CN102409720A - Water-saving cleaning system for large-scale photovoltaic array and control method thereof - Google Patents
Water-saving cleaning system for large-scale photovoltaic array and control method thereof Download PDFInfo
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- CN102409720A CN102409720A CN2011103540440A CN201110354044A CN102409720A CN 102409720 A CN102409720 A CN 102409720A CN 2011103540440 A CN2011103540440 A CN 2011103540440A CN 201110354044 A CN201110354044 A CN 201110354044A CN 102409720 A CN102409720 A CN 102409720A
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Abstract
The invention relates to a water-saving cleaning system for a large-scale photovoltaic array and a control method thereof. The water-saving cleaning system for the large-scale photovoltaic array comprises a rainwater recycling device and an automated micro-water cleaning device, wherein the rainwater recycling device comprises a rainwater funnel, a trench, a collecting pipeline, a split-flow device, an impounding reservoir, a purifying device and a clean water basin and the automated micro-water cleaning device comprises a water pump, a pressure sensor, a flow sensor, a PLC (Programmable Logic Controller) control cabinet, a magnetic valve, a computer, an upper computer interface configuration environment and a nozzle. The water-saving cleaning system has the advantages of high reliability, complete function, strong anti-interference capability, convenience for installation, low cost, no damage to the surface of a solar cell panel and no environmental pollution; the dedusting and the cleaning of a large-scale solar cell panel can be realized; particularly, a concept of recycling rainwater is adopted to ensure that the water and the energy saving are realized; and the automated micro-water cleaning device is adopted and manual operation is not needed to ensure that the manpower is greatly save and the high-quality recycling effect and long-term stable work can be guaranteed, therefore, very high environmental benefit and economic benefit are provided.
Description
Technical field
The present invention relates to a kind of technology that dedusting is carried out on the solar panel array surface, particularly a kind of large-scale photovoltaic array water saving cleaning systems and control method.
Background technology
Solar panel is the core component in the whole solar photovoltaic generation system.Solar panel array is installed in the open air usually, receives sunshine and produces electric energy.In use because dust is coverd with on the solar panel array surface easily; Can reduce its photoelectric transformation efficiency; Therefore need regularly dedusting to be carried out on the solar panel array surface; Present stage, the cleaning mode of land large-sized photovoltaic array mainly was that artificial the scouring is main, and operating efficiency is on the low side.
Chinese patent CN 201020685491.5 discloses a kind of system that utilizes High-Pressure Water to the automatic dedusting of solar panel array, although can realize dedusting on a large scale, has cooling in summer and deicing in winter function again.But should technology only be applicable to and enrich the water source and can not be applicable to the water scarcity place.
In China, that large-scale solar photovoltaic power plant often is distributed in is meagrely-populated, dust storm, the multiple area of frost ice and snow, and water scarcity.For example, large-scale solar photovoltaic power plant project location, the Zhangbei County annual mean sunshine duration of China 2897.8 hours, 2448 ℃ of annual active accumulated temperatures, annual mean strong wind number of days about 30 days more than 7 grades.Annual frost-free period 90-110 days, illumination was sufficient, and in rain same season of heat, day and night temperature is big, arid, windy, short of rain, frost-free period weak point be main climate characteristic.Mean sea level 1400-1600 rice belongs to continental monsoon climate in the county, 2.60 ℃ of average annual temperature, and nearly 400 millimeters of amount of precipitation can be carried out rainwater and reclaimed.
At present water is recycled and has not been had obstacle technically, introduces the industry control technology, and to China's actual conditions, the unmanned cleaning technique of developing the large-sized photovoltaic array system that little water washes is necessary.
