CN113695295B - Cleaning method, device and medium for photovoltaic module - Google Patents
Cleaning method, device and medium for photovoltaic module Download PDFInfo
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- CN113695295B CN113695295B CN202110911335.9A CN202110911335A CN113695295B CN 113695295 B CN113695295 B CN 113695295B CN 202110911335 A CN202110911335 A CN 202110911335A CN 113695295 B CN113695295 B CN 113695295B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 243
- 238000000034 method Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 239000000428 dust Substances 0.000 claims abstract description 73
- 239000012530 fluid Substances 0.000 claims description 25
- 238000009825 accumulation Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007921 spray Substances 0.000 description 14
- 239000010865 sewage Substances 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000010248 power generation Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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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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- 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
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- 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
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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a cleaning method, a device and a medium of a photovoltaic module, wherein the method comprises the following steps: acquiring dust information of each photovoltaic unit to be cleaned; acquiring cleaning parameters of each photovoltaic unit to be cleaned according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time; and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively. The technical problem that the photovoltaic module is not cleanly cleaned in the prior art is solved, and the cleaning effect of the photovoltaic module is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a cleaning method, a cleaning device and a cleaning medium for a photovoltaic module.
Background
The system is especially a distributed power station on a color steel tile roof, and dust has great influence on the power generation capacity of the system. Cleaning the dust from the components is a major difficulty faced by power station owners. The traditional dust cleaning of the power station generally adopts manual cleaning except natural precipitation dust removal, the cleaning frequency is low, and the labor cost is higher. The assembly dust of intelligence cleaning robot washs the arrangement requirement of strict in the operation in-process that can bring the risk of component subfissure to the subassembly, and cleans robot's disposable input cost and maintenance cost height.
The existing technology cleans dust on the surface of the component through a rotary spray head and a spray head at the bottom of the component, the bottom spray head has very high requirements on construction, and once the bottom spray head is deviated from a certain angle, the cleaning effect is greatly reduced, dust deposition still remains at the bottom of the component, so that the photovoltaic component is not cleaned completely.
Disclosure of Invention
The embodiment of the application aims to solve the technical problem that a photovoltaic module is not cleanly cleaned in the prior art by providing a cleaning method, a cleaning device and a cleaning medium for the photovoltaic module.
In order to achieve the above object, an embodiment of the present application provides a method for cleaning a photovoltaic module, the photovoltaic module is provided with a flow director, at least one of the photovoltaic modules forms a photovoltaic unit, and the method for cleaning the photovoltaic module includes:
acquiring dust information of each photovoltaic unit to be cleaned;
cleaning parameters of each photovoltaic unit to be cleaned are obtained according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time;
and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters.
Optionally, the step of cleaning the corresponding photovoltaic module of the photovoltaic unit to be cleaned according to the cleaning parameters respectively includes:
when the number of the photovoltaic units to be cleaned is at least two, acquiring the cleaning priority of each photovoltaic unit to be cleaned;
and respectively adopting the corresponding cleaning parameters to clean the photovoltaic modules of the photovoltaic units to be cleaned based on the sequence of the cleaning priority from high to low.
Optionally, the step of obtaining the cleaning priority of each photovoltaic unit to be cleaned includes:
determining the dust accumulation grade of each photovoltaic unit to be cleaned according to the dust information;
and determining the cleaning priority of each photovoltaic unit to be cleaned according to the dust accumulation grade, wherein the photovoltaic unit to be cleaned with the high dust accumulation grade has higher priority than the photovoltaic unit to be cleaned with the low dust accumulation grade.
Optionally, the cleaning method of the photovoltaic module comprises the following steps:
acquiring the time interval between the cleaning time point of the last photovoltaic module and the current time point;
and when the time interval is greater than or equal to a preset time interval, executing the step of acquiring the dust information of each photovoltaic unit to be cleaned.
Optionally, the step of obtaining the cleaning parameters of each photovoltaic unit to be cleaned according to the dust information further includes:
when the cleaning times of the photovoltaic units to be cleaned are more than or equal to two times, acquiring the number of fluid directors of each unit and photovoltaic module information, wherein the photovoltaic module information comprises at least one of the size of the photovoltaic module and the inclination angle of the photovoltaic module;
determining the water guide duration of each photovoltaic unit to be cleaned according to the number of the fluid directors and the photovoltaic module information;
the step of cleaning the corresponding photovoltaic module of the photovoltaic unit to be cleaned according to the cleaning parameters respectively comprises the following steps:
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
and when the cleaning stopping time reaches the water guide time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are finished.
