Intelligent cable for photovoltaic power station

Abstract

The invention relates to an intelligent cable for a photovoltaic power station, which is applied to the technical field of cables, and comprises a cable body, a loss monitoring and intelligent alarm mechanism and a loss monitoring and intelligent control system, the loss monitoring and intelligent alarm mechanism comprises a same-loss pseudo-inspection sleeve, the material of the same-loss pseudo-inspection sleeve is the same as that of a sheath layer, and the thickness of the same-loss pseudo-inspection sleeve is smaller than that of the sheath layer; the inner side of the same-loss pseudo-inspection sleeve is fixedly provided with an end sealing middle transparent piece matched with the same-loss pseudo-inspection sleeve, the end sealing middle transparent piece comprises a pair of end sealing circular plates, a middle breathable cylinder is fixedly connected between the pair of end sealing circular plates, and one end sealing circular plate is fixedly provided with an outer air pressure sensor and an inner air pressure sensor; through the arrangement of the damage monitoring and intelligent alarm mechanism and the damage monitoring and intelligent control system, the damage monitoring and intelligent alarm mechanism can indirectly monitor the damage condition of the sheath layer by monitoring the damage condition of the same-damage to-be-detected sleeve, and can carry out early warning in advance when the sheath layer has a damage risk, thereby greatly improving the safety of the cable. And the stable operation of the photovoltaic power station can be powerfully ensured.

Description

Technical Field

[0001] The present invention relates to an intelligent cable, in particular to an intelligent cable for a photovoltaic power generation station applied in the field of cable technology. Background Art

[0002] With the surging global demand for clean energy, the construction scale of photovoltaic power generation stations has been continuously expanding. As an important component connecting key devices such as photovoltaic panels, inverters, transformers, and power grids in a photovoltaic power generation station, the performance of the cable directly affects the overall efficiency and stability of the power generation station.

[0003] Chinese Patent with Publication No. CN118315111B discloses a photovoltaic cable for photovoltaic power generation. The outer sheath of the photovoltaic cable prepared by the method of silane cross-linked polyolefin of this invention not only has a lasting anti-rat and anti-termite effect, but also has excellent flame retardant performance, mechanical properties and aging resistance.

[0004] Chinese Patent with Publication No. CN112397247B discloses a photovoltaic cable for a new energy photovoltaic power generation station. This invention has a good self-cooling effect, is easy to use, is convenient to utilize rainwater to cool the outside and inside of the cable, improves the self-cooling effect, and has strong extrusion resistance.

[0005] Since photovoltaic power generation stations are usually located outdoors and mostly in sunny areas, the cables used in photovoltaic power generation stations will be exposed to relatively strong sunlight for a long time. Ultraviolet rays will cause the sheath layer of the cable to age and crack. Once the sheath layer is damaged, the internal insulation and conductor will be directly exposed to the external environment, greatly affecting the safety of the cable. However, the existing cables for photovoltaic power generation stations generally do not have corresponding monitoring and warning mechanisms and cannot give early warnings before the sheath layer is damaged, so the safety is relatively low. Therefore, we propose an intelligent cable for a photovoltaic power generation station. Summary of the Invention

[0006] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing cables for photovoltaic power generation stations generally do not have corresponding monitoring and warning mechanisms and cannot give early warnings before the sheath layer is damaged, so the safety is relatively low.

[0007] To solve the above problems, the present invention provides an intelligent cable for a photovoltaic power station, which includes a cable body, a damage monitoring and warning mechanism, and a monitoring and warning intelligent control system. The cable body includes a conductor, an insulating layer, a shielding layer, and a sheath layer arranged in sequence from inside to outside. The damage monitoring and warning mechanism includes a same-damage simulation inspection sleeve fixedly connected to the cable body. The material of the same-damage simulation inspection sleeve is the same as that of the sheath layer, and the thickness of the same-damage simulation inspection sleeve is less than that of the sheath layer. An end-sealing middle-permeable member matching it is fixedly installed inside the same-damage simulation inspection sleeve. The end-sealing middle-permeable member includes a pair of end-sealing circular plates. A middle air-permeable cylinder is fixedly connected between the pair of end-sealing circular plates. The middle air-permeable cylinder is a breathable multi-porous network structure. Both of the pair of end-sealing circular plates are hermetically and fixedly connected to the same-damage simulation inspection sleeve. An external air pressure sensor and an internal air pressure sensor are fixedly installed on one of the end-sealing circular plates. The external air pressure sensor and the internal air pressure sensor are respectively located on the left and right sides of the end-sealing circular plate. The monitoring and warning intelligent control system includes a damage monitoring analysis module and a remote warning module. The external air pressure sensor and the internal air pressure sensor are both signal-connected to the damage monitoring analysis module. The damage monitoring analysis module is signal-connected to the remote warning module.