Summary of the invention
The purpose of this invention is to provide a kind of large-scale photovoltaic array water saving cleaning systems and control method, comprising rainwater retracting device and the little water washing device of automation.Utilize water reclamation technology, make the cleaning of carrying out solar panel in the water scarcity area become a reality, have no lack of the area at the water source and clean, practiced thrift water resource again greatly.Adopt the little water of automation to clean, need not manually-operated, saved manpower greatly.Advantages such as this system has the reliability height, and is multiple functional, and interference resistance is strong, and is easy to use.This system can guarantee high-quality recovering effect and work steady in a long-term, and very high environmental benefit and economic benefit are arranged.
Described rainwater retracting device comprises rainwater funnel, trench, conduit, flow abandoning apparatus, reservoir, purifier and clear water reserviors.The rainwater funnel is installed in the solar panel lower edge; Trench is installed in low-lying place, the face of land, and the rainwater funnel links to each other with conduit with trench, is provided with grid in the conduit; And be connected to flow abandoning apparatus; Flow abandoning apparatus links to each other with reservoir, and reservoir links to each other with purifier, and purifier is connected to clear water reserviors again.
The little water washing device of described automation comprises water pump, pressure sensor, flow transmitter, level sensor, PLC switch board, electromagnetic valve, computer, host computer interface configuration environment and shower nozzle.Said shower nozzle is installed in the solar panel upper edge.Water pump is positioned at the clear water reserviors bottom, in reservoir and the clear water reserviors level sensor is installed.Be connected with in turn through pipe fitting from the clear water reserviors bottom: water pump, flow transmitter, pressure sensor, electromagnetic valve and shower nozzle.
The detected data of pressure sensor, flow transmitter and level sensor are passed to the PLC switch board, and can show on computers through the host computer configuration.
The step that the control method of large-scale photovoltaic array water saving cleaning systems provided by the invention comprises:
1) rainwater with rainfall perhaps cleans large-scale photovoltaic array solar cells plate water afterwards through the plate face rainwater that forms behind the solar panel; Come together in the rainwater main pipe through the rainwater funnel; Getting into the rainwater main pipe after surface rain confluxes through trench is conduit; Be provided with grid in the conduit, the utilization grid is held back the bigger object of volume in the former water, like foreign material such as leaf, polybags.Plate face rainwater and surface rain flow into flow abandoning apparatus after coming together in conduit, remove through abandoned stream, dispersion and concentration filter and flow into reservoir in the runoff behind the particulate matter.The water of reservoir is connected to cleaning equipment, in cleaning equipment, rainwater is carried out PROCESS FOR TREATMENT such as flocculation filtration sterilization, and the water after the processing is transported to clear water reserviors.
2) level sensor is monitored the water level situation of reservoir and clear water reserviors every day automatically, selects to start manual mode when eligible or starts automatic mode and clean.
Manual mode cleans, and when being applicable to any need water spray, after the equipment operation, switches to manual mode; Judge level condition then, have water just to continue to judge pressure condition, pressure is manually pressed first electromagnetic valve and is opened greater than 30kpa; First electromagnetic valve will be sprayed water, and manually presses second electromagnetic valve and opens, and second electromagnetic valve will be sprayed water; Press respectively and stop, first electromagnetic valve, second electromagnetic valve will stop, and have accomplished the function of manual water spray.If liquid level is not enough, the warning that can send out a warning, water level is low, sprays not water outlet; If pressure is not enough, not water outlet is sprayed in the warning that also can send out a warning.Automatic mode cleans, and is applicable to the unmanned situation, switches under the automatic mode, and setting and opening water spraying time is to spray water between the 5:00-6:00 morning, as long as detect the water spray request, as generated energy with just often compare reduction, just can spray water at setting-up time.Judge present fluid level condition then, pressure state, if meet preset threshold values, will automatic water jetting flushing, if do not meet then report to the police, take emergency measures.
Shower nozzle according to the invention is installed in the solar panel upper edge.Flow transmitter need be monitored each flushing and used how many water yields, according to the water supply volume control of economizing on water.