Optionally, the step of determining the water guide duration of each photovoltaic unit to be cleaned according to the number of the flow deflectors and the photovoltaic module information includes:
determining a water guide time interval according to the number of the fluid directors;
and determining the water guide duration of each photovoltaic unit to be cleaned according to the photovoltaic module information.
Optionally, the step of cleaning the corresponding photovoltaic module of the photovoltaic unit to be cleaned according to the cleaning parameters respectively further includes:
acquiring the water inlet flow and the water outlet flow of a water tank in the photovoltaic module water spraying assembly;
when the water inlet flow is smaller than the water outlet flow, acquiring the water inlet flow and the current water tank water quantity;
determining a first time length required for reaching a preset water amount according to the water inlet flow and the current water amount of the water tank;
determining a target time length according to the first time length and the water guide time length;
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
and when the cleaning stopping time reaches the target time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are completed.
Optionally, after the step of cleaning the corresponding photovoltaic modules of the photovoltaic unit to be cleaned according to the cleaning parameters, the method further includes:
and when the photovoltaic unit to be cleaned is cleaned, outputting cleaning end prompt information.
In order to achieve the above object, an embodiment of the present application further provides a cleaning apparatus for a photovoltaic module, where the cleaning apparatus for a photovoltaic module includes a memory, a processor, and a photovoltaic module cleaning program stored in the memory and capable of running on the processor, and the processor implements the method as described above when executing the photovoltaic module cleaning program.
To achieve the above object, an embodiment of the present application further provides a computer-readable storage medium, on which a photovoltaic module cleaning program is stored, and the photovoltaic module cleaning program, when executed by a processor, implements the method as described above.
According to the cleaning method, the cleaning device and the medium for the photovoltaic module, provided by the embodiment of the invention, the cleaning device for the photovoltaic module obtains the dust information of each photovoltaic unit to be cleaned; acquiring cleaning parameters of each photovoltaic unit to be cleaned according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time; and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively. Therefore, the photovoltaic module can be accurately cleaned according to the actual condition of the photovoltaic module, and the sewage generated after the photovoltaic module is cleaned is guided away by the fluid director, so that the cleaning effect of the photovoltaic module is improved.
Drawings
Fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a cleaning method for a photovoltaic module according to the present invention;
FIG. 3 is a schematic flow chart of a cleaning method of a photovoltaic module according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart of a cleaning method for a photovoltaic module according to a third embodiment of the present invention;
FIG. 5 is a schematic flow chart of a cleaning method for a photovoltaic module according to a fourth embodiment of the present invention;
fig. 6 is a schematic view of a cleaning system for a photovoltaic module according to the present invention.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As an implementation, the cleaning device of the photovoltaic module may be as shown in fig. 1.
The embodiment of the invention relates to a cleaning device of a photovoltaic module, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, the memory 102, which is a kind of computer storage medium, may include therein a cleaning program of the photovoltaic module; and the processor 101 may be configured to call up a cleaning program for the photovoltaic module stored in the memory 102, and perform the following operations:
acquiring dust information of each photovoltaic unit to be cleaned;
acquiring cleaning parameters of each photovoltaic unit to be cleaned according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time;
and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively.
In an embodiment, the processor 101 may be configured to call a cleaning program of the photovoltaic module stored in the memory 102, and perform the following operations:
when the number of the photovoltaic units to be cleaned is at least two, acquiring the cleaning priority of each photovoltaic unit to be cleaned;
and respectively adopting the corresponding cleaning parameters to clean the photovoltaic units to be cleaned based on the sequence of the cleaning priority from high to low.
In an embodiment, the processor 101 may be configured to call a cleaning program of the photovoltaic module stored in the memory 102, and perform the following operations:
determining the dust accumulation grade of each photovoltaic unit to be cleaned according to the dust information;
and determining the cleaning priority of each photovoltaic unit to be cleaned according to the dust accumulation grade, wherein the photovoltaic unit to be cleaned with the high dust accumulation grade has higher priority than the photovoltaic unit to be cleaned with the low dust accumulation grade.
