A very long wave antenna ground net system, monitoring method, device and storage medium

Abstract

The application discloses a very long wave antenna ground net system, which comprises a top capacity line ground net area, a high-voltage feeder ground net area, a tower ground net area, a ground net outer edge bus, a grounding deep well and a grounding shallow well, and further comprises one or more tuning pavilion ground net areas; the tuning pavilion ground net area adopts a vertical layered double-layer structure and comprises an upper ground net, a lower enhanced ground net and a vertical connecting piece; the upper ground net is radially laid in a shallow layer of the ground by a plurality of first radial conductive wires and is used for receiving and initially conducting the current from the tuning pavilion; the lower enhanced ground net is radially laid in a deep layer of the ground by a plurality of second radial conductive wires and is used for guiding the core large current into the deep ground; and the vertical connecting piece is electrically connected to the upper ground net and the lower enhanced ground net through a plurality of wire connecting pieces. The application further discloses a monitoring method based on the very long wave antenna ground net system, corresponding equipment and a storage medium. The application enhances the discharge capacity of the strong current area and improves the antenna radiation efficiency.

Description

Technical Field

[0001] This application relates to the field of radio communication technology, and more specifically, to a very long wave antenna ground network system, monitoring method, device and storage medium. Background Technology

[0002] With the rapid development of modern communication technology, very low wave (VLS) communication, due to its unique propagation stability and resistance to nuclear explosions, occupies an irreplaceable position in key fields such as terrestrial communication, underwater communication, and global time synchronization. However, VLS antennas operate at extremely low frequencies (typically 3-30kHz), resulting in very low radiation resistance and relatively high total system loss resistance, with ground loss resistance from the grounding network accounting for the majority. To improve the radiation efficiency of VLS antennas, it is essential to effectively reduce ground loss resistance. Although existing VLS antenna grounding systems have optimized the grounding network layout to some extent by incorporating structures such as top-line grounding networks, high-voltage feeder grounding networks, tuning pavilion grounding networks, and tower grounding networks, many shortcomings still exist.

[0003] Existing grounding grid structures are mostly single-layer shallow-buried designs. For core areas with extremely high current density, such as tuning pavilions, their current conductivity and long-term corrosion resistance are limited, making it difficult to form an ideal equipotential body, resulting in still significant grounding losses. Furthermore, existing grounding grid designs are often based on experience or simplified models, failing to accurately match the actual distribution of ground current density. This leads to low utilization of conductor materials and excessively high current density in some areas, affecting the balance between performance and cost. In addition, as a concealed project, once the grounding grid is installed, internal corrosion, fractures, and performance fluctuations caused by changes in soil moisture are difficult to monitor effectively. The hidden degradation risks during long-term operation are completely unknown, making operation and maintenance management highly reactive. Therefore, how to design a grounding grid system with a more rational structure, better matching with current density distribution, and better equipotentiality in core areas to further reduce overall grounding losses is a pressing technical problem to be solved in this field. Summary of the Invention

[0004] In view of at least one defect or improvement need in the prior art, this application provides a very long wave antenna ground network system, monitoring method, device and storage medium, which can solve at least one of the problems existing in the above background art.

[0005] To achieve the above objectives, this application provides a very long wave antenna grounding network system, including a top-capacity line grounding network area, a high-voltage feeder grounding network area, a tower grounding network area, an outer edge busbar of the grounding network, a deep grounding well, and a shallow grounding well, characterized in that it further includes one or more tuning pavilion grounding network areas;

[0006] The tuning pavilion grounding grid area adopts a vertically layered double-layer structure, including an upper grounding grid, a lower reinforced grounding grid, and vertical connectors;

[0007] The upper grounding grid consists of multiple first radial conductors laid radially in the shallow ground layer to receive and initially guide the current from the tuning pavilion;

[0008] The lower-level reinforced grounding grid consists of multiple second radial conductors laid radially deep in the ground to guide the core high current into the depths of the earth.

[0009] The vertical connector electrically connects the upper grounding grid and the lower reinforced grounding grid through multiple conductor connectors.

[0010] Furthermore, in the very long wave antenna ground network system, the tuning pavilion ground network area is provided with multiple concentric loop conductors on the basis of the radial radiating conductors. The multiple concentric loop conductors and the radial conductors are electrically welded at the intersection points to suppress the instantaneous change of local ground potential from exceeding a preset threshold.

