CN109980681A - The generated energy optimization system of photovoltaic plant - Google Patents
The generated energy optimization system of photovoltaic plant Download PDFInfo
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- CN109980681A CN109980681A CN201910165578.5A CN201910165578A CN109980681A CN 109980681 A CN109980681 A CN 109980681A CN 201910165578 A CN201910165578 A CN 201910165578A CN 109980681 A CN109980681 A CN 109980681A
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- photovoltaic module
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- 238000005457 optimization Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 239000000498 cooling water Substances 0.000 claims abstract description 29
- 230000002265 prevention Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000005855 radiation Effects 0.000 claims description 16
- 238000005286 illumination Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 208000032953 Device battery issue Diseases 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 241000237858 Gastropoda Species 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 16
- 230000005611 electricity Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- H02J3/383—
-
- 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
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- 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
- H02S40/10—Cleaning arrangements
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention relates to technical field of photovoltaic power generation, are related to a kind of generated energy optimization system of photovoltaic plant.The generated energy optimization system of the photovoltaic plant, including, for absorbing sunlight, and solar radiant energy is switched through to the photovoltaic module for changing electric energy into, the photovoltaic module is connected in series or in parallel by solar battery；For storing the battery group of electric energy produced by the photovoltaic module, the photovoltaic module is connect with the battery group by photovoltaic controller, for being overcharged to the battery group, Cross prevention；Inverter is connect with battery group, is used for converting direct-current power into alternating-current power；It further include cooling cycle unit, the cooling cycle unit is connect with the photovoltaic module, for cooling down to photovoltaic module.The present invention cools down photovoltaic module using cooling water circulation, greatly improves the utilization rate of photovoltaic module, optimizes the electricity generation system of photovoltaic plant, improves generating efficiency.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, in particular to a kind of generated energy optimization system of photovoltaic plant.
Background technique
Photovoltaic plant, refer to it is a kind of using solar energy, using electronic components such as special material crystal silicon plate, inverters
The power generation system of composition, the photovoltaic generating system for being connected with power grid and transmitting electric power to power grid.Photovoltaic plant is to belong to state at present
Family encourages the maximum green electric power supply of dynamics to develop energy project.The advantages of photovoltaic power generation is less by territory restriction, because of sunlight
Illuminate the earth；Photovoltaic system also has safe and reliable, noiseless, low pollution, without consuming fuel and erecting power transmission lines
The advantage that power generation is powered on the spot and the construction period is short.Photovoltaic power generation product is mainly used for three broad aspects: first is that mentioning for the conjunction of no electric field
Power supply source；Second is that Sun Day electronic product, such as all kinds of solar chargers, the various lamps of solar street light and solar energy meadow
Tool etc.；Third is that generating electricity by way of merging two or more grid systems, this has been widely applied implementation in developed country.Existing photovoltaic plant is using photovoltaic
The photoelectric conversion of plate, by solar energy photovoltaic panel export direct current be converted into can direct grid-connected or connection load device, conversion
The efficiency of electric energy is lower, and the energy of light is only converted to AC energy output less than 10.47% at present.It can be seen that photovoltaic plant
Generated energy have it is to be hoisted, photovoltaic panel work in the higher situation of temperature, open-circuit voltage declines to a great extent with the raising of temperature, together
When lead to the serious offset of charging work point, easily make system undercharge and damage；The temperature of photovoltaic panel rises 1 DEG C, crystalline silicon
The peak power output decline 0.04% of solar cell, open-circuit voltage decline 0.04% (- 2mv/ DEG C), and short circuit current rises
0.04%, cause photovoltaic module that cannot give full play to maximum performance, therefore be badly in need of a kind of built photovoltaic power station power generation amount optimization system, it is right
Photovoltaic panel in work is cooled down to improve the generated energy of photovoltaic plant.
Summary of the invention
The purpose of the present invention is to provide a kind of generated energy optimization systems of photovoltaic plant, carry out to the photovoltaic panel in work
It is cooling, to improve the generated energy of photovoltaic plant.
The generated energy optimization system of photovoltaic plant of the present invention, including for absorbing sunlight, and by solar radiation
The photovoltaic module for changing electric energy into can be switched through, the photovoltaic module is connected in series or in parallel by solar battery, described for storing
The battery group of electric energy produced by photovoltaic module, the photovoltaic module are connect with the battery group by photovoltaic controller, are used
In the battery group is overcharged, Cross prevention, further include inverter, connect with battery group, for by direct current
It is converted into alternating current and cooling cycle unit, the cooling cycle unit is connect with the photovoltaic module, for photovoltaic group
Part cools down.
