An intelligent protection device for offshore photovoltaic arrays

Abstract

The present invention relates to an intelligent protective device for an offshore photovoltaic array in a photovoltaic project. The device consists of an anchoring device, an edge floating photovoltaic assembly and an intermediate floating photovoltaic assembly. The anchoring device connects the floating photovoltaic assembly and the fixed anchor respectively through a connecting rope; the edge floating photovoltaic assembly is connected to the baffle through an offshore photovoltaic health sensor, and the photovoltaic structure health detection is realized by detecting the pressure data characteristics, and the arc-shaped baffle with irregular concave and convex surfaces can effectively form turbulent broken waves; the edge floating photovoltaic assembly and the intermediate floating photovoltaic assembly are connected to each other through multi-degree-of-freedom damping connectors, which have good energy dissipation and shock absorption effects, extend the service life of the connectors, and ensure the overall structural stability of the photovoltaic array. The present invention can effectively protect the offshore photovoltaic array, realize the intelligent early warning function, extend the service life of the offshore photovoltaic array, and help to improve the project benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore photovoltaic power stations, and in particular relates to an intelligent protective device for offshore photovoltaic arrays. Background Art

[0002] In recent years, with the important layout of the country's new energy strategy, photovoltaic power generation has developed more and more rapidly, but photovoltaic power generation has now encountered its own bottleneck. With the gradual reduction of traditional photovoltaic land and the red line warning of the number of cultivated land, the scope of application of traditional photovoltaics has become narrower and narrower. Offshore photovoltaics have solved the disadvantage of traditional photovoltaic power generation occupying more land. The ocean area is vast, the scope of photovoltaic application is wide, there is no obstruction in the sky, and the utilization efficiency of solar energy is high. The efficiency of offshore photovoltaic power generation is 30% higher than that of land photovoltaic power generation. It is an important area for the development of the photovoltaic industry in the future.

[0003] However, compared with traditional photovoltaics, offshore photovoltaics also have their own limitations. For example, offshore photovoltaics will face more severe wind and wave loads, and the marine environment has a high salt concentration. With the cyclic load of wind and waves in random directions, photovoltaic modules will fatigue, and the anti-corrosion coating of traditional connectors will break and corrode seriously, which will greatly affect the service life of offshore photovoltaics and reduce project benefits. At the same time, due to serious marine pollution, there is a lot of floating garbage at sea, and there are floating ice at sea in winter. When floating garbage and floating ice hit the offshore photovoltaic array with waves, it will cause a series of damages to the photovoltaic array, and the staff will not be able to grasp the health status of the photovoltaic array in time, which will also affect the benefits of offshore photovoltaic projects.

[0004] In response to the environmental loads of offshore photovoltaics, the impact problems of floating objects and ice floes, and the monitoring of the health status of offshore photovoltaic arrays, this device has invented a multi-degree-of-freedom damping connection device, an offshore photovoltaic health sensor and a baffle, which can better solve the fatigue effect of environmental loads on photovoltaic floating panel connectors, the impact loads of waves and floating objects on photovoltaic arrays, and realize structural safety and health warning of photovoltaic arrays. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of offshore photovoltaic connection damage, wave breaking, floating object impact and photovoltaic array structure health warning, and propose an offshore photovoltaic array intelligent protection device, which can better solve the fatigue effect of environmental loads on photovoltaic floating panel connectors, the impact load of waves and floating objects on photovoltaic arrays, and realize the structural safety and health warning of photovoltaic arrays, thereby extending the service life of offshore photovoltaic projects to a certain extent and improving project benefits.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An intelligent protective device for an offshore photovoltaic array comprises an anchoring device, an edge floating photovoltaic module and a middle floating photovoltaic module; the edge floating photovoltaic module and the middle floating photovoltaic module are connected to form an offshore photovoltaic array, adjacent middle floating photovoltaic modules are connected to each other and are located in the middle of the offshore photovoltaic array; the edge floating photovoltaic modules are located at the edges of the offshore photovoltaic array, and adjacent edge floating photovoltaic modules are connected to each other to form a closed outer contour surrounding the middle floating photovoltaic module; the offshore photovoltaic array is fixed on the sea surface by the anchoring device.

