A non-excavation detection device for the grounding grid of a transmission tower

Abstract

The present invention provides a non-excavation detection device for the grounding grid of transmission towers, belonging to the technical field of detection devices. Its system includes a detection module, a hardware development module, a software development module and a device module. By obtaining the detection requirements, determining the detection target and scope, designing the corresponding measurement scheme, the hardware module selects a suitable measurement module for signal acquisition, and the software module realizes data processing and analysis. Finally, the results are fed back to the user. The whole process realizes non-excavation and real-time detection, ensures the safety and effectiveness of the grounding grid, avoids potential safety hazards caused by power outages and excavations, guarantees the safety of equipment and personnel, quickly obtains the detection results, reduces the detection time, improves the work efficiency, and enhances the accuracy and reliability of the measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and particularly to a non-excavation detection device for the grounding grid of transmission towers. Background Art

[0002] In modern power systems, the safety of the grounding grid of transmission towers is of crucial importance. Faults in the grounding system may lead to equipment damage, personal injuries, and overall instability of the power system. Therefore, it is particularly important to develop efficient and reliable detection technologies to ensure the effectiveness and safety of the grounding grid. Traditional methods usually require excavation and power outage, which affect operation. Manual intervention also affects the accuracy of detection, and the detection flexibility is relatively low.

[0003] Therefore, the present invention provides a non-excavation detection device for the grounding grid of transmission towers. Summary of the Invention

[0004] A non-excavation detection device for the grounding grid of transmission towers provided by the present invention obtains detection requirements, determines detection targets and ranges, designs corresponding measurement schemes, selects appropriate measurement modules for signal acquisition in the hardware module, and the software module realizes data processing and analysis, and finally feeds back the results to the user. The whole process realizes non-excavation and real-time detection, ensures the safety and effectiveness of the grounding grid, avoids potential safety hazards caused by power outage and excavation, guarantees the safety of equipment and personnel, quickly obtains detection results, adapts to different detection requirements and environments, reduces detection time, improves work efficiency, and enhances the accuracy and reliability of measurement.

[0005] The present invention provides a non-excavation detection device for the grounding grid of transmission towers, comprising:

[0006] Detection module: obtaining detection requirements, and determining detection targets and corresponding detection ranges for each detection target according to the detection requirements;

[0007] Hardware development module: designing a measurement scheme according to the detection targets and ranges, selecting a measurement module according to the measurement scheme, and performing hardware development based on the measurement scheme and the measurement module;

[0008] Software development module: determining software functions based on detection requirements and the hardware development, determining data processing algorithms according to the software functions, and then performing software development;

[0009] Device module: obtaining a design scheme by integrating the results of the hardware development and the software development, and manufacturing the detection device.

[0010] The present invention provides a non-excavation detection device for the grounding grid of transmission towers, and the detection module comprises:

[0011] The first detection target unit: Obtain relevant personnel of the transmission tower grounding grid, determine the first detection requirement based on the relevant personnel, and clarify the first detection target;

[0012] The second detection target unit: Obtain the industry standards of the transmission tower grounding grid, determine the second detection requirement, and clarify the second detection target;

[0013] The third detection target unit: Obtain the historical project data of the transmission tower grounding grid, determine the third detection requirement, and clarify the third detection target;

[0014] The detection range determination unit: Classify the first detection target, the second detection target, and the third detection target into functional targets and non-functional targets, and determine the detection range of each detection target based on the functional targets and non-functional targets.

[0015] The present invention provides a non-excavation detection device for a transmission tower grounding grid. The hardware development module includes:

[0016] The scheme determination unit: Determine the corresponding measurement method according to each detection target and the corresponding detection range, perform connection analysis on the detection targets, and design a measurement scheme based on the connection analysis result and the corresponding measurement method;

[0017] The 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 perform hardware development of the grounding grid detection device.

[0018] The present invention provides a non-excavation detection device for a transmission tower grounding grid. The scheme determination unit includes:

[0019] The first connection block: Perform causal analysis on each detection target, determine the causal relationship between the detection targets, and perform the first connection on the corresponding measurement method based on the causal relationship;

[0020] The second connection block: Perform correlation analysis on each detection target, determine the correlation relationship between the detection targets, and perform the second connection on the corresponding measurement method based on the correlation relationship;

[0021] The remaining connection block: Perform dependency analysis on each detection target, determine the dependency relationship, and perform the third connection. Similarly, perform feedback loop analysis on each detection target, determine the feedback loop relationship, and perform the fourth connection. Perform hierarchical relationship analysis on each detection target, determine the hierarchical relationship, and perform the fifth connection;

[0022] Comprehensive connection block: Connect all measurement methods according to the first connection, second connection, third connection, fourth connection, and fifth connection to form a measurement plan.

[0023] The present invention provides a non-excavation detection device for a transmission tower grounding grid. The software development module includes:

[0024] Function determination unit: According to the hardware development results, determine the hardware limitations and capabilities, list the required software functions in combination with the detection requirements and hardware capabilities, and divide the software functions into components to obtain a signal generation component, a data acquisition component, a data processing component, and a user interaction component.

[0025] Signal modulation unit: Modulate the power harmonic signal to be transmitted using the signal generation component and send the modulated power harmonic signal into the grounding grid.

