Prevention and treatment system and method for water accumulation at bottom of power generation field station outgoing line pole tower

Abstract

The application provides a power plant outgoing line tower bottom water accumulation prevention and treatment system and method, which comprises a water accumulation prevention module, a water accumulation detection module, a water accumulation treatment module and a control module. The water accumulation prevention module reduces water accumulation from the source through the triple structure of flow guide, anti-seepage and cofferdam; the water accumulation detection module realizes multi-stage liquid level monitoring by using an industrial input liquid level sensor, and has temperature compensation and self-checking functions; the water accumulation treatment module and the control module are linked to automatically start the water drainage action; the control module takes an industrial PLC as the core to realize signal processing, threshold judgment, linkage control and abnormal alarm. The application solves the problems of insufficient prevention, untimely monitoring and low treatment efficiency of tower bottom water accumulation in the prior art, can effectively prevent tower foundation corrosion, inclination and even collapse, significantly reduces the manual operation and maintenance cost, adapts to complex outdoor terrain and extreme temperature environment, and guarantees the safe and stable operation of the power plant outgoing line.

Description

Technical Field

[0001] This invention relates to the field of power facility protection technology, and in particular to a system and method for preventing and controlling water accumulation at the bottom of power plant transmission line towers. Background Technology

[0002] Power transmission line towers from power plants are a crucial component of the power transmission system, and the stability of their foundations directly affects the safe operation of the entire power system. Currently, power plant transmission line towers are mostly located in open outdoor areas with complex terrain, making them prone to water accumulation at the base during the rainy season and winter snowmelt period. Existing technologies primarily rely on manual inspections and manual intervention to address this water accumulation, which has several drawbacks: First, there is a lack of effective preventative measures for water accumulation. Treatment is only reactive after water accumulates, failing to reduce its formation at the source. Especially in winter, melted snow water freezes quickly, and delayed manual inspections can directly trigger freezing hazards, leading to uneven stress on the tower foundations and exacerbating tower tilting or even collapse. Second, manual inspections are inefficient. Outdoor towers are scattered and numerous, making it difficult for maintenance personnel to monitor the water accumulation at the base of each tower in real time. Often, by the time water accumulation is discovered, the tower foundation has already suffered some corrosion. Furthermore, manual inspections are difficult and unsafe during winter and the rainy season, and are even more inconvenient after ice forms in winter. Third, remediation methods are cumbersome, often involving manual digging of drainage ditches and manual pumping, which is time-consuming and labor-intensive. Drainage ditches are easily clogged with silt and weeds, and pumping equipment requires manual handling and operation, making it impossible to automatically and promptly drain water. Once frozen in winter, water cannot be quickly cleared, easily leading to long-term freezing hazards. Fourth, the existing drainage devices only have a single drainage function, lacking water accumulation monitoring and prevention capabilities, and have poor adaptability, failing to adapt to different terrains and different causes of water accumulation on poles. Furthermore, the lack of a stable outdoor power supply results in low operational reliability of the devices, making them unable to cope with emergencies such as rapid freezing of snowmelt water in winter.

[0003] Currently, there is no dedicated device in existing technology that integrates water accumulation prevention, real-time monitoring, and automatic management for the characteristics of power plant transmission line towers. This makes it impossible to fundamentally solve the problem of large amounts of water accumulating at the bottom of the towers and to meet the high reliability and low maintenance cost requirements of power plant transmission lines. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects of the prior art and provide a system and method for preventing and controlling water accumulation at the bottom of power plant transmission line towers. It aims to solve the technical problems of insufficient prevention of water accumulation at the bottom of towers, untimely monitoring, and low control efficiency in the prior art, which leads to tower foundation corrosion and tower tilting. In particular, the water accumulation in winter freezes and exacerbates the tilting and collapse of towers, threatening the safety of power plant transmission lines. At the same time, it reduces the cost of manual operation and maintenance and improves the level of intelligent protection of tower foundations.