[0011] Furthermore, in the very long wave antenna ground network system, the spacing of the multiple parallel conductors in the high voltage feeder ground network area is arranged using a nonlinear optimization based on a mathematical model of ground current density.

[0012] Furthermore, the upper very longwave antenna ground network system also includes a ground network health status intelligent monitoring module, which includes:

[0013] Multiple embedded sensors are distributed at the grounding grid nodes to collect soil resistivity, conductor test potential and grounding resistance;

[0014] The data acquisition and transmission unit is used to collect the data collected by the multiple embedded sensors and upload it wirelessly or via wired means;

[0015] The central processing unit is used to assess the current health status of the grounding network based on the data collected by the multiple embedded sensors, and automatically generate early warning information when the health status is abnormal.

[0016] Furthermore, in the very long wave antenna ground network system, the spacing of its multiple parallel conductors is arranged using a nonlinear optimization based on a mathematical model of ground current density, specifically including:

[0017] Based on the physical reality that the ground current density decreases nonlinearly from directly below the feeder to a distance, conductors with different densities are configured in different areas to make the density of the ground grid conductors match the actual intensity distribution of the ground current.

[0018] Furthermore, in the very long wave antenna ground network system, the central processing unit adopts a dynamic evaluation model to adjust the monitoring frequency of the ground network based on the real-time changes in monitoring data, prioritize key nodes, and proactively optimize the allocation of monitoring resources.

[0019] Furthermore, in the very long wave antenna ground network system, the data acquisition and transmission unit also includes a dynamic sampling adjustment module. The dynamic sampling adjustment module is used to dynamically adjust the sampling frequency according to the real-time current density of the ground network. The adjustment range of the sampling frequency is between 1Hz and 100Hz.

[0020] Furthermore, in the very long wave antenna ground network system, the vertical connector adopts a combination structure of multi-strand copper cable and copper rod, and its welding point surface is coated with an anti-corrosion coating.

[0021] In summary, compared with the prior art, the above-described technical solutions conceived in this application can achieve the following beneficial effects:

[0022] (1) The very long wave antenna ground network system provided in this application significantly enhances the current discharge capability of the high current area by setting a double-layer three-dimensional ground network in the core area of ​​the tuning pavilion, effectively reduces the grounding resistance of this part, thereby reducing the total loss resistance of the entire system and improving the antenna radiation efficiency.

[0023] (2) The very long wave antenna ground network system provided in this application creates a very stable equipotential region through the composite birdcage structure of the tuning pavilion ground network. Under high power operating conditions, it can better stabilize the ground potential of the feed point, which is beneficial to the stable operation of the entire antenna system.

[0024] (3) The very long wave antenna ground network system provided in this application embodiment achieves precise matching between the conductor distribution and the actual current density distribution of the ground network by performing precise optimization design based on the mathematical model of the high voltage feeder ground network, realizing the optimal layout of the conductor, concentrating the conductor material in the most needed area, avoiding unnecessary material waste in the current sparse area, significantly reducing the overall grounding loss resistance, effectively improving the antenna radiation efficiency, and effectively controlling the total project cost while ensuring performance.

[0025] (4) The very long wave antenna ground network system provided in this application, through the introduction of the intelligent monitoring module, enables the manager to conduct real-time and quantitative health status assessment and trend prediction of the huge hidden ground network project for the first time, realizing the transformation from passive maintenance to proactive and predictive maintenance, which greatly ensures the reliable operation of the antenna system within its decades-long design life. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a very long wave antenna ground network system structure is provided for an embodiment of this application;

[0028] Figure 2 A cross-sectional schematic diagram of the double-layer three-dimensional structure of the tuning pavilion ground grid area provided in the embodiments of this application;

[0029] Figure 3 A schematic diagram of the "birdcage" structure of the tuning pavilion ground grid area provided in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram illustrating the relationship between the nonlinear spacing of conductors and the ground current density in the high-voltage feeder grounding grid area, provided in an embodiment of this application. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other.

