CN108566155B - Photovoltaic power generation system, and control method and device of photovoltaic power generation system - Google Patents
Photovoltaic power generation system, and control method and device of photovoltaic power generation system Download PDFInfo
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- CN108566155B CN108566155B CN201810674640.9A CN201810674640A CN108566155B CN 108566155 B CN108566155 B CN 108566155B CN 201810674640 A CN201810674640 A CN 201810674640A CN 108566155 B CN108566155 B CN 108566155B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004140 cleaning Methods 0.000 claims abstract description 304
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- 238000004590 computer program Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011086 high cleaning Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 19
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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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Abstract
The invention relates to a photovoltaic power generation system, a control method and a control device of the photovoltaic power generation system, wherein the photovoltaic power generation system comprises: the photovoltaic module comprises a plurality of photovoltaic module strings, cleaning equipment and guide rails; the photovoltaic group string is used for connecting an inverter or a combiner box; the guide rail sets up between adjacent photovoltaic group cluster, and cleaning equipment is used for moving to target photovoltaic group cluster position and wasing target photovoltaic group cluster along the guide rail at the generated energy of photovoltaic group cluster is less than reference generated energy. The photovoltaic power generation system provided by the embodiment of the invention can automatically clean dirt on the surface of the photovoltaic component, does not need to disconnect the photovoltaic component and the inverter or the header box in the cleaning process, can accurately clean each photovoltaic component string, has high cleaning efficiency and good cleaning effect, and greatly improves the power generation capacity of the photovoltaic power generation system.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation system, and a control method and device of the photovoltaic power generation system.
Background
With the rapid development of photovoltaic technology, photovoltaic power generation systems are widely popularized in various countries around the world, and the systems tend to mature from small-sized photovoltaic power generation systems which are mainly self-supplied and self-sufficient for families to grid-connected photovoltaic power generation systems which are connected with a power supply network and transmit power to the power grid. In the routine maintenance of a photovoltaic power generation system, the cleaning of a photovoltaic panel is an important link, and because the photovoltaic module is heated unevenly and hot spots appear when the cleaning condition of the photovoltaic panel is unsatisfactory, the photovoltaic module is damaged to reduce the generated energy. The washing of photovoltaic power generation system mainly adopts artifical cleanness as the main now, regularly washes or adopts instruments such as mop to wash photovoltaic board surface by the staff to the high-pressure squirt, maintains the cleanness on photovoltaic board surface.
In the implementation process, the inventor finds that the cleaning work of the traditional photovoltaic power generation system component has at least the following disadvantages: adopt artifical regular cleaning's mode among the conventional art, need break off the switch of dc-to-ac converter or collection flow box during the washing, influence the generated energy of power station during the washing, and artifical cleaning efficiency is low, and is consuming time long, and clean dynamics differs, causes photovoltaic module subfissure easily to cause the generated energy to be low, to sum up, traditional photovoltaic power generation system has the problem that the generated energy is low.
Disclosure of Invention
In view of the above, it is necessary to provide a photovoltaic power generation system, a method and an apparatus for controlling the photovoltaic power generation system, in order to solve the problem of low power generation amount.
In one aspect, an embodiment of the present invention provides a photovoltaic power generation system, including: the photovoltaic module comprises a plurality of photovoltaic module strings, cleaning equipment and guide rails;
the photovoltaic group string is used for connecting an inverter or a combiner box;
the guide rails are arranged between the adjacent photovoltaic group strings;
the cleaning equipment is used for moving to the position of the target photovoltaic group string along the guide rail when the generated energy of the photovoltaic group string is lower than the reference generated energy and cleaning the target photovoltaic group string.
In one embodiment, two photovoltaic strings which are longitudinally adjacently arranged form a photovoltaic string unit; the guide rails comprise transverse guide rails and longitudinal guide rails;
a transverse guide rail is arranged at the connection position of the two photovoltaic strings of the photovoltaic string unit;
longitudinal guide rails are arranged at the joints of the photovoltaic string units which are transversely arranged adjacently;
the transverse and longitudinal rails communicate with each other at the intersection.
In one embodiment, the photovoltaic power generation system further comprises an automatic water replenishing device; the cleaning equipment comprises a water storage tank;
the cleaning equipment moves to a water supplementing position in front of the automatic water supplementing device when the water storage tank is lack of water;
when the automatic water replenishing device detects that the cleaning equipment reaches the water replenishing position, water is replenished to the water storage tank.
In one embodiment, a cleaning apparatus includes: the cleaning device comprises a cleaning device body, a controller, a cleaning arm, a cleaning head and a movable pulley;
the controller, the cleaning arm and the movable pulley are integrated on the body of the cleaning equipment;
one end of the cleaning arm is connected with the body of the cleaning equipment, and the other end of the cleaning arm is connected with the cleaning head;
the movable pulley is connected with the guide rail in a matching way;
the controller is used for controlling the movable pulley to move on the guide rail to drive the body of the cleaning equipment to the position of the target photovoltaic string and cleaning the target photovoltaic string by the cleaning head on the control cleaning arm when the generated energy of the photovoltaic string is lower than the reference generated energy.
In one embodiment, the cleaning apparatus further comprises an atomizing steam device; a mist outlet of the atomized steam device is communicated with a cleaning head arranged on the cleaning arm;
the controller is used for:
controlling the water storage tank to supply water to the atomized steam device;
controlling an atomized steam device to spray the generated atomized steam with pressure on the surface of the target photovoltaic string through a cleaning head;
and controlling the cleaning head to clean the dirt left on the surface of the target photovoltaic string sprayed by the atomized steam.
In one embodiment, the cleaning apparatus further comprises a distance sensor and a pressure sensor;
the distance sensor is arranged on the cleaning arm and used for detecting a distance parameter between the cleaning arm and the surface of the target photovoltaic string and feeding back the distance parameter to the controller;
the pressure sensor is arranged on the atomized steam device and used for detecting the air pressure parameter of the atomized steam and feeding the air pressure parameter back to the controller;
the controller is used for controlling the distance between the cleaning arm and the surface of the target photovoltaic group string according to the distance parameter and the air pressure parameter, and controlling the air pressure of the atomized steam generated by the atomized steam device.
In one embodiment, the photovoltaic power generation system further comprises a monitoring device, wherein the monitoring device is electrically connected with each photovoltaic group string through an inverter or a combiner box; the monitoring device is in communication connection with the cleaning equipment;
the monitoring device is used for acquiring the generated energy parameters of each photovoltaic group string and sending the generated energy parameters to the cleaning equipment.