[0005] According to one objective of the present invention, the present invention provides a system for preventing and controlling water accumulation at the bottom of power plant transmission line towers, comprising: The water accumulation prevention module is installed around the tower foundation and adopts a triple structure of diversion, seepage prevention and cofferdam. It is used to block and guide water flow from the source and prevent water from accumulating at the bottom of the tower. The water accumulation detection module is installed at the lowest point of the tower foundation to monitor the water depth at the bottom of the tower in real time and transmit the liquid level data to the control module. The water accumulation control module is electrically connected to the control module and is used to automatically drain the water accumulated at the bottom of the tower after receiving the drainage command from the control module. The control module is electrically connected to the water accumulation detection module and the water accumulation treatment module respectively. It is used to receive liquid level data and perform threshold judgment, send control commands to the water accumulation treatment module according to the judgment results, and issue alarm signals in case of abnormal conditions.

[0006] Furthermore, the water accumulation prevention module includes: The flow guiding component is laid in a ring around the base of the tower, including a flow guiding channel with a trapezoidal cross section and a diversion ditch connected to the flow guiding channel. The slope of the flow guiding channel is 3°~5°, and the diversion ditch is connected to the surrounding natural drainage channels. The seepage prevention component, laid at the bottom of the tower foundation and the surrounding ground surface, includes a high-density polyethylene geomembrane with a thickness of ≥1.5mm and an anti-slip geotextile covering the surface of the geomembrane. The geomembrane covers an area 50-80cm beyond the outer perimeter of the tower foundation, and the edges are fixed and buried by pressure strips. The cofferdam assembly, located outside the tower foundation and inside the diversion channel, is a corrosion-resistant rubber annular cofferdam with a height of 15-20cm, and the bottom of the cofferdam is tightly fitted with the impermeable membrane.

[0007] Furthermore, the water accumulation detection module includes at least one industrial-grade submersible liquid level sensor. The liquid level sensor has an IP68 protection rating, a measurement range of 0-50cm, and a measurement accuracy of ±1mm. The liquid level sensor has a built-in temperature compensation unit and a self-test unit, and is suitable for working environments ranging from -40℃ to +85℃.

[0008] Furthermore, the waterlogging control module includes: The drainage assembly includes a small submersible sewage pump with a power of 370W~750W and a PVC drainage pipe with a diameter of ≥50mm. The drainage flow rate of the submersible pump is ≥15L / min. One end of the drainage pipe is connected to the submersible pump, and the other end extends to a natural drainage area or a pre-set collection well 10~15m away from the tower foundation. The anti-clogging component includes a stainless steel filter screen disposed at the inlet of the submersible pump and a detachable cleaning port disposed at the inlet end of the drain pipe, wherein the pore size of the stainless steel filter screen is ≤5mm. The auxiliary drainage component includes a porous water collection plate laid on the inner side of the cofferdam, the porous water collection plate being connected to the inlet of the submersible pump.

[0009] Furthermore, the control module uses an industrial-grade PLC as the main control unit, and has a built-in signal processing unit, threshold judgment unit, linkage control unit and alarm unit; the threshold judgment unit has three preset liquid level thresholds, namely the warning threshold, the treatment threshold and the exceeding threshold.

[0010] Furthermore, it also includes a power supply module, which comprises a solar panel and an energy storage battery, used to provide a stable DC power supply to each module of the system.

[0011] Furthermore, the waterlogging control module supports both automatic and manual control modes; in manual control mode, the drainage components can be started and stopped via remote commands or on-site buttons.

[0012] The method for preventing and automatically controlling water accumulation at the bottom of power plant transmission line towers based on the above system includes the following steps: Step S1, Water Accumulation Prevention: Set up a triple structure of diversion, seepage prevention and cofferdam around the tower foundation. The diversion component guides rainwater and snowmelt water to areas away from the tower foundation, the seepage prevention component blocks groundwater infiltration, and the cofferdam component prevents surrounding water accumulation and sediment from flowing in. Step S2, Real-time detection: The water depth is monitored in real time by a liquid level sensor installed at the lowest point of the tower foundation, and the liquid level data is transmitted to the control module. Step S3, Threshold Judgment: The control module processes the received liquid level data and compares it with the preset three-level liquid level threshold. Step S4, Automatic Treatment: When the water depth reaches the treatment threshold, the control module sends a drainage command to the water treatment module to start the submersible pump for drainage; when the water depth drops below the safe value, the control module sends a stop drainage command. Step S5, Abnormal Alarm: When the water depth reaches the warning threshold or exceeds the standard threshold, or when the liquid level sensor detects a fault, the control module issues a corresponding alarm signal.

