CN110841964A - Low-cost photovoltaic system with intelligent cleaning function - Google Patents
Low-cost photovoltaic system with intelligent cleaning function Download PDFInfo
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- CN110841964A CN110841964A CN201911155035.1A CN201911155035A CN110841964A CN 110841964 A CN110841964 A CN 110841964A CN 201911155035 A CN201911155035 A CN 201911155035A CN 110841964 A CN110841964 A CN 110841964A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention discloses a low-cost photovoltaic system with an intelligent cleaning function, which comprises a plurality of photovoltaic panels and a control device, wherein the photovoltaic panels are provided with a first spraying system, the control device is arranged on the control device, the first spraying system comprises a first spraying device and a first control valve which are arranged on the upper portion of each photovoltaic panel, the photovoltaic system further comprises a first light-transmitting glass system and a second light-transmitting glass system, the first light-transmitting glass system comprises first light-transmitting glass, a photovoltaic cleaning robot and a first illumination sensor, the second light-transmitting glass system comprises second light-transmitting glass, a second spraying device, a second water inlet pipe, a second control valve and a second illumination sensor, and the control device is respectively connected with the photovoltaic cleaning robot, the first control valve, the second control valve, the first illumination sensor and the second illumination sensor and used for controlling the work of the first control valve and the second control valve. The invention has simple structure and low cost, can ensure that the cleaning frequency of the photovoltaic panel is more reasonable, and further reduces the operation cost of the photovoltaic system.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a photovoltaic system which is low in cost and has an intelligent cleaning function.
Background
Solar photovoltaic power generation is one of hot spots which are increasingly concerned about in the world as clean and environment-friendly renewable energy, and in recent years, solar photovoltaic power generation is widely popularized at home and abroad, and the construction of photovoltaic power stations is actively carried out. However, due to the technical development limitations of material science and the like, the conversion efficiency of the photovoltaic module is still at a low level, which is generally not more than 17%, and the external environment can also have a great adverse effect on the conversion efficiency during power generation, such as dust covering on the surface of the photovoltaic module. Because the photovoltaic module needs to be directly irradiated by sunlight, and a large-scale photovoltaic power station is mainly positioned in dry and low-water regions in inland, a large amount of dust in the air covers the photovoltaic module, on one hand, the sunlight can be shielded from irradiating the photovoltaic module, the solar radiation amount projected to the surface of a photovoltaic cell is reduced, and the power generation amount of the photovoltaic module is reduced; on the other hand, the hot spot effect is caused, so that not only is the power generation loss caused and the service life of the component is influenced, but also potential safety hazards are possibly caused.
In order to reduce the adverse effect of dust on the photovoltaic module, the photovoltaic module is cleaned regularly in the prior art, the cleaning frequency of a wet area is generally 2-3 months, and the cleaning frequency of a dry area such as northwest is generally 15-30 days. At present, the cleaning modes of the photovoltaic module mainly comprise manual scrubbing, high-pressure water gun cleaning, spray cleaning, professional equipment cleaning, on-chip robot cleaning and the like, each cleaning mode has various advantages and disadvantages, and the cleaning mode which is low in cost and good in cleaning effect is absent at present. The manual scrubbing is that workers scrub the photovoltaic module manually, and has the advantages of low water consumption and clean scrubbing, and has the disadvantages of low cleaning efficiency, long cleaning period and high labor cost; the high-pressure water gun cleaning method has the advantages that cleaning efficiency is high, and the defects that water consumption is large, cleaning effect is good, cracks appear in the photovoltaic module, and a mountain land power station cannot be applied are caused; the photovoltaic module cleaning device has the advantages that manual work is not needed, cleaning efficiency is high, cleaning effect is general, water consumption is large, professional equipment cleaning is that professional cleaning vehicle equipment is adopted to clean the photovoltaic module in sequence, water consumption is small, cleaning speed is high, cleaning effect is good, cleaning cost is high, the photovoltaic module cleaning device is only suitable for flat ground and needs professional operation, robot cleaning on a chip is that climbing wall type intelligent cleaning equipment installed on the photovoltaic module is used for cleaning the photovoltaic module, cleaning effect is good, water consumption is low, manual work is not needed, only one photovoltaic panel can be cleaned, the photovoltaic module cannot be automatically changed to another solar panel from one solar panel for cleaning, large-scale investment and use are difficult, and application cost is high. In addition, the cleaning cycle of the photovoltaic module is mostly judged according to experience in the prior art, the cleaning frequency is too low, the photovoltaic conversion efficiency is influenced, the cleaning frequency is too high, water resource waste is caused, and the operation cost of the power generation system is improved.