[0008] As a further preferred embodiment of the present invention, the anchoring device includes a connecting cable and a fixed anchor, one end of the connecting cable is connected to the edge floating photovoltaic assembly or the middle floating photovoltaic assembly, and the other end of the connecting cable is connected to the fixed anchor.

[0009] As a further preferred embodiment of the present invention, the edge floating photovoltaic assembly includes a photovoltaic box, an edge baffle, an offshore photovoltaic health sensor and a multi-degree-of-freedom damping connector; the edge baffle is arranged around the offshore photovoltaic array, the lower part of the photovoltaic box is a HDPE standard floating box, and the upper part is equipped with photovoltaic panels for power generation; the photovoltaic box at the edge position is connected to the edge baffle through the offshore photovoltaic health sensor, and adjacent photovoltaic boxes are connected to each other through a multi-degree-of-freedom damping connector to form a closed outer contour surrounding the middle floating photovoltaic.

[0010] As a further preferred embodiment of the present invention, the edge baffle includes a corner baffle and a middle baffle; the corner baffles are arranged at the four corners, and two adjacent corner baffles are connected by a middle baffle; the baffle shells of the corner baffles and the middle baffle are both provided with a raised portion, the surface is uneven, and the overall cross-section is arc-shaped.

[0011] As a further preferred embodiment of the present invention, the offshore photovoltaic health sensor includes a pull rod, a pull rod support, a spring and a pressure sensor; one end of the pull rod is in the shape of a straight rod, and the other end is in the shape of an arc, and a spring groove is provided on the arc end of the pull rod; one end of the pull rod support is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end of the pull rod support is hollow and also provided with a notch; the pull rod and the pull rod support are arranged opposite to each other, the arc end of the pull rod is placed in the hollow of the arc end of the pull rod support, and the diameter of the arc end of the pull rod is larger than the width of the notch of the pull rod support, one end of the spring is arranged in the spring groove on the arc surface of the arc end of the pull rod, and the spring is arranged on the 0°, 60°, 120°, -60°, and -120° arc surfaces of the arc end of the pull rod; the other end of the 0° spring is fixed to the pressure sensor, and the other ends of the other springs are fixed to the inner wall of the arc end of the pull rod support.

[0012] As a further preference of the present invention, a hollow cavity is also provided on the tie rod support, and the offshore photovoltaic health sensor also includes an antenna, a battery, a LORA wireless communication interface, an MCU and a data storage device arranged in the hollow cavity of the tie rod support; the pressure sensor measures the spring pressure, and the measured pressure data is processed by the MCU and transmitted to the data storage device for storage; when the MCU detects that the pressure sensor is abnormal, the alarm signal is transmitted to the LORA wireless communication interface and the antenna to realize the alarm function.

[0013] As a further preferred embodiment of the present invention, the multi-degree-of-freedom damping connecting member includes a connecting rod, a spring and a connecting rod support; one end of the connecting member is in the shape of a straight rod, and the other end is in the shape of an arc, and a spring groove is provided on the arc end of the connecting member; one end of the connecting rod support is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end of the connecting rod support is hollow and also provided with a notch; the connecting rod and the connecting rod support are arranged opposite to each other, the arc end of the connecting rod is placed in the hollow of the arc end of the connecting rod support, and the diameter of the arc end of the connecting rod is larger than the width of the notch of the connecting support, one end of the spring is arranged in the spring groove on the arc surface of the arc end of the connecting rod, and the spring is arranged on the 0°, 60°, 120°, -60°, -120° arc surfaces of the arc end of the connecting rod; the other end of the spring is fixedly connected to the inner wall of the arc end of the connecting rod support.

[0014] As a further preferred embodiment of the present invention, the force formula of the multi-degree-of-freedom damping connector is as shown in the formula:

[0015] F=kΔ 0o +k(Δ -120o +Δ -60o +Δ 60o +Δ 120o ) / 2

[0016] Where F is the impact load, k is the spring stiffness coefficient, Δ io For i o The spring deflection at the specified position.