[0013] Furthermore, in step S3, the three-level liquid level thresholds are specifically: the warning threshold is a water depth ≥ 5cm, the treatment threshold is a water depth ≥ 10cm, and the exceeding threshold is a water depth ≥ 20cm; when the water depth reaches the warning threshold, the control module issues a warning signal; when the water depth reaches the exceeding threshold, the control module issues an emergency alarm signal.

[0014] Furthermore, it also includes the following steps: Step S6, Manual Control: In an emergency, maintenance personnel can manually start or stop the drainage components via remote commands or on-site buttons; Step S7, Sensor Self-Test: The liquid level sensor performs a self-test periodically. When a short circuit, open circuit, or excessive measurement deviation is detected, it sends a fault signal to the control module, and the control module issues a sensor fault alarm.

[0015] The technical solution of this invention fundamentally solves the core defects of existing technologies that passively handle water accumulation through an integrated architecture of prevention, monitoring, and treatment. Its integrated structure blocks water accumulation at its source, preventing premature erosion of tower foundations; real-time liquid level monitoring accurately detects water accumulation anomalies, solving the problems of incomplete coverage and delayed response of manual inspections; the control module, in conjunction with the treatment module, achieves automatic drainage without the need for on-site manual operation, significantly reducing outdoor operation and maintenance costs and safety risks. This system effectively prevents tower foundation corrosion, tilting, and collapse accidents caused by winter freezing, comprehensively ensuring the safe and stable operation of power plant transmission lines. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a structural block diagram of the water accumulation prevention and automatic control system at the bottom of the power plant transmission line towers, according to an embodiment of the present invention. Figure 2 This describes the workflow of the method for preventing and automatically controlling water accumulation at the bottom of power plant transmission line towers according to an embodiment of the present invention. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example 1 like Figure 1 As shown, the water accumulation prevention and automatic treatment system at the bottom of the power plant transmission line towers of the present invention mainly consists of a water accumulation prevention module, a water accumulation detection module, a water accumulation treatment module, a control module, and a power supply module.

[0022] The water accumulation prevention module is installed around the tower foundation and adopts a triple structure of "drainage + seepage prevention + cofferdam". The drainage component is a ring of cast concrete drainage channel around the base of the tower foundation. The drainage channel has a trapezoidal cross-section and a slope of 4° to ensure that rainwater and snowmelt can be quickly diverted. A diversion ditch is excavated outside the drainage channel and connects to the surrounding natural drainage ditches to further accelerate the drainage speed and prevent water backflow.

[0023] The seepage prevention component involves laying a 2mm thick high-density polyethylene geomembrane at the bottom of the tower foundation and around the surrounding ground surface. The geomembrane extends 60cm beyond the outer perimeter of the tower foundation, and its edges are secured with galvanized strips and buried 30cm deep to prevent groundwater from seeping to the surface and forming water accumulation. This also prevents water from seeping into the tower foundation and corroding the reinforcing steel. A layer of anti-slip geotextile is laid on the surface of the geomembrane to prevent damage during construction and inspection.

[0024] The cofferdam assembly consists of an annular cofferdam installed around the tower foundation and inside the diversion channel to prevent water accumulation. The cofferdam is made of corrosion-resistant butyl rubber and is 18cm high. It prevents surrounding water and sediment from flowing into the bottom of the tower foundation and can temporarily collect small amounts of spilled water. The bottom of the cofferdam is tightly bonded to the geomembrane with a special adhesive to ensure effective seepage prevention.