In order to solve the above-mentioned technical problems, the invention patent No. 201711166079.5 entitled "a method and apparatus for controlling cleaning of dust on surface of photovoltaic panel" provides a technique for controlling cleaning of dust on surface of photovoltaic panel, by collecting the daily power generation information generated by the photovoltaic panel after the surface of the photovoltaic panel accumulates dust of different days, a basic database can be obtained, after economic factors such as electricity price and the like are determined, the economic electricity fee loss of the photovoltaic panel can be determined according to the basic database, the optimal cleaning interval time is determined on the premise of determining the cleaning cost, although the patent technology can well determine the optimal cleaning interval time of the photovoltaic panel, a local basic database needs to be established during application, the test needs to be carried out for a plurality of continuous days, the influence of weather and environment during the test is large, the cost for establishing the database is too high, and the photovoltaic panel cleaning interval time is only suitable for large-scale photovoltaic power stations in specific places.
The patent No. 201310724490.5 entitled "an automatic cleaning system for photovoltaic modules" provides an automatic cleaning technique for photovoltaic modules, which analyzes and calculates environmental parameters of photovoltaic modules to obtain an accumulated value of pollutants, and generates a cleaning control signal for cleaning pollutants when the accumulated value of pollutants is greater than a preset accumulated value. Although the patent technology realizes the automatic cleaning of the photovoltaic module and saves a large amount of manpower and material resources, on one hand, the method does not explain in detail how to determine the accumulated value of the pollutants generated under the accumulation of various environmental factors according to the statistical algorithm of environmental parameters and the accumulation of the pollutants, and on the other hand, because the environmental parameters of different regions and different weathers are different, the error of the accumulated value of the pollutants determined by calculation under various environments is large, and the photovoltaic module is enabled to have large deviation when being cleaned.
At present, the prior art still lacks the photovoltaic board cleaning technology that the cost is lower, the cleaning performance is better and dust accumulation judgement is comparatively accurate.
Disclosure of Invention
The photovoltaic system comprises a photovoltaic panel, a first transparent glass and a second transparent glass, wherein the first transparent glass and the second transparent glass are arranged on one side of the photovoltaic panel in parallel, the first transparent glass and the second transparent glass have the same dust accumulation with the photovoltaic panel, the photovoltaic panel is controlled to be cleaned according to the illumination value of the back surface of the first transparent glass and the illumination value of the back surface of the second transparent glass, meanwhile, the uncleaned dust of the photovoltaic panel after being sprayed and cleaned is judged whether to send reminding information to a mobile phone of a photovoltaic system manager or not by adopting stage loss power generation indexes, so that the cleaning frequency of the photovoltaic panel is more reasonable, and the operation cost of the photovoltaic system is further reduced.
