Non-excavation detection device for grounding grid of power transmission tower

Abstract

The invention provides a non-excavation detection device for a grounding grid of a power transmission tower, and belongs to the technical field of detection devices.The system comprises a detection module, a hardware development module, a software development module and a device module, and the detection requirement is obtained, the detection target and range are determined, and a corresponding measurement scheme is designed; the hardware module selects a proper measurement module for signal acquisition, the software module realizes data processing and analysis, and finally feeds back a result to a user, so that non-excavation and real-time detection is realized in the whole process, the safety and the effectiveness of the grounding grid are ensured, potential safety hazards caused by power failure and excavation are avoided, the safety of equipment and personnel is ensured, and the safety of the equipment and the personnel is ensured. The detection result is rapidly obtained, the detection time is shortened, the working efficiency is improved, and the measurement precision and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a trenchless detection device for a grounding grid of a power transmission tower. Background Art

[0002] In modern power systems, the safety of transmission tower grounding grids is crucial. Failures in the grounding system can lead to equipment damage, loss of life, and overall power system instability. Therefore, developing efficient and reliable detection technologies to ensure the effectiveness and safety of grounding grids is crucial. Traditional methods often require excavation and power outages, disrupting operations. Manual intervention can also affect detection accuracy and reduce flexibility.

[0003] Therefore, the present invention provides a trenchless detection device for a grounding grid of a power transmission tower. Summary of the Invention

[0004] The present invention provides a trenchless detection device for a transmission tower grounding grid. By obtaining detection requirements, determining detection targets and scopes, and designing corresponding measurement schemes, the hardware module selects a suitable measurement module for signal acquisition, and the software module implements data processing and analysis, and ultimately feeds back the results to the user. The entire process achieves trenchless, real-time detection, ensuring the safety and effectiveness of the grounding grid, avoiding safety hazards caused by power outages and excavation, protecting the safety of equipment and personnel, quickly obtaining detection results, adapting to different detection requirements and environments, reducing detection time, improving work efficiency, and enhancing measurement accuracy and reliability.

[0005] The present invention provides a trenchless detection device for a transmission tower grounding grid, comprising: Detection module: obtains detection requirements and determines detection targets and detection ranges corresponding to each detection target according to the detection requirements; Hardware development module: designs a measurement plan according to the detection target and detection range, selects a measurement module according to the measurement plan, and develops hardware based on the measurement plan and measurement module; Software development module: Determine software functions based on detection requirements and hardware development, determine data processing algorithms based on the software functions, and then carry out software development; Device module: Combining the hardware development results with the software development results to come up with a design plan and produce a detection device.

[0006] The present invention provides a trenchless detection device for a transmission tower grounding grid, including a detection module, comprising: The first detection target unit is configured to obtain relevant personnel of the transmission tower grounding network, determine the first detection requirement based on the relevant personnel, and clarify the first detection target; Second inspection target unit: obtain the industry standard of the transmission tower grounding network, determine the second inspection requirements, and clarify the second inspection objectives; The third inspection target unit: obtains historical project data of the transmission tower grounding network, determines the third inspection requirements, and defines the third inspection targets; The detection range determining unit is configured to classify the first detection target, the second detection target, and the third detection target into functional targets and non-functional targets, and determine a detection range of each detection target based on the functional targets and the non-functional targets.

[0007] The present invention provides a trenchless detection device for a transmission tower grounding grid, and a hardware development module, comprising: Solution determination unit: determines a corresponding measurement method according to each detection target and the corresponding detection range, performs connection analysis between detection targets, and designs a measurement solution based on the connection analysis results and the corresponding measurement method; Development unit: Determine the measurement module based on the measurement plan and detection target, determine the placement position according to the measurement module and measurement plan, draw a hardware detection diagram according to the placement position, and use the hardware detection diagram to develop the hardware of the grounding grid detection device.

[0008] The present invention provides a trenchless detection device for a transmission tower grounding grid, and a scheme determination unit, comprising: First connection block: performing causal analysis on each detection target, determining the causal relationship between detection targets, and performing a first connection on corresponding measurement methods based on the causal relationship; Second connection block: performing correlation analysis on each detection target, determining correlation relationships between detection targets, and performing second connection on corresponding measurement methods based on the correlation relationships; Remaining connection block: Perform dependency analysis on each detection target, determine the dependency connection, and make the third connection. Similarly, perform feedback loop analysis on each detection target, determine the feedback loop connection, and make the fourth connection. Perform hierarchical relationship analysis on each detection target, determine the hierarchical connection, and make the fifth connection. Comprehensive connection block: connects all measurement methods according to the first connection, the second connection, the third connection, the fourth connection and the fifth connection to form a measurement plan.

[0009] The present invention provides a trenchless detection device for a transmission tower grounding network and a software development module, comprising: Function determination unit: Based on the hardware development results, determine the hardware limitations and hardware capabilities, list the required software functions based on the detection requirements and hardware capabilities, and divide the software functions into components to obtain signal generation components, data acquisition components, data processing components, and user interaction components; Signal modulation unit: uses a signal generation component to modulate the power harmonic signal to be sent, and sends the modulated power harmonic signal to the grounding grid; Algorithm unit: receiving the returned harmonic signal through the data acquisition component, determining a data processing algorithm according to the detection target and the measurement scheme, and using the data processing algorithm to filter the returned harmonic signal to obtain a returned signal; Judgment unit: uses the data processing component to determine the attenuation value of the return signal, simulates the attenuation value through the path-finding algorithm, and determines the number of breakpoints in the transmission tower grounding network; Output unit: outputs the breakpoint quantity from the user interaction component to perform software development.