[0032] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0033] Figure 1 A schematic diagram of a very long wave antenna ground network system structure is provided for an embodiment of this application, as shown below. Figure 1 As shown in the embodiment of this application, a very long wave antenna ground network system includes a top-capacity line ground network area, a high-voltage feeder ground network area, a tower ground network area, a ground network outer edge busbar, a deep grounding well, and a shallow grounding well, and also includes one or more tuning pavilion ground network areas;

[0034] The tuning pavilion grounding grid area adopts a vertically layered double-layer structure, including an upper grounding grid, a lower reinforced grounding grid, and vertical connectors;

[0035] The upper grounding grid consists of multiple first radial conductors laid radially in the shallow ground layer to receive and initially guide the current from the tuning pavilion;

[0036] The lower-level reinforced grounding grid consists of multiple second radial conductors laid radially deep in the ground to guide the core high current into the depths of the earth.

[0037] The vertical connector electrically connects the upper grounding grid and the lower reinforced grounding grid through multiple conductor connectors.

[0038] Specifically, this application provides an adaptive partitioned and layered optimized high-efficiency longwave antenna ground network system, including a conventional top-capacity line ground network area 1, a high-voltage feeder ground network area 2, a tower ground network area 4, a ground network outer edge busbar 7, and a deep grounding well 5 and a shallow grounding well 6.

[0039] The top-capacity grounding grid area, high-voltage feeder grounding grid area, tower grounding grid area, outer edge busbar of the grounding grid, deep grounding wells, and shallow grounding wells form a closed current discharge system through welding, conductor connections, and other methods. The top-capacity grounding grid area, as the core grounding grid, carries most of the earth current; the high-voltage feeder grounding grid area guides the current to flow into the earth efficiently; the tower grounding grid area is welded to the top-capacity grounding grid area to ensure reliable grounding and lightning protection of the tower; the busbar is welded to the ends of all conductors to form a closed loop, connecting all grounding grids and ensuring uniform current distribution; the deep grounding wells are connected to the double-layer network of the tuning pavilion grounding grid area, and the shallow wells are distributed along the outer edge of the grounding grid, connected to the core grounding grid or busbar through conductors or connectors to diffuse and balance the current.

[0040] In existing technologies, the connection methods of these components are relatively simple, the grounding grid structure is planar and singular, the conductor spacing in the high-voltage feeder area is based on experience design, the connection method of the tower grounding grid area is not optimized, the busbar does not consider current distribution optimization, the deep and shallow grounding wells are scattered, and they do not form an efficient connection with the core area, making it difficult to effectively reduce grounding losses overall.

[0041] The adaptive partitioned and hierarchically optimized high-efficiency longwave antenna ground network system provided in this application embodiment further includes one or more tuning pavilion ground network areas 3, which adopt a vertically hierarchical double-layer structure, such as... Figure 2 As shown. The structure includes:

[0042] Upper grounding grid: Multiple first radial conductors are laid radially in the shallow ground layer (e.g., 0.3m) to receive and initially guide the large current from the tuning pavilion.

[0043] Lower-layer reinforcing grounding grid: Located vertically below the upper-layer grounding grid, it consists of multiple second radial conductors laid radially deep in the soil (e.g., 1m-5m). The conductor materials or processing techniques of the lower-layer grounding grid give it superior conductivity or corrosion resistance compared to the upper-layer conductors (e.g., using larger diameter copper wire). The main function of this layer is to more efficiently guide the core high current deep into the earth and resist long-term corrosion of the deep soil.

[0044] Vertical connectors: Through multiple conductive connectors, such as deeply buried copper rods or copper wires, the upper and lower grounding grids and the grounding well 5 are reliably electrically connected to form a three-dimensional current discharge structure.

[0045] The very long wave antenna ground network system provided in this application significantly enhances the current discharge capability of the high current area by setting a double-layer three-dimensional ground network in the core area of ​​the tuning pavilion, effectively reducing the grounding resistance of this part, thereby reducing the total loss resistance of the entire system and improving the antenna radiation efficiency.

[0046] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the tuning pavilion ground network area is provided with multiple concentric loop conductors on the basis of the radial radiating conductors. The multiple concentric loop conductors and the radial conductors are electrically welded at the intersection points to suppress the instantaneous change of local ground potential from exceeding a preset threshold.

[0047] Specifically, the structure of tuning pavilion ground grid area 3 is reinforced into a composite birdcage structure. Multiple concentric loop conductors are added to the traditional radial conductors. All loop conductors are electrically welded to all radial conductors at their intersections, forming a "birdcage"-like grid structure, such as... Figure 3 As shown. This composite structure greatly improves the potential distribution in the high current density area below the tuning pavilion, forcing the formation of an approximately equipotential surface, effectively suppressing the sharp rise in local ground potential, and thus significantly reducing the grounding resistance of the core feeder area.