In an embodiment, the processor 101 may be configured to call a cleaning program of the photovoltaic module stored in the memory 102, and perform the following operations:
acquiring the time interval between the cleaning time point of the last photovoltaic module and the current time point;
and when the time interval is greater than or equal to a preset time interval, executing the step of acquiring the dust information of each photovoltaic unit to be cleaned.
In one embodiment, the processor 101 may be configured to invoke a cleaning program for the photovoltaic module stored in the memory 102 and perform the following operations:
when the cleaning times of the photovoltaic units to be cleaned are more than or equal to two times, acquiring the number of fluid directors of each unit and photovoltaic module information, wherein the photovoltaic module information comprises at least one of the size of the photovoltaic module and the inclination angle of the photovoltaic module;
determining the water guide duration of each photovoltaic unit to be cleaned according to the number of the fluid directors and the information of the photovoltaic modules;
the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively comprises the following steps:
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
and when the cleaning stopping time reaches the water guide time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are finished.
In one embodiment, the processor 101 may be configured to invoke a cleaning program for the photovoltaic module stored in the memory 102 and perform the following operations:
determining a water guide time interval according to the number of the fluid directors;
and determining the water guide duration of each photovoltaic unit to be cleaned according to the photovoltaic module information.
In one embodiment, the processor 101 may be configured to invoke a cleaning program for the photovoltaic module stored in the memory 102 and perform the following operations:
acquiring the water inlet flow and the water outlet flow of a water tank in the photovoltaic module water spraying assembly;
when the water inlet flow is smaller than the water outlet flow, acquiring the water inlet flow and the current water tank water quantity;
determining a first time length required for reaching a preset water amount according to the water inlet flow and the current water amount of the water tank;
determining a target time length according to the first time length and the water guide time length;
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
and when the cleaning stopping time reaches the target time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are finished.
In an embodiment, the processor 101 may be configured to call a cleaning program of the photovoltaic module stored in the memory 102, and perform the following operations:
and when the photovoltaic unit to be cleaned is cleaned, outputting cleaning end prompt information.
In the technical scheme provided by the embodiment, the cleaning device of the photovoltaic module acquires dust information of each photovoltaic unit to be cleaned; acquiring cleaning parameters of each photovoltaic unit to be cleaned according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time; and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters. Therefore, the photovoltaic module can be accurately cleaned according to the actual condition of the photovoltaic module, and the sewage after the photovoltaic module is cleaned is guided away through the fluid director, so that the cleaning effect of the photovoltaic module is improved.
Based on the hardware architecture of the cleaning device for the photovoltaic module, the embodiment of the cleaning method for the photovoltaic module is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a cleaning method of a photovoltaic module according to the present invention, the cleaning method of the photovoltaic module including the steps of:
s10, acquiring dust information of each photovoltaic unit to be cleaned;
the photovoltaic modules are provided with a fluid director, and at least one photovoltaic module forms a photovoltaic unit.
It should be noted that, in a photovoltaic power station system, especially a distributed power station on a color steel tile roof, dust has a great influence on the power generation capacity of the photovoltaic power station system. In general, except for natural precipitation and dust removal, the prior art adopts a rotary spray head and a spray head at the bottom of the component to clean surface dust of the photovoltaic component, however, once the installation angle of the bottom spray head deviates, the bottom dust deposition can be difficult to clean completely. Therefore, in the embodiment, the flow guider is arranged at the bottom of the photovoltaic module so as to guide the residual water and dust on the frame of the photovoltaic module to the outside of the photovoltaic module by utilizing the siphon principle.
In order to facilitate cleaning and management of the photovoltaic power plant, the photovoltaic power plant system is divided into at least one photovoltaic unit, each photovoltaic unit comprising at least one photovoltaic module. Referring to fig. 6, fig. 6 is a schematic view of a cleaning system for photovoltaic modules according to the present invention. The cleaning system of the photovoltaic power station comprises a water tank, a water inlet, a water pump, an electromagnetic valve nozzle and a fluid director. The water pump is arranged between the water tank and the spray head and used for pumping water in the water tank and cleaning the water in the photovoltaic module through the spray head, the electromagnetic valves are arranged at the water inlet and between the water pump and the spray head and used for controlling the opening and closing of the spray head, and the spray head is rotatably arranged in each photovoltaic unit; the fluid director is arranged at the bottom of the photovoltaic module and is used for draining sewage at the bottom of the photovoltaic module.