[0017] As a further preferred embodiment of the present invention, the intermediate floating photovoltaic assembly includes a photovoltaic box and a multi-degree-of-freedom damping connector; adjacent photovoltaic boxes are interconnected by the multi-degree-of-freedom damping connector and are located in the middle of the offshore photovoltaic array, and are connected to the edge floating photovoltaic assemblies by the multi-degree-of-freedom damping connector to form an offshore photovoltaic array.

[0018] As a further preferred embodiment of the present invention, the fixing anchor is forged from cast steel.

[0019] The present invention has the following beneficial effects:

[0020] Compared with the prior art, the advantages of the present invention are: an intelligent protective device for offshore photovoltaic arrays proposed by the present invention breaks through the limitations of traditional single-degree-of-freedom connectors of offshore photovoltaics through multi-degree-of-freedom damping connectors, solves the problems of fatigue of photovoltaic components, rupture of anti-corrosion coatings of traditional connectors and serious corrosion due to random wind and wave cyclic loads, and adopts a multi-degree-of-freedom damping system to reduce the impact of random impact loads generated by breaking waves and floating objects on offshore photovoltaic arrays, ensures the overall structural stability, and extends the service life of offshore photovoltaic array components; an offshore photovoltaic health sensor proposed by the present invention can realize the health warning function of photovoltaic array structure by measuring the impact load borne by the baffle and performing edge computing analysis of the impact load; the baffle surface proposed by the present invention is uneven and the baffle adopts a parabolic arc shape as a whole. When breaking waves hit, a large amount of turbulence is formed to break the waves and reduce the impact load of breaking waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the anchoring device of the present invention;

[0023] Figure 3 is a top view of an edge floating photovoltaic module of the present invention;

[0024] Figure 4 is a schematic structural diagram of an edge floating photovoltaic module of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of an offshore photovoltaic sensor;

[0026] Figure 6 It is a schematic diagram of the internal structure of a multi-degree-of-freedom damping connector;

[0027] Figure 7 This is a schematic diagram of the structure of the intermediate floating photovoltaic module.

[0028] Among them are: 1. Anchoring device; 2. Edge floating photovoltaic modules; 3. Middle floating photovoltaic modules; 11. Connecting rope; 12. Fixed anchor; 21. Photovoltaic box; 22. Corner baffles; 23. Middle baffles; 24. Offshore photovoltaic health sensor; 25. Multi-degree-of-freedom damping connector; 241. Pull rod; 242. Pull rod support; 243. Spring; 244. Pressure sensor; 245. Antenna; 246. Battery; 247. LORA wireless communication interface; 248. MCU; 249. Data storage device; 251. Connecting rod; 252. Connecting rod support. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0030] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0031] Combination Figures 1 to 7 An intelligent protective device for an offshore photovoltaic array of the present invention comprises an anchoring device 1, an edge floating photovoltaic module 2 and a middle floating photovoltaic module 3; the edge floating photovoltaic module 2 and the middle floating photovoltaic module 3 are connected to form an offshore photovoltaic array, and the middle floating photovoltaic modules 3 are connected to each other and are located in the middle of the offshore photovoltaic array; the edge floating photovoltaic modules 2 are located at the outermost position of the edge of the offshore photovoltaic array, and are connected to each other to form a closed outer contour surrounding the middle floating photovoltaic modules 3; the offshore photovoltaic array is fixed on the sea surface by the anchoring device 1.

[0032] The anchoring device 1 includes a connecting cable 11 and a fixed anchor 12. One end of the connecting cable 11 is connected to the edge floating photovoltaic module 2 or the middle floating photovoltaic module 3 in the offshore photovoltaic array, and the other end is connected to the fixed anchor 12. The fixed anchor 12 is forged from cast steel and has a very large deadweight, and has the function of fixing the offshore photovoltaic array.