The photovoltaic module includes the photovoltaic panel for absorbing solar radiation, and the photovoltaic panel is arranged on the supporting plate, institute
It states support plate to connect by support rod and angle shaft with pedestal, further includes the generated energy for managing the photovoltaic plant concentratedly
The centralized processing device of optimization system, for clearing up the cleaning modul of the photovoltaic panel surface dirt and for measuring intensity of illumination
Measurement module.
Further, one end of the support rod is connected on worm gear by worm gear central axis, and is moved therewith, branch
The other end of strut is connected on sliding block by sliding block shaft, curve of output movement.
Further, the two sides of the support plate open up a slide block slot respectively, and the sliding block is under the drive of support rod, edge
Slide block slot does linear relative movement, and sliding block drives slide block slot, that is, support plate is driven to do curvilinear motion, adjusts corresponding control
Angle processed.
Further, the inside of the pedestal opens up a motor slot, installation first motor in the motor slot, and described first
The output shaft of motor keeps horizontal, and the first motor output shaft connecting worm, the worm and wheel intercouples, worm gear with
Support rod exports a spinning movement, the group of the worm gear and worm screw to worm screw by worm gear center axis connection, the first motor
It closes and converts linear motion for horizontal revolving motion, drive support rod movement.
Further, in order to making the photovoltaic panel receive solar radiation, the photovoltaic panel and pedestal to the maximum extent
Between angle be adjusted according to following formula (1),
Wherein, angle of the γ between the photovoltaic panel and pedestal, A indicate intensity of illumination, A0Indicate average annual intensity of illumination,
T indicates sunshine average time, and Td indicates daily equivalent sunshine-duration in sunshine worst season, γ0Indicate that initial angle, C indicate
Angle modification coefficient, wherein angle modification coefficient is 0.95.
Further, the centralized processing device adjusts the angle between the photovoltaic panel and pedestal according to above-mentioned formula (1)
γ, enables photovoltaic panel according to the variation in season and weather, and intelligent adjusting goes out most reasonable angle, maximumlly plays its function
Energy.
Further, the measurement module includes the illumination photometer for measuring intensity of illumination, data transfer to institute
It states in centralized processing device, to complete the operation of formula (1).
The cleaning modul includes the roller for winding traction rope, and rolling stand is respectively set at left and right sides of roller,
The rolling stand is fixed on the left and right ends on the support plate top, is used to support the roller, and the two sides of the roller are each
There is a roller bearing, one end of the roller bearing connect axis connection with one, and the other end is connect with retarder, and the retarder is located in roller
Portion, the retarder and the roller are integrally formed.
Further, the connecting shaft is connect with the second motor, second motor by drive connecting shaft rotation to
Retarder is driven, the rotation of roller is controlled.
Further, second motor is mounted on motor box, can effective protection motor do not done by external environment
It disturbs, prolongs the service life.
Further, the cleaning modul further includes the hairbrush for clearing up photovoltaic plate surface, and the hairbrush passes through described
Traction rope is connect with the roller, traction rope under the drive of roller can adjustment length, to be moved up and down with electric brush.
Further, the outside of the hairbrush is stainless steel metal block, provides certain pressure when hairbrush wipes photovoltaic panel
Power.
Further, the metal block is hollow structure, is equipped with the aperture that spacing is 1cm close to the one side of hairbrush, described
Aperture is interconnected, and opens up a through-hole above the metal block, and the through-hole can connect all apertures, the through-hole with
The connection of one mini air compressor, the mini air compressor is for generating the ash that compressed air removes the photovoltaic plate surface
Dirt.
Further, between the baffle and the photovoltaic panel there are gap, in order to by the dirt under being cleared up in photovoltaic panel
Soil leaks down.
Further, first pressure sensor is arranged in the surface of the baffle, and the surface setting second pressure of roller senses
Device, for incuding the change in location of hairbrush, the first pressure sensor and second pressure sensor detect that pressure information passes
The centralized processing device is transported to, centralized processing device controls roller rotation direction according to the pressure information of baffle and cylinder surface.Institute
Stating cooling unit includes the cooling water pipe for being laid on the photovoltaic module back side, water tank, cooling tower, water pump and water pump control
Molding block, the water tank are provided with cooling water and connect with the cooling water pipe, opened up at the top of the cooling tower water inlet with
The cooling water pipe is connected by a water pump, and bottom opens up water outlet and connect with water tank, for cooling down to the cooling water,
The water pump is also connect with a water pump control modules, for controlling the opening and closing of the cooling cycle unit.