Therefore, the invention adopts the following technical scheme: the utility model provides a low-cost just has intelligent cleaning function's photovoltaic system, is equipped with first spraying system's photovoltaic board and controlling means including the polylith, first spraying system is including installing first spray set, first inlet tube on photovoltaic board upper portion and installing the first control valve on first inlet tube, controlling means is connected with first control valve, the delivery port and the water inlet intercommunication of first spray set of first inlet tube, photovoltaic system still includes parallel mount at arbitrary photovoltaic board one side first printing opacity glass system and second printing opacity glass system, first printing opacity glass system includes first printing opacity glass, installs the photovoltaic cleaning robot on first printing opacity glass and sets up the first light intensity sensor at first printing opacity glass back, second printing opacity glass system includes second printing opacity glass, installs the second spray set on second printing opacity glass upper portion, The control device is connected with the photovoltaic cleaning robot, the first control valve, the second control valve, the first illumination sensor and the second illumination sensor respectively, is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period, and is further used for controlling the work of the first control valve and the second control valve respectively according to the illumination value detected by the first illumination sensor and the illumination value detected by the second illumination sensor when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass.
Further, the control device comprises a first control module, a first comparison module, a second control module and a third control module,
the first control module is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period,
the first comparison module is used for comparing the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor with a preset ratio when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass;
the second control module is used for controlling the first control valve and the second control valve to be opened for a first preset time to enable the first spraying device to clean the photovoltaic panel and enable the second spraying device to clean the second light-transmitting glass when the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor is smaller than a preset ratio;
and the third control module is used for controlling the first control valve and the second control valve not to work when the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor is greater than or equal to a preset ratio.
Furthermore, the first light-transmitting glass system further comprises a first light-shielding box which is arranged on the back surface of the first light-transmitting glass and is located on one side of the first illuminance sensor, the first illuminance sensor is located in the first light-shielding box, the second light-transmitting system further comprises a second light-shielding box which is arranged on the back surface of the second light-transmitting glass and is located on one side of the second illuminance sensor, and the second illuminance sensor is located in the second light-shielding box.
Further, the photovoltaic panel comprises light-transmitting glass, the first light-transmitting glass and the second light-transmitting glass are completely the same in structure, size and light-transmitting performance, and the second light-transmitting glass is made of the same material as the light-transmitting glass.
Further, the ratio of the water spraying amount of the first spraying device to the water spraying amount of the second spraying device is equal to the ratio of the length of the photovoltaic panel to the length of the second light-transmitting glass.
Further, the photovoltaic system with low cost and an intelligent cleaning function further comprises a GSM module and a reminding device, wherein the reminding device is respectively connected with the control device and the GSM module, the GSM module is used for sending reminding information to a mobile phone of a photovoltaic system manager, the control device is also used for sending a cleaning signal and a cleaning date to the reminding device when controlling the first control valve or the second control valve to be opened, and the reminding device comprises a power generation amount acquisition module, a receiving module, a power generation amount accumulation module, a first detection module, a second detection module, a calculation module and a second comparison module;
the generating capacity acquisition module is used for acquiring and storing daily generating capacity of the photovoltaic system;
the receiving module is used for receiving and storing the cleaning signal and the cleaning date sent by the control device each time, wherein when the control device sends the cleaning signal for the first time, the date of the photovoltaic system when being used is recorded as the previous cleaning date;
the electric energy generation accumulation module is used for accumulating the daily electric energy generation of the photovoltaic system between the previous cleaning date and the current cleaning date when the control device sends the cleaning signal and the cleaning date each time, and recording the accumulated electric energy generation as the stage electric energy generation;
the first detection module is used for acquiring an illumination value detected by the first illumination sensor and an illumination value detected by the second illumination sensor when the photovoltaic system is just used, and recording the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as a maximum ratio;
the second detection module is used for acquiring an illumination value detected by the first illumination sensor and an illumination value detected by the second illumination sensor when the photovoltaic system is cleaned currently, and recording the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as a current ratio;
the calculation module is used for multiplying the difference value of the maximum ratio and the current ratio by the stage power generation amount to obtain the stage loss power generation amount;
the second comparison module is used for judging whether the stage loss generating capacity is larger than the preset loss generating capacity or not, if so, sending reminding information to a mobile phone of a photovoltaic system manager, and if not, not sending the reminding information to the mobile phone of the photovoltaic system manager.
