Grid-connected photovoltaic power station and use method thereof

By adopting a tilted and slidable photovoltaic panel design and automatic cleaning system in grid-connected photovoltaic power stations, the problem of traditional solar panels being easily covered by dust and damaged in extreme weather is solved, and an efficient automatic cleaning and protection mechanism is achieved.

CN119727577APending Publication Date: 2025-03-28URBAN-RURAL JOINT INVESTMENT CONSTR DEV CO LTD
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Patent Information

Application Number
CN202411900177.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Traditional solar panels are easily covered with dust and impurities during use, reducing power generation efficiency, and being easily damaged by hail in extreme weather, resulting in economic losses.

Method used

A grid-connected photovoltaic power station is designed, adopting an inclined and slidable photovoltaic panel installation method, and a nozzle and a water pump are installed at the inclined surface of the trapezoidal base, and filtered rainwater is collected by a water storage tank for automatic cleaning. In extreme weather, the photovoltaic panels can be retracted into the storage tank to avoid damage and push the filter to rotate and open through the transmission assembly to prevent direct hail from hitting directly.

Benefits of technology

An automated cleaning and protection mechanism is realized, which improves the power generation efficiency and durability of solar panels, and reduces maintenance costs and losses caused by extreme weather.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of grid-connected photovoltaic power stations, in particular to a grid-connected photovoltaic power station and a using method thereof.The grid-connected photovoltaic power station comprises a plurality of trapezoidal bases installed together in parallel, a plurality of solar cell panels are obliquely placed in a three-dimensional mode, and due to the gravity effect, the multiple solar cell panels on the whole face are washed and cleaned at the same time; in addition, water in the water storage tank is pumped by the water pump, the water storage tank is used for collecting rainwater, the top of the water storage tank is provided with the filter screen used for filtering the rainwater, impurities such as gravel are prevented from blocking the water spraying pipeline, the solar cell panels are designed in a hidden mode and can be prevented from being smashed, and along with retraction of the solar cell panels, the solar cell panels can be recycled. When the hail is damaged, the hail can also drive the filter screen mounted at the top of the water storage tank to rotate and incline, so that the hail is prevented from directly and vertically impacting the filter screen to damage the filter screen, impurities and foreign matters covering the filter screen can be discharged in a manner of inclining the filter screen, the permeability of the filter screen is improved, and the water storage efficiency in rainy days is ensured.
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Description

Technical Field

[0001] The present invention relates to the technical field of grid-connected photovoltaic power stations, and in particular to a grid-connected photovoltaic power station and a method for using the same. Background Art

[0002] Grid-connected photovoltaic power stations are mainly composed of solar cell arrays, system controllers, grid-connected inverters, distribution cabinets, monitoring and control systems, and solar tracking systems. These components work together to convert solar energy into electrical energy and connect it to the power grid safely and efficiently.

[0003] Traditional solar cell arrays are usually neatly placed in an open environment. In order to improve space utilization and facilitate future management and maintenance, the distance between two adjacent solar cells is small.

[0004] However, during the use of solar panels, dust and impurities will inevitably cover the surface of the solar panels, reducing the power generation efficiency. They need to be cleaned regularly, but due to the large area of ​​solar panels, cleaning them one by one is too inefficient. In addition, in extreme weather such as hail, the laid solar panels are easily damaged by the impact of hail, which can easily cause huge economic losses. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a grid-connected photovoltaic power station and a method of using the same, which can effectively solve the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a grid-connected photovoltaic power station, comprising a plurality of trapezoidal bases installed in parallel with each other, a plurality of the trapezoidal bases are provided with storage cavities at the inclined surfaces, a plurality of the storage cavities are provided with a plurality of horizontal and equally spaced partitions, the plurality of the partitions divide the storage cavities into a plurality of storage slots, a plurality of water storage tanks are respectively fixedly installed on the top of the corresponding T-shaped bases, a water pump is fixedly installed on one side of the plurality of water storage tanks, a nozzle is installed on the output end of the plurality of water pumps, the plurality of nozzles are respectively opposite to the inclined surface of the trapezoidal base, a plurality of filter screens are respectively rotatably installed at the corresponding top openings of the water storage tanks, a plurality of photovoltaic panels are respectively tilted and synchronously slidably installed in the corresponding storage slots, and when the plurality of photovoltaic panels are completely slid and retracted into the storage slots, the corresponding filter screens are rotated to open, the inclination angles of the plurality of photovoltaic panels are consistent with the inclination angles of the inclined surfaces of the trapezoidal bases, and when the photovoltaic panels slide to the corresponding notch positions of the storage slots, they coincide with the inclined notches of the storage slots.

