Marine photovoltaic cathodic protection system
Patent Information
- Application Number
- CN202522096937.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-28
AI Technical Summary
[0003]本实用新型的主要目的是提出一种海上光伏阴极保护系统，旨在解决现有的阴极保护系统无法对光伏桩基实现精细化电流分配的问题
[0018]本实用新型的技术方案将海上的光伏桩基群分为多个独立的分区，每个分区内设有至少一个光伏桩，且多个分区内光伏桩的个数和实际腐蚀状态会有所不同，通过为每个分区内配备至少一台分布式电源装置，使得每个分布式电源装置可根据其所辖分区内光伏桩的实际腐蚀状态、海水电阻率、温度等环境参数，动态调整输出电流，确保该分区内所有光伏桩均处于最佳保护电位范围，避免因电流不均导致的局部腐蚀或能源浪费。复合缆模块作为分布式电源装置与光伏桩之间的电连接桥梁，用于将分布式电源装置中的电流供给光伏桩。智能控制系统通过采集各分区内光伏桩的电位、电流、温度等数据，结合预设的算法模型(如PID控制、模糊控制或机器学习算法)，动态优化分布式电源装置的输出参数。例如，系统可通过对比实测电位与目标电位的偏差，自动调整脉宽调制(PWM)信号的占空比，实现对输出电流的精确控制。
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Figure CN224832865U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine photovoltaic pile foundation technology, and in particular to a marine photovoltaic cathodic protection system. Background Technology
[0002] Traditional offshore photovoltaic (PV) pile-based ICCP systems typically employ a centralized power supply scheme, where a central power source supplies power to multiple pile anode systems via cables to achieve cathodic protection for the entire PV array area. However, this traditional approach has revealed several technical shortcomings in practical applications. First, due to the varying number of PV panels connected to different areas within the PV pile group, the surface area and current requirements of the metal structures in different areas differ, making it difficult for a centralized power source to achieve precise current distribution to each pile unit. Utility Model Content
[0003] The main purpose of this invention is to propose a marine photovoltaic cathodic protection system, which aims to solve the problem that existing cathodic protection systems cannot achieve precise current distribution to photovoltaic pile foundations.
[0004] To achieve the above objectives, this utility model proposes a marine photovoltaic cathodic protection system, which includes:
[0005] A photovoltaic pile foundation group includes multiple photovoltaic piles arranged at intervals. The photovoltaic pile foundation group is divided into multiple independent zones, and each zone contains at least one photovoltaic pile.
[0006] A distributed power supply device is electrically connected to the photovoltaic piles, and at least one of the distributed power supply devices is provided in each of the partitions;
[0007] A composite cable module is disposed on one side of the photovoltaic pile. The distributed power supply device is electrically connected to the photovoltaic pile through the composite cable module, and each distributed power supply device is connected to at least one set of the composite cable module; and
[0008] The intelligent control system is integrated inside the distributed power supply device and is electrically connected to both the photovoltaic pile and the distributed power supply device.
[0009] In one embodiment, the number of photovoltaic piles contained in each of the partitions is different.
[0010] In one embodiment, the distributed power supply device comprises a control module, a switching power supply, and a monitoring module, wherein the control module and the switching power supply are both electrically connected to the monitoring module, and the monitoring module is electrically connected to the photovoltaic pile through the composite cable module.
[0011] In one embodiment, the marine photovoltaic cathodic protection system further includes a photovoltaic platform located on top of the photovoltaic pile, the distributed power supply device being installed on the photovoltaic platform, and the photovoltaic platform being equipped with photovoltaic panels and maintenance access.
[0012] In one embodiment, the composite cable module includes a composite cable, a counterweight, an auxiliary anode, and a reference electrode. The auxiliary anode and the reference electrode are located on one side of the photovoltaic pile, and the auxiliary anode and the reference electrode are spaced apart. The composite cable is located on one side of the photovoltaic pile, one end of the composite cable is electrically connected to a potentiostat, and the other end passes through the auxiliary anode and the reference electrode, and is connected to the auxiliary anode and the reference electrode respectively. The counterweight is located at the end of the composite cable away from the photovoltaic pile.