A control method of a photovoltaic power generation system, comprising:
acquiring power generation parameters of each photovoltaic group string, wherein the power generation parameters comprise power generation;
and when the power generation amount of the photovoltaic group string is detected to be lower than the reference power generation amount, controlling the cleaning equipment to move to the position of the target photovoltaic group string along the guide rail and controlling the cleaning equipment to clean the target photovoltaic group string.
A control device of a photovoltaic power generation system, comprising:
the generating capacity parameter acquiring module is used for acquiring generating capacity parameters of each photovoltaic group string, wherein the generating capacity parameters comprise generating capacity;
and the cleaning control module is used for controlling the cleaning equipment to move to the position of the target photovoltaic string along the guide rail and controlling the cleaning equipment to clean the target photovoltaic string when the generated energy of the photovoltaic string is detected to be lower than the reference generated energy.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method steps when executing the program.
One or more embodiments provided by the invention have at least the following beneficial effects: the embodiment of the invention provides a photovoltaic power generation system, which comprises: the photovoltaic string cleaning device comprises a plurality of photovoltaic string, cleaning equipment and a guide rail, wherein the photovoltaic string is used for connecting an inverter or a combiner box, the guide rail is arranged between adjacent photovoltaic strings, then the generated energy of the photovoltaic string is detected, when the generated energy is abnormal, the situation that the generated energy is too low due to the surface pollution problem of the photovoltaic string is considered to be possible, the cleaning equipment moves to the position of a target photovoltaic string along the guide rail and cleans the target photovoltaic string, by adopting the photovoltaic power generation system, the automatic cleaning of the dirt on the surface of the photovoltaic component can be realized, the connection between the photovoltaic component and the inverter or the combiner box is not required to be disconnected in the cleaning process, the accurate cleaning of each photovoltaic component can be realized, the cleaning efficiency is high, the cleaning effect is good, and the generated energy of the photovoltaic power generation system is greatly.
Drawings
FIG. 1 is a schematic diagram of a photovoltaic power generation system according to an embodiment;
FIG. 2 is a schematic structural diagram of a photovoltaic power generation system in another embodiment;
FIG. 3 is a schematic structural view of a cleaning apparatus in one embodiment;
FIG. 4 is a schematic diagram of the structure of the wash arm in one embodiment;
FIG. 5 is a schematic cross-sectional view of another embodiment of a wash arm;
FIG. 6 is a schematic flow chart of a control method of the photovoltaic power generation system according to one embodiment;
fig. 7 is a schematic flow chart of a control method of a photovoltaic power generation system in another embodiment;
fig. 8 is a schematic structural diagram of a control device of the photovoltaic power generation system in one embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An embodiment of the present invention provides a photovoltaic power generation system, as shown in fig. 1, including: the photovoltaic module comprises a plurality of photovoltaic module strings 1, cleaning equipment 2 and guide rails 3; the photovoltaic group string 1 is used for connecting an inverter or a combiner box; the guide rails 3 are arranged between the adjacent photovoltaic string 1; the cleaning equipment 2 is used for moving to the position of the target photovoltaic string 1 along the guide rail 3 when the power generation amount of the photovoltaic string 1 is lower than the reference power generation amount and cleaning the target photovoltaic string 1.
The photovoltaic group string 1 refers to a photovoltaic power generation unit formed by connecting photovoltaic modules. For example, a string of pv strings 1 may be made up of 22 or 24 pv modules. The inverter or combiner box is here a device for converting the voltage or collecting the current of the photovoltaic string. The reference power generation amount refers to the minimum power generation amount in the power generation amount interval range of the normal irradiation value of the photovoltaic string 1 under the current natural light condition. The target photovoltaic string 1 refers to the photovoltaic string 1 which needs to be cleaned by the cleaning equipment 2.
Specifically, a plurality of photovoltaic string 1 formed by connecting photovoltaic modules in series are adjacently arranged to form a photovoltaic power generation unit, which is used for converting light energy into electric energy, a guide rail 3 is arranged between two adjacent photovoltaic string 1, for example, the guide rail 3 can be arranged between every two adjacent photovoltaic string 1, a transverse guide rail 31 and the like can also be arranged according to every two adjacent photovoltaic string 1, the guide rail 3 is used for providing a moving condition for cleaning equipment, when the generated energy of a certain photovoltaic string 1 is lower than the reference generated energy, dirt possibly exists on the surface of the certain photovoltaic string 1, and the certain photovoltaic string needs to be cleaned, at this time, the cleaning equipment 2 goes to the position of the target photovoltaic string 1 needing to be cleaned along the guide rail 3, and when the position of the target photovoltaic string 1 is reached, the cleaning equipment 2 cleans the surface of the target photovoltaic string 1. Alternatively, the photovoltaic string 1 may be incorporated into the power supply network after passing through the combiner box and the inverter in sequence. The output end of each photovoltaic group string 1 is connected with the input end of the combiner box, the output end of the combiner box is connected with the input end of the inverter, and the output end of the inverter is connected with the power supply network.
According to the photovoltaic power generation system provided by the embodiment of the invention, through the detection of the power generation amount of the photovoltaic string 1, when the abnormal power generation amount is detected, the power generation amount is considered to be too low possibly due to the dust problem on the surface of the photovoltaic string 1, the cleaning equipment 2 moves to the position of the target photovoltaic string 1 on the guide rail 3 and cleans the target photovoltaic string 1, the automatic cleaning of the dirt on the surface of the photovoltaic component can be realized, the connection between the photovoltaic component and the inverter or the combiner box is not required to be disconnected in the cleaning process, the cleaning efficiency is high, and the power generation amount of the photovoltaic power generation system is greatly improved. And because the guide rail 3 is arranged between the adjacent photovoltaic group strings 1, the cleaning equipment can move to the position of any one photovoltaic group string 1 on the guide rail 3, and the photovoltaic array formed by the photovoltaic group strings 1 which are not on the same plane can be accurately cleaned, so that the defect that the photovoltaic group strings 1 on the same plane can only be cleaned in the traditional technology is overcome.
In one embodiment, as shown in fig. 2, two photovoltaic strings 1 arranged longitudinally adjacent to each other form a photovoltaic string unit 6; the guide rail 3 includes a lateral guide rail 31 and a longitudinal guide rail 32; a transverse guide rail 31 is arranged at the joint of the two photovoltaic strings 1 of the photovoltaic string unit 6; longitudinal guide rails 32 are arranged at the joints of the photovoltaic string units 6 which are transversely adjacently arranged; the cross rails 31 and the longitudinal rails 32 communicate with each other at intersections.