The invention has the beneficial effects that:
(1) the photovoltaic cleaning robot is used for judging whether the second light-transmitting glass and the photovoltaic panel need to be cleaned or not according to the illuminance value of the back of the second light-transmitting glass, which is the same as the dust coverage degree of the photovoltaic panel, and the illuminance value of the back of the first light-transmitting glass, and the illuminance value of the back of the second light-transmitting glass, which are the same as the dust coverage degree of the photovoltaic panel, and the method does not need to collect daily generated energy information generated by the photovoltaic panel after different days of dust accumulate on the surface and establish a basic database, has simple structure and lower cost, is suitable for photovoltaic systems of various scales, ensures that the cleaning frequency of the photovoltaic system is more reasonable, and further reduces the operation cost of the photovoltaic system;
(2) aiming at the problem that partial dust is removed for a long time when the photovoltaic panel is sprayed and cleaned, the stage loss generated energy is calculated according to the ratio of the illuminance value of the back of the second light-transmitting glass to the illuminance value of the back of the first light-transmitting glass after each spraying and cleaning of the photovoltaic system and the stage generated energy between two cleaning days before and after the photovoltaic system, whether reminding information is sent to a mobile phone of a photovoltaic system manager is judged by comparing the stage loss generated energy with the preset stage generated energy corresponding to the thorough cleaning cost of the photovoltaic panel, the photovoltaic system manager can timely prepare the thorough cleaning work of the photovoltaic panel after receiving the reminding information, and the economic benefit of the photovoltaic system is further improved by comparing the economic benefit of photovoltaic power generation with the thorough cleaning cost of the photovoltaic panel.
Drawings
Fig. 1 is a schematic top view of a photovoltaic system with low cost and smart cleaning capability.
Fig. 2 is a schematic side view of a photovoltaic panel.
Fig. 3 is a schematic side view of the first transparent glass system.
Fig. 4 is a schematic structural diagram of a second light-transmitting glass system.
Fig. 5 is a schematic structural view of the water supply apparatus.
Fig. 6 is a schematic view of the connection of the control device to the various components.
Description of reference numerals: 1-a first spraying device, 2-a first water inlet pipe, 3-a first control valve, 4-a first light-transmitting glass system, 5-first light-transmitting glass, 6-a photovoltaic cleaning robot, 7-a second spraying device, 8-a second water inlet pipe, 9-a second control valve, 10-second light-transmitting glass, 11-a second light-transmitting glass system, 12-a photovoltaic panel, 13-a first illumination sensor, 14-a first shading box, 15-a second illumination sensor, 16-a second shading box, 17-a water supply pipe, 18-a water tank and 19-a water pump.
Detailed Description
The invention is explained in further detail below with reference to specific embodiments and with reference to the drawings.
Referring to fig. 1 to 6, the present embodiment provides a low-cost photovoltaic system with intelligent cleaning function, which includes a plurality of photovoltaic panels 12 equipped with a first spraying system, and a control device, where the first spraying system includes a first spraying device 1 installed on the upper portion of the photovoltaic panel, a first water inlet pipe 2, and a first control valve 3 installed on the first water inlet pipe, the first spraying device 1 may be a spray pipe with a water spraying slit, or a spray pipe with a plurality of nozzles, the water spraying slit and the nozzles are all facing the photovoltaic panel, the control device is connected to the first control valve for controlling the operation of the first control valve, the water outlet of the first water inlet pipe 2 is communicated with the water inlet of the first spraying device, the water inlet may be communicated with the water outlet of a tap water pipe in the prior art, the tap water with higher water pressure in the tap water pipe, such as the tap water pipe outlet with higher water pressure in a high-rise building, the water supply device can also be communicated, for example, the water supply device is a water tank provided with a water pump, as shown in fig. 5, the water inlet of the first water inlet pipe is communicated with the outlet of the water supply pipe 17 through a water pipe, the water inlet of the water supply pipe is communicated with the water pump or the water supply pipe is provided with the water pump, wherein the water pump is the water pump with a pressure sensor, the water pump is automatically powered off and closed when the water pressure of the water supply pipe or the first water inlet pipe is too high, the water pump is automatically powered on and opened when the water pressure is too low, namely, the.