[0048] The very long wave antenna ground network system provided in this application creates a very stable equipotential region through the composite birdcage structure of the tuning pavilion ground network. Under high power operating conditions, it can better stabilize the ground potential of the feed point, which is beneficial to the stable operation of the entire antenna system.

[0049] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the laying spacing of the multiple parallel conductors in the high voltage feeder ground network area is arranged using a nonlinear optimization based on a mathematical model of ground current density.

[0050] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the spacing of its multiple parallel conductors is arranged using a nonlinear optimization based on a mathematical model of ground current density, specifically including:

[0051] Based on the physical reality that the ground current density decreases nonlinearly from directly below the feeder to a distance, conductors with different densities are configured in different areas to make the density of the ground grid conductors match the actual intensity distribution of the ground current.

[0052] Specifically, in the high-voltage feeder grounding grid area 2 of the system, the spacing of the multiple parallel conductors has abandoned the simple arithmetic progression pattern and instead adopted a mathematical model based on ground current density.J ( x The nonlinear optimized layout of the high-voltage feeder is determined by the distance from the center axis of the ground projection to both sides, representing the spacing between adjacent conductors. d n It is a precisely calculated, non-linearly changing value, such as... Figure 4 As shown in the diagram, this arrangement ensures that the density of the grounding wires closely matches the actual distribution of ground current intensity. This design precisely addresses the physical reality of the nonlinear decay of ground current density from directly below the feeder to distant locations. By configuring conductors of different densities in different areas, it achieves the most efficient use of conductor materials. Compared to a simple "unequal spacing" design, the impedance transition is smoother and the losses are lower.

[0053] The very long wave antenna ground network system provided in this application embodiment achieves precise matching between the conductor distribution and the actual current density distribution of the ground network through precise optimization design based on a mathematical model of the high voltage feeder ground network. This results in the optimal layout of the conductors, concentrating conductor materials in the most needed areas and avoiding unnecessary material waste in current-sparse areas. Consequently, the overall grounding loss resistance is significantly reduced, and the antenna radiation efficiency is effectively improved. This effectively controls the total project cost while ensuring performance.

[0054] Optionally, the very long wave antenna ground network system provided in this application embodiment further includes a ground network health status intelligent monitoring module, which includes:

[0055] Multiple embedded sensors are distributed at the grounding grid nodes to collect soil resistivity, conductor test potential and grounding resistance;

[0056] The data acquisition and transmission unit is used to collect the data collected by the multiple embedded sensors and upload it wirelessly or via wired means;

[0057] The central processing unit is used to assess the current health status of the grounding network based on the data collected by the multiple embedded sensors, and automatically generate early warning information when the health status is abnormal.

[0058] Specifically, a ground network health status intelligent monitoring module is further integrated into the aforementioned ground network system. This module includes:

[0059] Multiple embedded sensors distributed at key nodes of the grounding grid are used to collect key data such as soil resistivity, conductor corrosion potential, and grounding resistance.

[0060] The data acquisition and transmission unit is responsible for collecting sensor data and uploading it wirelessly or via wired connection.

[0061] The central processing unit runs analysis algorithms to assess the current health status of the grounding network, compares it with the design baseline, and can automatically generate early warning information when anomalies are detected.

[0062] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the central processing unit adopts a dynamic evaluation model, adjusts the monitoring frequency of the ground network according to the real-time changes of monitoring data, prioritizes key nodes, and actively optimizes the allocation of monitoring resources.

[0063] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the data acquisition and transmission unit further includes a dynamic sampling adjustment module. The dynamic sampling adjustment module is used to dynamically adjust the sampling frequency according to the real-time current density of the ground network. The adjustment range of the sampling frequency is between 1Hz and 100Hz.

[0064] Optionally, in the very long wave antenna ground network system provided in this application embodiment, the vertical connector adopts a combination structure of multi-strand copper cable and copper rod, and the surface of its welding point is coated with an anti-corrosion coating.

[0065] The very long wave antenna ground network system provided in this application embodiment, through the introduction of an intelligent monitoring module, enables managers to conduct real-time, quantitative health status assessment and trend prediction of a large-scale concealed ground network project for the first time, realizing the transformation from passive maintenance to proactive and predictive maintenance, and greatly ensuring the reliable operation of the antenna system within its decades-long design life.