The longitudinal direction and the transverse direction refer to an orientation concept in which one bottom edge of the photovoltaic string unit 6 composed of the photovoltaic string 1 is a reference edge. Specifically, the guide rail 3 comprises a transverse guide rail 31 and a longitudinal guide rail 32, the transverse guide rail 31 is longitudinally communicated with the longitudinal guide rail 32, when a certain photovoltaic string 1 needs to be cleaned, the cleaning device 2 determines the position of the target photovoltaic string 1, then the cleaning device 2 reaches the position of the target photovoltaic string 1 on the guide rail 3 along the guide rail 3, and dirt on the surface of the photovoltaic string 1 is automatically cleaned. According to the photovoltaic power generation system provided by the embodiment, as for the photovoltaic group strings 1 arranged in a matrix shape, the guide rails 3 are arranged between the photovoltaic group strings 1 adjacent in the longitudinal direction and the transverse direction, and the guide rails 3 are communicated with each other, so that the cleaning equipment 2 can reach the position where any one photovoltaic group string 1 is located along the guide rails 3 to clean the photovoltaic group string 1. And only one transverse guide rail 31 is arranged between two longitudinally arranged photovoltaic strings 1 in each longitudinally arranged photovoltaic string unit 6, two photovoltaic strings 1 in the photovoltaic string units 6 can share one transverse guide rail 31, and the cleaning equipment 2 can clean the two photovoltaic strings 1 in the units on the transverse guide rail 31, so that the laying materials of the guide rails 3 are saved.
In one embodiment, as shown in fig. 2, the pv string units 6 are arranged in an array, and the transverse rail 31 is further disposed between two pv strings of adjacent, longitudinally arranged pv string units 6.
The longitudinal direction and the transverse direction refer to an orientation concept in which one bottom edge of the photovoltaic string unit 6 composed of the photovoltaic string 1 is a reference edge. Specifically, the guide rail 3 comprises a transverse guide rail 31 and a longitudinal guide rail 32, the transverse guide rail 31 is longitudinally communicated with the longitudinal guide rail 32, when a certain photovoltaic string 1 needs to be cleaned, the cleaning device 2 determines the position of the target photovoltaic string 1, then the cleaning device 2 reaches the position of the target photovoltaic string 1 on the guide rail 3 along the guide rail 3, and dirt on the surface of the photovoltaic string 1 is automatically cleaned. According to the photovoltaic power generation system provided by the embodiment, for the photovoltaic group strings 1 arranged in a matrix shape, the guide rails 3 are arranged between the longitudinal and transverse adjacent photovoltaic group strings 1, and the guide rails 3 are communicated with each other, so that the cleaning equipment 2 can reach the position of any one photovoltaic group string 1 along the guide rails 3 to clean the photovoltaic group string 1. Set up transverse guide 31 between two photovoltaic group string units 6 of vertical arrangement, can provide more washing routes for cleaning equipment 2, cleaning equipment 2 can be as required, selects the shortest route to wash work, shortens the cleaning cycle, improves cleaning efficiency.
In one embodiment, as shown in fig. 2 and 3, the photovoltaic power generation system further includes an automatic water replenishing device 4; the cleaning apparatus 2 includes a water storage tank 21; the cleaning equipment 2 moves to a water supplementing position in front of the automatic water supplementing device 4 when the water storage tank 21 is lack of water; when the automatic water replenishing device 4 detects that the cleaning apparatus 2 reaches the water replenishing position, the water is replenished to the water storage tank 21.
The water replenishing position refers to a position where the automatic water replenishing device 4 replenishes water for the cleaning equipment 2. Specifically, when storage water tank 21 lacks water, cleaning equipment 2 moves to the moisturizing position, waits for automatic water supply device 4 to carry out the moisturizing to storage water tank 21, and when automatic water supply device 4 detected that cleaning equipment 2 reachs the moisturizing position, automatic water supply device 4 carried out the moisturizing to cleaning equipment 2. Optionally, the automatic water replenishing device 4 may be disposed at an outer edge of the photovoltaic string 1, and is close to an edge of the guide rail 3 of one of the photovoltaic strings 1, so that the cleaning apparatus 2 may be moved to a water replenishing position on the guide rail 3 before the automatic water replenishing device 4 to perform automatic water replenishing.
In one embodiment, the automatic water replenishing device 4 comprises a control unit and an execution unit, and the water replenishing position is provided with a water replenishing sensor which is in communication connection with the control unit and is used for sending an arrival signal to the control unit when the cleaning equipment 2 arrives at the water replenishing position.
The water replenishing sensor can be a contact sensor and the like, the contact sensor and the like are in communication connection with the control unit, when the cleaning device 2 reaches the water replenishing position, the contact sensor and the like send an arrival signal to the control unit, and the control unit controls the execution unit to replenish water to the water storage tank 21 according to the arrival signal. The execution unit can be a switch such as an electronic valve, the electronic valve is arranged at the position of the water outlet 41 of the automatic water replenishing device 4, when the control unit receives the arrival signal, the control unit controls the electronic valve to be opened, and the water source flows into the cleaning equipment 2 from the water outlet 41. Optionally, a water inlet 212 communicated with the outside is arranged on the water storage tank 21 of the cleaning device 2, and the water inlet 212 is matched with the water outlet 41 of the automatic water replenishing device 4. When the cleaning device 2 moves to the water replenishing position, the water inlet 212 of the water storage tank 21 is in matched butt joint with the water outlet 41 of the automatic water replenishing device 4.
In one embodiment, the automatic water replenishing device 4 includes a control unit, an execution unit, and a water replenishing sensor communicatively connected to the control unit for sending an arrival signal to the control unit when the cleaning apparatus 2 arrives at the water replenishing position.
The water replenishing sensor can be a radio frequency sensor, a distance measurer and the like, the radio frequency sensor, the distance measurer and the like are in communication connection with the control unit, when the cleaning equipment 2 reaches the water replenishing position, the radio frequency sensor, the distance measurer and the like send arrival signals to the control unit, and the control unit controls the execution unit to replenish water to the water storage tank 21 according to the arrival signals. The execution unit can be a switch such as an electronic valve, the electronic valve is arranged at the position of the water outlet 41 of the automatic water replenishing device 4, when the control unit receives the arrival signal, the control unit controls the electronic valve to be opened, and the water source flows into the cleaning equipment 2 from the water outlet 41. Optionally, a water inlet 212 communicated with the outside is arranged on the water storage tank 21 of the cleaning device 2, and the water inlet 212 is matched with the water outlet 41 of the automatic water replenishing device 4. When the cleaning device 2 moves to the water replenishing position, the water inlet 212 of the water storage tank 21 is in matched butt joint with the water outlet 41 of the automatic water replenishing device 4.