Further, the cooling water pipe is bonded in the back side of the photovoltaic module in S by low-temperature welding or heat-conducting glue
Shape distribution, its spacing are less than 1cm, to guarantee that its thermal contact resistance minimizes and the photovoltaic module surface radiating is uniform.
Further, thermocouple element is arranged in the photovoltaic module, for measuring the temperature on the photovoltaic module surface, institute
The surface for stating photovoltaic module is also set up and solar radiation sensor, passes for measuring intensity of solar radiation, and by measurement data
It transports to the water pump control modules water pump control modules and calculates Temperature affection factor K according to formula (2):
Wherein, F indicates the photovoltaic module surface temperature mean value within the Δ t time, and i indicates the photovoltaic within the Δ t time
The electric current mean value of component, m indicate the intensity of solar radiation mean value within the Δ t time, and S indicates effective extinction face of photovoltaic module
Product, W indicate that the generated energy in the photovoltaic module that Δ t time inner area is S, θ take 15 °, and E is correction factor, value 0.95.
Further, when the Temperature affection factor K is greater than 0.5, the water pump control modules control the water pump fortune
Row, cooling cycle unit starting, cooling water absorb from the cooling water pipe that water tank enters the photovoltaic module back side and come from photovoltaic module
Heat, then enter cooling tower from the water inlet at the top of the cooling tower under the action of water pump, through supercooling the bottom of from
In the water outlet reflow tank in portion, cooling water recirculation system is formed, to cool down to photovoltaic module, so that the light
The generated energy of overhead utility is optimized；When the Temperature affection factor K is less than 0.5, the temperature of photovoltaic module restores normal water
Flat, it is out of service that the water pump control modules control the water pump.
Further, bypass diode, each piece of solar battery point in series connection group are set inside the photovoltaic module
It is not connect with a bypass diode, the anode of the bypass diode is connect with the cathode of the solar battery, the bypass
The anode of the cathode of diode and the solar battery is connect, for protecting the photovoltaic module at work not by individually too
The influence of positive energy battery failures.
Further, the bypass diode is rectifier diode, and specification selects reversed peak breakdown voltage and maximum
Operating current is all larger than maximum two pole of rectification for running operating voltage and twice of operating current or more of photovoltaic power station power generation system
Pipe.
Further, the battery group uses alkaline nickel-cadmium storage battery, compared with common lead-acid accumulator, alkaline nickel chromium triangle
Battery has relatively good deeper cavity ability, and is applicable in different environmental requirements, such as High aititude, high temperature, the differences such as low temperature
Under conditions of can normal use battery.
Further, described photovoltaic controller one end is connect with the photovoltaic module, and the other end and the battery group connect
It connects, for protecting battery not because overcharging, over-discharge or refluence due to damage.
Further, the inverter is connect with battery group, and the direct current for exporting battery group, which changes, to strike a bargain
Galvanic electricity.
Further, the inverter is gird-connected inverter, the electric energy feedback for exporting the battery to power grid.
Compared with prior art, the beneficial effects of the present invention are the generated energy optimizations of photovoltaic plant of the present invention
System is provided with cooling cycle unit, is cooled down using cooling water circulation to photovoltaic module, greatly improves photovoltaic group
The utilization rate of part optimizes the electricity generation system of photovoltaic plant, improves generating efficiency.
Further, cooling cycle cellular construction of the present invention is simple, easy for installation, consumes energy low, a cooling follows
Ring element can be flexible series-parallel with the progress of several photovoltaic modulies simultaneously, can adapt to the photovoltaic power generation system of various demands
System.
Each concatenated solar battery is provided with bypass diode inside photovoltaic module of the present invention, can be very
Good bypasses failure solar battery, when a solar battery breaks down, the bypass diode both ends shape that is attached thereto
At forward bias, the bypass diode is connected, operating current bypasses failure solar battery, it is flowed through through bypass diode,
The normal power generation for not influencing other solar batteries in series connection group, avoid influenced because of the failure of monolithic solar battery it is whole
The power generation of a system.