[0033] The edge floating photovoltaic assembly 2 includes a photovoltaic box 21 , edge baffles 22 , a middle baffle 23 , an offshore photovoltaic health sensor 24 and a multi-degree-of-freedom damping connector 25 . The lower part of the photovoltaic box 21 is a HDPE standard floating box, and the upper part is equipped with photovoltaic panels for power generation; the photovoltaic box 21 at the lower left corner has an offshore photovoltaic health sensor 24 installed on the left and lower sides and connected to the corner baffle 22, and a multi-degree-of-freedom damping connector 25 installed on the right and upper sides; the photovoltaic box 21 at the lower right corner has an offshore photovoltaic health sensor 24 installed on the right and lower sides and connected to the corner baffle 22, and a multi-degree-of-freedom damping connector 25 installed on the left and upper sides; the photovoltaic box 21 at the middle and lower edge position has an offshore photovoltaic health sensor 24 installed on the lower side and connected to the middle baffle 23, and a multi-degree-of-freedom damping connector 25 installed on the left, right and upper sides; the edge floating photovoltaic components 2 are connected to each other through the multi-degree-of-freedom damping connector 25 to form a closed outer contour surrounding the middle floating photovoltaic 3, and the edge is connected to the baffle through the offshore photovoltaic health sensor 24, forming a protective layer that reduces the impact load of floating objects and sea ice with waves as a whole.

[0034] The corner baffles 22 and the middle baffles 23 form a protective layer to reduce the impact load of floating objects and sea ice with waves, and the overall appearance is shown in the figure. The outer shell of the baffle has protrusions, is uneven, and forms an arc as a whole. When the waves hit, a large amount of turbulence will be generated, which has the effect of breaking the waves and reducing the direct impact of the waves.

[0035] The offshore photovoltaic health sensor 24 includes a tie rod 241, a tie rod support 242, a spring 243, a pressure sensor 244, an antenna 245, a battery 246, a LORA wireless communication interface 247, an MCU 248 and a data storage device 249. One end of the tie rod 241 is in the shape of a straight rod, and the other end is in the shape of an arc, with a spring groove on the upper part. One end of the tie rod support 242 is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end is hollow, and there is a notch on the top of the arc end. The arc end of the tie rod 241 is placed in the hollow of the arc end of the tie rod support 242, and the arc end of the tie rod 241 is larger than the notch size of the tie rod support 242, so that the tie rod 241 cannot fall off horizontally from the tie rod support 242. One end of the spring 243 is fixed to the arc end of the pull rod 241 at the arc surfaces of 0°, 60°, 120°, -60°, -120° and the upper spring groove. The other end of the 0° spring 243 is fixed to the pressure sensor 244. The other ends of the other springs 243 are fixed to the inner wall of the arc end of the pull rod support 242.

[0036] The pressure sensor 244, antenna 245, battery 246, LORA wireless communication interface 247, MCU248 and data storage 249 are respectively fixed in the hollow cavity of the tie rod support 242. The battery 246 provides stable energy for the entire device, and the pressure sensor 244 measures the pressure of the spring 243. The measured pressure data is processed by MCU248 and transmitted to the data storage 249 for storage. Researchers can conduct subsequent research based on the data therein. When the baffle is hit by floating ice or huge waves that exceed the safety range, it will bear a huge impact load, causing the baffle to be damaged. At this time, the pressure data of the spring for the pressure sensor will show a very high peak in a short period of time, and then the pressure data will remain at a low level and the periodic amplitude will decrease or disappear. When MCU248 detects that the pressure sensor presents this characteristic, it means that the baffle is damaged and the health of the photovoltaic array structure is damaged. The alarm signal is transmitted to the LORA wireless communication interface 247 and antenna 245, and the alarm signal is transmitted to the staff to realize the health warning function of the offshore photovoltaic array structure.

[0037] The multi-degree-of-freedom damping connector 25 is composed of a connecting rod 251, a spring 243 and a connecting rod support 252. One end of the connecting rod 251 is in the shape of a straight rod, and the other end is in the shape of an arc, and there is a spring groove on the arc end. One end of the connecting rod support 252 is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end is hollow, and there is a notch on the top of the arc end. The arc end of the connecting rod 251 is placed in the hollow arc end of the connecting rod support 252, and the arc end of the connecting rod 251 is larger than the notch size of the connecting rod support 252, so that the connecting rod 251 cannot fall off horizontally from the connecting rod support 252. One end of the spring 243 is fixed to the arc end of the pull rod at the arc surface of 0°, 60°, 120°, -60°, -120° and the upper spring groove position, and the other end of the spring 243 is fixed to the inner wall of the arc end of the connecting rod support 252. Compared with the traditional single-degree-of-freedom connector, the multi-degree-of-freedom damping connector 25 adopts a three-degree-of-freedom damping system, which reduces the lateral and tangential loads between the connectors and prolongs the service life of the connectors.