[0010] The present invention provides a trenchless detection device for a transmission tower grounding grid, including an algorithm unit, comprising: List determination block: sorts the return harmonic signals received by the harmonic receiving component according to the time sequence and generates a return signal list in the time series; A primary filtering block: filtering out the return harmonic signal data whose return harmonic signal frequency is consistent with the transmitted power harmonic frequency from the return signal list, to obtain a primary filtered return signal list; Secondary filtering block: Filters out the return harmonic signal data whose return harmonic signal amplitude is proportional to the transmitted power harmonic amplitude from the primary filtering return signal list to obtain the secondary filtering return signal list; Third-order filtering block: Filters out the return harmonic signal data whose phase length differs from the sent phase length by less than the phase threshold from the second-order filtering return signal list, and obtains the third-order filtering return signal list. The third-order filtering return signal list is the final return signal.

[0011] The present invention provides a trenchless detection device for a transmission tower grounding grid, including a judgment unit, comprising: Calculation block: Calculates the power harmonic transmission distance based on the attenuation of the return signal: ,in, represents the amplitude at position x and time t; represents the initial amplitude at the measurement point source; represents a constant related to spatial attenuation; represents a constant related to time decay; represents the phase function related to position and time; is the distance that power harmonics propagate; Marking block: Based on the propagation distance of power harmonics, the path is found by using the depth-first algorithm. When the path cannot be found at any leaf node, the current leaf node is marked and the distance from the current leaf node to the source point is recorded. Add parameter block: In the process of pathfinding based on the depth-first algorithm, the corresponding position of the power harmonic signal with phase anomaly is recorded. Based on the phase anomaly distance, the corrosion degree parameter is added to the corresponding position and marked in the corresponding leaf node branch. Position determination block: Based on the pathfinding results, the path is explored according to the pre-buried grounding network path to find the breakpoint location in the transmission tower grounding network; Integrity judgment block: judge the integrity of the transmission tower grounding network based on the number of breakpoints in the transmission tower grounding network. If the number of breakpoints in the transmission tower grounding network is greater than or equal to the preset value, it indicates that the current transmission tower grounding network is damaged. If the number of breakpoints in the transmission tower grounding network is less than the preset value, it indicates that the current transmission tower grounding network damage has not reached the fault standard.

[0012] The present invention provides a trenchless detection device for a transmission tower grounding grid, and a device module, comprising: Production unit: Ensure that the hardware development results match the software development results, confirm that the hardware development results can support the required software functions, write comprehensive design documents, describe the hardware and software design plans in detail, assemble the hardware development results and software development results according to the design plans, and then produce the detection device.

[0013] Compared with the existing technology, the beneficial effects of this application are as follows: by obtaining detection requirements, determining detection targets and scope, and designing corresponding measurement plans, the hardware module selects a suitable measurement module for signal acquisition, and the software module realizes data processing and analysis, and finally feeds back the results to the user. The entire process realizes non-excavation, real-time detection, ensures the safety and effectiveness of the grounding network, avoids safety hazards caused by power outages and excavation, ensures the safety of equipment and personnel, quickly obtains detection results, reduces detection time, improves work efficiency, and enhances measurement accuracy and reliability.

[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 The present invention provides a schematic structural diagram of a trenchless detection device for a grounding grid of a power transmission tower. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] Example 1: The embodiment of the present invention provides a trenchless detection device for a transmission tower grounding network. Figure 1 Shown, including: Detection module: obtains detection requirements and determines detection targets and detection ranges corresponding to each detection target according to the detection requirements; Hardware development module: designs a measurement plan according to the detection target and detection range, selects a measurement module according to the measurement plan, and develops hardware based on the measurement plan and measurement module; Software development module: Determine software functions based on detection requirements and hardware development, determine data processing algorithms based on the software functions, and then carry out software development; Device module: Combining the hardware development results with the software development results to come up with a design plan and produce a detection device.

[0019] In this embodiment, the detection requirements include a first detection requirement, a second detection requirement, and a third detection requirement.

[0020] In this embodiment, the detection range is determined based on functional objectives and non-functional objectives. For example, the detection range may include the resistance value, material quality, construction technology, maintenance records, etc. of the grounding grid.

[0021] In this embodiment, the measurement scheme is a specific measurement plan designed based on the measurement method and connection analysis results, including multiple measurement methods, such as resistance measurement, DC current measurement, temperature monitoring, etc.

[0022] In this embodiment, the detection targets are deeply analyzed through multiple connection blocks, including cause-and-effect analysis, correlation analysis, dependency analysis, feedback loop analysis, and hierarchical relationship analysis. Each analysis method determines different connections between the detection targets, and then these connections are integrated to form a comprehensive connection block, and finally a comprehensive measurement plan is formulated.

[0023] In this embodiment, a measurement module is a hardware component that integrates specific sensors and processing units, designed to perform specific measurement tasks. It typically includes sensors, signal processing circuits, data acquisition units, and communication interfaces to facilitate the collection, processing, and transmission of measurement data. For example, a current measurement module, used to detect current changes in power harmonic transmission, may include a current sensor, amplification circuits, and an ADC (analog-to-digital converter), and transmit the data to a main controller via a communication interface.