Further, the present invention uses MPPT photovoltaic controller, and one end connect with the photovoltaic module, the other end with it is described
The connection of battery group automatically shuts down and charges to battery when charging voltage is higher than protection voltage, hereafter when voltage falls to maintenance electricity
When pressure, battery enters floating charge state, and floating charge is closed after lower than voltage is restored, into state is filled, when battery voltage is low
When protecting voltage, output is automatically closed to protect battery not damaged in controller, and after battery charges again, and energy is certainly
It is dynamic to restore electricity, while being effectively prevented using Schottky diode when the photovoltaic module is not when generating electricity, battery group
Electric current reverse direction flow photovoltaic module reduces generated energy loss, optimizes the electricity generation system of photovoltaic plant.
Further, the battery that the present invention uses has relatively good for alkaline nickel-cadmium storage battery, alkaline nickel-cadmium storage battery
Deeper cavity ability, and be applicable in different environmental requirements, such as High aititude, high temperature, low temperature etc. under different conditions can be normal
The battery used
Further, built photovoltaic power station power generation amount optimization system of the present invention extremely refines, reliable and stable, installation maintenance
Simplicity, and the service life is long.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural block diagram of the generated energy optimization system of photovoltaic plant of the embodiment of the present invention；
Fig. 2 is the generated energy optimization system structural schematic diagram of photovoltaic plant of the embodiment of the present invention；
Fig. 3 is the generated energy optimization system cooling unit structural schematic diagram of photovoltaic plant of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings come describe invention preferred embodiment.It will be apparent to a skilled person that these
Embodiment is used only for explaining the technical principle of invention, not in the protection scope of limitation invention.
It should be noted that in the description of invention, the instructions such as term " on ", "lower", "left", "right", "inner", "outside"
The term of direction or positional relationship is direction based on the figure or positional relationship, this is intended merely to facilitate description, without
It is that indication or suggestion described device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as the limitation to invention.
In addition it is also necessary to explanation, in the description of invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in invention.Refering to Figure 1, its structure for the generated energy optimization system of photovoltaic plant of the embodiment of the present invention
Schematic diagram, the generated energy optimization system of photovoltaic plant provided in an embodiment of the present invention, including by solar battery serial or parallel connection
The photovoltaic module 1 of composition, for absorbing sunlight, and solar radiant energy is switched through and changes electric energy into, for storing the photovoltaic group
The battery group 2 of electric energy produced by part 1, the photovoltaic module 1 are connect by photovoltaic controller 3 with the battery group 2, are used for
The battery group 2 is overcharged, Cross prevention, inverter 4 is connect with battery group 2, is struck a bargain for converting direct current
Galvanic electricity and cooling cycle unit 5, the cooling cycle unit 5 are connect with the photovoltaic module 1, for photovoltaic module 1 into
Row cools.
It please refers to shown in Fig. 2, the photovoltaic module 1 includes the photovoltaic panel 12 for absorbing solar radiation, the photovoltaic panel
12 are arranged in support plate 120, and the support plate 120 is connect by support rod 11 and angle shaft 17 with pedestal 16, further include
Focus on device 14, the measurement mould for clearing up the cleaning modul 13 of the photovoltaic panel surface dirt and for measuring intensity of illumination
Block 15.
Specifically, one end of the support rod 11 is connected on worm gear 164 by worm gear central axis 165, and with one
Movement is played, the other end of support rod 11 is connected on sliding block 1202 by sliding block shaft 1203, curve of output movement.
Specifically, the two sides of the support plate 120 open up a slide block slot 1201 respectively, the sliding block 1202 is in support rod
Under 11 drive, linear relative movement is done along slide block slot 201, sliding block 1202 drives slide block slot 1201, that is, driving support plate
120 do curvilinear motion, adjust corresponding control angle, to guarantee that photovoltaic panel 2 can receive solar radiation to the maximum extent, mention
High generation efficiency.
Specifically, the inside of the pedestal 16 opens up a motor slot 161, first motor is installed in the motor slot 161
162, the output shaft of the first motor 162 keeps horizontal, the first motor output shaft connecting worm 163, the worm screw 163
It intercouples with worm gear 164, worm gear 164 and support rod 11 are connect by worm gear central axis 165, and the first motor 162 is to snail
Bar 163 exports a spinning movement, and the combination of the worm gear and worm screw converts linear motion for horizontal revolving motion, drives support
Bar 11 moves.
