CN117439529A - Method and device for cleaning dust at bottom of photovoltaic module of fishing light complementary power station - Google Patents
Method and device for cleaning dust at bottom of photovoltaic module of fishing light complementary power station Download PDFInfo
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- CN117439529A CN117439529A CN202311390618.9A CN202311390618A CN117439529A CN 117439529 A CN117439529 A CN 117439529A CN 202311390618 A CN202311390618 A CN 202311390618A CN 117439529 A CN117439529 A CN 117439529A
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- cleaning
- photovoltaic module
- rainfall
- dust
- water
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- 238000004140 cleaning Methods 0.000 title claims abstract description 83
- 239000000428 dust Substances 0.000 title claims abstract description 42
- 230000000295 complement effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000001556 precipitation Methods 0.000 claims abstract description 28
- 238000011010 flushing procedure Methods 0.000 claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 2
- 238000005507 spraying Methods 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 6
- 238000011217 control strategy Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater 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
- H02S40/10—Cleaning arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
- B08B11/04—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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 relates to a dust cleaning method and device for a photovoltaic module of a fishing light complementary power station, wherein a waterway part of the device is used for pumping water in a pond through a water inlet pipe by a water pump and flushing the lower edge of the photovoltaic module of a water outlet pipe; the circuit part comprises a power supply, a load, a control module and a circuit part, and the photovoltaic panel part is used for generating power to be used as the power supply of the circuit part to supply the water pump of the load part to work; the control module is used for controlling the dust cleaning device to work in a specific time: evaluating and judging according to the precipitation amount and the precipitation upper limit and the precipitation lower limit of the current day; and when the rainfall on the same day is judged to be light rain, cleaning the lower edge of the photovoltaic module. Compared with the prior art, the invention performs fine and efficient cleaning on the photovoltaic panel according to the characteristic of dust accumulation at key positions of the photovoltaic module, does not need large-scale spraying, greatly reduces water consumption, improves cleaning efficiency, and reduces the ecological influence of the operation of the flushing device on the pond; the cleaning method is simple in structure, does not need external energy supply, and effectively reduces the cleaning cost.
Description
Technical Field
The invention relates to the technical field of maintenance of photovoltaic equipment, in particular to a method and a device for cleaning dust at the bottom of a photovoltaic module of a fishing light complementary power station.
Background
In recent years, with the continuous development of new energy power generation industry, the construction of photovoltaic power stations presents an ascending situation. Improving the power generation efficiency of a photovoltaic power station becomes a research focus of the industry. Because the accumulated dust can shield the illumination area, the transmissivity of solar rays is reduced, the radiant energy absorbed by a photovoltaic cell is further reduced, and the power generation performance of the photovoltaic module is severely restricted, the cleaning of the accumulated dust of the photovoltaic module becomes a key for improving the power generation efficiency of a photovoltaic station.
At present, the main cleaning modes of the photovoltaic module comprise natural cleaning, manual cleaning, automatic cleaning and self-cleaning. However, for the fishing light complementary power station, because the fishing light complementary power station is influenced by the field environment, the photovoltaic module is built in the pond, the manual cleaning difficulty is high, the cleaning cost is high, the water consumption is high, the automatic cleaning power taking difficulty range is wide, the cost is high, and chemical wastewater generated by self cleaning is easy to pollute organisms in the pond, so most of the stations mainly depend on a natural cleaning mode.
The Chinese patent application CN202111306817. X discloses a decision method for cleaning a photovoltaic module, which calculates the current estimated daily dust loss degree including rainfall influence and the estimated cleaning yield, and judges whether cleaning is performed or not by comparing the two.
Chinese patent application CN202210402962.4 determines whether the photovoltaic module is currently to be cleaned based on the degree of loss of power generation, rainfall and the cumulative days without cleaning, and determines the current day cleaning time based on the current day wind speed and the current day temperature.
However, in the prior art, the natural rainfall is only utilized to save the cleaning cost, the great influence of the rainfall intensity on the cleaning effect is not considered, the heavy rainfall can effectively clean the deposited ash on the surface of the photovoltaic module, but the small rainfall can only remove a small amount of deposited ash, and part of deposited ash can be accumulated on the lower edge of the module, so that the cleaning effect is poor in rainy days in practice.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method and a device for cleaning dust at the bottom of a photovoltaic module of a fishing light complementary power station.