The photovoltaic system further comprises a first light-transmitting glass system 4 and a second light-transmitting glass system 11 which are arranged on one side of any one photovoltaic panel in parallel, the first light-transmitting glass system 4 comprises first light-transmitting glass 5, a photovoltaic cleaning robot 6 arranged on the first light-transmitting glass and a first illumination sensor 13 arranged on the back of the first light-transmitting glass, the photovoltaic cleaning robot 6 is only used for cleaning the first light-transmitting glass and can adopt a cleaning robot with relatively low cost in the prior art, and the first illumination sensor 13 is preferably arranged on the back of the first light-transmitting glass by adopting light-transmitting EVA (ethylene vinyl acetate) glue to be bonded and is oriented towards the first light-transmitting glass and is used for detecting the illumination of sunlight after the sunlight penetrates through the first light-transmitting glass, namely the illumination of the back of the first light-transmitting glass.
The second light-transmitting glass system 11 comprises second light-transmitting glass 10, a second spraying device 7 arranged on the upper portion of the second light-transmitting glass, a second water inlet pipe 8, a second control valve 9 and a second illumination sensor 15 arranged on the back of the second light-transmitting glass, the first light-transmitting glass 10 and the second light-transmitting glass 5 are arranged in parallel, the second spraying device 7 preferably adopts the same structure as the first spraying device, the water outlet of the second water inlet pipe 8 is communicated with a second spraying device, the water inlet can be communicated with the water outlet of a tap water pipe and can also be communicated with a water supply device, the same water inlet mode as the first water inlet pipe is preferably adopted when in selection, the second illuminance sensor 15 is preferably mounted on the back of the second light-transmitting glass by using a light-transmitting EVA adhesive, and faces the second light-transmitting glass, the sunlight detector is used for detecting the illumination of sunlight after the sunlight passes through the second light-transmitting glass, namely the illumination of the back of the second light-transmitting glass.
The control device is connected with the photovoltaic cleaning robot, the first control valve, the second control valve, the first illumination sensor and the second illumination sensor respectively, is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period, and is further used for controlling the first control valve and the second control valve to work respectively according to the illumination value detected by the first illumination sensor and the illumination value detected by the second illumination sensor when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass.
Specifically, the control device comprises a first control module, a first comparison module, a second control module and a third control module.
The first control module is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period, wherein the preset time period is a certain time period every day, such as 9: 00-9: 30 every day, the photovoltaic cleaning robot cleans the first light-transmitting glass within the time period of 9: 00-9: 30 every day to enable the first light-transmitting glass to be almost completely clean, and the light transmittance of the cleaned first light-transmitting glass is maximum and can be used as contrast glass for judging the dust accumulation degree of the second light-transmitting glass.
The first comparison module is used for comparing the ratio of the illuminance value detected by the second illuminance sensor to the illuminance value detected by the first illuminance sensor with a preset ratio when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass, wherein the ratio of the illuminance value detected by the second illuminance sensor to the illuminance value detected by the first illuminance sensor is the last time point of the preset time period when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass every day, the illuminance value detected by the second illuminance sensor is the illuminance of sunlight after the sunlight penetrates through the second light-transmitting glass or the illuminance of the back of the second light-transmitting glass, the illuminance value detected by the first illuminance sensor is the illuminance of sunlight after the sunlight penetrates through the first light-transmitting glass or the illuminance of the back of the first light-transmitting glass, and the preset ratio is preferably 0.8-0.9.
And the second control module is used for controlling the first control valve and the second control valve to be opened for a first preset time to enable the first spraying device to clean the photovoltaic panel and enable the second spraying device to clean the second light-transmitting glass when the ratio of the illuminance value detected by the second illuminance sensor to the illuminance value detected by the first illuminance sensor is smaller than a preset ratio.
