A floating photovoltaic protection device with intelligent early warning

Abstract

The present invention relates to a floating photovoltaic protection device with intelligent early warning in photovoltaic engineering, and belongs to the field of floating photovoltaic health monitoring technology. The device is composed of an anchoring device, a floating photovoltaic protection device, and an early warning circuit system. The protective plates are connected to each other through connecting ropes to form a closed outer contour surrounding the middle floating photovoltaic array, protecting the floating photovoltaic array inside. The peripheral circuit of the early warning circuit system is arranged along the outer contour. Only when the floating photovoltaic protection device is damaged, the peripheral circuit will be damaged to cause a circuit break or a significant drop in current, and the alarm circuit will be closed to send an early warning signal to the staff. The device has a simple structure and low cost. It not only improves the resistance of the floating photovoltaic array to the impact of waves and floating ice, but also can provide intelligent early warning for the structural health of the floating photovoltaic, allowing the staff to maintain the health of the floating photovoltaic structure in time, effectively ensuring the benefits of the floating photovoltaic project and extending the service life of the floating photovoltaic array.

Description

Technical Field

[0001] The invention belongs to the technical field of health detection of offshore photovoltaic power stations, and in particular relates to a floating photovoltaic protection device with intelligent early warning. Background Art

[0002] As land-based photovoltaic land is gradually reduced, offshore photovoltaics are gradually gaining attention from the new energy industry. Because floating photovoltaics are on the water, unlike traditional photovoltaics, there are no obstacles around them that affect the efficiency of photovoltaic power generation. The efficiency of floating photovoltaics far exceeds that of traditional photovoltaics. Therefore, floating photovoltaics have become an important area for the development of the photovoltaic industry in the future.

[0003] However, floating photovoltaics also face problems that traditional photovoltaics have never faced. Due to the limitations of the applicable environment of floating photovoltaics, floating photovoltaics will face more complex and harsh environmental loads. For example, the sea surface north of the East China Sea in my country often freezes in winter, and there are potential dangers such as floating ice hitting floating photovoltaics; storms will occur in the rainy season in the South China Sea, and the wave height often exceeds 8m. The impact of waves will impose random cyclic wind and wave loads on the overall structure of floating photovoltaics; these problems will pose safety risks to the overall structure of floating photovoltaics. In response to these problems, researchers have proposed protective measures such as setting up baffles around floating photovoltaics or modifying floating photovoltaic structures. However, at present, when the photovoltaic array is damaged, the staff has no way to grasp the health status of the photovoltaic array in time, which is bound to lead to subsequent damage to the photovoltaic array and affect the benefits of floating photovoltaic projects.

[0004] In response to the issue of floating photovoltaic structure safety, the present invention proposes a floating photovoltaic protection device with intelligent early warning. While providing protection measures for floating photovoltaics, it can also provide intelligent early warning for the structural health of floating photovoltaics, allowing staff to maintain the health of the floating photovoltaic structure in a timely manner, effectively ensuring the benefits of the floating photovoltaic project and extending the service life of the floating photovoltaic array. Summary of the invention

[0005] The purpose of the present invention is to propose a floating photovoltaic protection device with intelligent early warning for the health condition of floating photovoltaic structures. The device can better solve the problem of intelligent early warning of the protection device when the floating photovoltaic array is subjected to impact loads leading to early structural damage, thereby facilitating the timely maintenance of the floating photovoltaic array, extending the service life and service life of the floating photovoltaic project to a certain extent, and improving the enterprise benefits.

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

[0007] A floating photovoltaic protection device with intelligent early warning comprises an anchoring device, a floating photovoltaic protection device, an early warning circuit system and a floating photovoltaic array; the floating photovoltaic protection device is arranged around the floating photovoltaic array to protect the floating photovoltaic array, and the floating photovoltaic array and the floating photovoltaic protection device are both connected to the anchoring device; the early warning circuit system is arranged on the floating photovoltaic array to warn of damage to the floating photovoltaic protection device.

[0008] As a further preferred embodiment of the present invention, the anchoring device includes an anchor cable and a fixed anchor; one end of the anchor cable is connected to the floating photovoltaic protection device or the floating photovoltaic array, and the other end is connected to the fixed anchor.