[0008] Furthermore, the lengths of the several partitions are different, but the same end is flush with the inclined surface of the trapezoidal base, and several partitions are provided with sliding grooves, the positions of several sliding grooves are consistent, and they are on the same vertical line up and down, and limiting grooves are provided on two opposite inner walls of several sliding grooves.

[0009] Furthermore, the tops of several of the filter nets are flush with the top of the water tank, and the two opposite outer walls of several of the filter nets are vertically fixed with rotating shafts, several of the water tanks are provided with water storage cavities on the tops, and several of the filter nets are rotatably installed at the corresponding upper cavity openings of the water storage cavities through the rotating shafts.

[0010] Furthermore, several of the photovoltaic panels are fixedly connected to a fixing rod on the same side, and several of the fixing rods are vertically fixedly installed with sliding rods at one end away from the corresponding photovoltaic panels. The sliding rods are simultaneously slidably installed in several sliding grooves, and several rollers are installed on both sides of the sliding rods, and several of the rollers are rollingly set in the corresponding limit grooves.

[0011] Furthermore, a telescopic cylinder is fixedly installed in the trapezoidal base, an output end of the telescopic cylinder is connected to a telescopic rod, and the bottom of the sliding rod is vertically fixedly connected to the telescopic rod.

[0012] Furthermore, a transmission assembly is provided between the slide rod and the corresponding filter screen, and the transmission assembly includes a connecting rod vertically fixedly installed on one side of the slide rod, and also includes a limiting cylinder fixedly installed at the top of the upper cavity of the storage cavity.

[0013] Furthermore, a lifting rod is installed in the limiting cylinder for lifting and sliding. The bottom of the lifting rod passes through the limiting cylinder and a first connecting strip is arranged between the lifting rod and the connecting rod. One end of the first connecting strip is rotatably connected to the connecting rod, and the other end is rotatably connected to the lifting rod.

[0014] Furthermore, a connecting seat is fixedly installed at the bottom of the filter screen, the top of the lifting rod extends through the water tank, and a second connecting strip is arranged between the lifting rod and the connecting seat, one end of the second connecting strip is rotatably connected to the lifting rod, and the other end is rotatably connected to the connecting seat.

[0015] Furthermore, the inclination angle of the first connecting strip is always greater than ° and less than °, and the lifting rod passes through the top of the trapezoidal base and the bottom of the water tank and is embedded with a sealing rubber ring.

[0016] A method for using a grid-connected photovoltaic power station comprises the following steps:

[0017] S1. Installation and commissioning: select a suitable installation site to ensure that the solar cell array can fully receive sunlight, install the solar cell array, inverter, distribution cabinet and other equipment according to the design requirements, conduct equipment commissioning and performance testing to ensure the normal operation of the power station.

[0018] S2. Operation and maintenance: regularly check the operation status and performance parameters of the power station equipment, maintain and service the inverter, power distribution cabinet and other equipment to ensure their long-term stable operation. When the power grid fails or the power goes out, disconnect the power station from the power grid in time to protect the safety of the power grid. The water storage tank collects rainwater filtered by the filter, and starts the water pump to extract the rainwater in the water storage tank and spray it out through the nozzle to wash the surface of several photovoltaic panels distributed in an up and down tilt, clean the dust and dirt on the surface of the solar cell array, and maintain its good photoelectric conversion efficiency.

[0019] S3. Protection and treatment. When facing extremely bad weather such as hail, the telescopic cylinder can be started, and the sliding rod can be pushed by the telescopic rod, so that the corresponding photovoltaic panels can be pulled back into the corresponding storage slots through a number of fixed rods to avoid damage to the photovoltaic panels caused by hail impact. In addition, along with the sliding of the sliding rod, the connecting rod will also be pushed, so that the lifting rod can be pushed up through the first connecting bar, and then the connecting seat can be pushed through the second connecting bar, that is, the filter can be rotated and opened, which can prevent hail from directly hitting the filter vertically and causing damage to the filter. At the same time, the particulate impurities that were originally filtered by the filter and remained on the surface of the filter can be poured out of the filter by tilting, so as to avoid affecting the normal passage of rainwater through the filter.

