Offshore converter station and protection method thereof

Abstract

The invention relates to the field of offshore converter stations, and discloses an offshore converter station and a protection method thereof.The offshore converter station comprises a converter station body, a baffle module and a monitoring control module, the baffle module comprises a fixing rod and limiting plates, a sliding rod corresponding to the fixing rod is slidably connected between every two adjacent limiting plates, and the sliding rods are fixedly connected with a protection plate; a telescopic rod is arranged between the sliding rod and the fixed rod and used for adjusting the inclination angle of the protection plate. The monitoring control module comprises a control platform and a first stress sensor, the first stress sensor is used for detecting the wave impact strength borne by the protection plate, and the control platform is used for receiving data of the first stress sensor and adjusting the inclination angle of the protection plate through a telescopic rod; the direct impact of sea waves on the converter station main body is reduced through the protection plate with the adjustable inclination angle, and a better protection effect on the converter station main body is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of converter station, in particular to a sea converter station and a protection method thereof. BACKGROUND

[0002] The sea converter station is an important component of the offshore wind power, and is easily damaged due to long-term influence of sea waves and other harsh environments, so it is necessary to regularly monitor and maintain the sea converter station.

[0003] In the existing technology, the maintenance and repair of the sea converter station often still rely on manual operation, which is not only time-consuming and laborious, but also very dangerous, and the state of the sea converter station cannot be continuously monitored. SUMMARY

[0004] The technical problem to be solved by the present application is how to improve the maintenance efficiency and effect of the sea converter station. In order to solve the above technical problem, the present application provides a sea converter station and a protection method thereof, which comprises a converter station body, and further comprises:

[0005] A baffle module comprises a plurality of fixed rods and a plurality of limiting plates. The plurality of fixed rods are connected end to end around the outer side wall of the converter station body. One end of the limiting plate is fixed to the outer side wall of the converter station body, and the other end extends away from the converter station body. A sliding rod is slidingly connected between adjacent two limiting plates corresponding to the fixed rod. The sliding rod is fixedly connected with a protection plate, and a telescopic rod is rotatably connected to the middle part of the sliding rod. The other end of the telescopic rod is rotatably connected to the middle part of the corresponding fixed rod. The telescopic rod is used to drive the sliding rod to slide along the extension direction of the limiting plate, so as to adjust the inclination angle of the protection plate relative to the converter station.

[0006] A monitoring control module comprises a control platform and a first stress sensor. The first stress sensor is arranged on the side of the protection plate away from the converter station body. The first stress sensor and the telescopic rod are electrically connected with the control platform. The first stress sensor is used to detect the wave impact strength of the protection plate. The control platform is used to receive the data of the first stress sensor and adjust the inclination angle of the protection plate through the telescopic rod.

[0007] Preferably, the edge of one side of the limiting plate is provided with a wave-shaped contour.

[0008] Preferably, the protection plate comprises a carbon fiber substrate, a sacrificial anode metal plate and an anti-corrosion coating, the carbon fiber substrate is arranged on the side of the protection plate close to the converter station body, the anti-corrosion coating is arranged on the side of the protection plate away from the converter station body, and the sacrificial anode metal plate is arranged between the carbon fiber substrate and the anti-corrosion coating.

[0009] Preferably, the deicing module is further included, the deicing module comprises a deicing mechanical arm and a second stress sensor, the deicing mechanical arm is arranged at the four corners of the converter station body, the second stress sensor is arranged on the pile leg at the bottom of the converter station body, and the deicing mechanical arm and the second stress sensor are electrically connected with the control platform, the second stress sensor is used for monitoring the icing state of the pile leg, and the deicing mechanical arm removes the ice layer on the pile leg.

[0010] Preferably, the balancing module is further included, the balancing module comprises a slide rail, a counterweight and a detection assembly;

[0011] The slide rail is arranged at the bottom of the converter station body, the slide rail comprises two tracks arranged in cross, the counterweight is slidingly arranged in the slide rail, and the counterweight is connected with a driving member, the driving member is used for driving the counterweight to move in the slide rail to adjust the position of the counterweight relative to the slide rail.

[0012] The detection assembly comprises an inclinometer, a wave sensor and a wind speed and direction instrument, the inclinometer is used for detecting the structural inclination of the converter station body, the wave sensor is used for detecting wave data, and the wind speed and direction instrument is used for detecting the current wind direction and speed.

[0013] The driving member, the inclinometer, the wave sensor and the wind speed and direction instrument are electrically connected with the control platform.

[0014] Preferably, the repairing module comprises a drone platform, a drone and a feedback assembly;

[0015] The drone platform is fixedly connected to one side of the converter station body, and the drone platform is used for accommodating the drone.

[0016] The feedback assembly comprises a signal receiving plate, and the signal receiving plate is arranged between the sacrificial anode metal plate and the anti-corrosion coating.