[0026] Algorithm unit: Receive the returned harmonic signal through the data acquisition component, determine the data processing algorithm according to the detection target and measurement plan, and use the data processing algorithm to screen the returned harmonic signal to obtain the returned signal.

[0027] Judgment unit: Use the data processing component to determine the attenuation value of the returned signal, simulate the attenuation value through the path finding algorithm, and judge the number of breakpoints in the transmission tower grounding grid.

[0028] Output unit: Output the number of breakpoints from the user interaction component, and then carry out software development.

[0029] The present invention provides a non-excavation detection device for a transmission tower grounding grid. The algorithm unit includes:

[0030] List determination block: Sort the returned harmonic signals received by the harmonic receiving component according to the time sequence to generate a list of returned signals under the time series.

[0031] Primary filtering block: Screen out the data of the returned harmonic signals in the returned signal list whose frequencies are the same as the transmitted power harmonic frequencies to obtain a primary filtered returned signal list.

[0032] Secondary filtering block: Screen out the data of the returned harmonic signals in the primary filtered returned signal list whose amplitudes are in the same ratio as the transmitted power harmonic amplitudes to obtain a secondary filtered returned signal list.

[0033] Tertiary filtering block: Screen out the data of the returned harmonic signals in the secondary filtered returned signal list whose phase lengths differ from the transmitted phase length by less than the phase threshold to obtain a tertiary filtered returned signal list, and the tertiary filtered returned signal list is the final returned signal.

[0034] The present invention provides a non-excavation detection device for a transmission tower grounding grid, and a judgment unit, including:

[0035] Calculation block: Calculate the transmission distance of power harmonics according to the attenuation of the returned signal:

[0036] , where represents the amplitude at position x and time t; represents the initial amplitude at the measuring point source; represents a constant related to spatial attenuation; represents a constant related to time attenuation; represents a phase function related to position and time; is the distance of power harmonic propagation;

[0037] Marking block: Based on the transmission distance of power harmonics, perform pathfinding relying on the depth-first algorithm, mark the current leaf node when pathfinding cannot continue at any leaf node position, and record the distance of the current leaf node from the source point;

[0038] Adding parameter block: During the process of pathfinding relying on the depth-first algorithm, record the positions corresponding to the power harmonic signals with abnormal phases, add corrosion degree parameters to the corresponding positions according to the abnormal phase distances, and mark them in the corresponding leaf node branches;

[0039] Position determination block: Based on the pathfinding result, explore the path according to the pre-buried grounding grid path to find the break point position in the transmission tower grounding grid;

[0040] Integrity judgment block: Judge the integrity of the transmission tower grounding grid based on the number of break points in the transmission tower grounding grid. If the number of break points in the transmission tower grounding grid is greater than or equal to the preset value, it indicates that the current transmission tower grounding grid is damaged. If the number of break points in the transmission tower grounding grid is less than the preset value, it indicates that the damage of the current transmission tower grounding grid has not reached the fault standard.

[0041] The present invention provides a non-excavation detection device for a transmission tower grounding grid, and a device module, including:

[0042] Manufacturing unit: Ensure that the hardware development result matches the software development result, confirm that the hardware development result can support the required software functions, write a comprehensive design document, describe in detail the design schemes of the hardware and software, and assemble the hardware development result and the software development result according to the design scheme, thereby manufacturing the detection device.

[0043] Compared with the prior art, the beneficial effects of the present application are as follows: By obtaining the detection requirements, determining the detection targets and scope, designing corresponding measurement schemes, the hardware module selects appropriate measurement modules for signal acquisition, and the software module realizes data processing and analysis. Finally, the results are fed back to the user. The whole process realizes non-excavation and real-time detection, ensures the safety and effectiveness of the grounding grid, avoids potential safety hazards caused by power outages and excavations, guarantees the safety of equipment and personnel, quickly obtains detection results, reduces the detection time, improves work efficiency, and enhances the accuracy and reliability of measurement.

[0044] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings.

[0045] The technical solutions of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0046] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0047] Figure 1 is a schematic structural diagram of a non-excavation detection device for a transmission tower grounding grid provided by an embodiment of the present invention. Detailed Embodiments

[0048] The following describes the preferred embodiments of the present invention with reference to the 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.

[0049] Embodiment 1:

[0050] An embodiment of the present invention provides a non-excavation detection device for a transmission tower grounding grid, as Figure 1 shown, including:

[0051] Detection module: Obtain detection requirements, and determine detection targets and the detection scope corresponding to each detection target according to the detection requirements;

[0052] Hardware development module: Design a measurement scheme according to the detection targets and detection scope, select a measurement module according to the measurement scheme, and perform hardware development based on the measurement scheme and the measurement module;

[0053] Software development module: Determine software functions based on the detection requirements and the hardware development, determine data processing algorithms according to the software functions, and then perform software development;

[0054] Device Module: Based on the combined results of hardware development and software development, a design plan is derived to fabricate a detection device.

[0055] In this embodiment, the detection requirements include the first detection requirement, the second detection requirement, and the third detection requirement.

[0056] In this embodiment, the detection scope is determined according to functional and non-functional objectives. For example, the detection scope may include the resistance value of the grounding grid, material quality, construction technology, maintenance records, etc.

[0057] In this embodiment, the measurement plan is a specific measurement plan designed based on measurement methods and connection analysis results, including multiple measurement methods such as resistance measurement, direct current measurement, temperature monitoring, etc.