Each photovoltaic unit to be cleaned is provided with a dust detection device, and therefore the dust deposition degree of the photovoltaic module is judged by detecting the short-circuit current of the photovoltaic module, wherein the more the dust deposition is, the smaller the short-circuit current of the photovoltaic module is.
Optionally, acquiring a time interval between the last cleaning time point of the photovoltaic module and the current time point;
and when the time interval is greater than or equal to a preset time interval, executing the step of acquiring the dust information of each photovoltaic unit to be cleaned.
The preset time interval can be set according to actual conditions such as air quality and weather information of the environment where the photovoltaic power station is located. And when the current time is away from the last cleaning time interval by a preset time interval, acquiring dust information of each photovoltaic unit to be cleaned so as to judge whether cleaning is needed again.
S20, acquiring cleaning parameters of each photovoltaic unit to be cleaned according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time;
optionally, when the dust information of the photovoltaic unit to be cleaned exceeds a threshold value, determining that the photovoltaic unit to be cleaned needs to be cleaned; and determining cleaning parameters of each photovoltaic unit to be cleaned according to the dust information to be cleaned, wherein the cleaning parameters comprise cleaning time, cleaning times and water guide time. The cleaning time duration comprises the single cleaning time duration and the total cleaning time duration of each photovoltaic unit. The more the dust is accumulated, the longer the cleaning time is, and the more the cleaning times are. The single washing time period may be 0 to 3 minutes, the total washing time period may be 0 to 20 minutes, and the number of times of washing may be 0 to 10 times.
And S30, cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively.
It can be understood that a part of dust is lifted in the air by the rotary spray head in the process of washing the photovoltaic units, and the lifted dust falls down again after one unit is washed, so that the photovoltaic units cannot be washed at one time, and therefore, the photovoltaic units to be washed need to be washed in turn.
Optionally, in an embodiment, the electromagnetic valve of the photovoltaic unit N to be cleaned is opened first to clean the photovoltaic unit N to be cleaned for 3 minutes, then the cleaning is stopped, and the cleaning of the photovoltaic unit N +1 to be cleaned is started for 3 minutes, and so on until the last photovoltaic unit to be cleaned is cleaned, and then the photovoltaic unit N to be cleaned is returned to be cleaned again until the cleaning times are completed.
In one embodiment, the electromagnetic valve is controlled to clean the photovoltaic unit N to be cleaned for 3 minutes and then stop cleaning, the photovoltaic unit N +1 to be cleaned is cleaned for 3 minutes and then stop cleaning, and the photovoltaic unit N +2 to be cleaned is cleaned for 3 minutes and then stop cleaning; and then returning to clean the photovoltaic unit N to be cleaned until the cleaning times are finished, and cleaning the next unit or finishing. Where N may range from 0 to 20.
And further, when the photovoltaic unit to be cleaned is cleaned, outputting cleaning end prompt information.
Optionally, when the cleaning of the photovoltaic unit to be cleaned is finished, recording the cleaning time so as to judge the cleaning start time of the next time.
In the technical scheme provided by the embodiment, a cleaning device of a photovoltaic module acquires dust information of each photovoltaic unit to be cleaned; cleaning parameters of each photovoltaic unit to be cleaned are obtained according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time; and cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively. Therefore, the photovoltaic module can be accurately cleaned according to the actual condition of the photovoltaic module, and the sewage generated after the photovoltaic module is cleaned is guided away by the fluid director, so that the cleaning effect of the photovoltaic module is improved.
Referring to fig. 3, fig. 3 is a second embodiment of the cleaning method of the photovoltaic module according to the present invention, and based on the first embodiment, the step S30 includes:
s31, when the number of the photovoltaic units to be cleaned is at least two, acquiring the cleaning priority of each photovoltaic unit to be cleaned;
more dust accumulation leads to more power generation loss, and therefore, for photovoltaic units with more dust, preferential cleaning is required to rapidly reduce power loss.