[0038] The stress state of the connector in the tangential and transverse directions is shown in formula (1). When the impact impulse I occurs in the conventional connector, due to the absence of a damping system, the stress time t is extremely short and the stress F is relatively large. Under the cyclic load of the wave, the connector is prone to fatigue failure in the tangential direction. The multi-degree-of-freedom damping connector 25 is longitudinally installed with a spring 243. When the impact impulse occurs, the stress time t is relatively long and the stress F is relatively small, thereby achieving the effect of energy dissipation and shock reduction.

[0039] I=Ft (1)

[0040] The longitudinal force formula of the traditional connector is shown in formula (2), and the force formula of the multi-degree-of-freedom damping connector 25 is shown in formula (3). It can be seen from the formula that when the impact load appears in the longitudinal direction of the traditional connector, the spring deformation is much greater than the deformation of the multi-degree-of-freedom damping connector 25. The multi-degree-of-freedom damping connector 25 can dissipate energy and reduce shock more efficiently, while reducing the deformation of the connector, so that when the photovoltaic array is subjected to impact loads, the energy is dissipated layer by layer, the overall structure of the photovoltaic array is maintained without large deformation, and the function of ensuring structural stability is achieved.

[0041] F=f 0o =kΔ 0o (2)

[0042] F=kΔ 0o +k(Δ -120o +Δ -60o +Δ 60o +Δ 120o ) / twenty three)

[0043] Where F is the impact load, k is the spring stiffness coefficient, Δ io For i o The spring deflection at the specified position.

[0044] The middle floating photovoltaic assembly 3 is composed of a photovoltaic box 21 and a multi-degree-of-freedom damping connector 25. The multi-degree-of-freedom damping connectors 2 are respectively installed on the upper, lower, left and right sides of the photovoltaic box 21. The middle floating photovoltaic assemblies 3 are connected to each other in the middle of the offshore photovoltaic array and are connected to the edge floating photovoltaic assemblies 2 to form an offshore photovoltaic array.

[0045] The present invention breaks through the limitations of traditional single-degree-of-freedom connectors of offshore photovoltaics through the multi-degree-of-freedom damping connector 25, solves the problems of fatigue of photovoltaic components, rupture of anti-corrosion coatings of traditional connectors and serious corrosion due to random wind and wave cyclic loads, and adopts a multi-degree-of-freedom damping system to reduce the impact of random impact loads generated by breaking waves and floating objects on offshore photovoltaic arrays, ensure the overall structural stability, and extend the service life of offshore photovoltaic array components; an offshore photovoltaic health sensor proposed by the present invention can measure the impact load borne by the baffle and perform edge computing analysis of the impact load to realize the photovoltaic array structure health early warning function; the baffle surface proposed by the present invention is uneven and the baffle adopts a parabolic arc shape as a whole. When the waves hit, a large amount of turbulence is formed to break the waves and reduce the impact load of the waves.