The aim of the invention can be achieved by the following technical scheme:
as a first aspect of the present invention, there is provided a method for cleaning dust in a photovoltaic module of a fishing light complementary power station, wherein the method determines whether to clean a lower edge of the photovoltaic module according to daily precipitation and precipitation upper and lower limits evaluation:
when the daily rainfall is larger than the upper limit of the rainfall, judging that the daily rainfall is heavy rainfall, and not cleaning dust;
when the daily rainfall is larger than the lower limit of the rainfall and smaller than the upper limit of the rainfall, judging that the rainfall is medium rain at the moment, and detecting and judging the rainfall duration; when the rainfall duration is greater than or equal to a set rainfall duration threshold, not carrying out dust cleaning work; when the rainfall duration is smaller than a set rainfall duration threshold, carrying out dust cleaning work;
and when the daily rainfall is more than 0 and less than the lower limit of the rainfall, judging that the daily rainfall is light rain, and cleaning dust.
Further, when the daily precipitation amount is equal to 0, judging that precipitation does not exist in the same day, and detecting and judging the continuous days without precipitation; and when the continuous days without precipitation are greater than the set day threshold, cleaning the photovoltaic module.
Further, the time for the washing is set at night.
Furthermore, the cleaning mode adopts short-time intermittent flushing.
Further, the precipitation upper limit and the precipitation lower limit are determined according to rainfall data in the local historical weather forecast.
As a second aspect of the present invention, there is provided a dust cleaning apparatus for a photovoltaic module of a fishing light complementary power station, the dust cleaning apparatus comprising a waterway portion and a circuit portion:
the waterway part comprises a water pump and a water pipe, wherein the input end of the water pump is connected with a water inlet pipe to pump water in the pond, the input end of the water pump is flushed through the bottom of the photovoltaic assembly of the water outlet pipe, and the tail end of the water outlet pipe is horizontally aligned with the lower edge of the photovoltaic assembly;
the circuit part comprises a power supply, a load, a control module and a circuit part, wherein the power supply is generated by the photovoltaic panel part and is used for supplying the miniature water pump of the load part to work, and the control module is used for controlling the dust cleaning device to implement the dust cleaning method of the photovoltaic module of the fishing light complementary power station.
Further, the components and the circuits of the circuit part are wrapped by insulating, dampproof and corrosion-resistant material pipes.
Furthermore, the water pump in the waterway part is a high-pressure water pump, and the water pipe is a hard pipeline for corrosion resistance and salt mist prevention.
Further, a water inlet of the water pipe is provided with a filter for filtering impurities in the water.
Further, the cleaning device further comprises a spraying device arranged above the photovoltaic module and/or a spraying device arranged at a fixed position of the photovoltaic station.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, the circuit and the waterway part coordinate to obtain the rainfall of the photovoltaic field station through the control module, the rainfall is compared with the preset value, when the rainfall is lower than the preset value, an instruction is sent to the circuit part, the circuit part starts to supply power, the waterway part is driven to pump water for short-time pumping work, meanwhile, the photovoltaic lower edge area of a photovoltaic gray key area is considered, the water outlet pipe is horizontally aligned to the photovoltaic lower edge to flush a photovoltaic module, the flushing time is set to be short-time intermittent flushing, the efficient and accurate flushing is realized, large-scale spraying is not needed, the water consumption is greatly reduced, the cleaning efficiency is improved, and the influence of the flushing device on the ecology of the pond is reduced as much as possible.
Drawings
FIG. 1 is a schematic flow chart of a method for cleaning dust at the bottom of a photovoltaic module of a fishing light complementary power station;
FIG. 2 is a schematic structural view of a dust cleaning device at the bottom of a photovoltaic module of a fishing light complementary power station;
FIG. 3 is a schematic diagram of the operation mode of the dust cleaning device at the bottom of the photovoltaic module of the fishing light complementary power station;
the reference numerals in the figures indicate: 1. the photovoltaic panel, 11, the fixed bolster, 2, control module, 21, power cord, 3, water pump, 4, water pipe, 41, delivery port, 42, water inlet, 43, filter.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Example 1
The invention improves the scheme for cleaning the dust at the bottom of the photovoltaic module of the fishing light complementary power station, and aims at the fishing light complementary photovoltaic power station with water area resources, the photovoltaic module is cleaned by filtering the existing water resources, and the resource utilization rate is improved without external water diversion; according to the influence of meteorological factors on the distribution of the accumulated ash, the accumulated ash is repeatedly washed in a small rainy weather which is easy to form the accumulated ash on the surface of the photovoltaic module through judging the rainfall of the meteorological factors, so that the cleaning efficiency is high and the water consumption is small.