In order to make the photovoltaic panel receive solar radiation to the maximum extent, between the photovoltaic panel 12 and pedestal 16
Angle is adjusted according to following formula (1),
Wherein, angle of the γ between the photovoltaic panel 12 and pedestal 16, A indicate intensity of illumination, A0Indicate average annual illumination
Intensity, T indicate sunshine average time, and Td indicates daily equivalent sunshine-duration in sunshine worst season, γ0Indicate initial angle, C
Indicate angle modification coefficient, wherein angle modification coefficient is 0.95.
Specifically, the centralized processing device 4 is adjusted between the photovoltaic panel 12 and pedestal 16 according to above-mentioned formula (1)
Angle γ enables photovoltaic panel 12 according to the variation in season and weather, and intelligent adjusting goes out most reasonable angle, maximized to send out
Wave its function.
Specifically, the measurement module 15 includes the illumination photometer for measuring intensity of illumination, data transfer is extremely
In the centralized processing device 14, to complete the operation of formula (1).
The cleaning modul 13 includes the roller 130 for winding traction rope 136, and the left and right sides of roller 130 is set respectively
Rolling stand 1301 is set, the rolling stand 1301 is fixed on the left and right ends on 120 top of support plate, is used to support described
Respectively there are a roller bearing in roller 130, the two sides of the roller 130, and one end of the roller bearing is connect with a connecting shaft 131, the other end with
Retarder connection, the retarder are located at drums inside, and the retarder and the roller 130 are integrally formed.
Specifically, the connecting shaft 131 is connect with the second motor 132, second motor 132 is by driving connecting shaft
131 rotations control the rotation of roller to drive retarder.
Specifically, second motor 132 is mounted on motor box 133, can effective protection motor not by extraneous ring
The interference in border, prolongs the service life.
Specifically, the cleaning modul 13 further includes the hairbrush 134 for clearing up 12 surface of photovoltaic panel, the hairbrush 34
Connect by the traction rope 136 with the roller 130, traction rope 136 under the drive of roller 130 can adjustment length, from
And moved up and down with electric brush 134, the hairbrush material is soft, and being wiped repeatedly photovoltaic panel will not cause to damage to it, to reach
Clear up the purpose of photovoltaic panel surface dirt.
Specifically, the outside of the hairbrush 134 is stainless steel metal block, provided centainly when hairbrush wipes photovoltaic panel
Pressure, so that photovoltaic panel is cleared up more quickly clean.
Specifically, the metal block is hollow structure, several that spacing is 1cm are equipped with close to the one side of hairbrush 134
Aperture, the aperture are interconnected, and a through-hole 137 are opened up above the metal block, the through-hole 137 can connect all
Aperture, the through-hole are connect with a mini air compressor 138, and the mini air compressor 138 is for generating compressed air
Remove the dust on 12 surface of photovoltaic panel.
Specifically, there are gaps between the baffle and the photovoltaic panel 12, in order to it will clear up in photovoltaic panel under
Dust leaks down.
Specifically, first pressure sensor is arranged in the surface of the baffle, the surface setting second pressure of roller 130 is passed
Sensor, for incuding the change in location of hairbrush, the first pressure sensor and second pressure sensor detect pressure information
It is transmitted to the centralized processing device 14, centralized processing device 14 controls roller rotation side according to the pressure information of baffle and cylinder surface
To.
Specifically, bypass diode is set inside the photovoltaic panel 12, each piece of solar battery in series connection group point
It is not connect with a bypass diode, the anode of the bypass diode is connect with the cathode of the solar battery, the bypass
The anode of the cathode of diode and the solar battery is connect, for protecting the photovoltaic panel 12 at work not by individually too
The influence of positive energy battery failures, when a solar battery breaks down, the bypass diode both ends being attached thereto are formed just
To bias, the bypass diode is connected, operating current bypasses failure solar battery, flows through through bypass diode, not shadow
Ring the normal power generation of other solar batteries in series connection group.
Specifically, the bypass diode is rectifier diode, specification selects reversed peak breakdown voltage and maximum
Operating current is all larger than maximum two pole of rectification for running operating voltage and twice of operating current or more of photovoltaic power station power generation system
Pipe.
Specifically, the battery group 2 uses alkaline nickel-cadmium storage battery, compared with common lead-acid accumulator, alkaline nickel
Chromium battery has relatively good deeper cavity ability, and is applicable in different environmental requirements, such as High aititude, and high temperature, low temperature etc. is no
With under conditions of can normal use battery.
