solar energy photovoltaic power generation system |
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| CN113890482A (en) * | 2021-10-08 | 2022-01-04 | 阳光新能源开发有限公司 | Cooling control method and system of photovoltaic module and computer storage medium |
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| Publication number | Publication date |
|---|---|
| CN107171636B (en) | 2023-10-27 |
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