[0008] In the above intelligent cable for a photovoltaic power station, the damage monitoring and warning mechanism can indirectly monitor the damage condition of the sheath layer by monitoring the damage condition of the same-damage simulation inspection sleeve, and can give an early warning when there is a risk of damage to the sheath layer, thereby greatly improving the safety of the cable.

[0009] As a further improvement of the present application, sealing rings are hermetically and fixedly connected to both ends of the same-damage simulation inspection sleeve. The two sealing rings are respectively hermetically and fixedly connected to the two end-sealing circular plates, and the inner diameter of the sealing ring is less than the diameter of the end-sealing circular plate.

[0010] As another improvement of the present application, the damage monitoring and warning mechanism further includes a simulated heat-assisted monitoring component. The simulated heat-assisted monitoring component includes a heat storage support box. The top end of the heat storage support box is open. A heat storage body is filled in the heat storage support box. A heat collection plate matching it is fixedly installed inside the top end of the heat storage body. A heat storage conduction rod is fixedly installed at the bottom end of the heat collection plate. An adjustable heat conduction member is thermally connected between the inside of the end-sealing middle-permeable member and the heat storage body.

[0011] As a supplement to another improvement of the present application, the heat storage support box is made of a heat-insulating material, the heat storage body is made of a phase change heat storage material, the upper surface of the heat collection plate is coated with a solar heat absorption coating, the heat collection plate and the heat storage conduction rod are both made of heat-conducting materials, and the bottom end of the heat storage conduction rod is embedded in the heat storage body.

[0012] As a supplement to another improvement of the present application, the adjustable heat conduction member includes a connecting box heat conduction rod penetrating and embedded on the outer wall of the heat storage support box, and a connecting sleeve heat conduction rod penetrating and embedded on the end-sealing circular plate and matching the connecting box heat conduction rod. The connecting box heat conduction rod and the connecting sleeve heat conduction rod are both made of heat-conducting materials. One end of the connecting box heat conduction rod is embedded in the heat storage body, and the other end of the connecting box heat conduction rod abuts against the connecting sleeve heat conduction rod.

[0013] As a supplement to another improvement of the present application, a vertical plate is fixedly installed inside the middle air cylinder. A conduction-breaking adjusting member is fixedly installed on the vertical plate. One end of the conduction-breaking adjusting member away from the vertical plate is fixedly connected to a conduction-breaking cylinder that matches the sleeve heat-conducting rod. One end of the conduction-breaking cylinder close to the sleeve heat-conducting rod is arranged in an open shape, and the conduction-breaking cylinder is made of heat-insulating material. The conduction-breaking adjusting member is made of shape memory alloy material. The conduction-breaking adjusting member is in the low-temperature phase shape, and the length of the high-temperature phase shape of the conduction-breaking adjusting member is greater than the length of its low-temperature phase shape. The phase change temperature of the conduction-breaking adjusting member is 40-60 °C.

[0014] As a supplement to another improvement of the present application, a temperature sensor is fixedly installed inside the middle air cylinder. The thermal assistance monitoring component further includes a cross plate fixedly installed on the end-sealing circular plate. An electric push rod is fixedly installed on the cross plate. The output end of the electric push rod is fixedly connected to the heat storage support box through a linkage rod. The monitoring and warning intelligent control system further includes an overheat adjustment module and a threshold setting module. The temperature sensor and the threshold setting module are both in signal connection with the overheat adjustment module. The overheat adjustment module is in signal connection with the electric push rod.