[0020] S4. Monitoring and analysis: Use the monitoring and control system to monitor the operating status and data parameters of the power plant in real time, analyze and process the data, promptly discover and solve potential problems, and adjust the power plant's operating strategy and optimize power generation efficiency based on the data analysis results.

[0021] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] 1. Arrange several solar panels in a tilted three-dimensional manner, and install nozzles and water pumps on the surface of the top row of solar panels to wash the surface of the solar panels. Due to the effect of gravity, the entire solar panels are washed and cleaned at the same time. In addition, the water pump draws water from the water tank, which is used to collect rainwater. A filter screen is installed on the top of the water tank to filter rainwater to prevent impurities such as sand and gravel from clogging the water spray pipeline;

[0023] 2. Some solar panels adopt a hidden design. They can be retracted into the trapezoidal base in extreme weather such as hail to avoid being damaged. At the same time, as the solar panels retract, the filter installed on the top of the water tank will also rotate and tilt, thereby preventing hail from directly hitting the filter vertically and causing damage to the filter. At the same time, the impurities and foreign matter covering the filter can be discharged by tilting the filter, thereby improving the permeability of the filter and ensuring water storage efficiency on rainy days. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the trapezoidal base and the water storage tank of the present invention;

[0027] Figure 3 It is a schematic diagram of the water storage tank structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the trapezoidal base structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the transmission structure of the photovoltaic panel and the filter screen of the present invention;

[0030] Figure 6 It is a schematic diagram of the transmission assembly structure of the present invention.

[0031] The numbers in the figure represent:

[0032] 1. Trapezoidal base; 11. Storage cavity; 12. Partition; 13. Slide;

[0033] 2. Water storage tank; 21. Water pump; 22. Nozzle; 23. Filter;

[0034] 3. Photovoltaic panel; 31. Fixed rod; 32. Sliding rod; 33. Roller; 34. Telescopic cylinder; 35. Telescopic rod;

[0035] 41. Connecting rod; 42. First connecting strip; 43. Position limiting cylinder; 44. Lifting rod; 45. Connecting seat. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] Embodiment 1:

[0039] Reference Figure 1-6 , which is the first embodiment of the present invention, a grid-connected photovoltaic power station includes a plurality of trapezoidal bases 1 installed in parallel with each other, a storage cavity 11 is provided at the inclined surface of the plurality of trapezoidal bases 1, and an equipment cavity is also provided between the lower bottom of the trapezoidal base 1 and the storage cavity 11, a system controller, a grid-connected inverter, a power distribution cabinet, a monitoring and control system are installed in the equipment cavity, and a complete set of grid-connected photovoltaic power generation system is formed in cooperation with the photovoltaic panel 3, a plurality of horizontal and evenly spaced partitions 12 are installed in the plurality of storage cavities 11, and the plurality of partitions 12 divide the storage cavity 11 into a plurality of storage slots, and the cavity depths of the plurality of storage slots are different, but the opening diameters are consistent, a plurality of water storage tanks 2 are respectively fixedly installed on the top of the corresponding T-shaped bases 1, and a water pump 21 is fixedly installed on one side of the plurality of water storage tanks 2. Since the water storage tank 2 is designed to be large at the top and small at the bottom, the water pump 21 installed at the bottom will also be protected by the water storage tank 2, and has an anti-collision effect, The output end of the water pump 21 is equipped with a nozzle 22, and several nozzles 22 are opposite to the inclined surface of the trapezoidal base 1, that is, the water sprayed from the nozzle 22 will be directly sprayed on the surface of several photovoltaic panels 3 of the trapezoidal base 1, and there will be no problem of spraying waste. Several filter screens 23 are rotatably installed at the corresponding upper top openings of the water storage tank 2, and several photovoltaic panels 3 are tilted and synchronously slidably installed in the corresponding storage grooves, and when several photovoltaic panels 3 are completely slid back into the storage grooves, the corresponding filter screens 23 are rotated to open, and the inclination angles of several photovoltaic panels 3 are consistent with the inclination angles of the inclined surface of the trapezoidal base 1, and when the photovoltaic panels 3 slide to the corresponding storage groove notch position, they coincide with the inclined notch of the storage groove, ensuring that when the nozzle 22 sprays flushing water on the top photovoltaic panel 3, the water flow will flow down along the surface of the trapezoidal base 1 due to gravity, thereby also having a good flushing effect on the several photovoltaic panels 3 below.