[0024] In this embodiment, hardware development is the design and manufacture of hardware components based on the hardware detection diagram. For example, a grounding grid detection instrument integrating sensors and data acquisition modules is developed according to the hardware detection diagram.

[0025] In this embodiment, according to each detection target and its detection range, an appropriate measurement method is selected and connection analysis is performed to form a measurement plan. According to the measurement plan, the required measurement modules and placement positions are determined, a hardware detection diagram is drawn, and hardware development is then carried out.

[0026] In this embodiment, the function determination unit identifies the hardware capabilities and detection requirements, divides the required software functions into multiple components, the signal modulation unit modulates the power harmonic signal and sends it to the grounding grid, the algorithm unit receives the return signal and applies the data processing algorithm for screening, the judgment unit calculates the attenuation value of the return signal, and determines the number of breakpoints in the grounding grid through the path-finding algorithm. Finally, the result is output through the user interaction component to complete the software development.

[0027] In this embodiment, the software function is a specific software requirement determined based on the hardware capabilities and detection requirements. For example, the software functions include signal modulation, data acquisition, signal analysis, user interface display, etc. Specific functions include generating power harmonic signals of different frequencies, collecting return signals and analyzing them, etc.

[0028] In this embodiment, the data processing algorithm is an algorithm for analyzing and processing the received return signal, for example, using a fast Fourier transform (FFT) algorithm to perform frequency domain analysis on the returned harmonic signal to extract the amplitude and phase information of the signal.

[0029] In this embodiment, the design plan is a specific implementation plan for hardware and software developed based on the demand analysis, including design goals, technical routes, implementation steps, etc. For example, the design plan may include selecting a specific microcontroller, sensor model, communication protocol, and software programming language and development environment.

[0030] In this embodiment, by ensuring that the functions of the hardware and software match, verifying that the hardware can support the required software functions, writing a comprehensive design document to describe the design scheme of the hardware and software in detail to ensure the coordination between the two, and assembling the development results of the hardware and software according to the design scheme, finally producing a complete detection device.

[0031] The working principle and beneficial effects of the above technical solution are: by obtaining the detection requirements, determining the detection targets and scope, and designing the corresponding measurement plan, the hardware module selects the appropriate measurement module for signal acquisition, and the software module realizes data processing and analysis, and finally feeds the results back to the user. The entire process realizes non-excavation, real-time detection, ensures the safety and effectiveness of the grounding network, avoids safety hazards caused by power outages and excavation, ensures the safety of equipment and personnel, quickly obtains test results, reduces detection time, improves work efficiency, and enhances measurement accuracy and reliability.

[0032] Example 2: The embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, including a detection module, comprising: The first detection target unit is configured to obtain relevant personnel of the transmission tower grounding network, determine the first detection requirement based on the relevant personnel, and clarify the first detection target; Second inspection target unit: obtain the industry standard of the transmission tower grounding network, determine the second inspection requirements, and clarify the second inspection objectives; The third inspection target unit: obtains historical project data of the transmission tower grounding network, determines the third inspection requirements, and defines the third inspection targets; The detection range determining unit is configured to classify the first detection target, the second detection target, and the third detection target into functional targets and non-functional targets, and determine a detection range of each detection target based on the functional targets and the non-functional targets.

[0033] In this embodiment, the relevant personnel are personnel related to the transmission tower grounding network, including technicians, engineers, maintenance personnel, etc., for example, engineers responsible for transmission tower maintenance and technicians responsible for grounding network design in a power company.

[0034] In this embodiment, the first detection requirement is the detection requirement for the transmission tower grounding network determined based on the information of relevant personnel, for example, determining whether the resistance value of the grounding network needs to be checked to see if it meets the standard; the first detection target is a specific detection target set based on the first detection requirement, for example, ensuring that the resistance value of the grounding network is less than 4Ω.

[0035] In this embodiment, the industry standard is an industry specification and standard related to the transmission tower grounding network, such as the Technical Specification for Transmission Line Grounding Devices issued by the State Grid Corporation of China.

[0036] In this embodiment, the second inspection requirement is the inspection requirement for the transmission tower grounding network determined based on industry standards, for example, according to industry standards, checking whether the materials and construction of the grounding network comply with regulations; the second inspection target is a specific inspection target set according to the second inspection requirement, for example, confirming that the materials used in the grounding network comply with GB standards.

[0037] In this embodiment, the historical project data is inspection and maintenance data of past projects related to the transmission tower grounding grid, such as grounding grid inspection reports and maintenance records within the past five years.

[0038] In this embodiment, the third detection requirement is the detection requirement for the transmission tower grounding network determined based on historical project data, for example, analyzing historical data to determine the performance changes of the grounding network in different seasons; the third detection target is a specific detection target set according to the third detection requirement, for example, evaluating the resistance changes of the grounding network under extreme weather conditions.

[0039] In this embodiment, functional goals are detection goals that are directly related to system functions, such as ensuring that the grounding grid can effectively protect equipment in the event of a fault; non-functional goals are goals that are indirectly related to system performance, reliability, etc., such as ensuring that the maintenance cost of the grounding grid is within an acceptable range.