[0015] As a supplement to another improvement of the present application, the adjustable heat-conducting member further includes an upper heat-insulating sleeve and a lower heat-insulating sleeve that are movably sleeved on the connecting box heat-conducting rod. Both the upper heat-insulating sleeve and the lower heat-insulating sleeve are arranged in a semi-circular tubular shape that matches the connecting box heat-conducting rod. The upper heat-insulating sleeve is located above the lower heat-insulating sleeve. One end of the upper heat-insulating sleeve is fixedly connected to the heat storage support box and the other end abuts against the end-sealing circular plate. One end of the lower heat-insulating sleeve is fixedly connected to the end-sealing circular plate and the other end abuts against the heat storage support box. Both the upper heat-insulating sleeve and the lower heat-insulating sleeve are made of heat-insulating material.

[0016] As a supplement to another improvement of the present application, a light intensity sensor and a support plate are fixedly installed on the outer wall of the heat storage support box. An adjustment motor is fixedly installed on the support plate. The output end of the adjustment motor is fixedly connected to a heat-insulating cover plate that matches the heat storage support box through a connecting rod. The heat-insulating cover plate is made of heat-insulating material. The monitoring and warning intelligent control system further includes a heat storage adjustment module. The light intensity sensor and the threshold setting module are both in signal connection with the heat storage adjustment module. The heat storage adjustment module is in signal connection with the adjustment motor.

[0017] In summary, through the settings of the damage monitoring intelligent warning mechanism and the monitoring and warning intelligent control system in this application, the damage monitoring intelligent warning mechanism can indirectly monitor the damage condition of the sheath layer by monitoring the damage condition of the same-damage quasi-inspection sleeve, and can give an early warning when there is a risk of damage to the sheath layer, thereby greatly improving the safety of the cable and effectively ensuring the stable operation of the photovoltaic power station; through the setting of the quasi-thermal assistance monitoring component, the quasi-thermal assistance monitoring component can cleverly utilize the environmental characteristics of the area where the photovoltaic power station is located. Through the setting of the quasi-thermal assistance monitoring component, the quasi-thermal assistance monitoring component can cleverly utilize the environmental characteristics of the area where the photovoltaic power station is located, convert solar energy into heat energy and transfer it to the inner side of the same-damage quasi-inspection sleeve to simulate the heat generated during the operation of the cable, so that the same-damage quasi-inspection sleeve can more accurately simulate the sheath layer, and further improve the accuracy and reliability of monitoring and warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the first embodiment of this application; Figure 2 is a cross-sectional structural schematic diagram of the same-damage quasi-inspection sleeve in the first embodiment of this application; Figure 3 is a structural block diagram of the monitoring and warning intelligent control system in the first embodiment of this application; Figure 4 is a three-dimensional structural schematic diagram of the second embodiment of this application; Figure 5 is a three-dimensional structural schematic diagram of another angle of the second embodiment of this application; Figure 6 is a cross-sectional structural schematic diagram of the same-damage quasi-inspection sleeve in the second embodiment of this application; Figure 7 is a cross-sectional structural schematic diagram of the heat storage support box in the second embodiment of this application; Figure 8 is a side view cross-sectional structural schematic diagram of the adjustable heat conducting member in the second embodiment of this application; Figure 9 is a structural block diagram of the monitoring and warning intelligent control system in the second embodiment of this application.

[0019] Explanation of the reference numerals in the drawings: 001. Cable body; 201. Loss-simulation inspection sleeve; 202. External air pressure sensor; 203. Internal air pressure sensor; 204. Sealing ring; 301. Sealing end circular plate; 302. Middle air permeable cylinder; 401. Heat storage support box; 402. Heat storage body; 403. Heat collecting plate; 404. Heat storage guiding rod; 405. Vertical plate; 406. Conductivity-breaking adjusting part; 407. Conductivity-breaking cylinder; 408. Temperature sensor; 409. Horizontal plate; 410. Electric push rod; 411. Linking rod; 412. Light intensity sensor; 413. Support plate; 414. Adjusting motor; 415. Heat preservation cover plate; 005. Adjustable heat conducting part; 501. Connecting box heat conducting rod; 502. Connecting sleeve heat conducting rod; 503. Upper heat preservation sleeve; 504. Lower heat preservation sleeve. Specific embodiments

[0020] The following describes in detail two embodiments of the present application with reference to the accompanying drawings.