[0040] Embodiment 2:

[0041] Reference Figure 1-4, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the lengths of the plurality of partitions 12 are different, but the same end is flush with the inclined surface of the trapezoidal base 1, ensuring that when the photovoltaic panels 3 are finally pushed to the notch position of the storage slot, they can all be effectively rinsed, and the plurality of partitions 12 are penetrated by a slide groove 13, the positions of the plurality of slide grooves 13 are consistent, and the upper and lower parts are on the same vertical line, and the two opposite inner side walls of the plurality of slide grooves 13 are provided with limiting grooves, the tops of the plurality of filter screens 23 are flush with the top of the water storage tank 2, and the two opposite outer side walls of the plurality of filter screens 23 are vertically fixed with a rotating shaft, the tops of the plurality of water storage tanks 2 are provided with a water storage cavity, and the plurality of filter screens 23 are rotatably installed at the corresponding upper cavity opening of the water storage cavity through the rotating shaft, and the two opposite inner cavity walls of the cavity opening of the water storage cavity are provided with a rotating hole for facilitating the rotational installation of the rotating shaft.

[0042] The remaining structures are the same as those of Example 1.

[0043] Embodiment 3:

[0044] Reference Figure 5-6 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a plurality of photovoltaic panels 3 are fixedly connected to a fixed rod 31 on the same side, and a plurality of fixed rods 31 are vertically fixedly installed with a sliding rod 32 at one end away from the corresponding photovoltaic panel 3. The sliding rod 32 is slidably installed in a plurality of sliding grooves 13 at the same time, and a plurality of rollers 33 are installed on both sides of the sliding rod 32. The plurality of rollers 33 are rollingly set in the corresponding limiting grooves to improve the sliding stability of the sliding rod 32 and prevent the sliding rod 32 from sliding up and down. A telescopic cylinder 34 is fixedly installed in the trapezoidal base 1, and a telescopic rod 35 is connected to the output end of the telescopic cylinder 34. The bottom of the sliding rod 32 is vertically fixedly connected to the telescopic rod 35;

[0045] A transmission assembly is arranged between the slide bar 32 and the corresponding filter screen 23, and the transmission assembly includes a connecting rod 41 vertically fixedly installed on one side of the slide bar 32, and also includes a limiting cylinder 43 fixedly installed at the top of the upper cavity of the storage cavity 11, and a lifting rod 44 is installed in the limiting cylinder 43 for lifting and sliding. The bottom of the lifting rod 44 passes through the limiting cylinder 43 and a first connecting strip 42 is arranged between the lifting rod 44 and the connecting rod 41. One end of the first connecting strip 42 is rotatably connected to the connecting rod 41, and the other end is rotatably connected to the lifting rod 44. A connecting seat 45 is fixedly installed at the bottom of the filter screen 23, and the top of the lifting rod 44 passes through the extension The lifting rod 44 is inserted into the water tank 2, and a second connecting strip is arranged between the lifting rod 44 and the connecting seat 45. One end of the second connecting strip is rotatably connected to the lifting rod 44, and the other end is rotatably connected to the connecting seat 45. The inclination angle of the first connecting strip 42 is always greater than 45° and less than 90°, ensuring that the movement of the connecting rod 41 can push the lifting rod 44 to lift and slide through the first connecting strip 42, and the lifting rod 44 passes through the top of the trapezoidal base 1 and the bottom of the water tank 2, and sealing rubber rings are embedded and installed to ensure that when the lifting rod 44 is lifted and slid, the water in the water tank 2 will not penetrate and leak from the penetration of the lifting rod 44.

[0046] The remaining structure is the same as that of Example 2.

[0047] Embodiment 4:

[0048] Reference Figure 1-6 , which is a fourth embodiment of the present invention, provides: a method for using a grid-connected photovoltaic power station, comprising the following steps:

[0049] S1. Installation and commissioning: select a suitable installation site to ensure that the solar cell array can fully receive sunlight, install the solar cell array, inverter, distribution cabinet and other equipment according to the design requirements, conduct equipment commissioning and performance testing to ensure the normal operation of the power station.