[0058] In this embodiment, in-depth analysis of the detection target 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 different connections between detection targets, and then these connections are integrated to form a comprehensive connection block, and finally a comprehensive measurement plan is formulated.

[0059] In this embodiment, the measurement module is a hardware component integrating specific sensors and processing units, designed to perform specific measurement tasks. It usually includes sensors, signal processing circuits, data acquisition units, and communication interfaces, etc., to facilitate the collection, processing, and transmission of measurement data. For example, the current measurement module: used to detect current changes in power harmonic transmission, may include a current sensor, an amplifier circuit, and an ADC (analog-to-digital converter), and send the data to the main controller through the communication interface.

[0060] In this embodiment, hardware development is the design and manufacture of hardware components based on a hardware detection diagram. For example, according to the hardware detection diagram, a grounding grid detection instrument integrating sensors and data acquisition modules is developed.

[0061] In this embodiment, according to each detection target and its detection scope, appropriate measurement methods are selected and connection analysis is carried out to form a measurement plan. Based on the measurement plan, the required measurement modules and placement positions are determined, a hardware detection diagram is drawn, and then hardware development is carried out.

[0062] In this embodiment, the hardware capabilities and detection requirements are identified by 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 returned signal and applies data processing algorithms for screening, the judgment unit calculates the attenuation value of the returned signal, determines the number of breakpoints in the grounding grid through a routing algorithm, and finally outputs the result through the user interaction component to complete software development.

[0063] In this embodiment, the software functions are specific software requirements determined according to the hardware capabilities and detection needs. 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.

[0064] In this embodiment, the data processing algorithm is an algorithm used to analyze and process the received return signals. For example, the fast Fourier transform (FFT) algorithm is used to perform frequency-domain analysis on the returned harmonic signals to extract the amplitude and phase information of the signals.

[0065] In this embodiment, the design scheme is a specific implementation scheme of hardware and software formulated according to the requirements analysis, including design objectives, technical routes, implementation steps, etc. For example, the design scheme may include selecting specific microcontrollers, sensor models, communication protocols, as well as the programming languages and development environments of the software.

[0066] In this embodiment, by ensuring the functional matching of the hardware and software, verifying that the hardware can support the required software functions, writing a comprehensive design document to describe the design schemes of the hardware and software in detail to ensure their coordination, assembling the development results of the hardware and software according to the design scheme, and finally fabricating a complete detection device.

[0067] The working principle and beneficial effects of the above technical solution are as follows: By obtaining the detection requirements, determining the detection objectives and scopes, designing corresponding measurement schemes, the hardware module selects appropriate measurement modules for signal acquisition, and the software module realizes data processing and analysis, and finally feeds the results back to the user. The whole process realizes non-excavation and real-time detection, ensures the safety and effectiveness of the grounding grid, avoids potential safety hazards caused by power outages and excavations, guarantees the safety of equipment and personnel, quickly obtains detection results, reduces the detection time, improves work efficiency, and enhances the accuracy and reliability of the measurement.

[0068] Embodiment 2:

[0069] The embodiment of the present invention provides a non-excavation detection device for the grounding grid of a transmission tower. The detection module includes:

[0070] The first detection target unit: Obtain relevant personnel of the grounding grid of the transmission tower, determine the first detection requirements based on the relevant personnel, and clarify the first detection target;

[0071] The second detection target unit: Obtain the industry standards of the grounding grid of the transmission tower, determine the second detection requirements, and clarify the second detection target;

[0072] The third detection target unit: Obtain the historical project data of the grounding grid of the transmission tower, determine the third detection requirements, and clarify the third detection target;

[0073] Detection range determination unit: Classify the first detection target, the second detection target, and the third detection target into functional targets and non-functional targets, and determine the detection range of each detection target based on the functional targets and non-functional targets.

[0074] In this embodiment, the relevant personnel are those related to the grounding grid of the transmission tower, including technicians, engineers, maintenance personnel, etc. For example, engineers responsible for the maintenance of the transmission tower in the power company and technicians responsible for the design of the grounding grid.

[0075] In this embodiment, the first detection requirement is the detection requirement for the grounding grid of the transmission tower determined based on the information of the relevant personnel. For example, determining whether the resistance value of the grounding grid meets the standard; the first detection target is the specific detection target set according to the first detection requirement. For example, ensuring that the resistance value of the grounding grid is less than 4Ω.

[0076] In this embodiment, the industry standard is the industry norms and standards related to the grounding grid of the transmission tower. For example, the "Technical Regulations for Earthing Devices of Transmission Lines" issued by the State Grid Corporation.

[0077] In this embodiment, the second detection requirement is the detection requirement for the grounding grid of the transmission tower determined based on the industry standard. For example, checking whether the materials and construction of the grounding grid comply with the regulations according to the industry standard; the second detection target is the specific detection target set according to the second detection requirement. For example, confirming that the materials used in the grounding grid comply with the GB standard.

[0078] In this embodiment, the historical project data is the detection and maintenance data of past projects related to the grounding grid of the transmission tower. For example, the grounding grid detection reports and maintenance records in the past five years.

[0079] In this embodiment, the third detection requirement is the detection requirement for the grounding grid of the transmission tower determined based on the historical project data. For example, analyzing historical data to determine the performance changes of the grounding grid in different seasons; the third detection target is the specific detection target set according to the third detection requirement. For example, evaluating the resistance change of the grounding grid under extreme weather conditions.