[0021] The first embodiment: Figures 1-3 An intelligent cable for a photovoltaic power station is shown, including a cable body 001, a loss monitoring and warning mechanism, and a monitoring and warning intelligent control system. The cable body 001 includes a conductor, an insulating layer, a shielding layer, and a sheath layer arranged in sequence from inside to outside. The loss monitoring and warning mechanism includes a loss-simulation inspection sleeve 201 fixedly connected to the cable body 001. The material of the loss-simulation inspection sleeve 201 is the same as that of the sheath layer, and the thickness of the loss-simulation inspection sleeve 201 is less than that of the sheath layer. An end-sealing and middle-air-permeable member is fixedly installed inside the loss-simulation inspection sleeve 201. The end-sealing and middle-air-permeable member includes a pair of sealing end circular plates 301. A middle air permeable cylinder 302 is fixedly connected between the pair of sealing end circular plates 301. The middle air permeable cylinder 302 is a breathable multi-porous network structure. Both of the pair of sealing end circular plates 301 are hermetically and fixedly connected to the loss-simulation inspection sleeve 201. An external air pressure sensor 202 and an internal air pressure sensor 203 are fixedly installed on one of the sealing end circular plates 301. The external air pressure sensor 202 and the internal air pressure sensor 203 are respectively located on the left and right sides of the sealing end circular plate 301. The monitoring and warning intelligent control system includes a loss monitoring analysis module and a remote warning module. The external air pressure sensor 202 and the internal air pressure sensor 203 are both signal-connected to the loss monitoring analysis module. The loss monitoring analysis module is signal-connected to the remote warning module.

[0022] The same-damage simulation inspection sleeve 201 is used to simulate the sheath layer. The same-damage simulation inspection sleeve 201 is in the same environment as the sheath layer, and the erosion it receives from the environment is the same as that of the sheath layer. Moreover, since the material of the same-damage simulation inspection sleeve 201 is the same as that of the sheath layer, the damage of the sheath layer can be indirectly monitored by monitoring whether the same-damage simulation inspection sleeve 201 is damaged. Also, since the same-damage simulation inspection sleeve 201 is thinner than the sheath layer, the damage of the same-damage simulation inspection sleeve 201 will occur earlier than that of the sheath layer. Therefore, when it is monitored that the same-damage simulation inspection sleeve 201 is damaged, an early warning is given, which can achieve the effect of early warning when there is a risk of damage to the sheath layer. The internal air pressure sensor 203 is used to monitor the air pressure inside the same-damage simulation inspection sleeve 201, and the external air pressure sensor 202 is used to monitor the ambient air pressure. Moreover, the air pressures monitored by the external air pressure sensor 202 and the internal air pressure sensor 203 are transmitted to the damage monitoring and analysis module in real time. The damage monitoring and analysis module is used to judge whether the same-damage simulation inspection sleeve 201 is damaged by analyzing the air pressure data monitored by the external air pressure sensor 202 and the internal air pressure sensor 203. Under the action of the two sealing end plates 301, the inside of the same-damage simulation inspection sleeve 201 is in a sealed state. Due to reasons such as continuous temperature changes, the air pressure inside the same-damage simulation inspection sleeve 201 will change continuously, but the ambient air pressure is relatively stable, resulting in an air pressure difference between the inside and outside of the same-damage simulation inspection sleeve 201. Therefore, if the same-damage simulation inspection sleeve 201 is not damaged, there will be a certain difference in the air pressure data monitored by the external air pressure sensor 202 and the internal air pressure sensor 203. On the contrary, when the same-damage simulation inspection sleeve 201 is damaged, air can flow in and out through the damaged part, balancing the air pressure inside and outside the same-damage simulation inspection sleeve 201, causing the air pressure difference between the inside and outside of the same-damage simulation inspection sleeve 201 to gradually decrease and approach zero, and the difference between the air pressure data monitored by the external air pressure sensor 202 and the internal air pressure sensor 203 will also gradually decrease and approach zero. Therefore, the damage monitoring and analysis module judges whether the same-damage simulation inspection sleeve 201 is damaged by analyzing the air pressure data monitored by the external air pressure sensor 202 and the internal air pressure sensor 203; When the judgment result of the damage monitoring and analysis module is that the same-damage simulation inspection sleeve 201 is damaged, the damage monitoring and analysis module will control the remote warning module to send an alarm signal to relevant technical personnel for early warning. When the same-damage simulation inspection sleeve 201 is damaged, it means that there is a risk of damage to the sheath layer; therefore, through the setting of the damage monitoring and intelligent warning mechanism and the monitoring and intelligent control system, the damage monitoring and intelligent warning mechanism can indirectly monitor the damage of the sheath layer by monitoring the damage of the same-damage simulation inspection sleeve 201, and can give an early warning when there is a risk of damage to the sheath layer, thereby greatly improving the safety of the cable and then effectively ensuring the stable operation of the photovoltaic power station.