Optionally, determining the dust accumulation grade of each photovoltaic unit to be cleaned according to the dust information;
and determining the cleaning priority of each photovoltaic unit to be cleaned according to the dust accumulation grade, wherein the photovoltaic unit to be cleaned with the high dust accumulation grade has higher priority than the photovoltaic unit to be cleaned with the low dust accumulation grade.
It can be understood that the more dust is deposited on the photovoltaic module, the smaller the short-circuit current detected by the dust detection device is, the higher the dust deposition level is, and the higher the cleaning priority of the photovoltaic unit to be cleaned is. That is, if the photovoltaic unit to be cleaned has the most dust, the photovoltaic unit to be cleaned is cleaned first.
And S32, respectively cleaning the photovoltaic modules of the photovoltaic units to be cleaned by adopting the corresponding cleaning parameters based on the sequence of the cleaning priorities from high to low.
Optionally, if there are at least two photovoltaic units to be cleaned with the same priority, the photovoltaic units to be cleaned with the same priority are cleaned at the same time.
In the technical scheme that this embodiment provided, confirm each according to the dust information that waits to wash the washing priority of photovoltaic unit, cause the power generation capacity loss serious with the dust more, wait to wash photovoltaic module priority urgently to can realize reducing the power generation loss fast, improve the power generation capacity.
Referring to fig. 4, fig. 4 is a third embodiment of the cleaning method of the photovoltaic module according to the present invention, and based on the first or second embodiment, the step S20 further includes:
s21, when the cleaning times of the photovoltaic units to be cleaned are more than or equal to two times, acquiring the number of fluid directors of each unit and photovoltaic module information, wherein the photovoltaic module information comprises at least one of the size of the photovoltaic module and the inclination angle of the photovoltaic module;
it should be noted that, in order to avoid that the sewage of the photovoltaic units to be cleaned in the previous cleaning is not guided away in time and is flushed to other units to cause secondary pollution when the photovoltaic units to be cleaned are cleaned again, the water guide time of each photovoltaic unit to be cleaned needs to be determined. Because the number of the fluid directors arranged on each photovoltaic module is different, the inclination angle and the length and width dimensions of the photovoltaic modules are different. The more the fluid directors are, the faster the flow guiding of the photovoltaic unit is, the shorter the required water guiding time is, the steeper the inclination angle of the photovoltaic module is, the faster the flow guiding speed is, the shorter the required water guiding time is, and the shorter the length of the inclined plane of the photovoltaic module is, the shorter the water guiding time is. Therefore, the diversion time of the fluid director is different in the process of cleaning each photovoltaic module, and different water diversion time needs to be set for different photovoltaic modules, so that the fluid director can divert dust and water in the photovoltaic modules.
S22, determining the water guide duration of each photovoltaic unit to be cleaned according to the number of the fluid directors and the information of the photovoltaic modules;
the water diversion time period may be 1.5 minutes.
Further, determining a water guide time interval according to the number of the fluid directors;
optionally, the water guiding duration interval may be divided into a plurality of intervals, different numbers of the fluid directors correspond to different water guiding duration intervals, and the greater the number of the fluid directors, the lower the highest water guiding duration in the water guiding duration interval.
And determining the water guide duration of each photovoltaic unit to be cleaned according to the photovoltaic module information.
Optionally, the photovoltaic module information includes at least one of a photovoltaic module size and a photovoltaic module tilt angle. And determining the water guide duration of each unit to be cleaned in the water guide duration interval according to the size of the photovoltaic assembly of each unit to be cleaned and/or the inclination angle of the photovoltaic assembly.
The step S30 further includes:
s33, acquiring the cleaning stopping time when the photovoltaic unit to be cleaned is cleaned once;
and S34, when the cleaning stopping time reaches the water guide time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are finished.
Optionally, after cleaning the photovoltaic unit N to be cleaned for 3 minutes, stopping cleaning for 1.5 minutes; and after the photovoltaic unit N to be cleaned is cleaned again for 3 minutes, stopping cleaning for 1.5 minutes until the next unit is cleaned or the cleaning is finished after the photovoltaic unit N to be cleaned is cleaned.