[0040] The working principle and beneficial effects of the above technical solution are: obtaining relevant information through three detection target units, determining detection needs and targets from personnel, industry standards and historical data respectively, classifying these targets into functional and non-functional targets, and clarifying the detection scope of each target on this basis, ensuring the comprehensiveness and pertinence of detection needs, making subsequent detection plans more accurate and effective, improving the pertinence of detection, and improving the reliability and comparability of detection results.

[0041] Example 3: The embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, and a hardware development module, including: Solution determination unit: determines a corresponding measurement method according to each detection target and the corresponding detection range, performs connection analysis between detection targets, and designs a measurement solution based on the connection analysis results and the corresponding measurement method; Development unit: Determine the measurement module based on the measurement plan and detection target, determine the placement position according to the measurement module and measurement plan, draw a hardware detection diagram according to the placement position, and use the hardware detection diagram to develop the hardware of the grounding grid detection device.

[0042] In this embodiment, the measurement method is a specific technology or tool used to obtain detection target data, for example, using a digital multimeter to measure the resistance value of the grounding grid, or using a thermal imager to detect the heat distribution of the grounding grid.

[0043] In this embodiment, the connection analysis is to analyze the relationship between the detection targets to determine how they affect or depend on each other, for example, analyzing the relationship between the resistance value of the grounding grid and its material quality to determine the increase in resistance value that may be caused by unqualified material quality.

[0044] In this embodiment, the placement position is to determine the specific installation position of the hardware component at the actual detection site, for example, installing a resistance measurement sensor near the grounding terminal of a transmission tower to facilitate acquisition of accurate data.

[0045] In this embodiment, the hardware detection diagram is a drawing that includes all hardware components and their placement positions, for example, a drawing that marks the positions of sensors, data collectors and connecting lines, showing how to arrange the hardware in the grounding grid detection device.

[0046] The working principle and beneficial effects of the above technical solution are: according to each detection target and its detection range, an appropriate measurement method is selected and connection analysis is performed to form a measurement plan. According to the measurement plan, the required measurement module and placement position are determined, a hardware detection diagram is drawn, and then hardware development is carried out, ensuring that the measurement method matches actual needs, optimizing the design of the detection device, ensuring the rationality and operability of the hardware design, and the flexible measurement plan design enables the device to adapt to different detection needs and environments.

[0047] Example 4: An embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, including a scheme determination unit, comprising: First connection block: performing causal analysis on each detection target, determining the causal relationship between detection targets, and performing a first connection on corresponding measurement methods based on the causal relationship; Second connection block: performing correlation analysis on each detection target, determining correlation relationships between detection targets, and performing second connection on corresponding measurement methods based on the correlation relationships; Remaining connection block: Perform dependency analysis on each detection target, determine the dependency connection, and make the third connection. Similarly, perform feedback loop analysis on each detection target, determine the feedback loop connection, and make the fourth connection. Perform hierarchical relationship analysis on each detection target, determine the hierarchical connection, and make the fifth connection. Comprehensive connection block: connects all measurement methods according to the first connection, the second connection, the third connection, the fourth connection and the fifth connection to form a measurement plan.

[0048] In this embodiment, causal analysis is to study the influence of one detection target on another detection target and determine the causal relationship. For example, it analyzes whether the resistance change of the grounding grid will affect the grounding safety of the equipment. If the resistance decreases, it may cause poor grounding.

[0049] In this embodiment, the causal relationship is to identify and describe the causal relationship between detection targets. For example, if the resistance of the grounding grid decreases, it may cause leakage in the equipment, thereby affecting the normal operation of the equipment.

[0050] In this embodiment, the first connection is to connect corresponding measurement methods based on causal analysis and causal relationship, for example, selecting a resistance measuring instrument to monitor the resistance of the grounding grid so as to timely discover potential grounding faults.

[0051] In this embodiment, the correlation analysis is to study the correlation between detection targets and determine the statistical relationship between them, for example, analyzing the correlation between the temperature change and the current change of the grounding grid to check whether there is a certain positive correlation or negative correlation.

[0052] In this embodiment, the correlation relationship describes the correlation between detection targets. For example, if the temperature of the grounding grid increases, it may cause the current to increase, thereby affecting the grounding effect.

[0053] In this embodiment, the second connection is to connect corresponding measurement methods based on correlation analysis and correlation connection, for example, selecting a temperature sensor and a current sensor for joint measurement so as to monitor temperature and current changes simultaneously.

[0054] In this embodiment, dependency analysis is to study the degree of dependence of one detection target on another detection target, for example, analyzing whether the performance of the grounding grid depends on the humidity of the soil. If the humidity is too low, the grounding effect may be affected.

[0055] In this embodiment, the dependency relationship describes the dependency relationship between detection targets. For example, the resistance performance of the grounding grid depends on the conductivity of the surrounding soil.

[0056] In this embodiment, the third connection is to connect corresponding measurement methods based on dependency analysis and dependency connections, for example, a soil moisture sensor is selected to monitor soil moisture in order to evaluate the performance of the grounding grid.

[0057] In this embodiment, feedback loop analysis is to study the feedback relationship between detection targets and determine how they affect each other. For example, it is to analyze whether the resistance change of the grounding grid will affect the operation of the equipment and thus affect the current feedback.

[0058] In this embodiment, the feedback loop connection describes the feedback relationship between detection targets. For example, poor grounding leads to unstable operation of equipment, and unstable operation of equipment may cause more problems in the grounding network.