In one embodiment, as shown in fig. 2 and 3, the cleaning apparatus 2 includes: a body 22 of the cleaning apparatus, a controller 23, a cleaning arm 24, a cleaning head 25, and a moving pulley 26; the controller 23, the wash arm 24 and the moving pulley 26 are all integrated on the body 22 of the washing apparatus; one end of the cleaning arm 24 is connected with the body 22 of the cleaning device, and the other end is connected with the cleaning head 25; the movable pulley 26 is connected with the guide rail 3 in a matching way; the controller 23 is used for controlling the movable pulley 26 to move on the guide rail 3 to drive the body 22 of the cleaning equipment to the position of the target photovoltaic string 1 and cleaning the target photovoltaic string 1 by the cleaning head 25 on the control cleaning arm 24 when the power generation amount of the photovoltaic string 1 is lower than the reference power generation amount.
The main body 22 of the cleaning apparatus is a carrier that can integrate other important components of the cleaning apparatus 2, for example, the main body may be a carrier in the form of a base or a pedestal, or may be a hollow housing. Specifically, when the power generation amount of a certain photovoltaic string 1 is lower than the reference power generation amount, the controller 23 drives the movable pulley 26 to move on the guide rail 3 so as to drive the body 22 of the cleaning device to move to the position of the target photovoltaic string 1, and controls the cleaning head 25 on the cleaning arm 24 to clean the surface of the target photovoltaic string 1, so that the automatic cleaning of the dirt on the surface of the photovoltaic string 1 is realized, and the power generation amount is improved.
In one embodiment, the cleaning apparatus 2 further comprises a first driver and a controller 23, the controller 23 being electrically connected to the first driver; the first driver is mechanically connected with the moving wheel. Specifically, when the generated energy of a certain photovoltaic group cluster 1 is less than the reference generated energy, the controller 23 sends pulse drive to the first driver to work, thereby driving the movable pulley 26 to advance, the movable pulley 26 drives the body 22 of the cleaning equipment to move to the position of the target photovoltaic group cluster 1, the cleaning equipment 2 can clean the target photovoltaic group cluster 1 from the position of the target photovoltaic group cluster 1, thereby realizing that the quick cleaning really needs the cleaned photovoltaic group cluster 1, on the one hand, the automatic cleaning mode is adopted to improve the cleaning efficiency, on the other hand, only the target photovoltaic group cluster 1 needs to be cleaned, the cleaning tool is pointed, the cleaning effect can be ensured, and a large amount of cleaning agents or water and other raw materials are saved.
In one embodiment, the wash actuator comprises: a second drive, wash arm 24 and wash head 25; the controller 23 and the wash arm 24 are both integrated on the body 22 of the washing apparatus; one end of the cleaning arm 24 is mechanically connected to the body 22 of the cleaning device, and the other end is mechanically connected to the cleaning head 25; the controller 23 is electrically connected with the input end of the second driver, and the output end of the second driver is mechanically connected with the cleaning arm 24; the cleaning arm 24 is mechanically connected to a cleaning head 25.
Specifically, when the target photovoltaic group string 1 needs to be cleaned, the controller 23 controls the second driver to work, and the rotor of the second driver rotates, so that the cleaning arm 24 mechanically connected with the second driver is driven to move, the relative position relation between the cleaning arm 24 and the photovoltaic group string 1 is adjusted, and it is ensured that the cleaning head 25 on the cleaning arm 24 can clean any position on the photovoltaic group string 1.
In one embodiment, as shown in fig. 2 and 3, the photovoltaic string 1 is arranged in an array, the guide rail 3 includes a transverse guide rail 31 and a longitudinal guide rail 32, and the transverse guide rail 31 is located at the connection position of the longitudinally adjacent photovoltaic strings 1; the longitudinal guide rails 32 are positioned at the joints of the transversely adjacent photovoltaic string strings 1; the cross rails 31 and the longitudinal rails 32 communicate with each other at intersections.
The longitudinal direction and the transverse direction refer to the position of one bottom edge of the power generation units of the photovoltaic group string 1 arranged in an array as a reference edge. Specifically, the guide rail 3 comprises a transverse guide rail 31 and a longitudinal guide rail 32, the transverse guide rail 31 is longitudinally communicated with the longitudinal guide rail 32, when the power generation amount of a certain photovoltaic group string 1 is lower than the reference power generation amount, the cleaning equipment 2 determines the position of the target photovoltaic group string 1, an optimal path is planned, then the cleaning equipment 2 reaches the position of the target photovoltaic group string 1 on the guide rail 3 along the optimal path, and the dirt on the surface of the photovoltaic group string 1 is automatically cleaned, so that the power generation amount is improved.
In one embodiment, as shown in fig. 2 and 3, the cleaning device 2 further comprises an atomizing steam device 27; the mist outlet 271 of the atomizing steam device 27 is correspondingly communicated with the through hole 241 arranged on the cleaning arm 24; the controller 23 is configured to: controlling the water storage tank 21 to supply water to the atomized steam device 27; controlling the atomized steam device 27 to spray the generated atomized steam with pressure on the surface of the target photovoltaic string 1 through the through hole 241; and controlling the cleaning head 25 to clean the dirt left on the surface of the target photovoltaic string 1 sprayed by the atomized steam.
Wherein, the atomized steam device 27 is used for providing atomized steam, and the atomized steam is used for cleaning dirt on the surface of the photovoltaic string 1. The pressurized atomized steam is atomized steam with certain air pressure, so that the atomized steam has certain speed when being sprayed to the through hole 241 from the fog outlet 271, and can be sprayed on the surface of the photovoltaic group string 1 through the through hole 241 and with certain impact force, and dirt on the surface of the photovoltaic group string 1 can be washed conveniently. Specifically, when the cleaning device 2 reaches the position of the target photovoltaic string 1, the controller 23 of the cleaning device 2 controls the water storage tank 21 to supply water to the atomized steam device 27, then the controller 23 controls the atomized steam device 27 to work, the atomized steam device 27 generates atomized steam, the atomized steam is sprayed into the through hole 241 communicated with the fog outlet 271 from the fog outlet 271, and is sprayed on the surface of the target photovoltaic string 1 along the through hole 241 on the cleaning arm 24, so as to wash the dirt on the surface of the target photovoltaic string 1, and after the dirt on the surface is washed, the controller 23 controls the cleaning head 25 to clean the dirt left on the surface of the target photovoltaic string 1 sprayed by the atomized steam, so as to ensure the cleaning effect. Alternatively, the cleaning head 25 may comprise a cleaning swab, and the control 23 is adapted to: controlling the water storage tank 21 to supply water to the atomized steam device 27; controlling the atomized steam device 27 to spray the generated atomized steam with pressure on the surface of the target photovoltaic string 1 through the through hole 241; the cleaning arm 24 is controlled to move so as to drive the cleaning wool mop on the cleaning head 25 to clean the water left on the surface of the target photovoltaic string 1 sprayed by the atomized steam. The cleaning wool mop is soft in material and not easy to scratch the surface of the photovoltaic string 1.