[0080] In this embodiment, the functional target is a detection target directly related to the system function. For example, ensuring that the grounding grid can effectively protect equipment in case of a fault; the non-functional target is a target indirectly related to system performance, reliability, etc. For example, ensuring that the maintenance cost of the grounding grid is within an acceptable range.

[0081] The working principle and beneficial effects of the above technical solution are as follows: Relevant information is obtained through three detection target units, and the detection requirements and targets are determined respectively from personnel, industry standards, and historical data. These targets are classified into functional and non-functional targets, and based on this, the detection scope of each target is clarified, ensuring the comprehensiveness and pertinence of the detection requirements, making the subsequent detection plan more accurate and effective, improving the pertinence of detection, and enhancing the reliability and comparability of detection results.

[0082] Embodiment 3:

[0083] An embodiment of the present invention provides a non-excavation detection device for the grounding grid of a transmission tower. The hardware development module includes:

[0084] Scheme determination unit: Determine the corresponding measurement method according to each detection target and the corresponding detection scope, conduct connection analysis on the detection targets, and design a measurement scheme based on the connection analysis result and the corresponding measurement method;

[0085] 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 for the hardware development of the grounding grid detection device.

[0086] In this embodiment, the measurement method is a specific technology or tool for obtaining detection target data. For example, a digital multimeter is used to measure the resistance value of the grounding grid, or a thermal imager is used to detect the thermal distribution of the grounding grid.

[0087] In this embodiment, the connection analysis is to analyze the relationship between detection targets to determine how they affect or depend on each other. For example, analyze the relationship between the resistance value of the grounding grid and its material quality, and determine the possible increase in the resistance value when the material quality is unqualified.

[0088] In this embodiment, the placement position is to determine the specific installation position of the hardware components at the actual detection site. For example, a resistance measurement sensor is installed near the grounding terminal of the transmission tower to facilitate obtaining accurate data.

[0089] In this embodiment, the hardware detection diagram is a drawn drawing that includes all hardware components and their placement positions. For example, a drawing marked with the positions of sensors, data collectors, and connecting wires, showing how to arrange the hardware in the grounding grid detection device.

[0090] The working principle and beneficial effects of the above technical solution are as follows: According to each detection target and its detection range, an appropriate measurement method is selected and connection analysis is carried out to form a measurement plan. Based on the measurement plan, the required measurement modules and placement positions are determined, and a hardware detection diagram is drawn, and then hardware development is carried out, ensuring the matching of the measurement method with the actual requirements, 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 requirements and environments.

[0091] Embodiment 4:

[0092] The embodiment of the present invention provides a non-excavation detection device for the grounding grid of a transmission tower. The scheme determination unit includes:

[0093] The first connection block: performs causal analysis on each detection target to determine the causal relationship between detection targets, and makes a first connection to the corresponding measurement method based on the causal relationship;

[0094] The second connection block: performs correlation analysis on each detection target to determine the correlation between detection targets, and makes a second connection to the corresponding measurement method based on the correlation;

[0095] The remaining connection block: performs dependency analysis on each detection target to determine the dependency relationship and makes a third connection. Similarly, performs feedback loop analysis on each detection target to determine the feedback loop relationship and makes a fourth connection, and performs hierarchical relationship analysis on each detection target to determine the hierarchical relationship and makes a fifth connection;

[0096] The comprehensive connection block: connects all measurement methods according to the first connection, second connection, third connection, fourth connection and fifth connection to form a measurement plan.

[0097] In this embodiment, causal analysis is to study the influence relationship of one detection target on another detection target to determine the causal relationship. For example, analyze whether the change in the resistance of the grounding grid will affect the grounding safety of the equipment. If the resistance decreases, it may lead to poor grounding.

[0098] 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 the equipment to leak electricity, thus affecting the normal operation of the equipment.

[0099] In this embodiment, the first connection is to connect the corresponding measurement method based on causal analysis and causal relationship. For example, select a resistance measuring instrument to monitor the resistance of the grounding grid to detect potential grounding faults in a timely manner.

[0100] In this embodiment, correlation analysis is to study the correlation between detection targets and determine their statistical relationship. For example, analyze the correlation between the temperature change and current change of the grounding grid to see if there is a certain positive or negative correlation.

[0101] In this embodiment, correlation connection is to describe the correlation relationship between detection targets. For example, if the temperature of the grounding grid rises, it may cause the current to increase, thus affecting the grounding effect.

[0102] In this embodiment, the second connection is to connect the corresponding measurement methods based on correlation analysis and correlation connection. For example, select a temperature sensor and a current sensor for joint measurement to simultaneously monitor the temperature and current changes.

[0103] In this embodiment, dependency analysis is to study the degree of dependence of one detection target on another. For example, analyze whether the performance of the grounding grid depends on the soil humidity. If the humidity is too low, it may affect the grounding effect.

[0104] In this embodiment, dependency connection is to describe the dependency relationship between detection targets. For example, the resistance performance of the grounding grid depends on the conductivity of the surrounding soil.

[0105] In this embodiment, the third connection is to connect the corresponding measurement methods based on dependency analysis and dependency connection. For example, select a soil humidity sensor to monitor the soil humidity in order to evaluate the performance of the grounding grid.