[0013] In one embodiment, the photovoltaic platform is provided with a cable channel, and the composite cable includes an above-water cable and an underwater cable that are interconnected. One end of the above-water cable extends into the cable channel and is electrically connected to the distributed power supply device. The other end of the above-water cable extends along the length of the photovoltaic pile, and the end of the underwater cable away from the above-water cable is connected to the counterweight.
[0014] In one embodiment, the underwater cable includes a sheath and a conductor located inside the sheath, the sheath being fixed to the outside of the photovoltaic pile by a plurality of spaced clamps.
[0015] In one embodiment, the photovoltaic pile is provided with a lifting lug, the above-water cable and the underwater cable are electrically connected at the lifting lug, and the end of the underwater cable connected to the counterweight is offset from the photovoltaic pile.
[0016] In one embodiment, the composite cable module further includes anti-collision buoys, which are sleeved on the end of the underwater cable near the surface cable, and multiple anti-collision buoys are arranged along the length of the underwater cable.
[0017] In one embodiment, the intelligent control system includes sensors, a data acquisition device, a processor, a network controller, a central control unit, and a remote monitoring and control terminal that are interconnected. The data acquisition device is electrically connected to the distributed power supply device.
[0018] This invention divides a marine photovoltaic (PV) pile cluster into multiple independent zones, each containing at least one PV pile. The number of PV piles and their actual corrosion status vary across zones. By equipping each zone with at least one distributed power supply unit, each unit can dynamically adjust its output current based on environmental parameters such as the actual corrosion status of the PV piles, seawater resistivity, and temperature within its zone. This ensures that all PV piles within that zone are within the optimal protection potential range, preventing localized corrosion or energy waste due to uneven current distribution. A composite cable module serves as the electrical connection bridge between the distributed power supply unit and the PV piles, supplying current from the distributed power supply unit to the PV piles. The intelligent control system collects data on the potential, current, and temperature of the PV piles in each zone and, combined with preset algorithm models (such as PID control, fuzzy control, or machine learning algorithms), dynamically optimizes the output parameters of the distributed power supply unit. For example, the system can automatically adjust the duty cycle of the pulse width modulation (PWM) signal by comparing the deviation between the measured potential and the target potential, achieving precise control of the output current. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0020] Figure 1 A schematic diagram of an embodiment of the marine photovoltaic cathodic protection system provided by this utility model;
[0021] Figure 2 A schematic diagram of the structure of a photovoltaic pile foundation group in one embodiment of the marine photovoltaic cathodic protection system provided by this utility model;
[0022] Figure 3 A block diagram of a distributed power supply device in another embodiment of the marine photovoltaic cathode protection system provided by this utility model;
[0023] Figure 4 A partial structural schematic diagram of the photovoltaic pile and composite cable module in another embodiment of the marine photovoltaic cathodic protection system provided by this utility model;
[0024] Figure 5 A partial structural diagram of the counterweight and composite cable in another embodiment of the marine photovoltaic cathodic protection system provided by this utility model.
[0025] Explanation of icon numbers:
[0026] 100. Offshore photovoltaic cathodic protection system; 1. Photovoltaic pile foundation group; 11. Zoning; 12. Photovoltaic pile; 121. Lifting lug; 2. Distributed power supply device; 21. Control module; 22. Switching power supply; 23. Monitoring module; 3. Composite cable module; 31. Composite cable; 311. Surface cable; 312. Underwater cable; 313. Clamp; 314. Anti-collision buoy; 32. Counterweight; 5. Photovoltaic platform; 51. Maintenance passage; 52. Cable passage.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] Traditional offshore photovoltaic (PV) pile-based ICCP systems typically employ a centralized power supply scheme, where a central power source supplies power to multiple pile anode systems via cables to achieve cathodic protection for the entire PV array area. However, this traditional approach has revealed several technical shortcomings in practical applications. First, due to the varying number of PV panels connected to different areas within the PV pile group, the surface area and current requirements of the metal structures in different areas differ, making it difficult for a centralized power source to achieve precise current distribution to each pile unit.
[0032] This utility model proposes a marine photovoltaic cathode protection system.