[0046] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. An intelligent protection device for an offshore photovoltaic array, characterized in that: It comprises an anchoring device (1), an edge floating photovoltaic module (2) and a middle floating photovoltaic module (3); The edge floating photovoltaic assembly (2) comprises a photovoltaic box (21), an edge baffle, an offshore photovoltaic health sensor (24) and a multi-degree-of-freedom damping connector (25); Edge baffles are arranged around the offshore photovoltaic array; the lower part of the photovoltaic box (21) is a HDPE standard floating box, and the upper part is equipped with photovoltaic panels for power generation; the photovoltaic box (21) at the edge is connected to the edge baffle via an offshore photovoltaic health sensor (24); adjacent photovoltaic boxes (21) are connected to each other via multi-degree-of-freedom damping connectors (25) to form a closed outer contour surrounding the middle floating photovoltaic assembly (3); The edge baffle comprises a corner baffle (22) and a middle baffle (23); the corner baffles (22) are arranged at four corners, and two adjacent corner baffles (22) are connected via the middle baffle (23); the baffle shells of the corner baffles (22) and the middle baffle (23) are both provided with a raised portion, the surface is uneven, and the overall cross-section is arc-shaped; The offshore photovoltaic health sensor (24) comprises a tie rod (241), a tie rod support (242), a spring (243) and a pressure sensor (244); One end of the pull rod (241) is in the shape of a straight rod, and the other end is in the shape of an arc, and a spring groove is provided on the arc end of the pull rod (241); One end of the pull rod support (242) is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end of the pull rod support (242) is hollow and is also provided with a notch; The pull rod (241) and the pull rod support (242) are arranged opposite to each other, the arc end of the pull rod (241) is placed in the hollow of the arc end of the pull rod support (242), and the diameter of the arc end of the pull rod (241) is larger than the width of the notch of the pull rod support (242). One end of the spring (243) is arranged in a spring groove on the arc surface of the arc end of the pull rod (241), and the spring (243) is arranged on the arc surfaces of 0°, 60°, 120°, -60°, and -120° on the arc end of the pull rod (241); the other end of the 0° spring (243) is fixedly connected to the pressure sensor (244), and the other ends of the other springs (243) are fixedly connected to the inner wall of the arc end of the pull rod support (242); A hollow cavity is also provided on the tie rod support (242), and the offshore photovoltaic health sensor (24) further comprises an antenna (245) arranged in the hollow cavity of the tie rod support (242), a battery (246), a LORA wireless communication interface (247), an MCU (248) and a data storage device (249); the pressure sensor (244) measures the pressure of the spring (243), and the measured pressure data is processed by the MCU (248) and transmitted to the data storage device (249) for storage; when the MCU (248) detects that the pressure sensor (244) is abnormal, an alarm signal is transmitted to the LORA wireless communication interface (247) and the antenna (245), thereby realizing an alarm function.

2. The intelligent protection device for offshore photovoltaic arrays according to claim 1, characterized in that: The anchoring device (1) comprises a connecting cable (11) and a fixed anchor (12); one end of the connecting cable (11) is connected to an edge floating photovoltaic assembly (2) or a middle floating photovoltaic assembly (3); and the other end of the connecting cable (11) is connected to the fixed anchor (12).

3. The intelligent protection device for offshore photovoltaic array according to claim 1, characterized in that: The multi-degree-of-freedom damping connecting member (25) comprises a connecting rod (251), a spring (243) and a connecting rod support (252); one end of the connecting rod (251) is in the shape of a straight rod, and the other end is in the shape of an arc, and a spring groove is provided on the arc end of the connecting rod (251); One end of the connecting rod support (252) is in the shape of a straight rod, and the other end is in the shape of an arc, and the arc end of the connecting rod support (252) is hollow and is also provided with a notch; The connecting rod (251) and the connecting rod support (252) are arranged opposite to each other, the arc end of the connecting rod (251) is placed in the hollow of the arc end of the connecting rod support (252), and the diameter of the arc end of the connecting rod (251) is greater than the width of the notch of the connecting rod support (252). One end of the spring (243) is arranged in a spring groove on the arc surface of the arc end of the connecting rod (251), and the spring (243) is arranged on the arc surfaces of 0°, 60°, 120°, -60°, and -120° on the arc end of the connecting rod (251); the other end of the spring (243) is fixedly connected to the inner wall of the arc end of the connecting rod support (252).

4. The intelligent protection device for offshore photovoltaic arrays according to claim 3 is characterized in that: The force formula of the multi-degree-of-freedom damping connector (25) is as shown in the formula: F=kΔ 0° +k(D -120° +D -60° +D 60° +D 120° ) / 2 Where F is the impact load, k is the spring stiffness coefficient, Δ i° is the spring deformation at position i°.

5. The intelligent protection device for offshore photovoltaic array according to claim 1, characterized in that: The intermediate floating photovoltaic assembly (3) comprises a photovoltaic box (21) and a multi-degree-of-freedom damping connector (25); adjacent photovoltaic boxes (21) are connected to each other via the multi-degree-of-freedom damping connector (25) and are located in the middle of an offshore photovoltaic array, and are connected to the edge floating photovoltaic assemblies (2) via the multi-degree-of-freedom damping connector (25) to form an offshore photovoltaic array.

6. The intelligent protection device for offshore photovoltaic array according to claim 2, characterized in that: The fixing anchor (12) is forged from cast steel.

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