[0059] In this embodiment, the fourth connection is to connect corresponding measurement methods based on feedback loop analysis and feedback loop connection, for example, to establish a feedback control system to monitor the resistance of the grounding grid and the operating status of the equipment in real time to maintain system stability.

[0060] In this embodiment, the hierarchical relationship analysis is to study the hierarchical relationship between the detection targets and determine their importance and priority. For example, the importance of different parts of the grounding grid (such as grounding electrodes, connecting wires, etc.) in the overall performance is analyzed.

[0061] In this embodiment, the hierarchical relationship describes the hierarchical relationship between detection targets. For example, the performance of the grounding electrode takes precedence over the performance of the connecting line because the grounding electrode directly affects the grounding effect.

[0062] In this embodiment, the fifth connection is to connect corresponding measurement methods based on hierarchical relationship analysis and hierarchical connection, for example, the ground electrode is monitored and maintained first to ensure that its performance is better than other parts.

[0063] In this embodiment, all measurement methods are connected to form a measurement plan, which is to integrate the results of all connection analyses to develop a complete measurement plan. For example, based on cause-and-effect analysis, correlation analysis, dependency analysis, feedback loop analysis and hierarchical relationship analysis, a complete monitoring plan is developed, including resistance measurement, temperature monitoring, soil moisture detection, etc., to ensure the safety and reliability of the grounding grid.

[0064] The working principle and beneficial effects of the above technical solution are: in-depth analysis of the detection targets is carried out through multiple connection blocks, including causal analysis, correlation analysis, dependency analysis, feedback loop analysis and hierarchical relationship analysis. Each analysis method determines the different connections between the detection targets, and then these connections are integrated to form comprehensive connection blocks, and finally a comprehensive measurement plan is formulated, which ensures the systematicness and complementarity of the measurement methods, improves the comprehensiveness and depth of the measurement plan, and improves the accuracy of detection.

[0065] Example 5: The embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid and a software development module, including: Function determination unit: Based on the hardware development results, determine the hardware limitations and hardware capabilities, list the required software functions based on the detection requirements and hardware capabilities, and divide the software functions into components to obtain signal generation components, data acquisition components, data processing components, and user interaction components; Signal modulation unit: uses a signal generation component to modulate the power harmonic signal to be sent, and sends the modulated power harmonic signal to the grounding grid; Algorithm unit: receiving the returned harmonic signal through the data acquisition component, determining a data processing algorithm according to the detection target and the measurement scheme, and using the data processing algorithm to filter the returned harmonic signal to obtain a returned signal; Judgment unit: uses the data processing component to determine the attenuation value of the return signal, simulates the attenuation value through the path-finding algorithm, and determines the number of breakpoints in the transmission tower grounding network; Output unit: outputs the breakpoint quantity from the user interaction component to perform software development.

[0066] In this embodiment, the hardware development result is the final state of the hardware design and implementation, including its functions, performance, and stability. For example, a signal generator that supports signal processing below 1kHz is developed and successfully tested multiple times to ensure that it can work stably in different environments.

[0067] In this embodiment, hardware limitations refer to the limitations of the hardware in terms of performance, processing power, storage, power consumption, etc. For example, the maximum output power of the signal generator is 5W, which cannot support higher power harmonic signals, which limits its application in certain high-load scenarios.

[0068] In this embodiment, the hardware capability refers to the functions and performance indicators that the hardware can support. For example, the maximum signal frequency that the hardware can support is 1 kHz, the sampling rate is 10 kHz, and it can process 4 channels of signals simultaneously.

[0069] In this embodiment, the power harmonic signal is a specific frequency signal used for testing, which is usually an integer multiple of a sine wave. For example, power harmonic signals with frequencies of 50 Hz, 100 Hz, and 150 Hz are emitted to test the response of the grounding grid.

[0070] In this embodiment, the returned harmonic signal is the response signal of the grounding grid to the transmitted signal, and usually contains information about reflection and attenuation. For example, after transmitting a 50 Hz power harmonic signal, the signal returned by the grounding grid may show a change in frequency components, reflecting the state of the grounding grid.

[0071] In this embodiment, the return signal is signal information obtained after data processing, which is usually used for further analysis. For example, after FFT processing, the return signal may show the attenuation value and spectrum characteristics of a specific frequency, which is convenient for subsequent judgment.

[0072] In this embodiment, screening is a process of analyzing and filtering the return signal to extract valid information. For example, by setting a threshold, frequency components with amplitudes lower than a certain standard are screened out to exclude noise signals.

[0073] In this embodiment, the number of breakpoints is the number of possible fault points in the grounding grid, which is determined by analyzing the attenuation of the return signal. For example, by analyzing the attenuation value of the return signal, if it is found that the signal attenuation exceeds a preset value, there may be two breakpoints.

[0074] In this embodiment, software development is the process of optimizing the system and enhancing its functionality based on the detection results. For example, according to the number of breakpoints outputted, the software algorithm is adjusted to improve the detection accuracy, or new functional modules are added to support more complex detection requirements.

[0075] In this embodiment, modulation includes frequency modulation, phase modulation and amplitude modulation, wherein the amplitude value of the power harmonic signal to be emitted during amplitude modulation has a minimum limit A, the maximum amplitude value of the original power harmonic signal in the grounding material is set to B, and the minimum limit A should be greater than or equal to B 1.5.