[0033] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the marine photovoltaic cathodic protection system 100 includes:
[0034] The photovoltaic pile foundation group 1 includes multiple photovoltaic piles 12 arranged at intervals. The photovoltaic pile foundation group 1 is divided into multiple independent zones 11, and each zone 11 contains at least one photovoltaic pile 12.
[0035] Distributed power supply device 2 is electrically connected to photovoltaic pile 12, and at least one distributed power supply device 2 is provided in each zone 11;
[0036] Composite cable module 3 is located on one side of photovoltaic pile 12. Distributed power device 2 is electrically connected to photovoltaic pile 12 via composite cable module 3, and each distributed power device 2 is connected to at least one set of composite cable module 3; and
[0037] The intelligent control system (not shown) is integrated inside the distributed power supply device 2 and is electrically connected to both the distributed power supply device 2 and the photovoltaic pile 12.
[0038] The technical solution of this utility model divides the offshore photovoltaic pile base group 1 into multiple independent zones 11. Each zone 11 contains at least one photovoltaic pile 12, and the number and actual corrosion status of photovoltaic piles 12 in the multiple zones 11 will vary. By equipping each zone 11 with at least one distributed power supply device 2, each distributed power supply device 2 can dynamically adjust its output current according to the actual corrosion status of the photovoltaic piles 12 in its zone 11, seawater resistivity, temperature, and other environmental parameters, ensuring that all photovoltaic piles 12 in that zone 11 are within the optimal protection potential range, avoiding localized corrosion or energy waste caused by uneven current distribution. The composite cable module 3 serves as the electrical connection bridge between the distributed power supply device 2 and the photovoltaic piles 12, used to supply the current from the distributed power supply device 2 to the photovoltaic piles 12. The intelligent control system collects data such as potential, current, and temperature of the photovoltaic piles 12 in each zone 11, and combines this data with a preset algorithm model (such as PID control, fuzzy control, or machine learning algorithm) to dynamically optimize the output parameters of the distributed power supply device 2. For example, the system can automatically adjust the duty cycle of the pulse width modulation (PWM) signal by comparing the deviation between the measured potential and the target potential, thereby achieving precise control of the output current.
[0039] Specifically, when the load on the photovoltaic piles 12 in a certain zone 11 changes due to factors such as marine organism attachment or coating aging, the distributed power supply device 2 can sense and adjust the output current in real time to maintain the stability of the cathodic protection effect. For example, if the resistivity of seawater in a certain zone 11 decreases due to changes in ocean currents, the distributed power supply device 2 in that zone 11 will automatically reduce the output current to prevent over-protection; conversely, it will increase the current to ensure adequate protection. The distributed power supply device 2 can be electrically connected to the photovoltaic piles 12 using a pluggable power supply or control board, enabling rapid replacement and maintenance.
[0040] In the embodiments of this utility model, please refer to Figure 2 The number of photovoltaic (PV) piles 12 within each zone 11 varies. In actual operation, the PV pile group 1 needs to be divided according to the different layouts of the offshore PV farm, based on the principle of proximity or the actual degree of corrosion. This results in a different number of PV piles 12 within each zone 11, allowing for the configuration of power capacity as needed. For example, for zones 11 with fewer PV piles 12 (e.g., 1-3 piles), the distributed power supply device 2 can achieve finer current adjustment, avoiding over-protection due to excessive current, reducing energy waste, and minimizing damage to the coating caused by cathode side reactions (such as hydrogen evolution). For zones 11 with more PV piles 12 (e.g., 5 or more piles), the distributed power supply device 2 can provide a larger output current, which is evenly distributed through the branch structure of the composite cable module 3, ensuring that all piles reach the protection potential and avoiding the "far-end under-protection" problem caused by current attenuation.
[0041] In the embodiments of this utility model, please refer to Figure 3 The distributed power supply device 2 comprises a control module 21, a switching power supply 22, and a monitoring module 23. Both the control module 21 and the switching power supply 22 are electrically connected to the monitoring module 23, and the monitoring module 23 is electrically connected to the photovoltaic pile 12 via a composite cable module 3. The composite cable module 3 not only performs current transmission but also integrates signal acquisition and mechanical support. In this embodiment, the composite cable module 3 can integrate power lines, signal lines, and optical fibers, simultaneously transmitting the output current of the switching power supply 22, the potential signal acquired by the monitoring module 23, and the communication data of the intelligent control system.