[0009] As a further preferred embodiment of the present invention, the floating photovoltaic protection device includes a protection plate and a connecting cable; two adjacent protection plates are connected by the connecting cable to form a closed outer contour surrounding the floating photovoltaic array.

[0010] As a further preferred embodiment of the present invention, the protective plate is provided with protrusions and holes, which can effectively break the waves and consume the impact energy of the waves.

[0011] As a further preferred embodiment of the present invention, the warning circuit system comprises internal wires, a relay, an MCU, a LORA wireless communication interface, an antenna, a battery and external wires; the external wires run through the middle of each protective plate, and the external wires are connected to the relay (33) and the battery; the battery, the relay, the MCU, the LORA wireless communication interface and the antenna are connected in sequence through the internal wires.

[0012] As a further preference of the present invention, the early warning circuit system also includes an early warning circuit central shell, and the internal wires, relays, MCU, LORA wireless communication interface, antenna and battery are all arranged in the early warning circuit central shell; the external wires are arranged outside the early warning circuit central shell.

[0013] As a further preferred embodiment of the present invention, the protection plates include four corner protection plates and edge protection plates; the four corner protection plates are arranged at the four corners of the floating photovoltaic array, and the four corner protection plates are connected to the edge protection plates through connecting cables.

[0014] As a further preferred embodiment of the present invention, the connecting ropes are connected to the four corners of the four-corner protection plate sections and the edge protection plate sections.

[0015] As a further preferred embodiment of the present invention, the floating photovoltaic array includes photovoltaic floating panels and flexible connectors; adjacent photovoltaic floating panels are connected by the flexible connectors, and the photovoltaic floating panels at the edges are connected to the protective panels by the flexible connectors.

[0016] As a further preferred embodiment of the present invention, the material of the four corner protection plates and the edge protection plates is UPE board.

[0017] The present invention has the following beneficial effects:

[0018] Compared with the prior art, the advantages of the present invention are: a floating photovoltaic protection device with intelligent early warning proposed by the present invention breaks through the limitations of traditional floating photovoltaic protection parts by installing an intelligent early warning circuit system on the floating photovoltaic protection parts, and solves the function of timely early warning when the floating photovoltaic protection parts are damaged under the action of impact loads or wind and wave cyclic loads; traditional floating photovoltaics do not care about the use of protection parts or ignore the early warning function of protection parts in floating photovoltaic arrays. The present invention integrates the structural safety of floating photovoltaic protection parts with the structural safety of floating photovoltaic arrays. Due to the fragility of floating photovoltaic arrays in complex and harsh environments at sea, when floating photovoltaic protection parts are damaged, the destruction of the floating photovoltaic array will soon occur. Therefore, by monitoring the damage of floating photovoltaic protection parts, the structural health of the floating photovoltaic array can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the device;

[0020] Figure 2 is a schematic diagram of the anchoring device;

[0021] Figure 3 It is a schematic diagram of the structure of a floating photovoltaic protection device;

[0022] Figure 4 It is a schematic diagram of the floating photovoltaic edge structure;

[0023] Figure 5 This is a schematic diagram of the internal structure of the intelligent early warning device;

[0024] Figure 6 This is a schematic diagram of the floating photovoltaic module structure;

[0025] Figure 7 This is a schematic diagram of the early warning circuit.

[0026] Among them are: 1. Anchoring device; 2. Floating photovoltaic protection device; 3. Early warning circuit system; 4. Floating photovoltaic array; 11. Anchor cable; 12. Fixed anchor; 21. Four-corner protection plate; 22. Edge protection plate; 23. Connecting cable; 31. Internal wires; 32. Early warning circuit central shell; 33. Relay; 34. MCU; 35. LORA wireless communication interface; 36. Antenna; 37. Battery; 38. External wires; 41. Photovoltaic floating panel; 42. Flexible connector. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0028] 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.

[0029] Combination Figures 1 to 7 The present invention provides a floating photovoltaic protection device with intelligent early warning, comprising an anchoring device 1, a floating photovoltaic protection device 2 and an early warning circuit system 3. The floating photovoltaic array 4 is located at the center of the floating photovoltaic protection device with intelligent early warning, and the floating photovoltaic protection device 2 is located at the edges of the floating photovoltaic array 4. The floating photovoltaic array 4 is connected to each other through a connecting rope 23 to form a closed outer contour surrounding the floating photovoltaic array 4 in the middle, protecting the floating photovoltaic array 4 inside, and the floating photovoltaic array 4 and the floating photovoltaic protection device 2 are fixed on the sea surface through the anchoring device 1.