Specifically, the photovoltaic controller 3 is connect with battery group 2, the control of MPPT photovoltaic is used in the embodiment of the present invention
Device processed, one end are connect with the photovoltaic module 1, and the other end is connect with the battery group 2, and charging voltage is higher than protection voltage
When, it automatically shuts down and charges to battery, hereafter when voltage falls to maintenance voltage, battery enters floating charge state, when lower than extensive
Floating charge is closed after complex voltage, into filling state, when battery voltage is lower than protection voltage, controller be automatically closed output with
Protect battery not damaged, after battery charges again, and energy automatic recovery of power supply, while being had using Schottky diode
Effect is avoided when the photovoltaic module 1 is not when generating electricity, and the electric current reverse direction flow photovoltaic module 1 of battery group 2 reduces generated energy damage
It loses.
Specifically, the inverter 4 is connect with battery group 2, the direct current for exporting battery group 2 is transformed into
Alternating current, the inverter 4 are gird-connected inverter, and the electric energy feedback for exporting the battery is to power grid, if power grid is disconnected
When electric, the route for supplying electricity to power grid need to be quickly cut off, to ensure when power is off, gird-connected inverter can also be closed, and avoid injuring
Repair the personnel of power grid.
In addition, the efficiency of photovoltaic power generation can reduce as the temperature rises, in order to optimize the generated energy of photovoltaic plant, just
Need to carry out photovoltaic module cooling processing, the unit 5 that cools is arranged in the present invention, to reach to the cold of the photovoltaic module 1
But cool down.
It please refers to shown in Fig. 3, the cooling unit 5 includes cooling water pipe 51, the water for being laid on 1 back side of photovoltaic module
Case 52, cooling tower 53, water pump 54 and water pump control modules 55, the water tank 52 are provided with cooling water and the cooling water
Pipe 51 connects, and the top of the cooling tower 53 opens up water inlet and connect with the cooling water pipe 51 by a water pump 54, bottom
Water outlet is opened up to connect with water tank 52, for cooling down to the cooling water, the water pump 54 also with a water pump control modules
55 connections, for controlling the opening and closing of the cooling cycle unit.
Specifically, the cooling water pipe 51 is bonded in the back side of the photovoltaic module 1 by low-temperature welding or heat-conducting glue
S-shaped distribution, its spacing are less than 1cm, to guarantee that its thermal contact resistance minimizes and the photovoltaic module surface radiating is uniform.
Specifically, several thermocouple elements are arranged in the photovoltaic module 1, for measuring 1 surface of photovoltaic module
The surface of temperature, the photovoltaic module is also set up and solar radiation sensor, for measuring intensity of solar radiation,
And by data transfer to the water pump control modules 55, water pump control modules 55 calculate temperature according to formula (2)
Degree influences COEFFICIENT K:
Wherein, F indicates the 1 surface temperature mean value of photovoltaic module within the Δ t time, and i indicates the photovoltaic within the Δ t time
The electric current mean value of component 1, m indicate the intensity of solar radiation mean value within the Δ t time, and S indicates effective extinction face of photovoltaic module 1
Product, W indicate that the generated energy in the photovoltaic module that Δ t time inner area is S, θ take 15 °, and E is correction factor, value 0.95.
When the Temperature affection factor K is greater than 0.5, the water pump control modules 55 control the water pump 54 and run, cold
But cycling element 5 starts, and cooling water absorbs from the cooling water pipe 51 that water tank 52 enters 1 back side of photovoltaic module and comes from photovoltaic group
Then the heat of part 1 enters cooling tower from the water inlet at 53 top of cooling tower under the action of water pump 54, through being subcooled
But from the water outlet reflow tank 52 of bottom, form cooling water recirculation system makes to cool down to photovoltaic module
The generated energy for obtaining the photovoltaic plant is optimized；When the Temperature affection factor K is less than 0.5, the temperature of photovoltaic module 1 is extensive
Multiple normal level, it is out of service that the water pump control modules 55 control the water pump 54.It will be appreciated by those skilled in the art that
It is the arrangement of above-mentioned each structure, is adjusted according to practical service environment and space size, need to only meet can be realized continuous productive process simultaneously
Space can be reduced as far as possible.