[0066] The operation of the VLF antenna ground network system provided in this application will be described below with specific embodiments. (Refer to...) Figure 1 This application provides an adaptive, partitioned, and hierarchically optimized high-efficiency very long wave antenna ground network system, with a total footprint of 1600m × 1800m. The system is generally arranged in a rectangular or square shape and consists of the following parts:

[0067] 1. Top Capacitor Line Grounding Area 1: This area is located below the antenna top capacitor line and is the largest area. Multiple (e.g., 130) copper wires with a diameter of 4mm can be laid parallel to the direction of the top capacitor line at equal intervals of 10m, with a burial depth of 0.3m.

[0068] 2. High-voltage feeder grounding area 2: This area is located below the high-voltage feeder and is, for example, 300m wide. Its conductors are laid parallel to the high-voltage feeder and perpendicular to the conductors in the top-capacity feeder grounding area; all intersections must be reliably welded. (Refer to...) Figure 4 Surface current density J ( x Along the direction perpendicular to the feed line x It exhibits a roughly exponential decay, which can be approximated by the following formula.

[0069]

[0070] in, J0 is directly below the feeder. x Peak current density at =0 α It is the attenuation coefficient, which is determined by factors such as soil electrical conductivity and frequency.

[0071] To achieve the optimal layout, starting from the central axis ( n =0) Start laying wires to both sides, the first n Article and No. n +1 spacing between wires d n = x n+1 x n Instead of fixed or arithmetic values, the values ​​are determined by solving an optimization problem. The goal is to satisfy the condition that the power loss Δ caused by current flowing into the ground between the two conductors is minimized. P loss , n Not exceeding a certain threshold Under the constraint of ", the spacing d n As large as possible. Power loss can be obtained by integration.

[0072]

[0073] in This refers to soil resistivity. By iteratively solving the above equation, a set of nonlinear, outwardly increasing spacing values ​​can be obtained. d 0, d 1, d 2,...}. For example... Figure 4 As shown, the wires near the center are very dense, while the spacing between the wires far from the center increases rapidly, thus saving a considerable amount of copper material compared to the traditional linear increment method while ensuring performance.

[0074] 3. Tuning Pavilion Ground Grid Area 3: Refer to Figure 1 and Figure 2 Near each of the two tuning pavilions, a square ground grid area with a side length of, for example, 120m is set up. The core innovation lies in its vertical double-layer three-dimensional structure, such as... Figure 2 As shown:

[0075] Upper grounding grid 3a: Buried at a depth of 0.3m, consisting of 50 copper wires 3a1 with a diameter of 4mm, laid evenly in a radial pattern centered on the outlet of the high-voltage through-wall insulator of the tuning pavilion. The outer edge is framed by a ring of thick copper wire 3a2 with a diameter of 6mm.

[0076] Lower layer reinforced grounding grid 3b: Buried at a depth of, for example, 2.0m, located directly below the upper layer grounding grid. Its structure is similar to the upper layer, but it uses a higher-performance copper wire 3b1, for example, a copper wire with a diameter of 6mm.

[0077] Vertical connector 3c: At least at the four corners and the central area, copper rods or multi-strand copper cables with a diameter of not less than 10mm are used to firmly weld the upper frame copper wire 3a2, the lower frame copper wire 3b1, and the grounding body of the grounding well 5. This three-dimensional structure allows the huge ground current from the tuning pavilion to be first received by the upper ground grid, and then quickly introduced into the deeper, more conductive lower ground grid and grounding well through the vertical connector, greatly reducing the grounding resistance of the core area and protecting the shallow ground grid.

[0078] 4. Tuning Pavilion Ground Grid Area 3: Refer to Figure 1 and Figure 2 At the two tuning pavilions in the center of the site, a tuning pavilion grounding network with a composite birdcage structure was installed. Each tuning pavilion grounding network is located within a 120m x 120m square area, centered on the tuning pavilion's power supply point.

[0079] Radial conductors: 64 conductors are laid out radially from the center point.

[0080] Loop conductor: With the center point as the center, set up 5 concentric closed loop conductors with radii of 10m, 20m, 30m, 40m and 50m respectively.

[0081] All loop and radial conductors are securely welded at each intersection, forming an extremely robust and electrically balanced mesh structure.

[0082] 5. Tower grounding grid area 4: Around the base of each antenna support tower, four copper wires, each 20m long and 4mm in diameter, are laid radially. One end is welded to the reserved interface on the tower base, and the other end is welded to the nearest top-capacity grounding grid conductor to ensure reliable grounding and lightning protection of the tower.