[0030] The anchoring device 1 includes an anchor cable 11 and a fixed anchor 12, one end of the anchor cable 11 is connected to the fixed anchor 12; the other end is connected to the floating photovoltaic array 4 or the floating photovoltaic protection device 2; wherein the anchor cable 11 and the fixed anchor 12 are made of cast steel to fix the floating photovoltaic array 4 at sea.

[0031] The floating photovoltaic protection device 2 is composed of four corner protection plates 21, edge protection plates 22 and connecting cables 23. The four corner protection plates 21 and edge protection plates 22 are made of UPE board material, which has the advantages of impact resistance, wear resistance, corrosion resistance, aging resistance, etc., and the surface is provided with protrusions and random holes, which can effectively break the waves and consume the impact energy of the waves; the four corner protection plates 21 and edge protection plates 22 are connected together by connecting cables 23, and the connecting cables 23 are connected at the upper right, lower right, upper left and lower left corners of the side of the protection plates respectively. The protection plates are connected to each other through the connecting cables 23 to form a closed outer contour surrounding the middle floating photovoltaic array 4, and the overall protective layer is formed to reduce the impact load of the waves.

[0032] The warning circuit system 3 includes internal wires 31, a warning circuit central housing 32, a relay 33, an MCU 34, a LORA wireless communication interface 35, an antenna 36, ​​a battery 37 and external wires. The external wires 38 outside the warning circuit central housing 32 are connected with the through holes in the center of the four corner protection plates 21 and the edge protection plates 22 in the floating photovoltaic protection device 2 to form a circle. At the same time, a certain redundancy is left in the external wires 38. When the floating photovoltaic protection device 2 is deformed by an impact load, the external wires 38 do not bear or only bear a small tensile force, ensuring that the external wires 38 will only be damaged when the structure of the floating photovoltaic protection device 2 is damaged, such as the protection plate is damaged, the connecting rope 23 is broken, and other situations. That is, only when the floating photovoltaic protection device 2 is structurally damaged and loses the preset protection capability for the floating photovoltaic array 4, the external wires 38 may be damaged, disconnected or the current is reduced to a range below the preset value.

[0033] The central shell 32 of the early warning circuit is made of UPE material, and the internal device is set as shown in the figure. The battery 37 is used to power the entire early warning circuit system; the MCU 34, the LORA wireless communication interface 35, and the antenna 36 are connected in series through the wires 31 inside the central shell 32 of the early warning circuit, and form an alarm circuit with the relay 33 and the battery 37; the external wires 38 outside the central shell 32 of the early warning circuit form a peripheral circuit with the relay 33 and the power supply 37. The relay 33 is used to control the circuit. In the initial stage, the peripheral circuit is a closed loop, connected to the power supply, and the alarm circuit is disconnected at the relay 33, which is not a closed loop. When the peripheral circuit is disconnected or the current value is less than the preset value, it means that the floating photovoltaic protection device 2 is damaged. At this time, the relay 33 automatically closes the alarm circuit switch and connects the alarm circuit. MCU34 has the function of controlling the transmission of alarm signals. When MCU34 is powered on, it controls the LORA wireless communication interface 35 and the antenna 36 to transmit alarm signals to external staff, reminding them to come and repair the floating photovoltaic protection device 2 and the early warning circuit system 3: replace damaged components in the floating photovoltaic protection device 2, reconnect the peripheral circuits in the early warning circuit system 3, disconnect the alarm circuit, etc.; and evaluate the safety of the floating photovoltaic array 4 to decide whether to repair it.

[0034] The floating photovoltaic array 4 includes a photovoltaic floating board 41 and a flexible connector 42. The flexible connectors 42 are installed on both sides of the front, rear, left and right sides of the photovoltaic floating board 41, and the floating photovoltaic array is formed by the flexible connectors 42. The photovoltaic floating board 41 is connected to the contact edge of the protective plate through the flexible connector 42. One end of the flexible connector 42 is fixed to the photovoltaic floating board, and the other end is fixed to the corresponding protective plate. The flexible connectors 42 are installed on both sides of the front, rear, left and right sides of the early warning circuit central housing 32, respectively, and are located at the edge of the floating photovoltaic array 4. One side is connected to the edge protective plate 22 through the flexible connector 42, and the other three sides are connected to the photovoltaic floating board 41 through the flexible connector 42.