[0106] In this embodiment, feedback loop analysis is to study the feedback relationship between detection targets and determine how they affect each other. For example, analyze whether the resistance change of the grounding grid will affect the operation of the equipment, and further affect the current feedback.

[0107] In this embodiment, feedback loop connection is to describe the feedback relationship between detection targets. For example, poor grounding leads to unstable operation of the equipment, and unstable operation of the equipment may in turn cause more problems in the grounding grid.

[0108] In this embodiment, the fourth connection is to connect the corresponding measurement methods based on feedback loop analysis and feedback loop connection. For example, establish a feedback control system to real-time monitor the resistance of the grounding grid and the operation status of the equipment to keep the system stable.

[0109] In this embodiment, hierarchical relationship analysis is to study the hierarchical relationship between detection targets and determine their importance and priority. For example, analyze the importance of different parts of the grounding grid (such as grounding electrodes, connecting wires, etc.) in the overall performance.

[0110] In this embodiment, the hierarchical relationship describes the hierarchical relationship between the detection targets. For example, the performance of the grounding electrode takes precedence over that of the connection wire because the grounding electrode directly affects the grounding effect.

[0111] In this embodiment, the fifth connection is to connect the corresponding measurement methods based on the hierarchical relationship analysis and hierarchical connection. For example, priority is given to monitoring and maintaining the grounding electrode to ensure its performance is better than other parts.

[0112] In this embodiment, connecting all the measurement methods to form a measurement plan is to synthesize the results of all connection analyses and formulate a complete measurement plan. For example, according to causal analysis, correlation analysis, dependency analysis, feedback loop analysis, and hierarchical relationship analysis, a complete monitoring plan is formulated, including resistance measurement, temperature monitoring, soil humidity detection, etc., to ensure the safety and reliability of the grounding grid.

[0113] The working principle and beneficial effects of the above technical solution are as follows: Through multiple connection blocks, in-depth analysis of the detection targets is carried out, including causal analysis, correlation analysis, dependency analysis, feedback loop analysis, and hierarchical relationship analysis. Each analysis method determines different relationships between the detection targets, and then these relationships are integrated to form a comprehensive connection block. Finally, a comprehensive measurement plan is formulated, ensuring the systematicness and complementarity of the measurement methods, enhancing the comprehensiveness and depth of the measurement plan, and improving the accuracy of detection.

[0114] Embodiment 5:

[0115] The embodiment of the present invention provides a non-excavation detection device for the grounding grid of a transmission tower. The software development module includes:

[0116] Function determination unit: According to the hardware development results, determine the hardware limitations and capabilities, list the required software functions in combination with the detection requirements and hardware capabilities, and divide the software functions into components to obtain a signal generation component, a data acquisition component, a data processing component, and a user interaction component;

[0117] Signal modulation unit: Use the signal generation component to modulate the power harmonic signal to be sent and send the modulated power harmonic signal into the grounding grid;

[0118] Algorithm unit: Receive the returned harmonic signal through the data acquisition component, determine the data processing algorithm according to the detection target and measurement plan, and use the data processing algorithm to screen the returned harmonic signal to obtain the returned signal;

[0119] Judgment unit: Use the data processing component to determine the attenuation value of the returned signal, simulate the attenuation value through the pathfinding algorithm, and judge the number of breakpoints of the grounding grid of the transmission tower;

[0120] Output unit: Output the number of breakpoints from the user interaction component, and then carry out software development.

[0121] In this embodiment, the hardware development result is the final state of hardware design and implementation, including its functions, performance, stability, etc. For example, a signal generator that supports signal processing below 1 kHz frequency is developed and successfully tested multiple times to ensure its stable operation in different environments.

[0122] In this embodiment, hardware limitations are the limitations of hardware in terms of performance, processing power, storage, power consumption, etc. For example, the maximum output power of the signal generator is 5W and it cannot support higher power electrical harmonic signals, which limits its application in some high-load scenarios.

[0123] In this embodiment, hardware capabilities are 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 signals simultaneously.

[0124] In this embodiment, electrical harmonic signals are specific frequency signals used for testing, usually integer multiples of the sine wave frequency. For example, electrical harmonic signals with frequencies of 50 Hz, 100 Hz, and 150 Hz are emitted to test the response of the grounding grid.

[0125] In this embodiment, the returned harmonic signal is the response signal of the grounding grid to the transmitted signal, usually containing information on reflection and attenuation. For example, after transmitting a 50 Hz electrical harmonic signal, the signal returned by the grounding grid may show changes in frequency components, reflecting the state of the grounding grid.

[0126] In this embodiment, the returned signal is the signal information obtained after data processing, usually used for further analysis. For example, after FFT processing, the returned signal may show the attenuation values and spectral characteristics of specific frequencies, facilitating subsequent judgment.

[0127] In this embodiment, screening is the process of analyzing and filtering the returned signal to extract effective information. For example, by setting a threshold, frequency components with amplitudes below a certain standard are screened out to exclude noise signals.

[0128] In this embodiment, the number of breakpoints is the number of possible fault points in the grounding grid, judged by analyzing the attenuation of the returned signal. For example, by analyzing the attenuation value of the returned signal, if it is found that the signal attenuation exceeds the preset value, there may be 2 breakpoints.