In the technical scheme provided by the embodiment, when the cleaning times of the photovoltaic unit to be cleaned are determined to be more than or equal to two times according to the dust information, the diversion time length is determined according to the information of the flow director number group component, so that after single cleaning is finished, the diversion time length is suspended and then the photovoltaic unit is cleaned again, the sewage of the photovoltaic unit can be cleaned again after the diversion time length is conducted, the pollution of the sewage which is not conducted to other units is avoided, and the cleaning effect of the photovoltaic unit is improved.
Referring to fig. 5, fig. 5 is a fourth embodiment of the method for cleaning a photovoltaic module according to the present invention, and based on the first, second or third embodiment, after step S33, the method further includes:
s35, acquiring the water inlet flow and the water outlet flow of a water tank in the photovoltaic module water spray assembly;
s36, when the water inflow is smaller than the water outflow, acquiring the water inflow and the current water tank water quantity;
step S37, determining a first time length required for reaching a preset water quantity according to the water inlet flow and the current water quantity of the water tank;
it can be understood that when the inflow of the water tank is smaller than the outflow, the water tank is not enough in the process of cleaning the photovoltaic module, so that the cleaning is suspended, on one hand, the water tank is waited for the inflow, and on the other hand, the flow guider can guide away the sewage on the photovoltaic module. Like this need reach to predetermine the water yield at the water tank water yield and just can begin to wash next time, consequently treat when wasing photovoltaic unit single washing end, need wait for the water tank and intake to certain water yield and the water guide can wash once more when accomplishing.
A water level detection device may be provided in the water tank for detecting the amount of water present in the water tank. The preset water amount can be a range value or a fixed value.
Optionally, after the photovoltaic unit to be cleaned is cleaned once, acquiring the current water quantity of the water tank; and when detecting that the water quantity of the current water tank is larger than the maximum value in a preset water quantity range, executing the step of returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic unit to be cleaned according to the cleaning parameters when the cleaning stopping time reaches the water guiding time, until the water quantity of the water tank is smaller than the minimum value in the preset water quantity range. When the fact that the water quantity of the current water tank is smaller than the minimum value in the preset water quantity range value is detected, the cleaning is suspended, and the first time length required for the water inlet flow and the current water tank water quantity to reach the maximum value in the preset water quantity is determined.
S38, determining a target time length according to the first time length and the water guide time length;
the target duration is used for waiting for water to enter the water tank on one hand and leading away the sewage on the photovoltaic module by the fluid director on the other hand. Optionally, the first duration and the target duration are compared, and a longer duration is selected as the target duration, so that the water quantity of the water tank is enough to perform next cleaning while water guiding is completed.
And S39, when the cleaning stopping time reaches the target time, returning to the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters until the cleaning times are finished.
Optionally, when the inflow water flow is greater than or equal to the outflow water flow, executing the step of returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic unit to be cleaned according to the cleaning parameters when the cleaning stopping time reaches the water guide time.
If the water inflow rate of the water tank is larger than or equal to the water outflow rate, the water amount in the water tank is always enough to be used for repeatedly cleaning each photovoltaic module to be cleaned, and therefore the photovoltaic modules do not need to be cleaned again after being stopped for a period of time after being cleaned once.
In the technical scheme that this embodiment provided, if the inflow of water tank is less than the play water flow of water tank, then need confirm the water tank water yield according to the current water yield of water tank and inflow when the water yield reaches and predetermines the required first time of water yield, and contrast during first time with during the water guide to select great time as the target time long in order to wash the pause, thereby make photovoltaic module's belt cleaning device can wash once more after the water tank water yield is sufficient and the water guide is accomplished, avoid the cleaning failure that the water tank water yield is not enough to lead to, improved the cleaning performance.
In order to achieve the above object, an embodiment of the present application further provides a cleaning apparatus for a photovoltaic module, where the cleaning apparatus for a photovoltaic module includes a memory, a processor, and a photovoltaic module cleaning program stored in the memory and capable of running on the processor, and the processor implements the method as described above when executing the photovoltaic module cleaning program.