[0017] The drone is used for emitting signals to the surface of the protection plate at regular time intervals, receiving the reflected signals of the signal receiving plate, detecting whether the anti-corrosion coating is broken, and shooting the damaged area of the anti-corrosion coating.

[0018] And the drone is used for spraying an anti-corrosion agent to the damaged area of the anti-corrosion coating.

[0019] Preferably, the converter station body includes multiple modules, and maintenance channels are provided between the multiple modules, with maintenance ladders provided in the maintenance channels.

[0020] The present invention also provides a protection method for an offshore converter station, used in the offshore converter station described above, comprising the following steps:

[0021] S1. The first stress sensor detects the impact intensity of the protective plate and converts the impact intensity signal into an electrical signal;

[0022] S2, The first stress sensor sends the impact electrical signal to the control platform;

[0023] S3. The control platform sends a signal to extend or retract the telescopic rod, thereby adjusting the tilt angle of the protective plate so that the protective plate can block and guide some of the waves, reducing the wave impact intensity on the main body of the converter station.

[0024] Preferably, it also includes a slide rail, a counterweight, an inclinometer, a wave sensor, and an anemometer, and further includes the following steps:

[0025] S11. Collect environmental parameters around the main body of the converter station and the structural tilt angle of the main body of the converter station through inclinometer, wave sensor and wind vane; and transmit the collected environmental parameters and structural tilt angle parameters to the control platform. The control platform standardizes the data to eliminate dimensional differences.

[0026] S12. The control platform predicts the impact intensity and direction of future waves based on environmental parameters and structural tilt angle, and calculates the optimal counterweight distribution of the converter station main body by combining the predicted impact intensity and predicted impact direction.

[0027] S13. The control platform calculates the position of each counterweight block in the corresponding slide rail based on the calculated optimal counterweight distribution, and drives and adjusts the position of the counterweight block in the slide rail through the drive component.

[0028] S14. When the model prediction fails, switch to the fuzzy PID control mode based on tilt feedback, and dynamically adjust the position of the counterweight block by the real-time tilt change rate of the main structure of the converter station detected by the tilt meter.

[0029] Preferably, it also includes a drone platform, a drone, and a signal receiving board, and further includes the following steps:

[0030] S21. The control platform receives in real time data from the inclinometer, wave sensor, anemometer, first stress sensor, and UAV scanning of the protective plate surface. It performs time synchronization and noise filtering on the data to generate a unified structural state dataset.

[0031] S22. Based on the integrated dataset, analyze the structural dynamic balance requirements and maintenance task priorities through machine learning algorithms, and generate counterweight movement instructions and inspection drone maintenance path planning schemes.

[0032] S23. Simulate extreme environmental loads such as typhoons and giant waves in the digital twin model of the control platform, predict the structural response of the main body of the converter station, and verify the reliability of the control strategy. If the simulation results show that the structure exceeds the safety threshold, the planning scheme will be re-optimized.

[0033] S24. The control platform drives the counterweight to move along the slide rail according to the optimized control instructions and dispatches the UAV to perform maintenance tasks. During the execution, the sensors provide real-time feedback on the actual structural status of the converter station to the digital twin model.

[0034] S25. Compare the actual feedback data with the simulation prediction results. If the deviation exceeds the preset range, the strategy will be automatically re-optimized, the UAV mission priority will be updated, and historical operation data will be synchronously entered into the knowledge base to continuously improve the adaptability of the control algorithm.

[0035] Compared with the prior art, the offshore converter station and its protection method provided in this embodiment of the invention have the following advantages:

[0036] In this invention, a protective plate is installed around the outer edge of the converter station body. The protective plate can prevent waves from directly contacting the converter station body, thus preventing waves from eroding and corroding the converter station and damaging its structure. In addition, the first stress sensor can also sense the impact intensity of the waves on the protective plate. When the wave intensity is too high and the impact on the converter station body is too great, the protective plate can also adjust its tilt angle under the control of the control platform via a telescopic rod. This allows the protective plate to reduce some of the wave impact intensity and guide the waves, thereby reducing the intensity of the wave impact on the converter station body and protecting the converter station structure. Attached Figure Description

[0037] Figure 1 This is a perspective view of the present invention;

[0038] Figure 2 This is a schematic diagram illustrating the state changes of the protective plate of the present invention;

[0039] Figure 3 This is a layered structural diagram of the protective plate of the present invention;

[0040] Figure 4 This is a simplified diagram showing the connection between the control platform of the test base of the present invention and the counterweight and slide rail;

[0041] Figure 5This is another perspective view of the present invention;

[0042] Figure 6 This is a schematic diagram of the adjustment process of the baffle module in this invention;

[0043] Figure 7 This is a schematic diagram of the adjustment process of the balancing module in this invention;