And the third control module is used for controlling the first control valve and the second control valve not to work when the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor is greater than or equal to a preset ratio.
Specifically, because the first light-transmitting glass is cleaned by the photovoltaic cleaning robot, and the dust accumulation degree of the surfaces of the second light-transmitting glass and the photovoltaic panel is the same, under the same sunlight illumination, the illumination value detected by the first illumination sensor does not change, the more the dust accumulation of the second light-transmitting glass, the smaller the illumination value detected by the second illumination sensor, and the smaller the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor, by using this principle, the operation of the first control valve and the first control valve is controlled according to the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor and the preset ratio,
when the ratio of the illuminance value detected by the second illuminance sensor to the illuminance value detected by the first illuminance sensor is smaller than the preset ratio, the accumulation of dust on the surfaces of the photovoltaic panel and the second light-transmitting glass is more, and the corresponding control valve is opened for spraying and cleaning.
In order to better detect the illumination intensity of sunlight after passing through first printing opacity glass and second printing opacity glass, first printing opacity glass system is still including installing at the first printing opacity glass back and being located the first illumination sensor one side first light-shading case 14, first illumination sensor 13 is located at first light-shading incasement, second printing opacity system is still including installing at the second printing opacity glass back and being located the second illumination sensor one side second light-shading case 16, second illumination sensor 15 is located at the second light-shading incasement, first light-shading case and second light-shading case all adopt one end open-ended box, the box adopts light-tight material.
In order to enable the dust accumulation degree of the surface of the second light-transmitting glass to be the same as that of the photovoltaic panel and further improve the accuracy of photovoltaic panel cleaning frequency judgment, the photovoltaic panel comprises light-transmitting glass, the structure, the size and the light-transmitting performance of the first light-transmitting glass and the second light-transmitting glass are completely the same, and the second light-transmitting glass is made of the same material as the light-transmitting glass, such as commonly-used 5mm tempered light-transmitting glass in the photovoltaic panel.
In order to ensure that the surface cleanness of the second light-transmitting glass and the photovoltaic panel after spray cleaning is the same, the ratio of the water spraying quantity of the first spraying device to the water spraying quantity of the second spraying device is equal to the ratio of the length of the photovoltaic panel to the length of the second light-transmitting glass.
In this embodiment, photovoltaic system's washing mainly adopts the washing mode of spraying, but the small part dust is difficult to be got rid of through spraying the washing because long-term adhesion is on the photovoltaic board surface, and if this part dust is not clear away for a long time, photovoltaic system uses for a long time and will lose great generated energy, if adopt modes such as artifical scrubbing, professional equipment washing thoroughly to clear away, the cleaning cycle is difficult to judge again, and the cycle is short can greatly improve photovoltaic system's running cost.
The photovoltaic panel is spraying and cleaning the part dust that is difficult to get rid of for reasonable thorough cleaing away, further improves photovoltaic system's economic benefits, low-cost and photovoltaic system who has intelligent cleaning function still includes GSM module and reminding device, reminding device is connected with controlling means, GSM module respectively, the GSM module is used for sending warning information to photovoltaic system administrator's cell-phone, controlling means still is used for sending cleaning signal and cleaning date to reminding device when controlling first control valve or second control valve and just opening.
The reminding device comprises a generating capacity obtaining module, a receiving module, a generating capacity accumulation module, a first detection module, a second detection module, a calculation module and a second comparison module.
The generating capacity acquisition module is used for acquiring and storing daily generating capacity of the photovoltaic system, and can be realized by acquiring daily generating capacity data of the controller in the photovoltaic system.
The receiving module is used for receiving and storing the cleaning signal and the cleaning date sent by the control device each time, wherein when the control device sends the cleaning signal for the first time, the date when the photovoltaic system is used is recorded as the previous cleaning date, the previous cleaning date can be manually preset in the reminding device in advance, and the photovoltaic system, the control device and the reminding device are started simultaneously when the photovoltaic system, the control device and the reminding device are used.