[0076] In this embodiment, the received return harmonic signals are sorted in chronological order through the list determination block to generate a time series list. The primary filtering block filters out signals with consistent frequencies to form a primary filtered return signal list. The secondary filtering block further filters signals with proportional amplitudes to obtain a secondary filtered return signal list. The tertiary filtering block filters signals according to the phase length threshold to form the final return signal.

[0077] In this embodiment, the propagation distance of the power harmonics is calculated based on the attenuation of the return signal, and the depth-first algorithm is used for pathfinding. The leaf nodes that cannot be continued are marked and the distances are recorded. During the pathfinding process, the phase abnormality signal is recorded and the corrosion parameter is added. The breakpoint location of the grounding grid is found based on the pathfinding results, and the integrity of the grounding grid is evaluated based on the number of breakpoints.

[0078] The working principle and beneficial effects of the above technical solution are: the hardware capabilities and detection requirements are identified through the function determination unit, the required software functions are divided into multiple components, the signal modulation unit modulates the power harmonic signal and sends it to the grounding grid, the algorithm unit receives the return signal and applies the data processing algorithm for screening, the judgment unit calculates the attenuation value of the return signal, and the number of breakpoints in the grounding grid is determined through the path-finding algorithm. Finally, the results are output through the user interaction component to complete the software development, improve the efficiency and accuracy of data processing, and enhance the reliability of detection.

[0079] Example 6: The embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, including an algorithm unit, comprising: List determination block: sorts the return harmonic signals received by the harmonic receiving component according to the time sequence and generates a return signal list in the time series; A primary filtering block: filtering out the return harmonic signal data whose return harmonic signal frequency is consistent with the transmitted power harmonic frequency from the return signal list, to obtain a primary filtered return signal list; Secondary filtering block: Filters out the return harmonic signal data whose return harmonic signal amplitude is proportional to the transmitted power harmonic amplitude from the primary filtering return signal list to obtain the secondary filtering return signal list; Third-order filtering block: Filters out the return harmonic signal data whose phase length differs from the sent phase length by less than the phase threshold from the second-order filtering return signal list, and obtains the third-order filtering return signal list. The third-order filtering return signal list is the final return signal.

[0080] In this embodiment, the return signal list is a signal sequence generated in chronological order by the return harmonic signals received by the harmonic receiving component. For example, assuming that 10 return harmonic signals are received within 1 second, the generated return signal list may be as follows: [0.5 V, 0.6 V, 0.55 V, 0.7 V, 0.65 V, 0.8 V, 0.75 V, 0.9 V, 0.85 V, 0.95 V].

[0081] In this embodiment, the once-filtered return signal list is a new signal list formed by filtering out the return harmonic signal data that is consistent with the transmitted power harmonic frequency from the return signal list. For example, if the transmitted power harmonic frequency is 50 Hz, only some of the signals in the return signal list have a frequency of 50 Hz. After filtering, the once-filtered return signal list is obtained: [0.5 V, 0.7 V, 0.9 V].

[0082] In this embodiment, the secondary filtered return signal list is a new signal list formed by filtering out the return harmonic signal data whose amplitudes are proportional to the amplitudes of the transmitted power harmonics from the primary filtered return signal list. For example, assuming that the amplitude of the transmitted power harmonics is 1V, the signals whose amplitudes are proportional to 1V in the primary filtered return signal list are filtered to obtain the secondary filtered return signal list: [0.5 V, 0.7 V] (assuming that the ratios of the amplitudes of these signals to 1V are 0.5 and 0.7).

[0083] In this embodiment, the tertiary filtered return signal list is a new signal list formed by filtering out the return harmonic signal data whose phase length differs from the sent phase length by less than the phase threshold from the secondary filtered return signal list. For example, assuming that the sent phase length is 30° and the phase threshold is 5°, the signals with phases between 25° and 35° are filtered out from the secondary filtered return signal list to obtain the tertiary filtered return signal list: [0.5 V] (assuming that only the phase of this signal is within the allowable range).

[0084] The working principle and beneficial effects of the above technical solution are as follows: the received return harmonic signals are sorted in chronological order through the list determination block to generate a time series list; the primary filtering block filters out signals with consistent frequencies to form a primary filtered return signal list; the secondary filtering block further filters signals with proportional amplitudes to obtain a secondary filtered return signal list; the tertiary filtering block filters the signals according to the phase length threshold to form the final return signal, thereby ensuring the accuracy and reliability of the signal and improving the reliability and stability of the entire detection system.

[0085] Example 7: An embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, wherein the judgment unit includes: Calculation block: Calculates the power harmonic transmission distance based on the attenuation of the return signal: ,in, represents the amplitude at position x and time t; represents the initial amplitude at the measurement point source; represents a constant related to spatial attenuation; represents a constant related to time decay; represents the phase function related to position and time; is the distance that power harmonics propagate; Marking block: Based on the propagation distance of power harmonics, the path is found by using the depth-first algorithm. When the path cannot be found at any leaf node, the current leaf node is marked and the distance from the current leaf node to the source point is recorded. Add parameter block: In the process of pathfinding based on the depth-first algorithm, the corresponding position of the power harmonic signal with phase anomaly is recorded. Based on the phase anomaly distance, the corrosion degree parameter is added to the corresponding position and marked in the corresponding leaf node branch. Position determination block: Based on the pathfinding results, the path is explored according to the pre-buried grounding network path to find the breakpoint location in the transmission tower grounding network; Integrity judgment block: judge the integrity of the transmission tower grounding network based on the number of breakpoints in the transmission tower grounding network. If the number of breakpoints in the transmission tower grounding network is greater than or equal to the preset value, it indicates that the current transmission tower grounding network is damaged. If the number of breakpoints in the transmission tower grounding network is less than the preset value, it indicates that the current transmission tower grounding network damage has not reached the fault standard.