[0044] Figure 8 This is a schematic diagram of the control platform's feedback adjustment of the protective plate and counterweight in this invention. In the diagram: 1. Converter station main body; 11. Pile leg; 12. Maintenance passage; 13. Maintenance ladder;

[0045] 2. Baffle module; 21. Fixing rod; 22. Limiting plate; 23. Sliding rod; 24. Telescopic rod; 25. Protective plate; 251. First stress sensor; 252. Wavy profile; 253. Carbon fiber substrate; 254. Sacrificial anode metal plate; 255. Anti-corrosion coating; 256. Signal receiving board;

[0046] 3. Control platform;

[0047] 4. De-icing module; 41. De-icing robotic arm; 42. Second stress sensor;

[0048] 5. Balancing module; 51. Slide rail; 52. Counterweight; 53. Inclinometer; 54. Anemometer;

[0049] 6. Repair module; 61. Unmanned aerial vehicle platform; 62. Unmanned aerial vehicle. Detailed Implementation

[0050] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0051] like Figures 1 to 5 As shown, a preferred embodiment of the present invention provides an offshore converter station, which includes a converter station body 1, and further includes:

[0052] The baffle module 2 includes multiple fixed rods 21 and multiple limiting plates 22. The multiple fixed rods 21 are connected end to end and arranged around the outer wall of the converter station body 1. One end of the limiting plate 22 is fixed to the outer wall of the converter station body 1, and the other end extends away from the converter station body 1. A sliding rod 23 is slidably connected between two adjacent limiting plates 22 corresponding to the fixed rods 21. A protective plate 25 is fixedly connected to the sliding rod 23, and a telescopic rod 24 is rotatably connected to the middle of the sliding rod 23. The other end of the telescopic rod 24 is rotatably connected to the middle of the corresponding fixed rod 21. The telescopic rod 24 is used to drive the sliding rod 23 to slide along the extension direction of the limiting plate 22 to adjust the tilt angle of the protective plate 25 relative to the converter station.

[0053] The monitoring and control module includes a control platform 3 and a first stress sensor 251. The first stress sensor 251 is located on the side of the protective plate 25 away from the main body 1 of the converter station. The first stress sensor 251 and the telescopic rod 24 are electrically connected to the control platform 3. The first stress sensor 251 is used to detect the wave impact intensity of the protective plate 25. The control platform 3 is used to receive the data from the first stress sensor 251 and adjust the tilt angle of the protective plate 25 through the telescopic rod 24.

[0054] Specifically, offshore converter stations are built on sponge-like surfaces, and their lower parts are frequently subjected to the impact and corrosion of ocean waves. Regular inspections and maintenance of the lower sides of the converter station are necessary, which is not only time-consuming and labor-intensive but also prone to oversights. In this embodiment, a protective plate 25 is specifically installed around the lower side of the converter station body 1, which is susceptible to wave impact. The protective plate 25 is initially vertical, approximately parallel to the side wall of the converter station body 1, thus protecting the lower side wall of the converter station body 1 from direct wave impact and corrosion, and providing protection for the converter station body 1. In addition, a first stress sensor 251 is also provided on the protective plate 25. The first stress sensor 251 is located on the side of the protective plate 25 away from the converter station body 1, that is, the first stress sensor 251 can directly face the waves, thereby detecting the impact intensity of the waves on the protective plate 25 and the converter station body 1. When the first stress sensor 251 detects that the impact intensity of the waves exceeds a preset threshold, it can send a signal to the control platform 3. The control platform 3 can then drive the sliding rod 23 to slide between the two limit plates 22 along the extension direction of the limit plates 22 through the telescopic rod 24, thereby adjusting the angle of the protective plate 25. The inclined protective plate 25 can, on the one hand, offset part of the wave impact and prevent the waves from directly eroding and corroding the converter station body 1, and on the other hand, it can also guide the waves, thereby eliminating the direct impact of the waves on the protective plate 25 and the converter station body 1, reducing the impact intensity of the waves on the converter station body 1, and realizing the protection of the converter station body 1 structure. Furthermore, in this embodiment, the telescopic rod 24 is preferably a hydraulic push rod. Compared with electric and pneumatic push rods, hydraulic push rods have better strength, can apply greater thrust, can withstand greater wave impact, and have better structural stability, making them less prone to damage in harsh environments. Additionally, the control platform 3 can be located inside the converter station body 1 or on top of the converter station body 1.

[0055] In some embodiments, the edge of one side of the limiting plate 22 has a wavy profile 252.

[0056] Specifically, in some embodiments, one, three, or more protective plates 25 can be provided on one side of the converter station body 1, depending on the actual size of the converter station body 1 and the installation requirements. When there is only one protective plate 25 on one side of the converter station body 1, the side of the limiting plates 22 located on both sides of the protective plate 25 away from the protective plate 25 is provided with a wavy profile 252. This wavy profile 252 can disrupt the structure of the waves and further reduce the impact intensity of the waves. When two or more protective plates 25 need to be provided on one side of the converter station body 1, the corresponding number of fixing rods 21 and limiting plates 22 also needs to be increased. In this case, the wavy profile 252 is provided on one edge of the limiting plate 22 located at the corner of the converter station body 1, so as to avoid affecting the adjustment of the angle of the protective plate 25.