As shown in fig. 2, the photovoltaic cleaning device designed by the invention comprises a circuit part and a water path part, wherein a miniature water pump 3 is used as connecting equipment of the circuit part and the water path part; the circuit part comprises a power supply part, a load part, a control part and a circuit part, the photovoltaic panel 1 part is used for generating power to serve as the power supply of the circuit part, the load part miniature water pump 3 is supplied to work, an operation strategy is formulated by tracking environment parameters, and the control module 2 is remotely controlled, so that the water pump 3 can pump water in a specific time. The waterway part comprises a water pipe 1, a miniature water pump 3 and a filter 43, wherein under the running state of the miniature water pump 3, water in the pond is pumped through the filter 43 by a water inlet pipe 41, and the bottom of the photovoltaic module is flushed by a water outlet pipe 41. Compared with the existing photovoltaic module cleaning technical scheme, the method is simple in structure, does not need external energy, effectively reduces cleaning cost, and effectively improves photovoltaic power generation capacity through fine cleaning by utilizing the existing water area resources and the spontaneous and self-use of the photovoltaic part as a power supply according to the gray deposition characteristics of key parts of the photovoltaic module.
Wherein, the waterway part is connected by a pipeline and is fixed on the photovoltaic bracket 11 by a fixed bracket, and the water inlet 42 is provided with a filter 41 for filtering impurities in the water area; the water inlet pipeline is connected to the water inlet 42 of the miniature water pump, the water outlet pipeline is connected to the water outlet 41 of the water pump, the water outlet 41 is aligned to the lower edge of the photovoltaic module, the water pump 2 pumps water after being started and the water outlet 41 washes the lower edge of the photovoltaic panel 1 horizontally; the water pump 3 in the waterway is a high-pressure water pump, and the water pipe 4 is a hard pipeline for corrosion prevention and salt mist prevention.
The electric energy which is taken by the circuit part is provided by a branch of the photovoltaic module, and the energy utilization ends are all connected in a direct current mode; the circuit part devices and the circuits are wrapped by insulating, dampproof and corrosion-resistant material pipes.
As shown in fig. 1, a control strategy in the circuit part control module is turned on and off according to the determination of the precipitation control circuit, and the specific strategy is as follows:
the establishment of the control strategy is evaluated and judged according to the precipitation pt, the precipitation upper limit pm and the precipitation lower limit ps on the same day, wherein the boundary values pm and ps are determined according to the precipitation data in the local historical weather forecast.
When pt is larger than pm, determining that the rainfall on the same day is heavy rainfall, and controlling not to carry out cleaning work;
when ps<pt<In pm, judging that the rainfall is medium rain at the moment, and detecting and judging the rainfall duration: when rainfall lasts for a few hours t h >t hmax Control not to carry out the cleaning work; when t h <t hmax Control of the power supplyCleaning the product;
when 0< pt < ps, judging that the daily rainfall is light rain, and controlling to carry out cleaning work;
the water outlet pipe is horizontally aligned with the lower edge of the photovoltaic module for flushing, flushing time is set to be short-time intermittent flushing, and the flushing time is set at night in a rainy day.
When pt=0, the detection and discrimination are carried out on the continuous days without precipitation in consideration of the fact that no precipitation exists in the same day, and when t > tmax is carried out on the continuous days without precipitation, the control switch is closed, and the water pump works.
The cleaning mode is not limited to the cleaning of the bottom of the photovoltaic module, and the cleaning strategy in the invention can be used for cleaning at regular time by arranging a spraying device above the photovoltaic module and/or arranging the spraying device at a fixed position of the photovoltaic station.