[0083] 6. Grounding Deep Wells 5 and Grounding Shallow Wells 6: Two grounding deep wells 5, with a depth of 25-30m, are installed near each of the two tuning pavilion grounding grid areas. These deep wells 5 are connected to the groundwater layer and are linked to the double-layer network of the tuning pavilion grounding grid area. Eighty grounding shallow wells 6, each 5m deep, are evenly installed along the busbar 7 at the outer edge of the entire grounding grid to improve the grounding effect in the edge area.

[0084] 7. Busbar 7: A busbar consisting of 40mm×4mm copper strips is laid along the outermost perimeter of the entire grounding grid, buried at a depth of 0.3m. The ends of all conductors in the top-capacity grounding grid and the high-voltage feeder grounding grid must be welded to the busbar to form a closed loop and balance the potential of the entire grounding grid.

[0085] 8. Intelligent monitoring module for the health status of the ground network: Refer to... Figure 4 This is another functional innovation of this application.

[0086] Sensor network: Sensors are buried in key locations. For example, multiple sets of four-probe soil resistivity sensors and long-period corrosion potential sensors are buried near the lower network of the tuning pavilion grounding network; similar sensors are also deployed in the central area of ​​the high-voltage feeder grounding network and near the grounding well.

[0087] Data acquisition unit: Each sensor or group of sensors is equipped with a low-power data acquisition unit, which is responsible for signal amplification and analog-to-digital conversion.

[0088] Data transmission network: Low-power wide area network technologies such as LoRa or NB-IoT can be used to wirelessly transmit the collected data to the aggregation node on the ground.

[0089] Central Processing and Display Platform: A server and software platform are located in the main control room to receive, store, and analyze all data, and display the health status of each area of ​​the ground network through a graphical user interface (GUI). The platform has built-in algorithms that can perform performance evaluation based on resistivity changes and corrosion rates, using the following formula:

[0090]

[0091] in for t Grounding resistance at any given time As initial values, the function f Soil resistivity describes the change of grounding resistance over time. and wire diameter The dependence (reduced due to corrosion). When the calculated The system will automatically sound an alarm when the warning line is exceeded.

[0092] The active monitoring process of the intelligent monitoring module for the health status of the ground network includes:

[0093] a) Data Fusion: A high-speed data interface is established between the central processing and display platform of the intelligent monitoring module for the grounding grid health status and the antenna main tuning control system. This expands the functionality of the central processing and display platform. Utilizing long-term accumulated sensor data (soil resistivity, temperature and humidity, corrosion potential, grounding resistance, etc.), it establishes a mathematical model that dynamically predicts the grounding resistance of the grounding grid through machine learning algorithms. This model predicts the grounding resistance a short time later, Δt, based on historical data trained on it, with the current parameters as input.

[0094] b) Introduction of Feedforward Control Model: A feedforward control model based on the ground grid state is introduced into the main tuning control algorithm. This model receives real-time data from the monitoring module, mainly the weighted average soil resistivity of key areas and the predicted total grounding resistance of the ground grid. This method changes the control flow. Traditional feedback control is detuned signal - controller - adjustment actuator, while the feedforward control of this invention is ground grid state prediction value - controller - adjustment actuator. The specific flow is as follows:

[0095] 1) The central processing and display platform continuously measures key parameters such as soil resistivity and grounding resistance in key areas of the grounding network based on the time-varying model of the sensor network, and actively and periodically calculates the predicted grounding resistance.

[0096] 2) The predicted value is not waiting for the antenna to detune, but is sent directly to the automatic tuning controller in the tuning pavilion as a feedforward signal.

[0097] 3) The tuning controller has an embedded antenna system total impedance model, which calculates in advance the adjustment amount of inductance and capacitance required to maintain matching based on the received grounding resistance.

[0098] 4) The central processing unit sends precise control commands to the actuators (such as stepper motors and piezoelectric ceramic drivers) in the tuning pavilion through the control interface. The controller drives the stepper motors and other actuators to smoothly and pre-selectively complete the fine-tuning of the tuning elements, perform dynamic compensation, and keep the antenna system "always" in the optimal matching state.

[0099] 5) The entire process forms a real-time closed-loop feedback system of ground network environment change - sensor perception - model prediction - dynamic compensation calculation - automatic tuning execution, ensuring that the antenna system is always in the best impedance matching state under any environmental conditions.