[0129] In this embodiment, software development is the process of optimizing the system and enhancing functions based on the detection results. For example, according to the output number of breakpoints, the software algorithm is adjusted to improve the detection accuracy, or new functional modules are added to support more complex detection requirements.

[0130] In this embodiment, the modulation includes frequency modulation, phase modulation, and amplitude modulation. When performing amplitude modulation, the amplitude value of the power harmonic signal to be transmitted has a minimum limit A, and the maximum amplitude value of the original power harmonic signal in the grounding material is set to B. The minimum limit A should be greater than or equal to B 1.5

[0131] In this embodiment, the received return harmonic signals are sorted in chronological order by the list determination block to generate a time series list. The first filtering block filters out the signals with the same frequency to form a first-filtered return signal list. The second filtering block further filters out the signals with an equal ratio of amplitudes to obtain a second-filtered return signal list. The third filtering block filters the signals according to the threshold of the phase length to form the final return signal

[0132] In this embodiment, the propagation distance of the power harmonics is calculated based on the attenuation of the return signal. The depth-first algorithm is used for pathfinding, the leaf nodes that cannot continue are marked and the distances are recorded. During the pathfinding process, the phase anomaly signals are recorded and the corrosion degree parameter is added. The break point position of the grounding grid is found according to the pathfinding result, and the integrity of the grounding grid is evaluated based on the number of break points

[0133] The working principle and beneficial effects of the above technical solution are as follows: 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 data processing algorithms for screening. The judgment unit calculates the attenuation value of the return signal, judges the number of break points of the grounding grid through the pathfinding algorithm, and finally outputs the result through the user interaction component to complete the software development, improving the efficiency and accuracy of data processing and enhancing the reliability of detection

[0134] Embodiment 6:

[0135] The embodiment of the present invention provides a non-excavation detection device for a transmission tower grounding grid, and the algorithm unit includes:

[0136] List determination block: The return harmonic signals received by the harmonic receiving component are sorted according to the time sequence to generate a return signal list under the time series

[0137] First filtering block: Filter out the return harmonic signal data with the same frequency as the transmitted power harmonic from the return signal list to obtain a first-filtered return signal list

[0138] Second filtering block: Filter out the return harmonic signal data with an equal ratio of amplitudes to the transmitted power harmonic from the first-filtered return signal list to obtain a second-filtered return signal list

[0139] Triple filtering block: Filter out the returned harmonic signal data from the returned signal list of the secondary filtering, where the difference between the phase length and the transmitted phase length is less than the phase threshold, to obtain the triple filtering returned signal list, which is the final returned signal.

[0140] In this embodiment, the returned signal list is a signal sequence generated in chronological order from the returned harmonic signals received by the harmonic receiving component. For example, assuming 10 returned harmonic signals are received within 1 second, the generated returned 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].

[0141] In this embodiment, the single-filtering returned signal list is a new signal list formed by filtering out the returned harmonic signal data with the same frequency as the transmitted power harmonic from the returned signal list. For example, if the transmitted power harmonic frequency is 50 Hz and only some of the signals in the returned signal list have a frequency of 50 Hz, the single-filtering returned signal list obtained after filtering is: [0.5 V, 0.7 V, 0.9 V].

[0142] In this embodiment, the double-filtering returned signal list is a new signal list formed by filtering out the returned harmonic signal data with an amplitude in the same ratio as the transmitted power harmonic amplitude from the single-filtering returned signal list. For example, assuming the transmitted power harmonic amplitude is 1 V, filter the signals in the single-filtering returned signal list with an amplitude in the same ratio as 1 V to obtain the double-filtering returned signal list: [0.5 V, 0.7 V] (assuming the amplitudes of these signals are in the ratios of 0.5 and 0.7 to 1 V).

[0143] In this embodiment, the triple-filtering returned signal list is a new signal list formed by filtering out the returned harmonic signal data with a phase length difference less than the phase threshold from the double-filtering returned signal list compared to the transmitted phase length. For example, assuming the transmitted phase length is 30° and the phase threshold is 5°, filter out the signals with a phase between 25° and 35° from the double-filtering returned signal list to obtain the triple-filtering returned signal list: [0.5 V] (assuming only this signal has a phase within the allowable range).

[0144] The working principle and beneficial effects of the above technical solution are: The received returned harmonic signals are sorted in chronological order by the list determination block to generate a time series list. The single-filtering block filters out the signals with the same frequency to form the single-filtering returned signal list. The double-filtering block further filters out the signals with amplitudes in the same ratio to obtain the double-filtering returned signal list. The triple-filtering block filters the signals according to the phase length threshold to form the final returned signal, ensuring the accuracy and reliability of the signals and improving the reliability and stability of the entire detection system.

[0145] Example 7:

[0146] An embodiment of the present invention provides a non-excavation detection device for a transmission tower grounding grid, and a judgment unit, including:

[0147] Calculation block: Calculate the transmission distance of power harmonics according to the attenuation of the returned signal:

[0148] , where 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 attenuation; represents a phase function related to position and time; is the distance of power harmonic propagation;

[0149] Marking block: According to the power harmonic propagation distance, perform pathfinding by relying on the depth-first algorithm. When pathfinding cannot continue at any leaf node position, mark the current leaf node and record the distance of the current leaf node from the source point;

[0150] Adding parameter block: During the process of pathfinding by relying on the depth-first algorithm, record the positions corresponding to the power harmonic signals with abnormal phases. According to the phase anomaly distance, add corrosion degree parameters to the corresponding positions and mark them in the corresponding leaf node branches;

[0151] Position determination block: Based on the pathfinding result, explore according to the pre-buried grounding grid path to find the break point position in the transmission tower grounding grid;

[0152] Integrity judgment block: Judge the integrity of the transmission tower grounding grid according to the number of break points in the transmission tower grounding grid. If the number of break points in the transmission tower grounding grid is greater than or equal to the preset value, it indicates that the current transmission tower grounding grid is damaged. If the number of break points in the transmission tower grounding grid is less than the preset value, it indicates that the damage of the current transmission tower grounding grid has not reached the fault standard.