[0023] Both ends of the same-loss simulation inspection sleeve 201 are hermetically and fixedly connected with sealing rings 204. The two sealing rings 204 are respectively hermetically and fixedly connected with two end-sealing circular plates 301. The inner diameter of the sealing ring 204 is smaller than the diameter of the end-sealing circular plate 301. The sealing ring 204 can improve the sealing performance at the connection between the end-sealing circular plate 301 and the same-loss simulation inspection sleeve 201, and improve the reliability of monitoring and early warning.

[0024] The second implementation mode: Figures 4-9 There is shown an intelligent cable for a photovoltaic power station. Different from the first implementation mode, the loss monitoring and intelligent warning mechanism further includes a simulated heat-assisted monitoring component. The simulated heat-assisted monitoring component includes a heat storage support box 401. The top end of the heat storage support box 401 is open. The heat storage support box 401 is filled with a heat storage body 402. Inside the top end of the heat storage body 402, a heat collecting plate 403 matching it is fixedly installed. At the bottom end of the heat collecting plate 403, a heat storage guiding rod 404 is fixedly installed. There is a heat-conducting connection between the inside of the end-sealing middle-permeable member and the heat storage body 402 through an adjustable heat-conducting member 005. The heat storage support box 401 is made of a heat-insulating material. The heat storage body 402 is made of a phase-change heat storage material. The upper surface of the heat collecting plate 403 is coated with a solar heat-absorbing coating. Both the heat collecting plate 403 and the heat storage guiding rod 404 are made of heat-conducting materials. The bottom end of the heat storage guiding rod 404 is embedded in the heat storage body 402. When the cable is running, it will generate a certain amount of heat, and the heat will also accelerate the aging of the sheath layer. Since a photovoltaic power station is usually set in an area with sufficient sunlight, the heat collecting plate 403 can absorb solar energy through the solar heat-absorbing coating on its surface and generate heat. The generated heat can be transferred to the heat storage body 402 through the heat storage guiding rod 404 and stored. The heat stored in the heat storage body 402 can be guided to the inner side of the same-loss simulation inspection sleeve 201 through the adjustable heat-conducting member 005 to simulate the heat generated when the cable is running. Therefore, through the setting of the simulated heat-assisted monitoring component, the simulated heat-assisted monitoring component can cleverly utilize the environmental characteristics of the area where the photovoltaic power station is located, convert solar energy into heat energy and transfer it to the inner side of the same-loss simulation inspection sleeve 201 to simulate the heat generated when the cable is running, so that the same-loss simulation inspection sleeve 201 can more accurately simulate the sheath layer, and further improve the accuracy and reliability of monitoring and early warning.