[0100] c) Algorithm Optimization: When a rapid change in the weighted average soil resistivity of a key area is detected (e.g., a rapid decrease due to rainfall), the feedforward model predicts the upcoming trend and magnitude of antenna impedance changes based on a pre-established "soil resistivity-total antenna impedance" mapping. Before a significant change occurs in the traditional VSWR feedback signal, the main tuning controller pre-adjusts the tuning components (such as tuning inductors and capacitors) based on this feedforward prediction signal. Traditional feedback control is still retained, but its role is downgraded from the main controller to correction and robustness assurance. It is mainly used to correct minor deviations in the feedforward model or to handle sudden disturbances not covered by the model, ensuring absolute system stability and accurately eliminating remaining minor mismatch errors. A complete adaptive tuning and collaborative optimization system is constructed through a dual-loop control strategy combining ground grid state feedforward prediction and traditional electrical parameter feedback.

[0101] The above technical solution elevates the intelligent monitoring module for the health status of the ground network from a passive monitoring and early warning system to an active, key component participating in the closed-loop control of the antenna system, thereby achieving coordinated optimization of ground network and antenna tuning. In the above embodiments, the descriptions of each embodiment have their own emphasis; parts not detailed in a particular embodiment can be found in the relevant descriptions of other embodiments.

[0102] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0103] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some service interface; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0104] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0105] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0106] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Those skilled in the art will readily conceive of embodiments of this disclosure upon considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described herein. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A very long wave antenna grounding network system, comprising a top-capacity line grounding network area, a high-voltage feeder grounding network area, a tower grounding network area, an outer edge busbar of the grounding network, a deep grounding well, and a shallow grounding well, characterized in that, It also includes one or more tuning pavilion ground grid areas; The tuning pavilion grounding grid area adopts a vertically layered double-layer structure, including an upper grounding grid, a lower reinforced grounding grid, and vertical connectors; The upper grounding grid consists of multiple first radial conductors laid radially in the shallow ground layer to receive and initially guide the current from the tuning pavilion; The lower-level reinforced grounding grid consists of multiple second radial conductors laid radially deep in the ground to guide the core high current into the depths of the earth. The vertical connector electrically connects the upper grounding grid and the lower reinforced grounding grid through multiple conductor connectors; The tuning pavilion ground grid area is provided with multiple concentric ring conductors on the basis of radial conductors. The multiple concentric ring conductors and the radial conductors are electrically welded at the intersection point to suppress the instantaneous change of local ground potential from exceeding a preset threshold. In the high-voltage feeder grounding grid area, the laying spacing of its multiple parallel conductors is arranged using a nonlinear optimization based on a mathematical model of ground current density. It also includes a ground network health status intelligent monitoring module, which includes: Multiple embedded sensors are distributed at grounding grid nodes to collect soil resistivity, conductor corrosion potential and grounding resistance; The data acquisition and transmission unit is used to collect the data collected by the multiple embedded sensors and upload it wirelessly or via wired means; The central processing unit is used to assess the current health status of the grounding network based on the data collected by the multiple embedded sensors, and automatically generate early warning information when the health status is abnormal.

2. The very low wave antenna ground network system as described in claim 1, characterized in that, The spacing between its multiple parallel conductors is arranged using a nonlinear optimization based on a mathematical model of ground current density, specifically including: Based on the physical reality that the ground current density decreases nonlinearly from directly below the feeder to a distance, conductors with different densities are configured in different areas to make the density of the ground grid conductors match the actual intensity distribution of the ground current.

3. The very low wave antenna ground network system as described in claim 1, characterized in that, The central processing unit adopts a dynamic evaluation model, which adjusts the monitoring frequency of the ground network based on the real-time changes in monitoring data, prioritizes key nodes, and proactively optimizes the allocation of monitoring resources.

4. The very low wave antenna ground network system as described in claim 1, characterized in that, The data acquisition and transmission unit also includes a dynamic sampling adjustment module, which is used to dynamically adjust the sampling frequency according to the real-time current density of the grounding grid. The adjustment range of the sampling frequency is between 1Hz and 100Hz.

5. The very low wave antenna ground network system as described in claim 1, characterized in that, The vertical connector adopts a combination structure of multi-strand copper cable and copper rod, and its welding point surface is coated with an anti-corrosion coating.

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