[0153] In this embodiment, pathfinding by the depth-first algorithm is a graph traversal algorithm. Starting from a node, it goes as deep as possible into the leaf nodes of each branch until it cannot continue, and then backtracks to the previous node to continue exploration. 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 break point or a node where it cannot continue, and then returns to the previous node to try other paths.

[0154] In this embodiment, the corrosion degree parameter is used to describe the attenuation degree of the signal during propagation, which is usually related to the intensity or frequency change of the phase anomaly signal. For example, if the signal amplitude detected at a certain position is significantly lower than the expected value, the corrosion degree parameter at this position can be recorded as 3 (indicating severe corrosion), and this parameter can be used in subsequent analysis.

[0155] In this embodiment, the phase anomaly distance refers to the distance at which the phase of the signal changes abnormally during propagation, which is usually used to judge the propagation quality of the signal. For example, if the phase change of the signal at a distance of 10 meters from the source point exceeds the set threshold, the phase anomaly distance at this position is 10 meters.

[0156] In this embodiment, the fault criterion is a preset condition used to judge whether there is a fault in the grounding grid of the transmission tower, 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, the grounding grid is considered to have a fault.

[0157] In this embodiment, the current leaf node is the node currently being processed in the depth-first algorithm. If this node has no child nodes or cannot be explored further, it is called the current leaf node. For example, during the pathfinding process, if the current node is a breakpoint and has no other connections, this node is marked as the current leaf node.

[0158] In this embodiment, the source point is the starting point of signal propagation, 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.

[0159] In this embodiment, phase anomaly refers to the phenomenon that the phase of the signal changes abnormally during propagation, which usually reflects the attenuation or interference of the signal. For example, at a certain measurement point, if the phase change of the signal exceeds the set threshold, it indicates that there is a phase anomaly at this position.

[0160] The working principle and beneficial effects of the above technical solution are as follows: Calculate the propagation distance of power harmonics according to the attenuation of the returned signal, use the depth-first algorithm for pathfinding, mark the leaf nodes that cannot continue and record the distance, record the phase anomaly signal and add the corrosion degree parameter during the pathfinding process, find the breakpoint position of the grounding grid according to the pathfinding result, evaluate the integrity of the grounding grid based on the number of breakpoints, and judge whether the fault criterion is met, which helps to detect potential faults in a timely manner and ensure the safety of the grounding grid.

[0161] Embodiment 8:

[0162] The embodiment of the present invention provides a non-excavation detection device for the grounding grid of a transmission tower, and the device module includes:

[0163] 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, prepare a comprehensive design document that details the design solutions for both hardware and software, and assemble the hardware and software development results according to the design solutions to produce the detection device.

[0164] In this embodiment, "match" refers to the compatibility and collaborative working ability 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 transmit data effectively with the software.

[0165] In this embodiment, the design document is a document that details the design solutions for both hardware and software, including system architecture, component selection, interface definition, functional requirements, etc. For example, the design document may include the circuit diagram of the hardware, the module structure diagram of the software, the data flow diagram, and the functional descriptions of each component.

[0166] In this embodiment, "assemble" means integrating the hardware components and software modules according to the design solutions to form a complete detection device. For example, during the assembly process, connect sensors, circuit boards, and other hardware components, and upload the software to the microcontroller to ensure that all parts can work together.

[0167] The working principle and beneficial effects of the above technical solution are: By ensuring the functional match between hardware and software, verifying that the hardware can support the required software functions, preparing a comprehensive design document to detail the design solutions for both hardware and software to ensure their coordination, assembling the hardware and software development results according to the design solutions, and finally producing a complete detection device to ensure that its performance meets expectations, enhancing the reliability and stability of the detection device.