The present invention compared with prior art, have the following advantages and the high-lighting effect: 1. the present invention adopts the recovery rainwater, payes attention to environmental protection, conserve water resource.In China certain areas, water resource is poor, and the application of the present invention on engineering more embodied its value and potentiality, is the model of water saving.2. meteorological condition is used optimal control down: temperature, evaporation capacity, rainy, cloudy, cloudy composite factor control opening time; May be selected in 5:00-6:00 in morning; Clean under the assurance situation that temperature is lower, evaporation capacity is less, do not influence normal generating state simultaneously again.3. optimize the shower nozzle design of pipe networks, design the most reasonably shower nozzle combination, comprise the shower nozzle number, the spray angle, dissimilar matched combined realize water saving.4. this control system adopts the little water of automation to clean, and need not manually-operated, has saved manpower greatly.Advantages such as this control system has the reliability height, and is multiple functional, and interference resistance is strong, and is easy to use.Native system design of program operating system and equipment are always joined technology, can guarantee high-quality recovering effect and work steady in a long-term, and therefore very high environmental benefit and economic benefit are arranged.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention.
Fig. 2 is a system for reclaiming rainwater block diagram of the present invention.
Fig. 3 is the little water flushing of the present invention model machine flow chart.
Fig. 4 is the little water flushing of the present invention model machine structure chart.
Fig. 5 is a PLC program control flow chart of the present invention.
The specific embodiment
Set forth the present invention in detail below with reference to accompanying drawing.
As shown in the figure, 1-rainwater funnel; The 2-trench; The 3-conduit; The 4-flow abandoning apparatus; The 5-reservoir; The 6-purifier; The 7-clear water reserviors; The 8-water pump; The 9-pressure sensor; The 10-flow transmitter; The 11-level sensor; The 12-PLC switch board; The 13-electromagnetic valve; The 14-computer; The 15-shower nozzle; The 16-solar panel.The above-mentioned parts that particularly point out use of the present invention all can use commercially available general (main flow) product.
1, rainwater recycle device
Rainwater recycle device of the present invention such as Fig. 1 comprise rainwater funnel 1, trench 2, conduit 3, flow abandoning apparatus 4, reservoir 5, purifier 6 and clear water reserviors 7.Rainwater funnel 1 is installed in the solar panel lower edge; Trench 2 is installed in low-lying place, the face of land, and rainwater funnel 1 links to each other with conduit 3 with trench 2, is provided with grid in the conduit 3; And be connected to flow abandoning apparatus 4; Flow abandoning apparatus 4 links to each other with reservoir 5, and reservoir 5 links to each other with purifier 6, and purifier 6 is connected to clear water reserviors 7.
Flow abandoning apparatus, purifier can be selected commercially available general (first rain) rainwater flow-discarding device, water purification installation product.
The rainwater of rainfall is perhaps cleaned large-scale photovoltaic array solar cells plate water afterwards through the plate face rainwater that forms behind the solar panel; Come together in the rainwater main pipe through the rainwater funnel; Getting into the rainwater main pipe after surface rain confluxes through trench is conduit; Solar panel plate face rainwater and ground rainwater are collected, be provided with grid (, promptly when foreign material are too much, can manually clear up foreign material) in the conduit for manually clearing up foreign material; The utilization grid is held back the bigger object of volume in the former water, like foreign material such as leaf, polybags.Plate face rainwater and surface rain come together in conduit, flow into reservoir through behind the rainwater flow-discarding device then.The water of reservoir is connected to purifier, in cleaning equipment, rainwater is carried out PROCESS FOR TREATMENT such as flocculation filtration sterilization, and the water after the processing is transported to clear water reserviors.In clear water reserviors, can add the medicament that prevents the clear water reserviors change of water quality, accomplish the recovery of rainwater.
2, based on little water flushing device of sensor device
Like the little water washing device of the described automation of Fig. 3, comprise water pump 8, pressure sensor 9, flow transmitter 10, level sensor 11, electromagnetic valve 13, PLC switch board 12, computer 14, host computer interface configuration environment and shower nozzle 15.