[0050] S2, operation and maintenance, regularly check the operation status and performance parameters of the power station equipment, maintain and service the inverter, power distribution cabinet and other equipment to ensure their long-term stable operation, and promptly disconnect the power station from the power grid to protect the safety of the power grid when the power grid fails or blackouts. The water tank 2 collects rainwater filtered by the filter 23, and starts the water pump 21 to extract the rainwater in the water tank 2 and spray it out through the nozzle 22 to wash the surface of several photovoltaic panels 3 distributed in an up-and-down tilt, clean the dust and dirt on the surface of the solar cell array, and maintain its good photoelectric conversion efficiency;

[0051] S3. Protection and treatment. When facing extremely bad weather such as hail, the telescopic cylinder 34 can be started, and the sliding rod 32 can be pushed by the telescopic rod 35, so that the corresponding photovoltaic panels 3 can be pulled back into the corresponding storage grooves through the fixed rods 31 to avoid hail impact and damage to the photovoltaic panels 3. In addition, along with the sliding of the sliding rod 32, the connecting rod 41 will be pushed, so that the lifting rod 44 can be pushed up through the first connecting bar 42, and then the connecting seat 45 can be pushed through the second connecting bar, that is, the filter 23 can be rotated and opened, so that hail can be prevented from directly hitting the filter 23 vertically and causing damage to the filter 23. At the same time, the particulate impurities that were originally filtered by the filter 23 and retained on the upper surface of the filter 23 can be poured out of the filter 23 by tilting, so as to avoid affecting the normal passage of rainwater through the filter 23.

[0052] S4. Monitoring and analysis: Use the monitoring and control system to monitor the operating status and data parameters of the power plant in real time, analyze and process the data, promptly discover and solve potential problems, and adjust the power plant's operating strategy and optimize power generation efficiency based on the data analysis results.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grid-connected photovoltaic power station, comprising a plurality of trapezoidal bases (1) installed in parallel with each other, wherein a plurality of the trapezoidal bases (1) are provided with a storage cavity (11) at the inclined surface, wherein a plurality of horizontal and equally spaced partitions (12) are installed in the plurality of the storage cavities (11), wherein the plurality of the partitions (12) divide the storage cavity (11) into a plurality of storage slots, wherein: Also includes: A plurality of water storage tanks (2) are fixedly mounted on the top of the corresponding T-shaped base (1), a water pump (21) is fixedly mounted on one side of the plurality of water storage tanks (2), a nozzle (22) is mounted on the output end of the plurality of water pumps (21), and the plurality of nozzles (22) are opposite to the inclined surface of the trapezoidal base (1); A plurality of filter screens (23) are rotatably mounted on the top openings of the corresponding water storage tanks (2); A plurality of photovoltaic panels (3) are respectively tilted and synchronously slidably installed in corresponding storage grooves, and when the plurality of photovoltaic panels (3) are completely slid and retracted into the storage grooves, the corresponding filter screens (23) are rotated and opened, and the tilt angles of the plurality of photovoltaic panels (3) are consistent with the tilt angles of the inclined surfaces of the trapezoidal base (1), and when the photovoltaic panels (3) slide to the corresponding storage groove notch positions, they coincide with the tilted notches of the storage grooves.

2. A grid-connected photovoltaic power station according to claim 1, characterized in that: The lengths of the plurality of partitions (12) are different, but the same end is flush with the inclined surface of the trapezoidal base (1), and a slide groove (13) is provided through the plurality of partitions (12). The positions of the plurality of slide grooves (13) are consistent and are located on the same vertical line from top to bottom, and two opposite inner side walls of the plurality of slide grooves (13) are provided with limiting grooves.

3. A grid-connected photovoltaic power station according to claim 1, characterized in that: The tops of the plurality of filter screens (23) are flush with the top of the water storage tank (2), and two opposite outer side walls of the plurality of filter screens (23) are vertically fixedly mounted with a rotating shaft, and the tops of the plurality of water storage tanks (2) are provided with a water storage cavity, and the plurality of filter screens (23) are rotatably mounted at the corresponding upper cavity openings of the water storage cavity via the rotating shaft.