[0168] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-excavation detection device for the grounding grid of a transmission tower, characterized in that Including: Detection module: Obtain detection requirements, and determine detection targets and the detection ranges corresponding to each detection target according to the detection requirements; Hardware development module: Design a measurement scheme according to the detection targets and detection ranges, select a measurement module according to the measurement scheme, and conduct hardware development based on the measurement scheme and the measurement module; Software development module: Determine software functions based on the detection requirements and the hardware development, determine data processing algorithms according to the software functions, and then conduct software development; Device module: Obtain a design scheme by integrating the hardware development results and the software development results, and manufacture a detection device; Among them, the software development module includes: Function determination unit: According to the hardware development results, determine hardware limitations and hardware capabilities, list the required software functions by combining the detection requirements and hardware capabilities, and perform component division on the software functions to obtain a signal generation component, a data acquisition component, a data processing component, and a user interaction component; Signal modulation unit: Modulate the power harmonic signal to be sent using the signal generation component, and send the modulated power harmonic signal into the grounding grid; Algorithm unit: Receive the returned harmonic signal through the data acquisition component, determine a data processing algorithm according to the detection target and the measurement scheme, and use the data processing algorithm to screen the returned harmonic signal to obtain a returned signal; Judgment unit: Use the data processing component to determine the attenuation value of the returned signal, simulate the attenuation value through a pathfinding algorithm, and judge the number of breakpoints in the transmission tower grounding grid; Output unit: Output the number of breakpoints from the user interaction component, and then conduct software development; Among them, the algorithm unit includes: List determination block: Sort the returned harmonic signals received by the harmonic receiving component in chronological order to generate a list of returned signals in a time series; First filtering block: Screen out the data of the returned harmonic signals in the returned signal list whose frequencies of the returned harmonic signals are the same as the frequencies of the sent power harmonic signals to obtain a list of first-filtered returned signals; Second filtering block: Screen out the data of the returned harmonic signals in the list of first-filtered returned signals whose amplitudes of the returned harmonic signals are in the same ratio as the amplitudes of the sent power harmonic signals to obtain a list of second-filtered returned signals; Third filtering block: Screen out the data of the returned harmonic signals in the list of second-filtered returned signals whose phase lengths differ from the sent phase length by less than a phase threshold to obtain a list of third-filtered returned signals, and the list of third-filtered returned signals is the final returned signal.

2. The non-excavation detection device for the grounding grid of a transmission tower according to claim 1, characterized in that, The detection module includes: First detection target unit: Obtain relevant personnel of the transmission tower grounding grid, determine the first detection requirement based on the relevant personnel, and clarify the first detection target; Second detection target unit: Obtain the industry standards of the transmission tower grounding grid, determine the second detection requirement, and clarify the second detection target; Third detection target unit: Obtain the historical project data of the transmission tower grounding grid, determine the third detection requirement, and clarify the third detection target; Detection range determination unit: Classify the first detection target, the second detection target, and the third detection target into functional targets and non-functional targets, and determine the detection range of each detection target based on the functional targets and non-functional targets.

3. The non-excavation detection device for the grounding grid of a transmission tower according to claim 1, characterized in that, Hardware development module, including: Solution determination unit: Determine the corresponding measurement method according to each detection target and the corresponding detection range, conduct connection analysis on the detection targets, and design a measurement solution based on the connection analysis result and the corresponding measurement method; Development unit: Determine the measurement module based on the measurement solution and the detection target, determine the placement position according to the measurement module and the measurement solution, draw a hardware detection diagram according to the placement position, and use the hardware detection diagram to conduct hardware development of the grounding grid detection device.

4. The non-excavation detection device for the grounding grid of a transmission tower according to claim 3, characterized in that, Solution determination unit, including: First connection block: Conduct causal analysis on each detection target, determine the causal relationship between the detection targets, and conduct the first connection on the corresponding measurement method based on the causal relationship; Second connection block: Conduct correlation analysis on each detection target, determine the correlation between the detection targets, and conduct the second connection on the corresponding measurement method based on the correlation; Remaining connection block: Conduct dependency analysis on each detection target, determine the dependency relationship, and conduct the third connection. Similarly, conduct feedback loop analysis on each detection target, determine the feedback loop relationship, and conduct the fourth connection. Conduct hierarchical relationship analysis on each detection target, determine the hierarchical relationship, and conduct the fifth connection; Comprehensive connection block: Connect all the measurement methods according to the first connection, the second connection, the third connection, the fourth connection, and the fifth connection to form a measurement solution.

5. The non-excavation detection device for the grounding grid of a transmission tower according to claim 1, characterized in that, Judgment unit, including: Calculation block: Calculate the power harmonic transmission distance according to the attenuation of the returned signal: , where represents the amplitude at position x and time t; represents the initial amplitude at the measurement point source; represents the constant related to spatial attenuation; represents the constant related to temporal attenuation; represents the phase function related to position and time; is the distance of power harmonic propagation; Marking block: Based on the power harmonic propagation distance, conduct pathfinding using the depth-first algorithm. When pathfinding cannot continue at any leaf node position, mark the current leaf node and record the distance of the current leaf node from the source point; Parameter addition block: During the process of pathfinding using the depth-first algorithm, record the position corresponding to the power harmonic signal with abnormal phase. According to the abnormal phase distance, add a corrosion degree parameter to the corresponding position and mark it in the corresponding leaf node branch; Position determination block: Based on the pathfinding result, explore the path according to the pre-buried grounding grid path to find the break point position in the transmission tower grounding grid; Integrity judgment block: Judge the integrity of the transmission tower grounding grid according to the number of break points in the transmission tower grounding grid. If the number of break points in the transmission tower grounding grid is greater than or equal to the preset value, it indicates that the current transmission tower grounding grid is damaged. If the number of break points in the transmission tower grounding grid is less than the preset value, it indicates that the damage to the current transmission tower grounding grid has not reached the fault standard.

6. The non-excavation detection device for the grounding grid of a transmission tower according to claim 1, characterized in that, Device module, including: Manufacturing unit: Ensure that the hardware development result matches the software development result, confirm that the hardware development result can support the required software functions, write a comprehensive design document to describe the design solutions of the hardware and software in detail, and assemble the hardware development result and the software development result according to the design solution to manufacture the detection device.

Images