[0057] In some embodiments, the protective plate 25 includes a carbon fiber substrate 253, a sacrificial anode metal plate 254, and an anti-corrosion coating 255. The carbon fiber substrate 253 is disposed on the side of the protective plate 25 close to the converter station body 1, the anti-corrosion coating 255 is disposed on the side of the protective plate 25 away from the converter station body 1, and the sacrificial anode metal plate 254 is disposed between the carbon fiber substrate 253 and the anti-corrosion coating 255.

[0058] Specifically, in this embodiment, the protective plate 25 has a multi-layer structure. Its bottom layer is a carbon fiber substrate 253, which has higher strength and is more able to withstand the impact of waves. The middle sacrificial anode metal plate 254 is connected to the outer wall of the converter station body 1, and the sacrificial anode protects the cathode, preventing seawater corrosion of the outer wall structure of the converter station body 1, thus protecting the converter station body 1. The outermost anti-corrosion coating 255 is mainly composed of reactive metals. The outermost anti-corrosion coating 255, together with the inner sacrificial anode metal plate 254, forms a double-layer composite sacrificial anode. The anti-corrosion coating 255 is sprayed onto... The upper surface of the sacrificial anode can also protect the outer wall of the converter station body 1 through the sacrificial anode method, and rapidly polarize the outer wall of the converter station body 1, further improving the anti-corrosion effect of the outer wall of the converter station body 1. It can also extend the service life of the inner sacrificial anode metal plate 254, providing a more stable anti-corrosion effect for the converter station body 1. Moreover, the anti-corrosion coating 255 can be supplemented by subsequent spraying by the UAV 62, avoiding the continuous erosion and corrosion of waves from causing significant damage to the sacrificial anode metal plate 254 inside the protective plate 25, thereby further improving the anti-corrosion effect of the converter station body 1, making the anti-corrosion effect more stable and longer-lasting.

[0059] In some embodiments, the system further includes a de-icing module 4, which includes a de-icing robotic arm 41 and a second stress sensor 42. The de-icing robotic arm 41 is located at the four corners of the converter station body 1, and the second stress sensor 42 is located on the pile leg 11 at the bottom of the converter station body 1. Both the de-icing robotic arm 41 and the second stress sensor 42 are electrically connected to the control platform 3. The second stress sensor 42 is used to monitor the icing state of the pile leg 11, and the de-icing robotic arm 41 removes the ice layer on the pile leg 11.

[0060] Specifically, in cold sea areas, in addition to the impact and corrosion of waves, the main body 1 of the converter station also faces the problem of ice formation on the legs 11. Icing on the legs 11 puts pressure on their structure, subjecting them to additional gravity and potentially damaging their internal structure. In this embodiment, de-icing robotic arms 41 are fixedly installed at the four corners of the main body 1 of the converter station. The ends of the robotic arms 41 are equipped with de-icing shovels or other de-icing structures, such as de-icing collars fitted onto the legs 11. When the second stress sensor 42 on the legs 11 detects a stress change, it transmits a signal to the control platform 3. The control platform 3 then determines whether the legs 11 are icy based on preset values. When the legs are icy, the control platform 3 sends a signal to control the robotic arms to operate, thereby removing the ice layer from the legs 11. It should also be noted that the structure of the de-icing robotic arm 41 is the existing industrial robotic arm structure. Adjustments such as corrosion prevention and waterproofing can be made according to the marine environment to enable it to adapt to the harsh marine environment. However, the overall structure and operation mode of the de-icing robotic arm 41 are the same as the existing industrial robotic arm structure, so its specific structure will not be described in detail here.

[0061] In some embodiments, a balancing module 5 is also included, which includes a slide rail 51, a counterweight 52, and a detection component.

[0062] The slide rail 51 is located at the bottom of the converter station body 1. The slide rail 51 includes two intersecting rails. The counterweight 52 is slidably disposed in the slide rail 51 and is connected to a driving component. The driving component is used to drive the counterweight 52 to move within the slide rail 51 to adjust the position of the counterweight 52 relative to the slide rail 51.

[0063] The detection components include an inclinometer 53, a wave sensor, and an anemometer 54. The inclinometer 53 is used to detect the structural inclination angle of the converter station main body, the wave sensor is used to detect wave data, and the anemometer 54 is used to detect the current wind direction and wind speed.

[0064] The drive unit, inclinometer 53, wave sensor and wind speed and direction sensor 54 are all electrically connected to the control platform 3.