[0035] The present invention proposes a floating photovoltaic protection device with intelligent early warning. By installing an intelligent early warning circuit system on the floating photovoltaic protection element, it breaks through the limitations of the traditional floating photovoltaic protection element and solves the problem of timely early warning when the floating photovoltaic protection element is damaged under the action of impact load or wind and wave cyclic load. The traditional floating photovoltaic does not care about the use of protection elements or ignores the early warning function of protection elements in the floating photovoltaic array. The present invention integrates the structural safety of the floating photovoltaic protection element with the structural safety of the floating photovoltaic array. Due to the fragility of the floating photovoltaic array in the complex and harsh environment at sea, when the floating photovoltaic protection element is damaged, the destruction of the floating photovoltaic array will soon occur. Therefore, by monitoring the damage of the floating photovoltaic protection element, the structural health of the floating photovoltaic array can be guaranteed.

[0036] 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. A floating photovoltaic protection device with intelligent early warning, characterized in that: The invention comprises an anchoring device (1), a floating photovoltaic protection device (2), an early warning circuit system (3) and a floating photovoltaic array (4); the floating photovoltaic protection device (2) is arranged around the floating photovoltaic array (4) to protect the floating photovoltaic array (4), and the floating photovoltaic array (4) and the floating photovoltaic protection device (2) are both connected to the anchoring device (1); the early warning circuit system (3) is arranged on the floating photovoltaic array (4) to warn of damage to the floating photovoltaic protection device (2); The floating photovoltaic protection device (2) comprises a protection plate and a connecting cable (23); two adjacent protection plates are connected by the connecting cable (23) to form a closed outer contour surrounding the floating photovoltaic array (4); The warning circuit system (3) includes an internal wire (31), a relay (33), an MCU (34), a LORA wireless communication interface (35), an antenna (36), a battery (37), and an external wire (38); the external wire (38) runs through the middle of each protective plate, and the external wire (38) is connected to the relay (33) and the battery (37); the battery (37), the relay (33), the MCU (34), the LORA wireless communication interface (35), and the antenna (36) are connected in sequence through the internal wire (31); The early warning circuit system (3) further comprises an early warning circuit central housing (32), wherein the internal wires (31), relays (33), MCU (34), LORA wireless communication interface (35), antenna (36) and battery (37) are all arranged inside the early warning circuit central housing (32); and the external wires (38) are arranged outside the early warning circuit central housing (32).

2. According to claim 1, a floating photovoltaic protection device with intelligent early warning is characterized in that: The anchoring device (1) comprises an anchor cable (11) and a fixed anchor (12); one end of the anchor cable (11) is connected to the floating photovoltaic protection device (2) or the floating photovoltaic array (4), and the other end is connected to the fixed anchor (12).

3. According to claim 1, a floating photovoltaic protection device with intelligent early warning is characterized in that: The protective plate is provided with protrusions and holes, which can effectively break the waves and consume the impact energy of the waves.

4. The intelligent early warning floating photovoltaic protection device according to claim 1 is characterized in that: The protection plates comprise four corner protection plates (21) and edge protection plates (22); the four corner protection plates (21) are arranged at four corners of the floating photovoltaic array (4), and the four corner protection plates (21) are connected to the edge protection plates (22) via connection cables (23).

5. The intelligent early warning floating photovoltaic protection device according to claim 4 is characterized in that: The connecting rope (23) is connected to the four corners of the cross section of the four corner protection plates (21) and the four corner protection plates (22).

6. The intelligent early warning floating photovoltaic protection device according to claim 1 is characterized in that: The floating photovoltaic array (4) comprises a photovoltaic floating panel (41) and a flexible connector (42); adjacent photovoltaic floating panels (41) are connected via the flexible connector (42), and the photovoltaic floating panels (41) at the edge are connected to the protective panel via the flexible connector (42).

7. The intelligent early warning floating photovoltaic protection device according to claim 4 is characterized by: The four corner protection plates (21) and the edge protection plates (22) are made of UPE plates.

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