[0025] The adjustable heat-conducting member 005 includes a connecting-box heat-conducting rod 501 penetrating and embedded in the outer wall of the heat storage support box 401, and a connecting-sleeve heat-conducting rod 502 penetrating and embedded in the end-sealing circular plate 301 and matching with the connecting-box heat-conducting rod 501. Both the connecting-box heat-conducting rod 501 and the connecting-sleeve heat-conducting rod 502 are made of heat-conducting materials. One end of the connecting-box heat-conducting rod 501 is embedded in the heat storage body 402, and the other end of the connecting-box heat-conducting rod 501 abuts against the connecting-sleeve heat-conducting rod 502. A vertical plate 405 is fixedly installed in the middle air-permeable cylinder 302, and a conduction-breaking adjusting member 406 is fixedly installed on the vertical plate 405. One end of the conduction-breaking adjusting member 406 away from the vertical plate 405 is fixedly connected with a conduction-breaking cylinder 407 matching with the connecting-sleeve heat-conducting rod 502. One end of the conduction-breaking cylinder 407 close to the connecting-sleeve heat-conducting rod 502 is set to be open, and the conduction-breaking cylinder 407 is made of heat-insulating materials. The conduction-breaking adjusting member 406 is made of shape memory alloy material. The conduction-breaking adjusting member 406 is in the low-temperature phase shape, and the length of the high-temperature phase shape of the conduction-breaking adjusting member 406 is greater than the length of its low-temperature phase shape. The phase change temperature of the conduction-breaking adjusting member 406 is 40 - 60 °C (the phase change temperature of the conduction-breaking adjusting member 406 can be reasonably adjusted according to the average temperature inside the sheath layer when the cable body 001 is working normally). As heat is transferred, the temperature inside the same-loss simulation sleeve 201 will gradually increase. When the temperature rises to the phase change temperature of the conduction-breaking adjusting member 406, the conduction-breaking adjusting member 406 will elongate due to restoring to the high-temperature phase shape, thereby pushing the conduction-breaking cylinder 407, so that the conduction-breaking cylinder 407 is sleeved on the connecting-sleeve heat-conducting rod 502 to completely cover one end of the connecting-sleeve heat-conducting rod 502 located inside the same-loss simulation sleeve 201. Furthermore, heat transfer can be blocked to a great extent, the heat transfer efficiency can be greatly reduced, and the temperature inside the same-loss simulation sleeve 201 can be prevented from being too high. Therefore, through the settings of the conduction-breaking adjusting member 406, the conduction-breaking cylinder 407, etc., the temperature inside the same-loss simulation sleeve 201 can be stabilized within a certain range, which can not only more realistically simulate the temperature inside the sheath layer, but also prevent the temperature inside the same-loss simulation sleeve 201 from being too high, further improving the accuracy and reliability of monitoring and early warning.

[0026] The simulated heat monitoring component also includes a horizontal plate 409 fixedly mounted on the closed end circular plate 301, and an electric push rod 410 is fixedly mounted on the horizontal plate 409. The output end of the electric push rod 410 is fixedly connected to the heat storage support box 401 through a linkage rod 411. The monitoring intelligent control system also includes an overheating adjustment module and a threshold setting module. The temperature sensor 408 and the threshold setting module are both connected to the overheating adjustment module signal. The overheating adjustment module is connected to the electric push rod 410 signal. The temperature sensor 408 is used to monitor the same damage simulated inspection set 20 1, and the monitored temperature data will be transmitted to the overheating adjustment module in real time. A temperature threshold will be reasonably set by the threshold setting module. When the temperature inside the same-damage inspection sleeve 201 reaches the temperature threshold, the overheating adjustment module will control the electric push rod 410 to drive the heat storage support box 401 to move upward, causing the box-connected heat conducting rod 501 and the sleeve-connected heat conducting rod 502 to stagger and separate, thereby completely disconnecting the heat conduction connection between the inside of the same-damage inspection sleeve 201 and the heat storage body 402, effectively preventing the temperature from rising further.

[0027] The adjustable heat conducting member 005 also includes an upper insulation sleeve 503 and a lower insulation sleeve 504 which are movably mounted on the connecting box heat conducting rod 501. The upper insulation sleeve 503 and the lower insulation sleeve 504 are both configured to be semicircular tubes that match the connecting box heat conducting rod 501. The upper insulation sleeve 503 is located above the lower insulation sleeve 504. One end of the upper insulation sleeve 503 is fixedly connected to the heat storage support box 401, and the other end is abutted against the closed end circular plate 301. One end of the lower insulation sleeve 504 is fixedly connected to the closed end circular plate 301, and the other end is abutted against the heat storage support box 401. The upper insulation sleeve 503 and the lower insulation sleeve 504 are both made of insulation material. The upper insulation sleeve 503 and the lower insulation sleeve 504 can play a heat preservation role without affecting the up and down movement of the heat storage support box 401, thereby reducing heat loss.