[0042] In the embodiments of this utility model, please refer to Figure 1 The marine photovoltaic cathodic protection system 100 also includes a photovoltaic platform 5, which is located on top of the photovoltaic piles 12. The distributed power supply device 2 is installed on the photovoltaic platform 5, and the photovoltaic platform 5 is equipped with photovoltaic panels and a maintenance access channel 51. The photovoltaic panels on the top of the photovoltaic platform 5 can directly utilize the abundant solar energy resources at sea to power the distributed power supply device 2; furthermore, the photovoltaic platform 5 is above sea level, avoiding long-term exposure of the distributed power supply device 2 to the high salt spray and high humidity underwater environment. In addition, the maintenance access channel 51 on the photovoltaic platform 5 allows users to directly access the installation location of the distributed power supply device 2, providing operating space for the maintenance and repair of the distributed power supply device 2 and the composite cable module 3. Optionally, the maintenance access channel 51 can be made of non-slip and corrosion-resistant materials (such as fiberglass or aluminum alloy) and equipped with guardrails and lighting equipment.
[0043] In the embodiments of this utility model, please refer to Figure 1 , Figure 4 and Figure 5 The composite cable module 3 includes a composite cable 31, a counterweight 32, an auxiliary anode, and a reference electrode. The auxiliary anode and the reference electrode are located on one side of the photovoltaic pile 12, and the auxiliary anode and the reference electrode are spaced apart. The composite cable 31 is located on one side of the photovoltaic pile 12. One end of the composite cable 31 is electrically connected to the potentiostat, and the other end passes through the auxiliary anode and the reference electrode and is connected to the auxiliary anode and the reference electrode respectively. The counterweight 32 is located at the end of the composite cable 31 away from the photovoltaic pile 12.
[0044] In this embodiment, one end of the composite cable 31 is suspended on the photovoltaic pile 12 and connected to the potentiostat. The other end is connected to the auxiliary anode and the reference electrode respectively. The auxiliary anode is connected to the positive terminal of the potentiostat through the composite cable 31, the reference electrode is connected to the reference terminal of the potentiostat, and the photovoltaic pile 12 is connected to the negative terminal of the potentiostat. The auxiliary anode includes an insulating sleeve and an anode body on the inner wall of the insulating sleeve. The insulating sleeve is sleeved on the outer periphery of the composite cable 31. A conductive module can be installed between the composite cable 31 and the insulating sleeve. The conductive module is sleeved on the outer periphery of the composite cable 31 and makes contact with the wires inside the composite cable 31. The outer periphery of the conductive module is connected to the anode body, so that the anode body is connected to the positive terminal of the potentiostat through the wires. It can continuously receive the output current of the potentiostat, and the conductive module makes the conduction process more stable. In addition, the counterweight 32 keeps the composite cable 31 in a taut state due to gravity, which can reduce the stability of the underwater composite cable 31, auxiliary anode and reference electrode caused by wind and waves. That is, in this embodiment, the potentiostat, composite cable 31, auxiliary anode, reference electrode and photovoltaic pile 12 constitute a complete cathodic protection circuit.
[0045] In the embodiments of this utility model, please refer to Figure 1 The photovoltaic platform 5 is equipped with a cable channel 52. The composite cable 31 includes an interconnected surface cable 311 and underwater cable 312. One end of the surface cable 311 extends into the cable channel 52 and is electrically connected to the distributed power supply device 2. The other end of the surface cable 311 extends along the length of the photovoltaic pile 12. The end of the underwater cable 312 away from the surface cable 311 is connected to a counterweight 32. The composite cable 31 consists of the surface cable 311 and the underwater cable 312, which are interconnected. The surface cable 311 extends along the length of the photovoltaic pile 12, allowing the structure of the photovoltaic pile 12 to act as a physical barrier, reducing the direct impact of waves, floating objects, or ship activity on the cable. For example, in nearshore areas, the surface cable 311 can be fixed in the cable guide clamp of the photovoltaic pile 12 to avoid fatigue fracture caused by wave swaying. The end of the underwater cable 312 is connected to the counterweight 32, ensuring that the cable maintains a predetermined position on the seabed and preventing displacement or entanglement caused by ocean currents or tides. For example, in sea areas with high current velocity, the counterweight 32 can anchor the underwater cable 312 near the photovoltaic pile 12, ensuring that the distance between the current output point and the protected pile is constant, thus improving the consistency of cathodic protection effect.