[0065] Specifically, in the actual marine environment, the converter station will be subjected to a large impact force when facing the impact of the waves. This impact force will cause significant damage to the structure of the converter station main body 1. Therefore, it is necessary to adjust the structure of the converter station main body 1 according to the direction and intensity of the waves, so as to reduce the impact damage of the waves on the converter station main body 1. In this embodiment, a movable counterweight 52 is installed at the bottom of the converter station body 1. A detection component is also installed on the converter station body 1. Wave sensors in the detection component can monitor the wave height, period, and direction of waves around the converter station body 1 in real time. An anemometer 54 monitors the current wind direction and speed at sea, and an inclinometer 53 monitors the current structural tilt angle of the converter station body 1. The collected data, including current wind speed, significant wave height, peak period, and the roll and pitch angles fed back by the inclinometer 53, are fed into the data model of the control platform 3. The control platform 3 can then predict the amplitude and direction angle of the wave excitation force within a certain future timeframe based on past data parameters and the currently input parameters. Based on the prediction results, the position of the counterweight 52 in the slide rail 51 is adjusted. A driving component pushes the counterweight 52 to move within the slide rail 51, changing the center of gravity and tilt angle of the entire converter station body 1, allowing the converter station body 1 to better resist the impact of approaching waves. Multiple slide rails 51 are installed at the bottom of the converter station body 1, and one inclinometer 53 is installed at each of the four corners of the bottom of the converter station body 1, thereby enabling more comprehensive monitoring of the tilt angle of the converter station body 1. Furthermore, in this embodiment, the counterweight 52 is moved within the slide rails 51 by a drive motor (not shown in the figure). In other embodiments, the movement of the counterweight 52 within the slide rails 51 can also be achieved by four hydraulic push rods installed in different tracks. The hydraulic push rods push the counterweight 52 to move within the slide rails 51 and limit the position of the counterweight 52 within the slide rails 51. In addition, in this embodiment, the wave sensor and the inclinometer 53 are integrated together. Furthermore, in other embodiments, multiple airbags are also installed at the bottom of the converter station body 1. By inflating different airbags, different buoyancy can be provided to the converter station body 1, thereby better adjusting the center of gravity of the converter station body 1 structure.

[0066] In some embodiments, a repair module 6 is also included, which includes a drone platform 61, a drone 62, and a feedback component.

[0067] The drone platform 61 is fixedly connected to one side of the converter station body 1, and the drone platform 61 is used to house the drone 62;

[0068] The feedback component includes a signal receiving board 256, which is disposed between the sacrificial anode metal plate 254 and the anti-corrosion coating 255.

[0069] The drone 62 is used to periodically transmit signals to the surface of the protective plate 25 and receive the reflected signals from the signal receiving plate 256 to detect whether the anti-corrosion coating 255 is broken and to photograph the damaged area of ​​the anti-corrosion coating 255.

[0070] In addition, the drone 62 is also used to spray anti-corrosion spray onto the damaged areas of the anti-corrosion coating 255.

[0071] Specifically, in some embodiments, the drone 62 housed in the drone platform 61 is divided into an inspection drone 62 and a repair drone 62. The inspection drone 62 is equipped with a high-precision camera and a lidar module. The inspection drone 62 mainly transmits signals to the protective plate 25 through the lidar module, and at the same time receives the signal feedback from the signal receiving board 256 on the protective plate 25, thereby determining that the anti-corrosion coating 255 on the protective plate 25 is damaged. Then, the inspection drone 62 can obtain the morphological data of the damaged area of ​​the anti-corrosion coating 255 through the high-precision camera, and send the coordinates and morphological data of the damaged location to the control platform 3. The control platform 3 can then control the repair drone 62 to fly to the damaged area. Then, the repair drone 62 can spray the anti-corrosion coating 255 onto the damaged area through its onboard storage device and spray nozzle device to repair the anti-corrosion coating 255, thereby ensuring the stability of the double-layer sacrificial anode structure, avoiding excessive consumption of the inner sacrificial anode metal plate 254, improving the service life of the entire protective plate 25 and the stability of the anti-corrosion effect on the main structure of the converter station 1. Of course, in some other embodiments, the functions of the inspection drone 62 and the repair drone 62 can be integrated into the same drone 62. Furthermore, the signal received by the inspection drone 62 can be a special radar signal reflected by the signal receiving board 256, or an electrical signal emitted by the signal receiving board 256 after receiving radar illumination. In a particular embodiment, the coordinates and shape data of the damaged area can also be accurately obtained through the radar reflection signal. Combined with the CCD image processing technology in the high-precision camera, the shape data of the damaged area can be obtained more accurately.

[0072] Furthermore, during actual operation, the inspection drone 62 takes pictures and scans the outer surface of the protective plate 25 at preset intervals and sends the results back to the control platform 3 in real time. The control platform 3 generates point cloud and image datasets based on the feedback data, quantifies the damage level, and generates a maintenance report. Based on the damage level and location coordinates in the report, the control platform 3 formulates a repair plan according to the quantified damage level.