4. A grid-connected photovoltaic power station according to claim 2, characterized in that: A fixing rod (31) is fixedly connected to the same side of the plurality of photovoltaic panels (3), and a sliding rod (32) is vertically fixedly installed at one end of the plurality of fixing rods (31) away from the corresponding photovoltaic panels (3). The sliding rods (32) are slidably installed in a plurality of sliding grooves (13) at the same time, and a plurality of rollers (33) are installed on both sides of the sliding rods (32), and the plurality of rollers (33) are rollingly set in the corresponding limiting grooves.

5. A grid-connected photovoltaic power station according to claim 4, characterized in that: A telescopic cylinder (34) is fixedly installed inside the trapezoidal base (1), the output end of the telescopic cylinder (34) is connected to a telescopic rod (35), and the bottom of the sliding rod (32) is vertically fixedly connected to the telescopic rod (35).

6. A grid-connected photovoltaic power station according to claim 1, characterized in that: A transmission assembly is provided between the slide bar (32) and the corresponding filter screen (23), and the transmission assembly comprises a connecting rod (41) vertically fixedly mounted on one side of the slide bar (32), and also comprises a limiting cylinder (43) fixedly mounted on the top of the storage chamber (11).

7. A grid-connected photovoltaic power station according to claim 6, characterized in that: A lifting rod (44) is installed in the limiting cylinder (43) in a lifting and sliding manner. The bottom of the lifting rod (44) passes through the limiting cylinder (43) and a first connecting strip (42) is arranged between the lifting rod (44) and the connecting rod (41). One end of the first connecting strip (42) is rotatably connected to the connecting rod (41), and the other end is rotatably connected to the lifting rod (44).

8. A grid-connected photovoltaic power station according to claim 1, characterized in that: A connecting seat (45) is fixedly mounted at the bottom of the filter screen (23); the top of the lifting rod (44) extends through the water tank (2); a second connecting strip is provided between the lifting rod (44) and the connecting seat (45); one end of the second connecting strip is rotatably connected to the lifting rod (44) and the other end is rotatably connected to the connecting seat (45).

9. A grid-connected photovoltaic power station according to claim 1, characterized in that: The inclination angle of the first connecting strip (42) is always greater than 45° and less than 90°, and the lifting rod (44) passes through the upper top of the trapezoidal base (1) and the lower bottom of the water tank (2) and is embedded with a sealing rubber ring.

10. A method for using a grid-connected photovoltaic power station as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1. Installation and commissioning: select a suitable installation site to ensure that the solar cell array can fully receive sunlight, install the solar cell array, inverter, distribution cabinet and other equipment according to the design requirements, conduct equipment commissioning and performance testing to ensure the normal operation of the power station. S2, operation and maintenance, regularly checking the operating status and performance parameters of the power station equipment, maintaining and servicing the inverter, power distribution cabinet and other equipment, and promptly disconnecting the power station from the power grid to protect the safety of the power grid when a power grid failure or power outage occurs. The water storage tank (2) collects rainwater filtered by the filter (23), and the water pump (21) is started to extract the rainwater in the water storage tank (2), and sprays it out through the nozzle (22) to wash the surfaces of the photovoltaic panels (3) distributed in an up-and-down tilt. S3, protection and treatment, when facing extremely bad weather such as hail, the telescopic cylinder (34) is started, and the sliding rod (32) is pushed through the telescopic rod (35), so that the corresponding photovoltaic panels (3) are pulled back into the corresponding storage grooves through the fixed rods (31) respectively, so as to prevent the photovoltaic panels (3) from being damaged by the impact of hail, and the sliding of the sliding rod (32) will also push the connecting rod (41), so as to push the lifting rod (44) to rise through the first connecting bar (42), and then push the connecting seat (45) through the second connecting bar, that is, push the filter (23) to rotate and open, so that the hail can be prevented from directly hitting the filter (23) vertically, and the impurities can be poured out of the filter (23) by tilting; S4. Monitoring and analysis: Use the monitoring and control system to monitor the operating status and data parameters of the power plant in real time, analyze and process the data, promptly discover and solve potential problems, and adjust the power plant's operating strategy and optimize power generation efficiency based on the data analysis results.