In one embodiment, as shown in fig. 4, the through holes 241 are plural, the through holes 241 are provided at intervals on the outer surface of the cleaning arm 24, and the cleaning head 25 includes a cleaning cloth provided in parallel with a line formed by the through holes 241.
Specifically, set up a plurality of through-holes 241 that communicate with mist steam device 27 on wash arm 24, when mist steam device 27 produced mist steam, mist steam can spray on photovoltaic group cluster 1 surface through each through-hole that the interval set up on wash arm 24, go out fog at every turn, can be with the form of line sweeping, wash photovoltaic group cluster 1 surface, greatly increased cleaning efficiency, and cleaning head 25 includes the parallel washing cloth of line of constituteing with each through-hole 241, at wash arm 24 removal in-process, long banding washing cloth can once only accomplish the secondary washing to the place that mist steam water washed. Optionally, the included angle between the fog-out direction of the through hole 241 and the plane where the surface of the photovoltaic string 1 is located is an acute angle, and in this arrangement, when the photovoltaic string 1 is cleaned, atomized steam sprayed from the through hole 241 can be sprayed onto the photovoltaic string 1 at a certain angle, so that damage to the surface material of the photovoltaic string 1 caused by the atomized steam vertically sprayed onto the photovoltaic string 1 can be avoided.
In one embodiment, as shown in fig. 5, the through hole 241 includes an elongated cleaning slit 242, the cleaning slit 242 is provided on the cleaning arm 24 and communicates with the outside, and the cleaning head 25 includes an elongated cleaning cloth arranged in parallel with the cleaning slit 242.
Specifically, through-hole 241 includes cleaning slot 242, cleaning slot 242 is rectangular form setting on the cleaning arm, cleaning slot 242 and external intercommunication, when mist steam device 27 produced mist steam, mist steam sprayed a rectangular form washing spray along cleaning slot 242 through-hole 241, along with the removal of cleaning arm 24, can realize the washing to photovoltaic group cluster 1, and with the washing cloth that cleans slot 242 parallel arrangement, along with the removal of cleaning arm 24, can accomplish the washing of the incrustation scale that the place left over was washd to the mist steam that cleaning slot 242 sprayed. Optionally, the fog direction of the cleaning slot 242 is towards the direction far away from the cleaning cloth, when cleaning the photovoltaic array string 1, the controller 23 controls the cleaning arm to sweep over the photovoltaic array string 1, the atomized steam sprayed from the cleaning slot 242 sprays the surface of the photovoltaic array string 1, and the cleaning arm 24 sweeps the process, so that the cleaning cloth on the cleaning arm 24 can clean the place where the atomized steam has been sprayed. The mist outlet direction of the cleaning slits 242 is set in a direction away from the cleaning cloth, so that the waste of raw materials such as cleaning agents and the like caused by the spraying of the atomized steam along the cleaning slits 242 on the cleaning cloth in the sweeping process of the cleaning arm 24 can be avoided.
In one of the embodiments, the cleaning device 2 further comprises a distance sensor and a pressure sensor; the distance sensor is arranged on the cleaning arm 24 and used for detecting a distance parameter between the cleaning arm 24 and the surface of the target photovoltaic group string 1 and feeding back the distance parameter to the controller 23; the pressure sensor is arranged on the atomized steam device 27 and used for detecting the air pressure parameter of the atomized steam and feeding the air pressure parameter back to the controller 23; the controller 23 is used for controlling the distance between the cleaning arm 24 and the surface of the target photovoltaic string 1 according to the distance parameter and the air pressure parameter, and controlling the air pressure of the atomized steam generated by the atomized steam device 27.
Specifically, when the cleaning device 2 moves to the position of the target photovoltaic group string 1, the pressure sensor measures the pressure parameter of the atomized steam generated by the atomized steam device 27, the larger the pressure is, the larger the impact force of the atomized steam sprayed on the surface of the target photovoltaic group string 1 is, then, the distance sensor measures the distance parameter between the cleaning arm 24 and the surface of the target photovoltaic group string 1 and sends the distance parameter to the controller 23, and the controller 23 comprehensively adjusts the distance between the cleaning arm 24 and the surface of the target photovoltaic group string 1 and the pressure of the atomized steam device 27 according to the distance parameter and the pressure parameter, so that the atomized steam sprayed from the through hole 241 on the cleaning arm 24 washes the dirt on the surface of the target photovoltaic group string 1 with proper strength, the damage to the surface of the target photovoltaic group string 1 due to excessive impact force is avoided, and the generated energy is ensured. Alternatively, the pressure sensor may be disposed at the mist outlet 271, or may be disposed at a position where the mist outlet 271 communicates with the through hole 241.
In one embodiment, the distance sensor may be provided in a plurality of different positions on the cleaning arm 24. The controller 23 can obtain the distance relation and the angle relation between the cleaning arm 24 and the surface of the target photovoltaic string 1 according to the setting position of the distance sensor and the distance parameter. The controller 23 can control the distance between the cleaning arm 24 and the surface of the target photovoltaic string 1 and the included angle between the mist outlet direction of the through hole 241 on the cleaning arm 24 and the surface of the target photovoltaic string 1 according to the distance and the angle relationship between the cleaning arm 24 and the surface of the target photovoltaic string 1, so as to control the surface washing angle of the target photovoltaic string 1.
In one of the embodiments, the washing apparatus 2 further comprises a water storage tank 21 and an atomizing steam device 27; the mist outlet 271 of the atomizing steam device 27 is correspondingly communicated with the through hole 241 arranged on the cleaning arm 24; a water pump 211 is arranged in the water storage tank 21; the water pump 211 is used for supplying the water in the water storage tank 21 to the atomized steam device 27; the controller 23 is electrically connected to the water pump 211 and the mist steam unit 27, respectively.