The scheme for cleaning the dust at the bottom of the photovoltaic module of the fishing light complementary power station is suitable in ground, simple in structure, low in investment cost and efficient in cleaning, and the utilization rate of the photovoltaic module is improved; the circuit part utilizes the generated energy of the photovoltaic self part to supply energy, does not need external independent power supply, only needs small-range circuit arrangement, and has low installation difficulty and high feasibility; the existing water resources are utilized by the waterway part to clean the photovoltaic module through filtration, the resource utilization rate is improved without external diversion, a water pump on-off strategy is formulated according to rainfall intensity judgment, the dust deposit existence condition is accurately positioned, intelligent cleaning is realized, and cleaning is more efficient.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The method is characterized in that whether the lower edge of the photovoltaic module is cleaned or not is judged according to the evaluation of the precipitation amount, the precipitation upper limit and the precipitation lower limit of the current day:
when the daily rainfall is larger than the upper limit of the rainfall, judging that the daily rainfall is heavy rainfall, and not cleaning dust;
when the daily rainfall is larger than the lower limit of the rainfall and smaller than the upper limit of the rainfall, judging that the rainfall is medium rain at the moment, and detecting and judging the rainfall duration; when the rainfall duration is greater than or equal to a set rainfall duration threshold, not carrying out dust cleaning work; when the rainfall duration is smaller than a set rainfall duration threshold, carrying out dust cleaning work;
and when the daily rainfall is more than 0 and less than the lower limit of the rainfall, judging that the daily rainfall is light rain, and cleaning dust.
2. The method for cleaning dust on a photovoltaic module of a fishing light complementary power station according to claim 1, wherein when the precipitation amount on the same day is equal to 0, it is determined that precipitation is not present on the same day, and detection and discrimination are performed on continuous days without precipitation; and when the continuous days without precipitation are greater than the set day threshold, cleaning the photovoltaic module.
3. The method for cleaning dust of a photovoltaic module of a fishing light complementary power station according to claim 1 or 2, wherein the time for cleaning dust is set at night.
4. The method for cleaning dust of a photovoltaic module of a fishing light complementary power station according to claim 3, wherein the cleaning mode adopts short-time intermittent flushing.
5. The method for cleaning dust on a photovoltaic module of a fishing light complementary power station according to claim 1, wherein the upper limit of precipitation and the lower limit of precipitation are determined according to rainfall data in a local historical weather forecast.
6. The utility model provides a complementary power station photovoltaic module dust belt cleaning device of fishing light, its characterized in that, dust belt cleaning device includes water route part and circuit part:
the waterway part comprises a water pump (3) and a water pipe (4), wherein the input end of the water pump (3) is connected with the water pump through a water inlet pipe (42) to pump water in the pond, the input end of the water pump (3) is flushed through the bottom of the photovoltaic module of the water outlet pipe (41), and the tail end of the water outlet pipe (41) is horizontally aligned with the lower edge of the photovoltaic module;
the circuit part comprises a power supply, a load, a control module (2) and a circuit part, wherein the power supply is generated by the photovoltaic panel (1) part and is used for supplying the load part micro water pump (3) to work, and the control module (2) is used for controlling the dust cleaning device to implement the dust cleaning method of the photovoltaic assembly of the fishing light complementary power station according to any one of claims 1-5.
7. The dust cleaning apparatus for a photovoltaic module of a fishing light complementary power station according to claim 6, wherein the components and the lines of the circuit part are covered by an insulating, moisture-proof and corrosion-resistant material tube.
8. The dust cleaning device for the photovoltaic module of the fishing light complementary power station according to claim 6, wherein the water pump (3) in the waterway part is a high-pressure water pump, and the water pipe (4) is a hard pipeline for corrosion resistance and salt mist resistance.
9. The dust cleaning apparatus for a fishing light complementary power station photovoltaic module according to claim 6, wherein the water inlet (42) of the water pipe (4) is provided with a filter (42) for filtering impurities in water.
10. The dust cleaning apparatus for a photovoltaic module of a fishing light complementation power station according to claim 6, wherein the cleaning apparatus further comprises a spray device arranged above the photovoltaic module and/or a spray device arranged at a fixed position of the photovoltaic station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311390618.9A CN117439529A (en) | 2023-10-25 | 2023-10-25 | Method and device for cleaning dust at bottom of photovoltaic module of fishing light complementary power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311390618.9A CN117439529A (en) | 2023-10-25 | 2023-10-25 | Method and device for cleaning dust at bottom of photovoltaic module of fishing light complementary power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117439529A true CN117439529A (en) | 2024-01-23 |
Family
ID=89552831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311390618.9A Pending CN117439529A (en) | 2023-10-25 | 2023-10-25 | Method and device for cleaning dust at bottom of photovoltaic module of fishing light complementary power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117439529A (en) |
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2023
- 2023-10-25 CN CN202311390618.9A patent/CN117439529A/en active Pending
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