The present invention efficiently solves the excessively high influence and photovoltaic module to photovoltaic power station power generation efficiency of photovoltaic module temperature
The problem of temperature unevenness greatly improves the utilization efficiency of photovoltaic module, optimizes electricity generation system, and structure is simple, easy for installation,
Low power consuming, a cooling unit can be flexible series-parallel with the progress of several photovoltaic modulies simultaneously, can adapt to various demands
Photovoltaic generating system.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of generated energy optimization system of photovoltaic plant characterized by comprising
For absorbing sunlight, and solar radiant energy is directly changed into the photovoltaic module of electric energy, if the photovoltaic module includes
Solar battery made of dry serial or parallel connection；
For storing the battery group of electric energy produced by the photovoltaic module, the photovoltaic module and the battery group pass through light
Controller connection is lied prostrate, for being overcharged to the battery group, Cross prevention；
Further include inverter, connect with battery group, is used for converting direct-current power into alternating-current power；
It further include cooling cycle unit, the cooling cycle unit is connect with the photovoltaic module, for carrying out to photovoltaic module
It cools；
The photovoltaic module includes the photovoltaic panel for absorbing solar radiation, and the photovoltaic panel is arranged on the supporting plate, the branch
Fagging is connect by support rod and angle shaft with pedestal, further includes optimizing for managing the generated energy of the photovoltaic plant concentratedly
The centralized processing device of system, the measurement for clearing up the cleaning modul of the photovoltaic panel surface dirt and for measuring intensity of illumination
Module；
One end of the support rod is connected on worm gear by worm gear central axis, and is moved therewith, the other end of support rod
It is connected on sliding block by sliding block shaft, curve of output movement；
The two sides of the support plate open up a slide block slot respectively, and the sliding block is done relatively under the drive of support rod along slide block slot
Linear motion, sliding block drive slide block slot, that is, support plate is driven to do curvilinear motion, adjust corresponding control angle；
The inside of the pedestal opens up a motor slot, installs first motor, the output shaft of the first motor in the motor slot
Keep horizontal, the first motor output shaft connecting worm, the worm and wheel intercouples, and worm gear and support rod pass through snail
Wheel center axis connection, the first motor export a spinning movement to worm screw, and the combination of the worm gear and worm screw will rotate horizontally
Conversion of motion is linear motion, drives support rod movement；
Angle between the photovoltaic panel and pedestal is adjusted according to following formula (1),
Wherein, angle of the γ between the photovoltaic panel and pedestal, A indicate intensity of illumination, A0Indicate average annual intensity of illumination, T is indicated
Sunshine average time, Td indicate daily equivalent sunshine-duration in sunshine worst season, γ0Indicate that initial angle, C indicate that angle is repaired
Positive coefficient, wherein angle modification coefficient is 0.95；
The centralized processing device adjusts the angle γ between the photovoltaic panel and pedestal according to above-mentioned formula (1), enables photovoltaic panel
Enough variations according to season and weather, intelligent adjusting go out most reasonable angle；
The measurement module includes the illumination photometer for measuring intensity of illumination, data transfer to the centralized processing device
In, to complete the operation of formula (1)；
The cleaning modul includes the roller for winding traction rope, and rolling stand is respectively set at left and right sides of roller, described
Rolling stand is fixed on the left and right ends on the support plate top, is used to support the roller, and the two sides of the roller respectively have one
Roller bearing, one end of the roller bearing connect axis connection with one, and the other end is connect with retarder, and the retarder is located at drums inside,
The retarder and the roller are integrally formed；
The connecting shaft is connect with the second motor, and second motor is controlled by driving connecting shaft rotation to drive retarder
The rotation of roller processed；
Second motor is mounted on motor box；
The cleaning modul further includes the hairbrush for clearing up photovoltaic plate surface, and the hairbrush passes through the traction rope and the rolling
Cylinder connection, traction rope under the drive of roller can adjustment length, to be moved up and down with electric brush；
The outside of the hairbrush is stainless steel metal block, provides certain pressure when hairbrush wipes photovoltaic panel；
The metal block is hollow structure, is equipped with the aperture that spacing is 1cm close to the one side of hairbrush, and the aperture is interconnected,
A through-hole is opened up above the metal block, the through-hole can connect all apertures, the through-hole and a small size air air pressure
The connection of contracting machine, the mini air compressor is for generating the dust that compressed air removes the photovoltaic plate surface；
There are gaps between the baffle and the photovoltaic panel；
First pressure sensor is arranged in the surface of the baffle, and second pressure sensor is arranged in the surface of roller, for incuding hair