[0046] In the embodiments of this utility model, please refer to Figure 1The underwater cable includes a sheath and conductors inside the sheath. The sheath is fixed to the outside of the photovoltaic pile 12 by multiple spaced clamps 313. The underwater cable can adopt a multi-layer composite structure. The inner layer is a conductive core composed of multi-strand copper wires, which is responsible for transmitting cathodic protection current. The outer sheath can be made of fiber-reinforced material to provide tensile and abrasion resistance and adapt to the complex marine environment. Optionally, in other embodiments, an intermediate layer can be provided between the inner and outer layers. The intermediate layer is made of high-density polyethylene (HDPE) or cross-linked polyethylene (XLPE) to prevent current leakage and seawater corrosion.
[0047] In the embodiments of this utility model, please refer to Figure 4 The photovoltaic pile 12 is equipped with a lifting lug 121. The surface cable 311 and the underwater cable 312 are electrically connected at the lifting lug 121. The end of the underwater cable 312 that connects to the counterweight block 32 is offset from the photovoltaic pile 12. The lifting lug 121 serves as a pre-set connection point, providing stable physical support for the cable connection, allowing the cable to be effectively fixed without additional drilling or welding. Specifically, during construction, after the counterweight block 32 is hoisted and positioned, the redundant composite cable tail of the underwater cable 312 is pulled obliquely to the pre-reserved lifting lug 121 on the photovoltaic pile 12 using a special traction device. Then, it is led upwards along the photovoltaic pile 12 to the photovoltaic platform 5 to connect to the distributed power supply device 2, and a hydraulic tensioner is used to achieve precise fixation.
[0048] In the embodiments of this utility model, please refer to Figure 1 The composite cable module 3 also includes anti-collision buoys 314, which are fitted onto the end of the underwater cable 312 closest to the surface cable 311, and multiple anti-collision buoys 314 are arranged along the length of the underwater cable 312. The anti-collision buoys 314 can be made of high-strength elastic materials (such as polyurethane or rubber), capable of absorbing and dispersing mechanical stress under the impact of ship anchor chains, floating objects, or waves, preventing the underwater cable 312 from being directly stressed and reducing the risk of damage to the surface cable 311. Optionally, multiple anti-collision buoys 314 are spaced apart along the length of the cable to form a continuous protective zone, covering the shallow water area where the underwater cable 312 is most vulnerable. For example, three to five anti-collision buoys 314 can be arranged within a one-meter water depth range to form a uniformly distributed protective area.
[0049] In this embodiment of the invention, the intelligent control system includes interconnected sensors, a data acquisition device, a processor, a network controller, a central control unit, and a remote monitoring and control terminal. The data acquisition device is electrically connected to the distributed power supply unit 2. Sensors (such as potential sensors, current sensors, and temperature sensors) are deployed at key nodes of the photovoltaic piles 12 and the composite cable module 3 to collect parameters such as cathodic protection potential, current density, and ambient temperature in real time. For example, when seawater salinity fluctuates, the potential sensor can detect the potential change within one second, triggering the data acquisition device to record synchronously. The processor uses edge computing technology to perform real-time analysis of the collected data (such as polarization attenuation trends and corrosion rate prediction) and generate current adjustment commands. For example, when the number of photovoltaic piles 12 in a certain zone 11 increases, leading to increased current demand, the processor can calculate the optimal current allocation scheme in a short time and send it to the distributed power supply unit 2. The data acquisition device is directly electrically connected to the distributed power supply unit 2 to ensure rapid execution of control commands. The network controller uses industrial Ethernet or wireless communication technology (such as 5G / LoRa) to achieve high-speed data interaction between the distributed power supply unit 2, the sensors, and the central control unit. The central control unit is equipped with a visual interface that displays the protection status, current distribution, and equipment health of the photovoltaic piles 12 in each zone 11 in real time. For example, maintenance personnel can generate a "current heat map of zone 11" with one click through the central control unit, intuitively identify areas with insufficient current supply, and manually or automatically trigger adjustment commands. With the deployment of remote monitoring and control terminals (such as mobile apps and web platforms), maintenance personnel can view the system's operating status in real time, such as the protection potential of the photovoltaic piles 12 in each zone 11 and the output power of the distributed power supply device 2. For example, comprehensive monitoring of offshore facilities can be completed from a land-based control center without the need for on-site personnel.