Water pump 8 is positioned at the clear water reserviors bottom, and level sensor 11 is installed in reservoir and the clear water reserviors.Come out to be connected with respectively from water pump 8: pressure sensor 9, flow transmitter 10, electromagnetic valve 13 and shower nozzle 15 through pipe fitting.Pressure sensor 9, flow transmitter 10, level sensor 11 detected data are passed to the PLC switch board, and can be shown on computers through the host computer configuration.
Fig. 5 is a large-scale photovoltaic array water saving cleaning systems PLC program control flow chart according to the invention; Wherein, each electromagnetic valve can be controlled the folding of one group of two shower nozzle.Logical size according to photovoltaic battery panel, arrangement mode has calculated the method for designing of shower nozzle.For example, select 2 * 1 meters specifications, the arrangement mode of two row is considered in conjunction with the shower nozzle specification of selecting, experiment information summary up and down.Fan spray head is under the pressure of 0.2 MPa, and 160 ° of spray angles through angle calculation, raise 20 centimetres and can cover whole upper face; The track of square shower nozzle ejection is a cone, with plate face contact portion be ellipse, plate face and vertical plane have certain included angle; When being 50 ° with vertical angle, spray radius meets the demands, so far through angle calculation; The upper and lower plates face can both be washed into entire area, has guaranteed developing result.
Set two electromagnetic valves are arranged in the electromagnetic valve 13: first electromagnetic valve, second electromagnetic valve, actual electrical magnet valve quantity is determined by actual needs.
At first after the equipment operation, carry out selection of manual mode and automatic mode and judgement.
Manual mode cleans, when being applicable to any need water spray.Automatically monitor the water level situation of reservoir and clear water reserviors then through level sensor, the water level condition satisfies just continuation and judges pressure condition, and pressure is greater than 30kpa; Manually press first electromagnetic valve and open, first electromagnetic valve will be sprayed water, and manually presses second electromagnetic valve and opens; Second electromagnetic valve will be sprayed water; Press respectively and stop, first electromagnetic valve, second electromagnetic valve will stop, and have accomplished the function of manual water spray.If liquid level is not enough, the warning that can send out a warning, water level is low, sprays not water outlet; If pressure is not enough, not water outlet is sprayed in the warning that also can send out a warning.
Automatic mode cleans, and is applicable to the unmanned situation, switches under the automatic mode, and setting and opening water spraying time is to spray water between the 5:00-6:00 morning, as long as detect the water spray request, as generated energy with just often compare reduction, just can spray water at setting-up time.Automatically monitor the water level situation of reservoir and clear water reserviors then through level sensor, the water level condition satisfies just continuation and judges pressure condition, and pressure is greater than 30kpa; Meet preset threshold values; First electromagnetic valve will wash by automatic water jetting, continues to judge pressure condition, and pressure is greater than 50kpa; Then second electromagnetic valve will wash by automatic water jetting, and 20s closes water spray automatically and finishes.
With reference to Fig. 5, the configuration software operating procedure is: behind the opening of device, the configuration software operation selects screen to begin with manual and automatic mode, selects manually and automatic mode through the touch of touch-screen.After getting into manual mode, show information such as water level, ductwork pressure, weather conditions on the screen, whether manual work determines opens solenoid valve, the cleaning of spraying water.After getting into automatic mode, show information such as water level, ductwork pressure, weather conditions on the screen, not reporting to the police then gets into next page automatically, judges water spraying time and water spraying time is set, and the time meets carries out hydroblasting.
Technology of the present invention compared with prior art, and is not only easy for installation, with low cost; Do not damage the solar panel surface, free from environmental pollution, and can realize the dedusting of large solar cell panel is cleaned; Especially incorporated the theory that rainwater reclaims, realized saving water and energy.