[0073] Level L1 (Minor Damage): According to the damage sequence, the repair drone 62 will perform local touch-up spraying of the anti-corrosion coating 255;

[0074] Level L2 (Moderate Damage): Suspend minor damage repair work, focus on treating moderately damaged areas, and extend the inspection frequency of adjacent areas to once every four hours;

[0075] Level L3 (Severe Damage): Linkage telescopic rod 24, adjust the protective angle of the protective plate 25 through the telescopic rod 24 to reduce wave impact, and send a request for manual intervention at the same time.

[0076] In some embodiments, the converter station body 1 includes multiple modules, and a maintenance passage 12 is provided between the multiple modules. The maintenance passage 12 is equipped with a maintenance ladder 13. Specifically, the modular design of the converter station body 1 and the setting of the maintenance passage 12 facilitate subsequent manual maintenance and also facilitate the passage of the drone 62.

[0077] like Figure 6 As shown, the present invention also provides a protection method for an offshore converter station, used in the aforementioned offshore converter station, comprising the following steps:

[0078] S1. The first stress sensor 251 detects the impact intensity of the protective plate 25 and converts the impact intensity signal into an electrical signal.

[0079] S2, The first stress sensor 251 sends the impact electrical signal to the control platform 3;

[0080] S3, the control platform 3 sends a signal to extend or retract the telescopic rod 24, thereby adjusting the tilt angle of the protective plate 25 so that the protective plate 25 can block and guide some of the waves, reducing the wave impact intensity on the main body 1 of the converter station.

[0081] Specifically, in actual use, the first stress sensor 251 located on the protective plate 25 can constantly monitor the impact force received by the protective plate 25. When the detected impact force is too large, the control platform 3 can adjust the tilt angle of the protective plate 25 by hydraulically controlling the movement of the telescopic rod 24, so that the protective plate 25 can guide some of the waves, thereby reducing the impact intensity received by the converter station body 1. Furthermore, in some other embodiments, the control platform 3 can also adjust the tilt angle of the protective plate 25 in advance according to the wave height and period parameters monitored by the wave sensor, and make real-time fine adjustments to the tilt angle of the protective plate 25 according to the stress data detected by the first stress sensor 251, thereby ensuring that the wave impact received by the converter station body 1 is smaller.

[0082] like Figure 7 As shown, in some embodiments, the system also includes a slide rail 51, a counterweight 52, an inclinometer 53, a wave sensor, and an anemometer 54, and further includes the following steps:

[0083] S11. Collect environmental parameters around the main body 1 of the converter station and the structural tilt angle of the main body 1 of the converter station using inclinometer 53, wave sensor and wind vane; and transmit the collected environmental parameters and structural tilt angle parameters to control platform 3. Control platform 3 performs data standardization processing to eliminate dimensional differences.

[0084] S12. The control platform 3 predicts the impact intensity and direction of future waves based on environmental parameters and structural tilt angle, and calculates the optimal counterweight distribution of the converter station main body 1 by combining the predicted impact intensity and predicted impact direction.

[0085] S13. The control platform 3 calculates the position of each counterweight block 52 in the corresponding slide rail 51 based on the calculated optimal counterweight distribution, and drives and adjusts the position of the counterweight block 52 in the slide rail 51 through the driving component.

[0086] S14. When the model prediction fails, switch to the fuzzy PID control mode based on tilt feedback, and dynamically adjust the position of the counterweight block 52 by the real-time tilt change rate of the main body 1 structure of the converter station detected by the tilt meter 53.

[0087] Specifically, in actual operation, the control platform 3 adopts a bidirectional long short-term memory network model and is trained based on the wave height, period, direction, wind speed and direction time series data from the detected historical wave spectrum and the tilt response records of the converter station main body 1 structure. At the same time, based on the currently detected wind speed, effective wave height, wave peak period, and the roll and pitch angles fed back by the inclinometer 53, combined with historical parameter data, it predicts the predicted amplitude and direction angle of the wave excitation force within a certain period of time in the future, and calculates the optimal weight distribution of the counterweight blocks 52. Then, the control platform 3 sends signals to control each counterweight block 52 to move within the slide rail 51 to the coordinate position of the optimal weight distribution, thereby better and more effectively responding to the impact of waves in the future period of time and reducing the impact of wave impact on the converter station main body 1 structure. When the model prediction fails, it is necessary to switch to the fuzzy PID control mode based on tilt feedback. The position of the counterweight 52 is dynamically adjusted by monitoring the tilt change rate of the main body 1 of the converter station under wave impact in real time, so as to minimize the impact of wave impact on the main body 1 of the converter station. In extreme conditions, the position of the counterweight 52 can be automatically locked by hydraulic push rod to prevent the counterweight 52 from going out of control and shifting.