Wherein, the atomized steam device 27 is used for providing atomized steam, and the atomized steam is used for cleaning dirt on the surface of the photovoltaic string 1. The pressurized atomized steam is atomized steam with certain air pressure, so that the atomized steam has certain speed when being sprayed to the through hole 241 from the fog outlet 271, and can be sprayed on the surface of the photovoltaic group string 1 through the through hole 241 and with certain impact force, and dirt on the surface of the photovoltaic group string 1 can be washed conveniently. Specifically, when the cleaning device 2 reaches the position of the target photovoltaic string 1, the controller 23 of the cleaning device 2 controls the water storage tank 21 to supply water to the atomized steam device 27, then the controller 23 controls the atomized steam device 27 to work, the atomized steam device 27 generates atomized steam, the atomized steam is sprayed from the mist outlet 271 into the through hole 241 communicated with the mist outlet 271, and is sprayed on the surface of the target photovoltaic string 1 along the through hole 241 on the cleaning arm 24, dirt on the surface of the target photovoltaic string 1 is washed, and after the dirt on the surface is washed, the controller 23 controls the cleaning head 25 to clean the scale left on the surface of the target photovoltaic string 1 after being sprayed with the atomized steam, so that the cleaning effect is ensured. Alternatively, the cleaning head 25 may comprise a cleaning swab, and the control 23 is adapted to: controlling the water storage tank 21 to supply water to the atomized steam device 27; controlling the atomized steam device 27 to spray the generated atomized steam with pressure on the surface of the target photovoltaic string 1 through the through hole 241; the cleaning arm 24 is controlled to move so as to drive the cleaning wool mop on the cleaning head 25 to clean the water left on the surface of the target photovoltaic string 1 sprayed by the atomized steam. The cleaning wool mop is soft in material and not easy to scratch the surface of the photovoltaic string 1.
In one embodiment, as shown in fig. 2 and 3, the wash actuator further includes an adjustment arm 28 and a second actuator; one end of the adjustment arm 28 is mechanically connected to the second driver and the other end of the adjustment arm 28 is mechanically connected to the wash arm 24; the controller 23 is electrically connected to the second driver.
Wherein the adjusting arm 28 is used for adjusting the relative position relationship between the cleaning arm 24 and the surface of the target photovoltaic string 1. When the power generation amount of a certain photovoltaic string 1 is lower than the reference power generation amount, the cleaning device 2 reaches the position of the target photovoltaic string 1 along the guide rail 3, and then the controller 23 controls the adjusting arm 28 to realize the relative position relationship between the cleaning arm 24 connected with the adjusting arm 28 and the surface of the target photovoltaic string 1 according to the cleaning requirement, such as the relative distance between the cleaning arm 24 and the surface of the photovoltaic string 1 and the included angle between the fog outlet direction of the through hole 241 on the cleaning arm 24 and the surface of the photovoltaic string 1. For example, in a specific operation, the controller 23 receives the distance parameter and the air pressure parameter, and is configured to control the adjusting arm 28 according to the distance parameter and the air pressure parameter, so that the cleaning arm 24 mechanically connected to the adjusting arm 28 and the surface of the target pv array string 1 are at a suitable relative position, where the suitable relative position is a positional relationship between the cleaning arm 24 and the target pv array string 1 when the atomized steam can achieve an optimized flushing force on the surface of the target pv array string 1.
In one embodiment, as shown in fig. 2 and 3, the rinse arm 24 includes a plurality of telescoping and communicating tubes. When wasing the photovoltaic module surface, cleaning arm 24 need wash whole photovoltaic group cluster 1 surface, provides a telescopic cleaning arm 24, does benefit to when wasing photovoltaic group cluster 1 surface, realizes guaranteeing the cleaning performance to the washing of photovoltaic group cluster 1 surface optional position dirt to improve the generated energy.
In one embodiment, as shown in fig. 2 and 3, the cleaning arm 24 is a long tube-shaped cleaning arm 24, and the length of the cleaning arm 24 is greater than the maximum side length of the photovoltaic string 1; the included angle between the fog outlet direction of the through hole 241 and the surface of the target photovoltaic string 1 is an acute angle. Wherein, in order to avoid cleaning equipment 2 to need to realize washing whole target photovoltaic group cluster 1 through the secondary removal in the cleaning process, cleaning arm 24 sets up to long tube shape's cleaning arm 24, and cleaning arm 24's length is greater than the biggest length of side of photovoltaic group cluster 1, the play fog direction of through-hole 241 and the contained angle on target photovoltaic group cluster 1 surface are the acute angle, can guarantee like this that cleaning arm 24 goes out when fog, atomizing steam can spray the optional position of target photovoltaic group cluster 1, the realization is to the washing of target photovoltaic group cluster 1.
In one embodiment, the cleaning device 2 further comprises a power source 29, and the power source 29 is electrically connected to the controller 23. The cleaning device 2 has a power supply 29, and the power supply 29 is used for supplying power to the controller 23, so that independent operation can be realized.
In one embodiment, as shown in fig. 2 and 3, the cleaning device 2 includes a housing with a power source 29 disposed within a cavity of the housing. The power supply 29 is arranged in the cavity of the shell, when the cleaning equipment 2 cleans the target photovoltaic string 1, water drops are prevented from splashing on the power supply 29 to cause safety accidents such as short circuit, and the safety of the operation of the cleaning equipment 2 is improved.
In one embodiment, as shown in fig. 2 and 3, the photovoltaic power generation system further includes a monitoring device 5, and the monitoring device 5 is electrically connected to each photovoltaic string 1 through an inverter or a combiner box; the monitoring device 5 is in communication connection with the cleaning equipment 2; the monitoring device 5 is used for acquiring the generated energy parameters of each photovoltaic string 1 and sending the generated energy parameters to the cleaning equipment 2.
The monitoring device 5 is a device capable of collecting the power generation amount parameters of the photovoltaic string 1. The power generation amount parameter is a parameter capable of reflecting the power generation condition of the photovoltaic string 1. Specifically, the monitoring device 5 acquires the generated energy parameter of each photovoltaic group string 1 through the inverter or the combiner box, and sends the acquired generated energy parameter to the cleaning equipment 2, the cleaning equipment 2 judges whether the received generated energy is lower than the reference generated energy, if so, the cleaning equipment 2 moves to the position of the target photovoltaic group string 1, and cleans the surface of the target photovoltaic group string 1.