[0028] A light intensity sensor 412 and a support plate 413 are fixedly installed on the outer wall of the heat storage support box 401. An adjustment motor 414 is fixedly installed on the support plate 413. The output end of the adjustment motor 414 is fixedly connected by a connecting rod to a heat preservation cover plate 415 that matches the heat storage support box 401. The heat preservation cover plate 415 is made of heat preservation material. The monitoring, warning and intelligent control system further includes a heat storage adjustment module. The light intensity sensor 412 and the threshold setting module are both signal-connected to the heat storage adjustment module, and the heat storage adjustment module is signal-connected to the adjustment motor 414. At night or when the light intensity is low during the day, it is difficult for the heat collection plate 403 to effectively generate heat through the solar heat absorption coating on its surface, which easily leads to the heat generation efficiency being lower than the heat loss efficiency. To reduce the loss of the heat stored in the heat storage body 402, a light intensity threshold can be reasonably set through the threshold setting module. The light intensity sensor 412 is used to monitor the light intensity, and the light intensity data monitored by the light intensity sensor 412 will be transmitted to the heat storage adjustment module in real time. When the actual light intensity is lower than the light intensity threshold, the heat storage adjustment module will control the adjustment motor 414 to drive the heat preservation cover plate 415 to rotate, causing the heat preservation cover plate 415 to rotate to the top of the heat storage support box 401 and cover and seal the top of the heat storage support box 401, thereby effectively reducing the heat loss, and further improving the practicability and reliability of the heat-assisted monitoring component. In addition, after the actual light intensity is higher than the light intensity threshold again, the heat storage adjustment module will automatically control the adjustment motor 414 to drive the heat preservation cover plate 415 to rotate back to its original position.

[0029] Combined with the current actual requirements, the above-mentioned implementation manner adopted in this application, the protection scope is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An intelligent cable for a photovoltaic power station, comprising a cable body (001), wherein the cable body (001) comprises a conductor, an insulating layer, a shielding layer, and a sheath layer which are arranged in sequence from inside to outside, and is characterized in that, It also includes a damage monitoring intelligent warning mechanism and a monitoring and warning intelligent control system. The damage monitoring intelligent warning mechanism includes a same-damage simulation inspection sleeve (201) fixedly connected to the cable body (001). The material of the same-damage simulation inspection sleeve (201) is the same as that of the sheath layer, and the thickness of the same-damage simulation inspection sleeve (201) is less than that of the sheath layer. An end-sealing middle-permeable member matching it is fixedly installed inside the same-damage simulation inspection sleeve (201). The end-sealing middle-permeable member includes a pair of end-sealing circular plates (301). A middle air-permeable cylinder (302) is fixedly connected between the pair of end-sealing circular plates (301). The middle air-permeable cylinder (302) is a breathable multi-porous mesh structure. The pair of end-sealing circular plates (301) are both hermetically and fixedly connected to the same-damage simulation inspection sleeve (201). An external air pressure sensor (202) and an internal air pressure sensor (203) are fixedly installed on one of the end-sealing circular plates (301). The external air pressure sensor (202) and the internal air pressure sensor (203) are respectively located on the left and right sides of the end-sealing circular plate (301). The monitoring and warning intelligent control system includes a damage monitoring analysis module and a remote warning module. The external air pressure sensor (202) and the internal air pressure sensor (203) are both signal-connected to the damage monitoring analysis module. The damage monitoring analysis module is signal-connected to the remote warning module.

2. The intelligent cable for a photovoltaic power station according to claim 1, characterized in that, Sealing rings (204) are hermetically and fixedly connected to both ends of the same-damage simulation inspection sleeve (201). The two sealing rings (204) are respectively hermetically and fixedly connected to the two end-sealing circular plates (301), and the inner diameter of the sealing ring (204) is less than the diameter of the end-sealing circular plate (301).

3. The intelligent cable for a photovoltaic power station according to claim 1, characterized in that The damage monitoring intelligent warning mechanism also includes a simulated heat-assisted monitoring component. The simulated heat-assisted monitoring component includes a heat storage support box (401). The top of the heat storage support box (401) is open. A heat storage body (402) is filled in the heat storage support box (401). A heat collection plate (403) matching it is fixedly installed inside the top of the heat storage body (402). A heat storage conduction rod (404) is fixedly installed at the bottom of the heat collection plate (403). An adjustable heat conduction member (005) is thermally connected between the inside of the end-sealing middle-permeable member and the heat storage body (402).