[0088] like Figure 8 As shown, in some embodiments, the system also includes a drone platform 61, a drone 62, and a signal receiver board 256, and further includes the following steps:

[0089] S21. The control platform 3 receives in real time the surface data of the protective plate 25 scanned by the inclinometer 53, wave sensor, wind speed and direction meter 54, first stress sensor 251 and UAV 62, performs time synchronization and noise filtering on the data, and generates a unified structural state dataset.

[0090] S22. Based on the integrated dataset, analyze the structural dynamic balance requirements and maintenance task priorities through machine learning algorithms to generate movement instructions for counterweight 52 and maintenance path planning schemes for inspection drone 62.

[0091] S23. Simulate extreme environmental loads such as typhoons and giant waves in the digital twin model of control platform 3, predict the structural response of converter station main body 1, and verify the reliability of the control strategy. If the simulation results show that the structure exceeds the safety threshold, the planning scheme will be re-optimized.

[0092] S24. The control platform 3 drives the counterweight 52 to move along the slide rail 51 according to the optimized control instructions, and dispatches the drone 62 to perform maintenance tasks. During the execution, the sensors provide real-time feedback of the actual structural status of the converter station body 1 to the digital twin model.

[0093] S25. Compare the actual feedback data with the simulation prediction results. If the deviation exceeds the preset range, the strategy will be automatically re-optimized, and the priority of the UAV 62 missions will be updated. Historical operation data will be synchronously entered into the knowledge base to continuously improve the adaptability of the control algorithm.

[0094] Specifically, the data acquired by various sensors are compiled into a unified structural state dataset. Then, a digital twin model is used to more realistically model the state of the converter station main body 1. Based on the structural characteristic dataset, machine learning algorithms such as LSTM (Long Short-Term Memory) and DDPG (Deep Deterministic Policy Gradient) are used to analyze the structural dynamic balance requirements and maintenance task priorities, thereby forming an initial control strategy for the movement commands of the counterweight 52 and the maintenance path planning scheme of the UAV 62. Subsequently, various virtual extreme working conditions are generated using the digital twin model to verify the feasibility of the initial control strategy. When the simulation results show that the results exceed the safety threshold, the initial control strategy needs to be further optimized to generate a new control strategy. Then, the control platform 3 adjusts the movement of the counterweight 52 and the inspection and repair path of the UAV 62 according to the optimized control strategy. At the same time, various sensors also provide real-time feedback data to the control platform 3. Finally, the real-time feedback data is compared with the simulation data in the digital twin model, and the control strategy is further optimized based on the comparison results.

[0095] In summary, this invention provides an offshore converter station and its protection method. The protective plate 25 can prevent the direct impact and corrosion of the converter station body 1 by sea waves. At the same time, by adjusting the tilt angle of the protective plate 25, the impact of sea waves on the converter station body 1 can be further prevented. The double-layer sacrificial anode structure on the protective plate 25 can also minimize the corrosion of the converter station body 1. In addition, with the real-time repair of the anti-corrosion coating 255 by the UAV 62, the corrosion resistance of the converter station body 1 can be further improved, and the stability of the converter station body 1 structure can be improved.

[0096] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A marine converter station, comprising a converter station body, characterized in that, Also includes: A baffle module includes multiple fixed rods and multiple limiting plates. The fixed rods are connected end to end and arranged around the outer wall of the converter station body. One end of each limiting plate is fixed to the outer wall of the converter station body, and the other end extends away from the converter station body. A sliding rod is slidably connected between two adjacent limiting plates corresponding to the fixed rods. A protective plate is fixedly connected to the sliding rod, and a telescopic rod is rotatably connected to the middle of the sliding rod. The other end of the telescopic rod is rotatably connected to the middle of the corresponding fixed rod. The telescopic rod is used to drive the sliding rod to slide along the extension direction of the limiting plate to adjust the tilt angle of the protective plate relative to the converter station. The monitoring and control module includes a control platform and a first stress sensor. The first stress sensor is located on the side of the protective plate away from the main body of the converter station. The first stress sensor and the telescopic rod are electrically connected to the control platform. The first stress sensor is used to detect the wave impact intensity of the protective plate. The control platform is used to receive the data from the first stress sensor and adjust the tilt angle of the protective plate through the telescopic rod.

2. The offshore converter station according to claim 1, characterized in that, The limiting plate has a wavy outline on one side of its edge.

3. The offshore converter station according to claim 1, characterized in that, The protective plate includes a carbon fiber substrate, a sacrificial anode metal plate, and an anti-corrosion coating. The carbon fiber substrate is disposed on the side of the protective plate close to the main body of the converter station, the anti-corrosion coating is disposed on the side of the protective plate away from the main body of the converter station, and the sacrificial anode metal plate is disposed between the carbon fiber substrate and the anti-corrosion coating.