The power generation amount accumulation module is used for accumulating the daily power generation amount of the photovoltaic system between the previous cleaning date and the current cleaning date when the control device sends the cleaning signal and the cleaning date each time, and recording the accumulated power generation amount as the stage power generation amount, wherein if the previous cleaning date is 2018, 6 and 1 month, the current cleaning date is 2018, 6 and 30 months, and the stage power generation amount is the accumulated value of the daily power generation amount between 2018, 6 and 1 month and 2018, 6 and 30 months.
The first detection module is used for acquiring an illumination value detected by the first illumination sensor and an illumination value detected by the second illumination sensor when the photovoltaic system is just used, and recording a ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as a maximum ratio, wherein the surfaces of the first light-transmitting glass, the second light-transmitting glass and the photovoltaic panel are not covered by dust when the photovoltaic system is just used.
The second detection module is used for acquiring the illumination value detected by the first illumination sensor and the illumination value detected by the second illumination sensor when the photovoltaic system is cleaned currently, and recording the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as the current ratio.
The calculation module is used for multiplying the difference value of the maximum ratio and the current ratio by the stage power generation amount to obtain the stage loss power generation amount.
The second comparison module is used for judging whether the stage loss generating capacity is larger than the preset loss generating capacity or not, if so, sending reminding information to a mobile phone of a photovoltaic system manager, and if not, not sending the reminding information to the mobile phone of the photovoltaic system manager.
Specifically, the preset loss power generation amount can be calculated and determined according to the local electricity price and the photovoltaic system thorough cleaning cost, if the photovoltaic system thoroughly cleans dust adhered to the surface after multiple spray cleaning in a manual cleaning mode, the photovoltaic system thorough cleaning cost can be determined according to local manual cleaning cost, the preset loss power generation amount can be obtained by dividing the photovoltaic system thorough cleaning cost by the local electricity price, if the stage loss power generation amount is larger than the preset loss power generation amount, it is indicated that the economic benefit of the photovoltaic system is obviously reduced due to the fact that dust which is not cleaned after spray cleaning exists for a long time, and a photovoltaic system manager needs to consider to thoroughly clean the photovoltaic panel and the second light-transmitting glass in modes of manually cleaning the photovoltaic system or cleaning professional equipment and the like.
It should be noted that, after the photovoltaic system is cleaned thoroughly by manual scrubbing or professional equipment cleaning, the control device and the reminding device are preferably restarted and the original data is cleared away because the surfaces of the photovoltaic panel, the second transparent glass and the first transparent glass are not covered by dust, and the photovoltaic system is used as a starting point for corresponding monitoring and judgment.
The protection scope of the present invention is not limited to the above description, and any other products with the same or similar technical solutions as or to the present invention, regardless of the shape or structure, are within the protection scope of the present invention.
Claims (6)
1. The utility model provides a low-cost and have intelligent cleaning function's photovoltaic system, is equipped with photovoltaic board (12) and controlling means of first spraying system including the polylith, first spraying system includes first spray set (1), first inlet tube (2) and first control valve (3), a serial communication port, photovoltaic system is still including parallel mount first printing opacity glass system (4) and second printing opacity glass system (11) in arbitrary photovoltaic board one side, first printing opacity glass system (4) include first printing opacity glass (5), install photovoltaic cleaning robot (6) on first printing opacity glass and set up first light intensity sensor (13) at first printing opacity glass back, second printing opacity glass system (11) include second printing opacity glass (10), install second spray set (7), second inlet tube (8) on second printing opacity glass upper portion, The control device is connected with the photovoltaic cleaning robot, the first control valve, the second control valve, the first illumination sensor and the second illumination sensor respectively, is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period, and is further used for controlling the work of the first control valve and the second control valve respectively according to the illumination value detected by the first illumination sensor and the illumination value detected by the second illumination sensor when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass.