[0025] The water accumulation detection module employs an industrial-grade submersible level sensor, installed at the lowest point of the tower foundation (inside the cofferdam). This sensor has an IP68 protection rating, allowing it to operate stably while submerged in water for extended periods. Its measurement range is 0-50cm, with an accuracy of ±1mm. The sensor incorporates a temperature compensation unit, adapting to operating environments from -40℃ to +85℃, preventing temperature variations from affecting detection accuracy. It also features a self-checking function, automatically performing a fault diagnosis every 24 hours. If a short circuit, open circuit, or measurement deviation exceeding ±3mm occurs, a fault signal is promptly sent to the control module.

[0026] The control module uses a Siemens S7-200 SMART industrial-grade PLC as the main control unit, with built-in signal processing, threshold judgment, linkage control, and alarm units. The threshold judgment unit has three preset liquid level thresholds: a warning threshold of 5cm, a treatment threshold of 10cm, and an exceedance threshold of 20cm. The thresholds can be manually adjusted via the PLC's human-machine interface to adapt to different seasons and terrain requirements.

[0027] The waterlogging control module includes a drainage component, an anti-clogging component, and an auxiliary drainage component. The drainage component uses a small 550W submersible sewage pump, installed next to the level sensor. The pump body is waterproof and anti-clogging designed, with a drainage flow rate of 20L / min. A 75mm diameter PVC drainage pipe is also installed, with one end connected to the submersible pump and the other end extending to a natural drainage ditch 12m away from the tower foundation.

[0028] The anti-clogging component features a 3mm stainless steel filter screen at the submersible pump inlet to prevent sediment and weeds from entering the pump and causing blockages. Additionally, a removable flange cleaning port is installed at the inlet of the drainage pipe, allowing maintenance personnel to clean debris from the pipe quarterly.

[0029] The auxiliary drainage component involves laying a porous concrete water collection board on the inner side of the cofferdam, with a water collection pipe installed below the water collection board. The water collection pipe is connected to the inlet of the submersible pump, which can quickly collect the accumulated water in the cofferdam and speed up the drainage process.

[0030] The power supply module uses a 100W monocrystalline silicon solar panel and a 12V / 100Ah lead-acid battery to provide a stable DC power supply for all modules of the system. The solar panel is installed at a height of 3m on the tower body, facing due south to ensure sufficient sunlight. The battery has a waterproof and explosion-proof casing and is installed in an underground control cabinet next to the tower foundation.

[0031] The system supports both automatic and manual control modes. In automatic mode, when the level sensor detects a water depth of 10cm, the control module automatically starts the submersible pump to drain the water; when the water depth drops below 2cm, drainage automatically stops. In manual mode, maintenance personnel can send commands through the remote monitoring platform or manually start / stop the submersible pump using buttons on the on-site control cabinet.

[0032] Example 2 This embodiment optimizes and adjusts the water accumulation prevention module for poles in low-lying terrain.

[0033] In low-lying areas, the slope of the diversion channel will be increased to 5°, and a drainage ditch will be added outside the channel to improve drainage capacity. Simultaneously, the thickness of the geomembrane will be increased to 2.5mm, and its coverage area will be expanded to extend 80cm beyond the tower foundation to enhance seepage prevention. The cofferdam height will be increased to 20cm to prevent more surrounding water from flowing in.

[0034] Example 3 This embodiment optimizes and adjusts the water accumulation prevention module for poles in areas with abundant groundwater.

[0035] In areas rich in groundwater, a double-layer high-density polyethylene geomembrane with a total thickness of 3mm is used, extending 80cm beyond the outer perimeter of the tower foundation. A 5cm thick layer of gravel drainage is laid beneath the geomembrane to further lower the groundwater level. Simultaneously, a ring of seepage wells is installed outside the cofferdam to promptly drain any seeping groundwater.

[0036] like Figure 2 As shown, the working process of this invention is as follows: In daily operation, the water accumulation prevention module guides rainwater and snowmelt to the surrounding natural drainage channels through the diversion channel, blocks groundwater infiltration through the impermeable membrane, and prevents the inflow of surrounding water and sediment through the cofferdam, thereby reducing the formation of water accumulation at the bottom of the tower from the source.

[0037] The liquid level sensor monitors the water depth at the bottom of the tower in real time and transmits the liquid level data to the control module. The control module processes the received data and compares it with preset three-level thresholds.