Optionally, the power generation amount parameter may include power generation amount, position information of the photovoltaic group string 1, and the like, after the monitoring device 5 sends the obtained power generation amount parameter to the cleaning device 2, the cleaning device 2 extracts the power generation amount in the power generation amount parameter to compare with a reference power generation amount, when the power generation amount corresponding to a certain photovoltaic group string 1 is lower than the reference power generation amount, the cleaning device 2 obtains the position information of the photovoltaic group string 1 in the power generation amount parameter corresponding to the target photovoltaic group string 1 to determine the position of the target photovoltaic group string 1, plans an optimal path to the target photovoltaic group string 1 according to the position of the target photovoltaic group string 1, moves to the position of the target photovoltaic group string 1 according to the optimal path, and then cleans the surface of the target photovoltaic group string 1. Through the analysis to the generated energy parameter, cleaning equipment 2 can reach the position of target photovoltaic group cluster 1 fast and wash it, and the cleaning efficiency is high to shortened the washing processing cycle to the photovoltaic group cluster 1 that needs to wash, reduced because of the clean problem on photovoltaic group cluster 1 surface to the influence time of generated energy, thereby improve the generated energy.
In one embodiment, the monitoring device 5 comprises a parameter acquisition unit, a parameter processing unit and an alarm unit, wherein the parameter acquisition unit is connected with each photovoltaic group string 1; the parameter processing unit is respectively connected with the parameter acquisition unit and the alarm unit; the parameter acquisition unit is used for acquiring the power generation quantity parameter of each photovoltaic group string 1, and the parameter processing unit is used for processing the power generation quantity parameter and controlling the alarm unit to give an alarm when the power generation quantity is detected to be lower than the reference power generation quantity. Specifically, the parameter obtaining unit obtains the generated energy parameter of each photovoltaic string 1 from the inverter or the combiner box and sends the generated energy parameter to the parameter processing unit, the parameter processing unit processes the generated energy parameter, the relationship between the generated energy and the reference generated energy is compared, and when the generated energy is detected to be lower than the reference generated energy, the alarm unit is controlled to work, an alarm function is achieved, and an operator is reminded that the working state of the photovoltaic string 1 is abnormal.
In one embodiment, the monitoring device 5 is in communication connection with a remote terminal, and the monitoring device 5 is configured to send an alarm notification to the remote terminal when the power generation amount is detected to be lower than the reference power generation amount.
The alarm notification is used for reminding a worker that the photovoltaic string 1 is abnormal. The remote terminal can be a PC, a mobile phone, a tablet and the like. Specifically, when the monitoring device 5 judges that the power generation amount of a certain photovoltaic string 1 is lower than the reference power generation amount according to the acquired power generation amount parameter, an alarm notification is sent to the remote terminal.
A control method applied to the photovoltaic power generation system, as shown in fig. 6, includes:
s120: acquiring power generation parameters of each photovoltaic group string 1, wherein the power generation parameters comprise information such as power generation, voltage, current and the like;
s140: and when the power generation amount of the photovoltaic group string 1 is detected to be smaller than the reference power generation amount, controlling the cleaning equipment 2 to move to the position of the target photovoltaic group string 1 on the guide rail 3 and controlling the cleaning equipment 2 to clean the target photovoltaic group string 1.
The electric energy generation parameters, the target photovoltaic string 1, and the like are the same as those in the above embodiment of the photovoltaic power generation system, and are not described herein again. Specifically, the power generation amount parameter of each photovoltaic string 1 is obtained and compared with the reference power generation amount, when the power generation amount is detected to be lower than the reference power generation amount, the surface of the photovoltaic string 1 is considered to be influenced by dirt and needs to be cleaned, at the moment, the cleaning device 2 is controlled to move to the position of the target photovoltaic string 1 on the guide rail 3, and the cleaning device 2 is controlled to clean the target photovoltaic string 1 so as to recover the power generation amount of the target photovoltaic string 1.
The embodiment of the control method of the photovoltaic power generation system provided by the invention can realize automatic and accurate cleaning of the photovoltaic string 1 to be cleaned, can automatically work in all weather, is not influenced by places, weather and the like, improves the cleaning efficiency and further improves the generated energy.
In one embodiment, as shown in fig. 7, after controlling the cleaning device 2 to move on the guide rail 3 to the position of the target photovoltaic string 1 and controlling the cleaning device 2 to clean the target photovoltaic string 1, the method further includes:
s160: and if the situation that the generated energy parameter of the target photovoltaic group string 1 is recovered to be normal is detected, sending a normal recovery signal to the remote terminal.
The power generation amount parameter is recovered to be normal, that is, the power generation amount of the target photovoltaic string 1 reaches a higher power generation amount, for example, 80% of the maximum power generation amount of the photovoltaic string 1 is reached, and it is considered that the power generation amount of the current target photovoltaic string 1 is recovered to be normal.
In one embodiment, the photovoltaic power generation system further comprises an automatic water replenishing device 4, and the cleaning equipment 2 comprises a water storage tank 21; the cleaning equipment 2 moves to a water supplementing position in front of the automatic water supplementing device 4 when the water storage tank 21 is lack of water; when the automatic water replenishing device 4 detects that the cleaning apparatus 2 reaches the water replenishing position, the water is replenished to the water storage tank 21.
The control method of the photovoltaic power generation system further includes:
s110: when detecting that storage water tank 21 lacks water, control cleaning equipment 2 and remove the moisturizing position before automatic water supply device 4 for automatic water supply device 4 is detecting that cleaning equipment 2 reachs the moisturizing position, to storage water tank 21 moisturizing.
A control device of a photovoltaic power generation system, as shown in fig. 8, includes:
the generating capacity parameter acquiring module 100 is used for acquiring generating capacity parameters of each photovoltaic group string 1;
and the cleaning control module 200 is used for controlling the cleaning equipment 2 to move to the position of the target photovoltaic string 1 on the guide rail 3 and controlling the cleaning equipment 2 to clean the target photovoltaic string 1 when the generated energy of the photovoltaic string 1 is detected to be lower than the reference generated energy.
The terms of the power generation amount parameter, the target photovoltaic string 1, and the like are the same as those in the above embodiments, and are not described herein. Specifically, the power generation amount parameter acquiring module 100 acquires the power generation amount parameter of each photovoltaic string 1 and sends the power generation amount parameter to the cleaning control module 200, the cleaning control module 200 compares the power generation amount with the reference power generation amount, and when the power generation amount of the photovoltaic string 1 is detected to be lower than the reference power generation amount, the cleaning device 2 is controlled to move to the position of the target photovoltaic string 1 along the guide rail 3 and the cleaning device 2 is controlled to clean the target photovoltaic string 1.