4. The intelligent cable for a photovoltaic power station according to claim 3, wherein The heat storage support box (401) is made of a heat-insulating material. The heat storage body (402) is made of a phase change heat storage material. The upper surface of the heat collection plate (403) is coated with a solar heat absorption coating. The heat collection plate (403) and the heat storage conduction rod (404) are both made of heat-conducting materials. The bottom end of the heat storage conduction rod (404) is embedded in the heat storage body (402).

5. The intelligent cable for a photovoltaic power station according to claim 4, wherein The adjustable heat conduction member (005) includes a connecting box heat conduction rod (501) penetrating and embedded on the outer wall of the heat storage support box (401), and a connecting sleeve heat conduction rod (502) penetrating and embedded on the end-sealing circular plate (301) and matching the connecting box heat conduction rod (501). The connecting box heat conduction rod (501) and the connecting sleeve heat conduction rod (502) are both made of heat-conducting materials. One end of the connecting box heat conduction rod (501) is embedded in the heat storage body (402), and the other end of the connecting box heat conduction rod (501) abuts against the connecting sleeve heat conduction rod (502).

6. The intelligent cable for a photovoltaic power station according to claim 5, characterized in that, A vertical plate (405) is fixedly installed inside the middle air-permeable cylinder (302). A conduction-breaking adjusting member (406) is fixedly installed on the vertical plate (405). One end of the conduction-breaking adjusting member (406) away from the vertical plate (405) is fixedly connected to a conduction-breaking cylinder (407) that matches the sleeve-connected heat-conducting rod (502). One end of the conduction-breaking cylinder (407) close to the sleeve-connected heat-conducting rod (502) is open, and the conduction-breaking cylinder (407) is made of heat-insulating material. The conduction-breaking adjusting member (406) is made of shape memory alloy material. The conduction-breaking adjusting member (406) is in the low-temperature phase shape, and the length of the high-temperature phase shape of the conduction-breaking adjusting member (406) is greater than the length of its low-temperature phase shape. The phase change temperature of the conduction-breaking adjusting member (406) is 40 - 60 °C.

7. The intelligent cable for a photovoltaic power station according to claim 6, wherein, A temperature sensor (408) is fixedly installed inside the middle air-permeable cylinder (302). The pseudo-thermal assistance monitoring component further includes a cross plate (409) fixedly installed on the end-sealing circular plate (301). An electric push rod (410) is fixedly installed on the cross plate (409). The output end of the electric push rod (410) is fixedly connected to the heat storage support box (401) through a linkage rod (411). The monitoring and warning intelligent control system further includes an overheat adjustment module and a threshold setting module. The temperature sensor (408) and the threshold setting module are both in signal connection with the overheat adjustment module. The overheat adjustment module is in signal connection with the electric push rod (410).

8. The intelligent cable for a photovoltaic power station according to claim 5, characterized in that, The adjustable heat-conducting member (005) further includes an upper heat-insulating sleeve (503) and a lower heat-insulating sleeve (504) movably sleeved on the box-connected heat-conducting rod (501). The upper heat-insulating sleeve (503) and the lower heat-insulating sleeve (504) are both set as semi-circular tubular shapes that match the box-connected heat-conducting rod (501). The upper heat-insulating sleeve (503) is located above the lower heat-insulating sleeve (504). One end of the upper heat-insulating sleeve (503) is fixedly connected to the heat storage support box (401), and the other end abuts against the end-sealing circular plate (301). One end of the lower heat-insulating sleeve (504) is fixedly connected to the end-sealing circular plate (301), and the other end abuts against the heat storage support box (401). The upper heat-insulating sleeve (503) and the lower heat-insulating sleeve (504) are both made of heat-insulating materials.

9. The intelligent cable for a photovoltaic power station according to claim 7, characterized in that A light intensity sensor (412) and a support plate (413) are fixedly installed on the outer wall of the heat storage support box (401). An adjustment motor (414) is fixedly installed on the support plate (413). The output end of the adjustment motor (414) is fixedly connected to a heat-insulating cover plate (415) that matches the heat storage support box (401) through a connecting rod. The heat-insulating cover plate (415) is made of heat-insulating material. The monitoring and warning intelligent control system further includes a heat storage adjustment module. The light intensity sensor (412) and the threshold setting module are both in signal connection with the heat storage adjustment module. The heat storage adjustment module is in signal connection with the adjustment motor (414).

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