The present invention comes together in conduit with plate face rainwater and surface rain, flows into reservoir through behind the rain water drainage.The water of reservoir is connected to cleaning equipment, in cleaning equipment, rainwater is carried out PROCESS FOR TREATMENT such as flocculation filtration sterilization, and the water after the processing is transported to clear water reserviors.Realized the conserve water resource through recycling rainwater.Pressure sensor monitoring ductwork pressure of the present invention; The water level situation of level sensor monitoring reservoir and clear water reserviors; Whether comprehensive decision water pump moves; The switch motion of decision solenoid control shower nozzle, flow transmitter need be monitored each flushing and used how many water yields, according to the water supply volume control of economizing on water.The present invention reclaims with little water flushing with rainwater and controls and combine, and is practical, more can energy conservation, have higher practical value simultaneously.
Claims (7)
1. large-scale photovoltaic array water saving cleaning systems is characterized in that it comprises: the little water washing device of rainwater retracting device and automation; Described rainwater retracting device comprises rainwater funnel, trench, conduit, flow abandoning apparatus, reservoir, purifier and clear water reserviors; The rainwater funnel is installed in the solar panel lower edge; Trench is installed in low-lying place, the face of land, and the rainwater funnel links to each other with conduit with trench, is provided with grid in the conduit; And be connected to flow abandoning apparatus; Flow abandoning apparatus links to each other with reservoir, and reservoir links to each other with purifier, and purifier is connected to clear water reserviors again; The little water washing device of described automation comprises water pump, pressure sensor, flow transmitter, level sensor, PLC switch board, electromagnetic valve, computer, host computer interface configuration environment and shower nozzle; Said shower nozzle is installed in the solar panel upper edge; Water pump is positioned at the clear water reserviors bottom, in reservoir and the clear water reserviors level sensor is installed; Be connected with in turn respectively through pipe fitting from the clear water reserviors bottom: water pump, flow transmitter, pressure sensor, electromagnetic valve and shower nozzle.
2. water saving cleaning systems according to claim 1 is characterized in that the folding of one group of two shower nozzle of described solenoid control, comprise fan-shaped, square two kinds of shower nozzles.
3. water saving cleaning systems according to claim 2 is characterized in that described Fan spray head is higher than 20 centimetres of cell panels; The track of square shower nozzle ejection is a cone, with plate face contact portion be oval, the angle of plate face and vertical plane is 50 to spend.
4. water saving cleaning systems according to claim 1 is characterized in that described conduit is provided with the hand screen net.
5. the control method of the described large-scale photovoltaic array water saving of a claim 1 cleaning systems is characterized in that the step that comprises:
1) rainwater with rainfall perhaps cleans large-scale photovoltaic array solar cells plate water afterwards through the plate face rainwater that forms behind the solar panel; Come together in the rainwater main pipe through the rainwater funnel; Getting into the rainwater main pipe after surface rain confluxes through trench is conduit; Be provided with grid in the conduit and hold back the bigger object of volume in the former water; Plate face rainwater and surface rain flow into flow abandoning apparatus after coming together in conduit, remove through abandoned stream, dispersion and concentration filter and flow into reservoir in the runoff behind the particulate matter; The water of reservoir is connected to cleaning equipment, in cleaning equipment, rainwater is carried out the flocculation filtration sterilization process and handles, and the water after the processing is transported to clear water reserviors;
2) level sensor is monitored the water level situation of reservoir and clear water reserviors every day automatically, selects to start manual mode when eligible or starts automatic mode and clean.
6. method according to claim 5 is characterized in that described manual mode cleaning step is: when needs are sprayed water, judge level condition; Have water just to continue to judge pressure condition, pressure is manually pressed first electromagnetic valve and is opened greater than 30kpa; First electromagnetic valve will be sprayed water, and manually presses second electromagnetic valve and opens, and second electromagnetic valve will be sprayed water; Press respectively and stop, first electromagnetic valve, second electromagnetic valve will stop, and have accomplished the function of manual water spray; If liquid level is not enough, the warning that can send out a warning, water level is low, sprays not water outlet; If pressure is not enough, not water outlet is sprayed in the warning that also can send out a warning.