[0086] In this embodiment, the depth-first pathfinding algorithm is a graph traversal algorithm that starts from a node and goes as deep as possible to the leaf nodes of each branch until it is impossible to continue, and then backtracks to the previous node to continue exploring. For example, in the path of the transmission tower grounding grid, starting from the source point, it goes deep along a path until it encounters a breakpoint or a node that cannot be continued, and then returns to the previous node to try other paths.

[0087] In this embodiment, the corrosion parameter is used to describe the degree of attenuation of the signal during propagation, and is usually related to the intensity or frequency change of the phase abnormality signal. For example, if the signal amplitude detected at a certain location is significantly lower than the expected value, the corrosion parameter of the location can be recorded as 3 (indicating severe corrosion) and used in subsequent analysis.

[0088] In this embodiment, the phase anomaly distance refers to the distance at which the phase of the signal changes abnormally during the propagation process, and is usually used to judge the propagation quality of the signal. For example, if the signal phase change at a distance of 10 meters from the source exceeds the set threshold, the phase anomaly distance at this location is 10 meters.

[0089] In this embodiment, the fault criterion is a preset condition used to determine whether there is a fault in the transmission tower grounding grid, which is usually based on the number of breakpoints or other performance indicators. For example, if the preset value is 5, it means that if the number of breakpoints in the grounding grid is greater than or equal to 5, then the grounding grid is considered to be faulty.

[0090] In this embodiment, the current leaf node is the node currently being processed in the depth-first algorithm. If the node has no child nodes or cannot be explored further, it is called the current leaf node. For example, in the pathfinding process, if the current node is a breakpoint and has no other connections, the node is marked as the current leaf node.

[0091] In this embodiment, the source point is the starting point of signal propagation, which is usually the emission source of power harmonics, for example, the power supply equipment in the grounding grid system of the transmission tower, where the power harmonic signal is emitted.

[0092] In this embodiment, phase anomaly refers to the phenomenon that the phase of a signal changes abnormally during propagation, which usually reflects signal attenuation or interference. For example, at a certain measurement point, the phase change of the signal exceeds a set threshold, indicating that a phase anomaly exists at that location.

[0093] The working principle and beneficial effects of the above technical solution are as follows: the propagation distance of the power harmonics is calculated based on the attenuation of the return signal, the path is found using the depth-first algorithm, the leaf nodes that cannot be continued are marked and the distance is recorded, the phase abnormality signal is recorded and the corrosion parameter is added during the path finding process, the breakpoint position of the grounding grid is found according to the path finding results, the integrity of the grounding grid is evaluated based on the number of breakpoints, and it is determined whether the fault standard is met, which helps to detect potential faults in a timely manner and ensure the safety of the grounding grid.

[0094] Example 8: An embodiment of the present invention provides a trenchless detection device for a transmission tower grounding grid, the device module comprising: Production unit: Ensure that the hardware development results match the software development results, confirm that the hardware development results can support the required software functions, write comprehensive design documents, describe the hardware and software design plans in detail, assemble the hardware development results and software development results according to the design plans, and then produce the detection device.

[0095] In this embodiment, matching refers to the compatibility and interoperability between hardware and software, ensuring that the hardware can support the functions required by the software. For example, if the software needs to collect data through sensors, then the hardware must be equipped with appropriate sensors and be able to effectively transmit data with the software.

[0096] In this embodiment, the design document is a document that records the hardware and software design plan in detail, including system architecture, component selection, interface definition, functional requirements, etc. For example, the design document may include a hardware circuit diagram, a software module structure diagram, a data flow diagram, and a functional description of each component.

[0097] In this embodiment, assembly is the integration of hardware components and software modules according to the design plan to form a complete detection device. For example, during the assembly process, sensors, circuit boards and other hardware components are connected, and the software is uploaded to the microcontroller to ensure that all parts can work together.

[0098] The working principle and beneficial effects of the above technical solution are: by ensuring the functional matching of hardware and software, verifying that the hardware can support the required software functions, writing a comprehensive design document to describe the design scheme of hardware and software in detail, ensuring the coordination between the two, assembling the development results of hardware and software according to the design scheme, and finally producing a complete detection device to ensure that its performance meets expectations, thereby enhancing the reliability and stability of the detection device.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A trenchless detection device for a power transmission tower grounding grid, characterized in that: include: Detection module: obtains detection requirements, and determines detection targets and detection ranges corresponding to each detection target according to the detection requirements; Hardware development module: designing a measurement scheme according to the detection target and detection range, selecting a measurement module according to the measurement scheme, and developing hardware based on the measurement scheme and the measurement module; Software development module: Determine software functions based on detection requirements and the hardware development, determine data processing algorithms based on the software functions, and then carry out software development; Device module: Combining the hardware development results with the software development results to arrive at a design plan and produce a detection device.