To achieve the above object, an embodiment of the present application further provides a computer-readable storage medium, on which a photovoltaic module cleaning program is stored, and the photovoltaic module cleaning program, when executed by a processor, implements the method as described above.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A cleaning method of a photovoltaic module, wherein the photovoltaic module is provided with a flow guider, at least one photovoltaic module forms a photovoltaic unit, and the cleaning method of the photovoltaic module comprises the following steps:
acquiring dust information of each photovoltaic unit to be cleaned;
cleaning parameters of each photovoltaic unit to be cleaned are obtained according to the dust information, wherein the cleaning parameters comprise at least one of cleaning time, cleaning times and water guide time;
cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively;
the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively comprises the following steps:
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
acquiring the water inlet flow and the water outlet flow of a water tank in the photovoltaic module water spraying assembly;
when the water inlet flow is smaller than the water outlet flow, acquiring the water inlet flow and the current water tank water quantity;
determining a first time length required for reaching a preset water amount according to the water inlet flow and the current water amount of the water tank;
comparing the first duration with the water guide duration, and selecting a longer duration as a target duration;
and when the cleaning stopping time reaches the target time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are finished.
2. The method for cleaning the photovoltaic module according to claim 1, wherein the step of cleaning the corresponding photovoltaic module of the photovoltaic unit to be cleaned according to the cleaning parameters respectively comprises the steps of:
when the number of the photovoltaic units to be cleaned is at least two, acquiring the cleaning priority of each photovoltaic unit to be cleaned;
and respectively adopting the corresponding cleaning parameters to clean the photovoltaic components of the photovoltaic units to be cleaned based on the sequence of the cleaning priority from high to low.
3. The method for cleaning photovoltaic modules according to claim 2, wherein the step of obtaining the cleaning priority of each photovoltaic unit to be cleaned comprises:
determining the dust accumulation grade of each photovoltaic unit to be cleaned according to the dust information;
and determining the cleaning priority of each photovoltaic unit to be cleaned according to the dust accumulation grade, wherein the photovoltaic unit to be cleaned with the high dust accumulation grade has higher priority than the photovoltaic unit to be cleaned with the low dust accumulation grade.
4. The method of cleaning a photovoltaic module according to claim 1, further comprising:
acquiring the time interval between the cleaning time point of the last photovoltaic module and the current time point;
and when the time interval is greater than or equal to a preset time interval, executing the step of acquiring the dust information of each photovoltaic unit to be cleaned.
5. The method for cleaning photovoltaic modules according to claim 1, wherein the step of obtaining the cleaning parameters of each photovoltaic unit to be cleaned according to the dust information further comprises:
when the cleaning times of the photovoltaic units to be cleaned are more than or equal to two times, acquiring the number of fluid directors of each unit and photovoltaic module information, wherein the photovoltaic module information comprises at least one of the size of the photovoltaic module and the inclination angle of the photovoltaic module;
determining the water guide duration of each photovoltaic unit to be cleaned according to the number of the fluid directors and the information of the photovoltaic modules;
the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively comprises the following steps:
when the photovoltaic unit to be cleaned is cleaned once, acquiring the cleaning stopping time;
and when the cleaning stopping time reaches the water guide time, returning to execute the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters respectively until the cleaning times are completed.
6. The method for cleaning the photovoltaic module according to claim 5, wherein the step of determining the water guide time length of each photovoltaic unit to be cleaned according to the number of the flow deflectors and the photovoltaic module information comprises the following steps:
determining a water guide time interval according to the number of the fluid directors;
and determining the water guide duration of each photovoltaic unit to be cleaned according to the photovoltaic module information.
7. The method for cleaning photovoltaic modules according to claim 1, wherein after the step of cleaning the corresponding photovoltaic modules of the photovoltaic units to be cleaned according to the cleaning parameters, the method further comprises:
and when the photovoltaic unit to be cleaned is cleaned, outputting cleaning end prompt information.
8. A photovoltaic module cleaning apparatus, comprising a memory, a processor, and a photovoltaic module cleaning program stored in the memory and executable on the processor, wherein the processor implements the method of any one of claims 1-7 when executing the photovoltaic module cleaning program.
9. A computer-readable storage medium, having stored thereon a photovoltaic module cleaning program, which when executed by a processor, implements the method of any one of claims 1-7.
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