7. method according to claim 5; It is characterized in that described automatic mode cleaning step is: the unmanned situation; Switch under the automatic mode, setting and opening water spraying time is to spray water between the 5:00-6:00 morning, as long as detect the water spray request; As generated energy with just often compare reduction, can spray water at setting-up time; Judge present fluid level condition then, pressure state, if meet preset threshold values, will automatic water jetting flushing, if do not meet then report to the police, take the emergency processing measure.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065334A (en) * | 2014-06-26 | 2014-09-24 | 信息产业电子第十一设计研究院科技工程股份有限公司华东分院（无锡） | Roof distributed photovoltaic power generation station battery assembly automatic cleaning device |
| CN104690024A (en) * | 2015-03-26 | 2015-06-10 | 北京京东方能源科技有限公司 | Photovoltaic power station cleaning system |
| CN105080920A (en) * | 2014-05-19 | 2015-11-25 | 敦煌国润太阳能野外实验站有限公司 | Full-automatic solar array air pressure water/steam dual-purpose cleaning system |
| CN106930352A (en) * | 2015-12-29 | 2017-07-07 | 珠海兴业绿色建筑科技有限公司 | Photovoltaic drives rainwater recycle environmental grounds cooling dust falling system |
| WO2017181546A1 (en) * | 2016-04-19 | 2017-10-26 | 朱小涛 | Automatic washing system for battery assembly of photovoltaic power plant |
| CN107447933A (en) * | 2017-08-24 | 2017-12-08 | 曲莉 | A kind of building roof rainwater-collecting processing equipment |
| CN108237092A (en) * | 2017-12-20 | 2018-07-03 | 昆明理工大学 | A kind of automatic cleaning apparatus of fishing light complementary solar solar panel |
| CN108496507A (en) * | 2018-05-24 | 2018-09-07 | 华南理工大学 | A kind of intelligent irrigation fertilizer apparatus and method using solar energy and non-traditional water source |
| CN110061691A (en) * | 2019-05-27 | 2019-07-26 | 南京工业大学 | A kind of solar panels bulky grain automatic dust removing system and method based on clean water circulation |
| CN113731919A (en) * | 2021-09-16 | 2021-12-03 | 深圳供电局有限公司 | Water washing equipment suitable for helicopter |
| CN115041450A (en) * | 2022-06-17 | 2022-09-13 | 几何智慧城市科技(广州)有限公司 | Photovoltaic glass plate cleaning method and system, computer equipment and storage medium |
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| CN107447933A (en) * | 2017-08-24 | 2017-12-08 | 曲莉 | A kind of building roof rainwater-collecting processing equipment |
| CN108237092A (en) * | 2017-12-20 | 2018-07-03 | 昆明理工大学 | A kind of automatic cleaning apparatus of fishing light complementary solar solar panel |
| CN108496507A (en) * | 2018-05-24 | 2018-09-07 | 华南理工大学 | A kind of intelligent irrigation fertilizer apparatus and method using solar energy and non-traditional water source |
| CN110061691A (en) * | 2019-05-27 | 2019-07-26 | 南京工业大学 | A kind of solar panels bulky grain automatic dust removing system and method based on clean water circulation |
| CN110061691B (en) * | 2019-05-27 | 2024-05-03 | 南京工业大学 | Solar panel large particle automatic dust removal system and method based on clean water circulation |
| CN113731919A (en) * | 2021-09-16 | 2021-12-03 | 深圳供电局有限公司 | Water washing equipment suitable for helicopter |
| CN115041450A (en) * | 2022-06-17 | 2022-09-13 | 几何智慧城市科技(广州)有限公司 | Photovoltaic glass plate cleaning method and system, computer equipment and storage medium |
| GB2619823A (en) * | 2022-06-17 | 2023-12-20 | Jihe Smart Urban Tech Guangzhou Co Ltd | Method, system, computer device, and storage medium for cleaning photovoltaic glass panel |
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Application publication date: 20120411 |