It should be noted that each module in the control device of the photovoltaic power generation system can correspondingly execute the method steps in the above method embodiments, which are not described herein again.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following method steps when executing the program:
s120: acquiring power generation quantity parameters of each photovoltaic group string 1, wherein the power generation quantity parameters comprise power generation quantity;
s140: and when the power generation amount of the photovoltaic string 1 is detected to be lower than the reference power generation amount, controlling the cleaning equipment 2 to move to the position of the target photovoltaic string 1 on the guide rail 3 and controlling the cleaning equipment 2 to clean the target photovoltaic string 1.
By the computer equipment provided by the embodiment of the invention, the acquisition of the power generation quantity parameter of the photovoltaic string 1 can be realized, and further, the comparison between the power generation quantity and the reference power generation quantity is carried out, when the power generation quantity is lower than the reference power generation quantity, the cleaning equipment 2 is controlled to move to the position of the target photovoltaic string 1 along the guide rail 3, and the cleaning equipment 2 is controlled to clean the surface of the target photovoltaic string 1, so that the automatic cleaning of the surface of the photovoltaic string 1 is realized, the photovoltaic string 1 can recover normal power generation quickly, and the overall power generation quantity of a photovoltaic power generation system is improved.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of:
s120: acquiring power generation parameters of each photovoltaic group string 1, wherein the power generation parameters comprise power generation;
s140: and when the power generation amount of the photovoltaic string 1 is detected to be lower than the reference power generation amount, controlling the cleaning equipment 2 to move to the position of the target photovoltaic string 1 on the guide rail 3 and controlling the cleaning equipment 2 to clean the target photovoltaic string 1.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A photovoltaic power generation system, comprising: the photovoltaic module comprises a plurality of photovoltaic module strings, cleaning equipment and guide rails;
the output end of each photovoltaic group string is used for being connected with the input end of a corresponding junction box, the output end of each junction box is connected with the input end of each corresponding inverter, and the output end of each inverter is connected with a power supply network;
the guide rails are arranged between the adjacent photovoltaic string;
the cleaning equipment is used for moving to the position of the target photovoltaic string along the guide rail when the generated energy of the photovoltaic string is lower than the reference generated energy and cleaning the target photovoltaic string.
2. The photovoltaic power generation system of claim 1, wherein two longitudinally adjacent photovoltaic strings form a photovoltaic string unit; the guide rails comprise transverse guide rails and longitudinal guide rails;
the transverse guide rail is arranged at the connection position of two photovoltaic strings of the photovoltaic string units;
the longitudinal guide rails are arranged at the joints of the photovoltaic string units which are transversely adjacently arranged;
the transverse rails and the longitudinal rails communicate with each other at intersections.
3. The photovoltaic power generation system of claim 1, further comprising an automatic water replenishment device; the cleaning equipment comprises a water storage tank;
the cleaning equipment moves to a water supplementing position in front of the automatic water supplementing device when the water storage tank is lack of water;
and the automatic water replenishing device is used for replenishing water to the water storage tank when detecting that the cleaning equipment reaches the water replenishing position.
4. The photovoltaic power generation system of claim 3, wherein the cleaning apparatus comprises: the cleaning device comprises a cleaning device body, a controller, a cleaning arm, a cleaning head and a movable pulley;
the controller, the cleaning arm and the movable pulley are all integrated on the body of the cleaning device;
one end of the cleaning arm is connected with the body of the cleaning equipment, and the other end of the cleaning arm is connected with the cleaning head;
the movable pulley is connected with the guide rail in a matching way;
the controller is used for controlling the movable pulley to move on the guide rail to drive the body of the cleaning equipment to the position of the target photovoltaic string when the generated energy of the photovoltaic string is lower than the reference generated energy, and controlling the cleaning head on the cleaning arm to clean the target photovoltaic string.
5. The photovoltaic power generation system of claim 4, wherein the cleaning apparatus further comprises an atomized steam device; a mist outlet of the atomized steam device is communicated with a cleaning head arranged on the cleaning arm;
the controller is configured to:
controlling the water storage tank to supply water to the atomized steam device;
controlling the atomized steam device to spray the generated pressurized atomized steam on the surface of the target photovoltaic string through the cleaning head;
and controlling the cleaning head to clean the dirt left on the surface of the target photovoltaic string sprayed by the atomized steam.
6. The photovoltaic power generation system of claim 5, wherein the cleaning apparatus further comprises a distance sensor and a pressure sensor;
the distance sensor is arranged on the cleaning arm and used for detecting a distance parameter between the cleaning arm and the surface of the target photovoltaic string and feeding back the distance parameter to the controller;
the pressure sensor is arranged on the atomized steam device and used for detecting the air pressure parameter of the atomized steam and feeding the air pressure parameter back to the controller;
the controller is used for controlling the distance between the cleaning arm and the surface of the target photovoltaic group string according to the distance parameter and the air pressure parameter, and controlling the air pressure of the atomized steam generated by the atomized steam device.
7. The photovoltaic power generation system of claim 1, further comprising a monitoring device electrically connected to each of the photovoltaic strings through the inverter or the combiner box; the monitoring device is in communication connection with the cleaning equipment;
the monitoring device is used for acquiring the generated energy parameters of the photovoltaic string and sending the generated energy parameters to the cleaning equipment.
8. A control method of a photovoltaic power generation system, characterized by comprising:
acquiring power generation quantity parameters of each photovoltaic group string, wherein the power generation quantity parameters comprise power generation quantity;
when the power generation amount of the photovoltaic group string is detected to be lower than the reference power generation amount, controlling cleaning equipment to move to the position of a target photovoltaic group string along a guide rail and controlling the cleaning equipment to clean the target photovoltaic group string;
the output end of each photovoltaic group string is used for being connected with the input end of the corresponding junction box, the output end of each junction box is connected with the input end of each corresponding inverter, and the output end of each inverter is connected with a power supply network.
9. A control device of a photovoltaic power generation system, characterized by comprising:
the generating capacity parameter acquiring module is used for acquiring generating capacity parameters of each photovoltaic group string, wherein the generating capacity parameters comprise generating capacity;
the cleaning control module is used for controlling the cleaning equipment to move to the position of the target photovoltaic string along the guide rail and controlling the cleaning equipment to clean the target photovoltaic string when the generated energy of the photovoltaic string is detected to be lower than the reference generated energy;
the output end of each photovoltaic group string is used for being connected with the input end of the corresponding junction box, the output end of each junction box is connected with the input end of each corresponding inverter, and the output end of each inverter is connected with a power supply network.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the method steps of claim 8 are implemented when the processor executes the program.
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