[0038] When the water depth reaches 5cm, the control module issues an early warning signal to remind maintenance personnel to pay attention to the water accumulation on the tower.

[0039] When the water depth reaches 10cm, the control module automatically starts the submersible pump to drain the water. The water enters the submersible pump through the perforated water collection plate and water collection pipe, and is then discharged to an area away from the tower foundation via the drainage pipe.

[0040] When the water depth drops below 2cm, the control module automatically stops the submersible pump.

[0041] When the water depth reaches 20cm, the control module will issue an emergency alarm signal, and maintenance personnel must go to the site in time to handle the situation.

[0042] The liquid level sensor automatically performs a self-check every 24 hours. When a fault is detected, it sends a fault signal to the control module, which then issues a sensor fault alarm to remind maintenance personnel to replace or repair the sensor in a timely manner.

[0043] In emergency situations, such as severe rainstorms or sensor malfunctions, maintenance personnel can manually start submersible pumps to drain water via a remote monitoring platform or on-site buttons.

[0044] The present invention has the following beneficial effects: This invention integrates "prevention, monitoring and treatment" of water accumulation, reducing water accumulation at the source, while monitoring water accumulation in real time and automatically treating it, thus completely solving the problem of water accumulation at the bottom of towers.

[0045] This invention adopts a triple prevention design of "drainage, seepage prevention and cofferdam", which can effectively prevent rainwater, snowmelt and groundwater from accumulating at the bottom of the tower. It can also flexibly adjust parameters according to different terrains to adapt to tower scenarios with complex outdoor terrain and different causes of water accumulation.

[0046] This invention uses an industrial-grade immersion liquid level sensor with temperature compensation and self-testing functions. It is adaptable to extreme temperature environments from -40℃ to +85℃, has high detection accuracy and strong reliability, and can accurately capture minute changes in water accumulation, ensuring that the detection data during the winter snow melting period and the summer high temperature period are true and reliable.

[0047] This invention features a waterlogging control module that works in conjunction with a control module to automatically trigger and stop drainage operations without manual intervention, significantly improving efficiency and reducing maintenance costs. It also supports a manual control mode to meet emergency response needs.

[0048] This invention uses a solar power module, which solves the problem of unstable power supply outdoors, improves the operational reliability of the device, and can operate stably in remote outdoor areas for a long time.

[0049] This invention effectively prevents tower foundations from being damaged by water accumulation, corrosion, or freezing, avoids accidents such as tower tilting and collapse, and ensures the safe and stable operation of power plant transmission lines, resulting in significant economic and social benefits.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system for preventing and controlling water accumulation at the bottom of power transmission line towers in power plants, characterized in that, include: The water accumulation prevention module is installed around the tower foundation and adopts a triple structure of diversion, seepage prevention and cofferdam. It is used to block and guide water flow from the source and prevent water from accumulating at the bottom of the tower. The water accumulation detection module is installed at the lowest point of the tower foundation to monitor the water depth at the bottom of the tower in real time and transmit the liquid level data to the control module. The water accumulation control module is electrically connected to the control module and is used to automatically drain the water accumulated at the bottom of the tower after receiving the drainage command from the control module. The control module is electrically connected to the water accumulation detection module and the water accumulation treatment module respectively. It is used to receive liquid level data and perform threshold judgment, send control commands to the water accumulation treatment module according to the judgment results, and issue alarm signals in case of abnormal conditions.

2. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, The water accumulation prevention module includes: The flow guiding component is laid in a ring around the base of the tower, including a flow guiding channel with a trapezoidal cross section and a diversion ditch connected to the flow guiding channel. The slope of the flow guiding channel is 3°~5°, and the diversion ditch is connected to the surrounding natural drainage channels. The seepage prevention component, laid at the bottom of the tower foundation and the surrounding ground surface, includes a high-density polyethylene geomembrane with a thickness of ≥1.5mm and an anti-slip geotextile covering the surface of the geomembrane. The geomembrane covers an area 50-80cm beyond the outer perimeter of the tower foundation, and the edges are fixed and buried by pressure strips. The cofferdam assembly, located outside the tower foundation and inside the diversion channel, is a corrosion-resistant rubber annular cofferdam with a height of 15-20cm, and the bottom of the cofferdam is tightly fitted to the impermeable membrane.

3. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, The water accumulation detection module includes at least one industrial-grade submersible liquid level sensor. The liquid level sensor has an IP68 protection rating, a measurement range of 0-50cm, and a measurement accuracy of ±1mm. The liquid level sensor has a built-in temperature compensation unit and a self-test unit, and is suitable for working environments from -40℃ to +85℃.

4. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, The waterlogging control module includes: The drainage assembly includes a small submersible sewage pump with a power of 370W~750W and a PVC drainage pipe with a diameter of ≥50mm. The drainage flow rate of the submersible pump is ≥15L / min. One end of the drainage pipe is connected to the submersible pump, and the other end extends to a natural drainage area or a pre-set collection well 10~15m away from the tower foundation. The anti-clogging component includes a stainless steel filter screen disposed at the inlet of the submersible pump and a detachable cleaning port disposed at the inlet end of the drain pipe, wherein the pore size of the stainless steel filter screen is ≤5mm. The auxiliary drainage component includes a porous water collection plate laid on the inner side of the cofferdam, the porous water collection plate being connected to the inlet of the submersible pump.

5. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, The control module uses an industrial-grade PLC as the main control unit, and has a built-in signal processing unit, threshold judgment unit, linkage control unit and alarm unit; the threshold judgment unit has three preset liquid level thresholds, namely the early warning threshold, the treatment threshold and the exceeding threshold.

6. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, It also includes a power supply module, which comprises solar panels and energy storage batteries, used to provide a stable DC power supply to each module of the system.

7. The system for preventing and controlling water accumulation at the bottom of power plant transmission line towers according to claim 1, characterized in that, The waterlogging control module supports both automatic and manual control modes. In manual control mode, the drainage components can be started and stopped via remote commands or on-site buttons.

8. A method for preventing and automatically controlling water accumulation at the bottom of power plant transmission line towers based on any one of the systems described in claims 1-7, characterized in that, Includes the following steps: Step S1, Water Accumulation Prevention: Set up a triple structure of diversion, seepage prevention and cofferdam around the tower foundation. The diversion component guides rainwater and snowmelt water to areas away from the tower foundation, the seepage prevention component blocks groundwater infiltration, and the cofferdam component prevents surrounding water accumulation and sediment from flowing in. Step S2, Real-time detection: The water depth is monitored in real time by a liquid level sensor installed at the lowest point of the tower foundation, and the liquid level data is transmitted to the control module. Step S3, Threshold Judgment: The control module processes the received liquid level data and compares it with the preset three-level liquid level threshold. Step S4, Automatic Treatment: When the water depth reaches the treatment threshold, the control module sends a drainage command to the water treatment module to start the submersible pump for drainage; when the water depth drops below the safe value, the control module sends a stop drainage command. Step S5, Abnormal Alarm: When the water depth reaches the warning threshold or exceeds the standard threshold, or when the liquid level sensor detects a fault, the control module issues a corresponding alarm signal.

9. The method for preventing and automatically controlling water accumulation at the bottom of power plant transmission line towers according to claim 8, characterized in that, In step S3, the three-level liquid level thresholds are as follows: the warning threshold is a water depth ≥ 5cm, the treatment threshold is a water depth ≥ 10cm, and the exceeding threshold is a water depth ≥ 20cm. When the water depth reaches the warning threshold, the control module issues a warning signal; when the water depth reaches the exceeding threshold, the control module issues an emergency alarm signal.

10. The method for preventing and automatically controlling water accumulation at the bottom of power plant transmission line towers according to claim 8, characterized in that, It also includes the following steps: Step S6, Manual Control: In an emergency, maintenance personnel can manually start or stop the drainage components via remote commands or on-site buttons; Step S7, Sensor Self-Test: The liquid level sensor performs a self-test periodically. When a short circuit, open circuit, or excessive measurement deviation is detected, it sends a fault signal to the control module, and the control module issues a sensor fault alarm.

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