[0050] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A marine photovoltaic cathodic protection system, characterized in that, The marine photovoltaic cathodic protection system includes: A photovoltaic pile foundation group includes multiple photovoltaic piles arranged at intervals. The photovoltaic pile foundation group is divided into multiple independent zones, and each zone contains at least one photovoltaic pile. A distributed power supply device is electrically connected to the photovoltaic piles, and at least one of the distributed power supply devices is provided in each of the partitions; A composite cable module is disposed on one side of the photovoltaic pile. The distributed power supply device is electrically connected to the photovoltaic pile through the composite cable module, and each distributed power supply device is connected to at least one set of the composite cable module; and The intelligent control system is integrated inside the distributed power supply device and is electrically connected to both the photovoltaic pile and the distributed power supply device.
2. The marine photovoltaic cathodic protection system as described in claim 1, characterized in that, The number of photovoltaic piles contained in each of the aforementioned zones is different.
3. The marine photovoltaic cathodic protection system as described in claim 1, characterized in that, The distributed power supply device comprises a control module, a switching power supply, and a monitoring module. The control module and the switching power supply are both electrically connected to the monitoring module, and the monitoring module is electrically connected to the photovoltaic pile through the composite cable module.
4. The marine photovoltaic cathodic protection system as described in claim 1, characterized in that, The marine photovoltaic cathodic protection system also includes a photovoltaic platform, which is located on top of the photovoltaic pile. The distributed power supply device is installed on the photovoltaic platform, and the photovoltaic platform is equipped with photovoltaic panels and maintenance access.
5. The marine photovoltaic cathodic protection system as described in claim 4, characterized in that, The composite cable module includes a composite cable, a counterweight, an auxiliary anode, and a reference electrode. The auxiliary anode and the reference electrode are located on one side of the photovoltaic pile, and the auxiliary anode and the reference electrode are spaced apart. The composite cable is located on one side of the photovoltaic pile. One end of the composite cable is electrically connected to a potentiostat, and the other end passes through the auxiliary anode and the reference electrode, and is connected to the auxiliary anode and the reference electrode respectively. The counterweight is located at the end of the composite cable away from the photovoltaic pile.
6. The marine photovoltaic cathodic protection system as described in claim 5, characterized in that, The photovoltaic platform is provided with a cable channel. The composite cable includes an above-water cable and an underwater cable that are connected to each other. One end of the above-water cable extends into the cable channel and is electrically connected to the distributed power device. The other end of the above-water cable extends along the length of the photovoltaic pile. The end of the underwater cable away from the above-water cable is connected to the counterweight.
7. The marine photovoltaic cathodic protection system as described in claim 6, characterized in that, The underwater cable includes a sheath and a conductor located inside the sheath. The sheath is fixed to the outside of the photovoltaic pile by a plurality of spaced clamps.
8. The marine photovoltaic cathodic protection system as described in claim 6, characterized in that, The photovoltaic pile is equipped with a lifting lug, and the above-water cable and the underwater cable are electrically connected at the lifting lug. The end of the underwater cable that connects to the counterweight is offset from the photovoltaic pile.
9. The marine photovoltaic cathodic protection system as described in claim 8, characterized in that, The composite cable module also includes anti-collision buoys, which are sleeved on the end of the underwater cable near the surface cable, and multiple anti-collision buoys are arranged along the length of the underwater cable.
10. The marine photovoltaic cathodic protection system as described in any one of claims 1 to 9, characterized in that, The intelligent control system includes sensors, data acquisition devices, processors, network controllers, central control units, and remote monitoring and control terminals that are interconnected. The data acquisition devices are electrically connected to the distributed power supply device.