4. The offshore converter station according to claim 1, characterized in that, It also includes a de-icing module, which includes a de-icing robotic arm and a second stress sensor. The de-icing robotic arm is located at the four corners of the converter station body, and the second stress sensor is located on the pile legs at the bottom of the converter station body. Both the de-icing robotic arm and the second stress sensor are electrically connected to the control platform. The second stress sensor is used to monitor the icing state of the pile legs, and the de-icing robotic arm removes the ice layer on the pile legs.

5. The offshore converter station according to claim 1, characterized in that, It also includes a balancing module, which comprises a slide rail, a counterweight, and a detection component; The slide rail is located at the bottom of the converter station body. The slide rail includes two intersecting tracks. The counterweight is slidably disposed within the slide rail and is connected to a driving component. The driving component is used to drive the counterweight to move within the slide rail to adjust the position of the counterweight relative to the slide rail. The detection components include an inclinometer, a wave sensor, and an anemometer. The inclinometer is used to detect the structural tilt angle of the converter station main body, the wave sensor is used to detect wave data, and the anemometer is used to detect the current wind direction and wind speed. The drive unit, inclinometer, wave sensor, and wind speed and direction sensor are all electrically connected to the control platform.

6. The offshore converter station according to claim 3, characterized in that, It also includes a repair module, which comprises a drone platform, a drone, and a feedback component; The drone platform is fixedly connected to one side of the converter station body, and the drone platform is used to house the drone; The feedback component includes a signal receiving board, which is disposed between the sacrificial anode metal plate and the anti-corrosion coating; The drone is used to periodically transmit signals to the surface of the protective plate and receive the reflected signals from the signal receiving plate to detect whether the anti-corrosion coating is broken and to photograph the damaged area of ​​the anti-corrosion coating. Furthermore, the drone is used to spray anti-corrosion spray onto the damaged areas of the anti-corrosion coating.

7. The offshore converter station according to claim 1, characterized in that, The converter station consists of multiple modules, with maintenance access channels between them, and maintenance ladders are provided in these access channels.

8. A protection method for an offshore converter station, employing the offshore converter station as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. The first stress sensor detects the impact intensity of the protective plate and converts the impact intensity signal into an electrical signal; S2, The first stress sensor sends the impact electrical signal to the control platform; S3. The control platform sends a signal to extend or retract the telescopic rod, thereby adjusting the tilt angle of the protective plate so that the protective plate can block and guide some of the waves, reducing the wave impact intensity on the main body of the converter station.

9. The offshore converter station protection method according to claim 8, comprising a slide rail, a counterweight, an inclinometer, a wave sensor, and a wind speed and direction meter, characterized in that, It also includes the following steps: S11. Collect environmental parameters around the main body of the converter station and the structural tilt angle of the main body of the converter station through inclinometer, wave sensor and wind vane; and transmit the collected environmental parameters and structural tilt angle parameters to the control platform. The control platform standardizes the data to eliminate dimensional differences. S12. The control platform predicts the impact intensity and direction of future waves based on environmental parameters and structural tilt angle, and calculates the optimal counterweight distribution of the converter station main body by combining the predicted impact intensity and predicted impact direction. S13. The control platform calculates the position of each counterweight block in the corresponding slide rail based on the calculated optimal counterweight distribution, and drives and adjusts the position of the counterweight block in the slide rail through the drive component. S14. When the model prediction fails, switch to the fuzzy PID control mode based on tilt feedback, and dynamically adjust the position of the counterweight block by the real-time tilt change rate of the main structure of the converter station detected by the tilt meter.

10. The method for protecting a marine converter station according to claim 9, comprising an unmanned aerial vehicle (UAV) platform, a UAV, and a signal receiving board, characterized in that, It also includes the following steps: S21. The control platform receives in real time data from the inclinometer, wave sensor, anemometer, first stress sensor, and UAV scanning of the protective plate surface. It performs time synchronization and noise filtering on the data to generate a unified structural state dataset. S22. Based on the integrated dataset, analyze the structural dynamic balance requirements and maintenance task priorities through machine learning algorithms, and generate counterweight movement instructions and inspection drone maintenance path planning schemes. S23. Simulate extreme environmental loads such as typhoons and giant waves in the digital twin model of the control platform, predict the structural response of the main body of the converter station, and verify the reliability of the control strategy. If the simulation results show that the structure exceeds the safety threshold, the planning scheme will be re-optimized. S24. The control platform drives the counterweight to move along the slide rail according to the optimized control instructions and dispatches the UAV to perform maintenance tasks. During the execution, the sensors provide real-time feedback on the actual structural status of the converter station to the digital twin model. S25. Compare the actual feedback data with the simulation prediction results. If the deviation exceeds the preset range, the strategy will be automatically re-optimized, the UAV mission priority will be updated, and historical operation data will be synchronously entered into the knowledge base to continuously improve the adaptability of the control algorithm.

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