2. A trenchless detection device for a power transmission tower grounding grid according to claim 1, characterized in that: Detection module, including: The first detection target unit: obtains relevant personnel of the transmission tower grounding network, determines the first detection requirement based on the relevant personnel, and clarifies the first detection target; Second detection target unit: obtain the industry standard of the transmission tower grounding network, determine the second detection requirements, and clarify the second detection target; The third detection target unit: obtain the historical project data of the transmission tower grounding network, determine the third detection requirements, and clarify the third detection targets; A detection range determination unit is configured to classify the first detection target, the second detection target and the third detection target into functional targets and non-functional targets, and determine a detection range of each detection target based on the functional targets and the non-functional targets.

3. A trenchless detection device for a power transmission tower grounding grid according to claim 1, characterized in that: Hardware development module, including: A scheme determination unit: determining a corresponding measurement method according to each detection target and a corresponding detection range, performing connection analysis between detection targets and detection targets, and designing a measurement scheme based on the connection analysis result and the corresponding measurement method; Development unit: determine the measurement module based on the measurement scheme and the detection target, determine the placement position according to the measurement module and the measurement scheme, draw a hardware detection diagram according to the placement position, and use the hardware detection diagram to develop the hardware of the grounding grid detection device.

4. A trenchless detection device for a power transmission tower grounding grid according to claim 3, characterized in that: The program determination unit includes: First connection block: performing causal analysis on each detection target, determining the causal relationship between detection targets, and performing first connection on corresponding measurement methods based on the causal relationship; The second connection block: performing correlation analysis on each detection target, determining the correlation between the detection targets, and performing a second connection on the corresponding measurement methods based on the correlation; Remaining connection blocks: perform dependency analysis on each detection target, determine the dependency connection, and perform the third connection. Similarly, perform feedback loop analysis on each detection target, determine the feedback loop connection, perform the fourth connection, perform hierarchical relationship analysis on each detection target, determine the hierarchical connection, and perform the fifth connection. Comprehensive connection block: connects all measurement methods according to the first connection, the second connection, the third connection, the fourth connection and the fifth connection to form a measurement plan.

5. The trenchless detection device for the grounding grid of a power transmission tower according to claim 1, characterized in that: Software development modules, including: Function determination unit: Determine hardware limitations and hardware capabilities based on hardware development results, list required software functions in combination with detection requirements and hardware capabilities, divide software functions into components, and obtain signal generation components, data acquisition components, data processing components, and user interaction components; Signal modulation unit: uses a signal generation component to modulate the power harmonic signal to be sent, and sends the modulated power harmonic signal to the grounding grid; Algorithm unit: receiving the returned harmonic signal through the data acquisition component, determining the data processing algorithm according to the detection target and the measurement scheme, and using the data processing algorithm to screen the returned harmonic signal to obtain the returned signal; Judgment unit: using the data processing component to determine the attenuation value of the return signal, simulating the attenuation value through the path-finding algorithm, and judging the number of breakpoints in the grounding grid of the transmission tower; Output unit: output the breakpoint quantity from the user interaction component to carry out software development.

6. A trenchless detection device for a power transmission tower grounding grid according to claim 5, characterized in that: Algorithm unit, including: List determination block: sorting the returned harmonic signals received by the harmonic receiving component according to the time sequence, and generating a list of returned signals in the time series; Primary filtering block: filtering out the returned harmonic signal data whose returned harmonic signal frequency is consistent with the transmitted power harmonic frequency in the returned signal list, to obtain a primary filtered returned signal list; Secondary filtering block: Filter out the returned harmonic signal data whose amplitude of the returned harmonic signal is proportional to the amplitude of the transmitted power harmonic signal from the primary filtering return signal list, and obtain the secondary filtering return signal list; Third filter block: filter out the return harmonic signal data whose phase length differs from the sent phase length less than the phase threshold from the second filter return signal list, and obtain the third filter return signal list, which is the final return signal.

7. A trenchless detection device for a power transmission tower grounding grid according to claim 5, characterized in that: The judgment unit comprises: Calculation block: Calculate the power harmonic transmission distance based on the attenuation of the return signal: ,in, represents the amplitude at position x and time t; represents the initial amplitude at the measurement point source; represents a constant related to spatial attenuation; represents a constant related to time decay; represents the phase function related to position and time; is the distance that power harmonics propagate; Marking block: Based on the propagation distance of power harmonics, the path is found by relying on the depth-first algorithm. When the path cannot be found at any leaf node, the current leaf node is marked and the distance from the current leaf node to the source point is recorded. Add parameter block: In the process of path finding based on the depth-first algorithm, the corresponding position of the power harmonic signal with phase anomaly is recorded, and the corrosion degree parameter is added to the corresponding position according to the phase anomaly distance, and marked to the corresponding leaf node branch; Position determination block: based on the path finding results, the path is explored according to the pre-buried grounding network path to find the breakpoint position in the transmission tower grounding network; Integrity judgment block: judge the integrity of the transmission tower grounding network based on the number of breakpoints in the transmission tower grounding network. If the number of breakpoints in the transmission tower grounding network is greater than or equal to the preset value, it indicates that the current transmission tower grounding network is damaged. If the number of breakpoints in the transmission tower grounding network is less than the preset value, it indicates that the current transmission tower grounding network damage has not reached the fault standard.

8. The trenchless detection device for the grounding grid of a power transmission tower according to claim 1, characterized in that: The device module comprises: Production unit: ensure that the hardware development results match the software development results, confirm that the hardware development results can support the required software functions, write comprehensive design documents, describe the hardware and software design plans in detail, assemble the hardware development results and software development results according to the design plans, and then produce the detection device.

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