2. The low-cost photovoltaic system with intelligent cleaning function according to claim 1, wherein the control device comprises a first control module, a first comparison module, a second control module and a third control module,
the first control module is used for controlling the photovoltaic cleaning robot to clean the first light-transmitting glass within a preset time period,
the first comparison module is used for comparing the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor with a preset ratio when the photovoltaic cleaning robot finishes cleaning the first light-transmitting glass;
the second control module is used for controlling the first control valve and the second control valve to be opened for a first preset time to enable the first spraying device to clean the photovoltaic panel and enable the second spraying device to clean the second light-transmitting glass when the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor is smaller than a preset ratio;
and the third control module is used for controlling the first control valve and the second control valve not to work when the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor is greater than or equal to a preset ratio.
3. The photovoltaic system with low cost and intelligent cleaning function according to claim 1 or 2, wherein the first light-transmitting glass system further comprises a first light-shielding box (14) installed on the back of the first light-transmitting glass and located on one side of the first illuminance sensor, the first illuminance sensor (13) is located in the first light-shielding box, the second light-transmitting system further comprises a second light-shielding box (16) installed on the back of the second light-transmitting glass and located on one side of the second illuminance sensor, and the second illuminance sensor (15) is located in the second light-shielding box.
4. The low-cost photovoltaic system with intelligent cleaning function according to claim 3, wherein the photovoltaic panel comprises transparent glass, the first transparent glass and the second transparent glass have the same structure, size and light transmittance, and the second transparent glass is made of the same material as the transparent glass.
5. The low-cost photovoltaic system with intelligent cleaning function according to claim 1 or 3, wherein the ratio of the water spraying amount of the first spraying device to the water spraying amount of the second spraying device is equal to the ratio of the length of the photovoltaic panel to the length of the second light-transmitting glass.
6. The low-cost photovoltaic system with the intelligent cleaning function according to claim 1, 2 or 4, further comprising a GSM module and a reminding device, wherein the reminding device is respectively connected with the control device and the GSM module, the GSM module is used for sending reminding information to a mobile phone of a photovoltaic system administrator, the control device is further used for sending a cleaning signal and a cleaning date to the reminding device when controlling the first control valve or the second control valve to be opened, and the reminding device comprises a power generation amount acquisition module, a receiving module, a power generation amount accumulation module, a first detection module, a second detection module, a calculation module and a second comparison module;
the generating capacity acquisition module is used for acquiring and storing daily generating capacity of the photovoltaic system;
the receiving module is used for receiving and storing the cleaning signal and the cleaning date sent by the control device each time, wherein when the control device sends the cleaning signal for the first time, the date of the photovoltaic system when being used is recorded as the previous cleaning date;
the electric energy generation accumulation module is used for accumulating the daily electric energy generation of the photovoltaic system between the previous cleaning date and the current cleaning date when the control device sends the cleaning signal and the cleaning date each time, and recording the accumulated electric energy generation as the stage electric energy generation;
the first detection module is used for acquiring an illumination value detected by the first illumination sensor and an illumination value detected by the second illumination sensor when the photovoltaic system is just used, and recording the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as a maximum ratio;
the second detection module is used for acquiring an illumination value detected by the first illumination sensor and an illumination value detected by the second illumination sensor when the photovoltaic system is cleaned currently, and recording the ratio of the illumination value detected by the second illumination sensor to the illumination value detected by the first illumination sensor as a current ratio;
the calculation module is used for multiplying the difference value of the maximum ratio and the current ratio by the stage power generation amount to obtain the stage loss power generation amount;
the second comparison module is used for judging whether the stage loss generating capacity is larger than the preset loss generating capacity or not, if so, sending reminding information to a mobile phone of a photovoltaic system manager, and if not, not sending the reminding information to the mobile phone of the photovoltaic system manager.
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| CN118095816A (en) * | 2024-04-29 | 2024-05-28 | 鼎晟光伏能源有限公司 | Periodic cleaning management system and management method for intelligent photovoltaic power station |
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