The change in location of brush, the first pressure sensor and second pressure sensor detect that pressure information is transmitted at the concentration
Device is managed, centralized processing device controls roller rotation direction according to the pressure information of baffle and cylinder surface；
The cooling unit include the cooling water pipe for being laid on the photovoltaic module back side, water tank, cooling tower, water pump and
Water pump control modules, the water tank are provided with cooling water and connect with the cooling water pipe, open up at the top of the cooling tower
Water inlet is simultaneously connect with the cooling water pipe by a water pump, and bottom opens up water outlet and connect with water tank, the cooling unit
For cooling down to the cooling water；
The water pump is also connect with a water pump control modules, for controlling the opening and closing of the cooling cycle unit；
Thermocouple element is arranged in the photovoltaic module, for measuring the surface temperature of the photovoltaic module；
The surface of the photovoltaic module also sets up solar radiation sensor, for measuring intensity of solar radiation, and by measurement data
The water pump control modules are transmitted to, water pump control modules calculate Temperature affection factor K according to formula (2):
Wherein, F indicates the photovoltaic module surface temperature mean value within the Δ t time, and i indicates the photovoltaic module within the Δ t time
Electric current mean value, m indicates intensity of solar radiation mean value within the Δ t time, and S indicates effective extinction area of photovoltaic module, W table
Show that the generated energy in the photovoltaic module that Δ t time inner area is S, θ take 15 °, E is correction factor, value 0.95；
When the Temperature affection factor K is greater than 0.5, the water pump control modules control the water pump operation, cooling cycle list
Member starting, cooling water absorb the heat from photovoltaic module, then exist from the cooling water pipe that water tank enters the photovoltaic module back side
Enter cooling tower from the water inlet at the top of the cooling tower under the action of water pump, is flowed back to through supercooling from the water outlet of bottom
In water tank, cooling water recirculation system is formed, to cool down to photovoltaic module, so that the generated energy of the photovoltaic plant
Optimized；When the Temperature affection factor K is less than 0.5, the temperature of photovoltaic module restores normal level, the water pump control
It is out of service that module controls the water pump.
2. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that the cooling water pipe passes through
Low-temperature welding or heat-conducting glue are bonded in the S-shaped distribution in the back side of the photovoltaic module, and its spacing is less than 1cm.
3. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that inside the photovoltaic module
Bypass diode is set, and each piece of solar battery in series connection group is connect with a bypass diode respectively, two poles of the bypass
The anode of pipe is connect with the cathode of the solar battery, the anode of the cathode of the bypass diode and the solar battery
Connection, is not influenced for protecting the photovoltaic module at work by single solar battery failure.
4. the generated energy optimization system of photovoltaic plant according to claim 3, which is characterized in that the bypass diode is
Rectifier diode.
5. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that the battery group uses
Alkaline nickel-cadmium storage battery.
6. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that the photovoltaic controller one
End connect with the photovoltaic module, the other end is connect with the battery group, for protecting battery not because overcharging, over-discharge or
It flows and damages.
7. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that the inverter and electric power storage
The connection of pond group, the direct current for exporting battery group are transformed into alternating current.
8. the generated energy optimization system of photovoltaic plant according to claim 1, which is characterized in that the inverter is grid-connected
Inverter, the electric energy for exporting the battery are fed back to power grid.
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| CN117118090A (en) * | 2023-10-25 | 2023-11-24 | 电力规划总院有限公司 | Separate bin type energy storage system |
| CN117498792A (en) * | 2023-11-17 | 2024-02-02 | 南京力禧特光电科技有限公司 | Maximum power test system for photovoltaic cell |
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| CN113472013A (en) * | 2021-07-12 | 2021-10-01 | 零点创新科技有限公司 | Micro-grid new energy hybrid energy storage system |
| CN114123967A (en) * | 2021-12-06 | 2022-03-01 | 申茂江 | Solar photovoltaic power generation device capable of automatically cleaning through cooling of circulating water |
| CN117118090A (en) * | 2023-10-25 | 2023-11-24 | 电力规划总院有限公司 | Separate bin type energy storage system |
| CN117118090B (en) * | 2023-10-25 | 2024-01-23 | 电力规划总院有限公司 | Separate bin type energy storage system |
| CN117498792A (en) * | 2023-11-17 | 2024-02-02 | 南京力禧特光电科技有限公司 | Maximum power test system for photovoltaic cell |
| CN117498792B (en) * | 2023-11-17 | 2024-05-14 | 南京力禧特光电科技有限公司 | Maximum power test system for photovoltaic cell |
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| CN117955424A (en) * | 2024-03-27 | 2024-04-30 | 厦门中构新材料科技股份有限公司 | Photovoltaic power control device and control method thereof |
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