A method, device and equipment for processing measurement data of a tower grounding device in synchronization

Abstract

The application relates to a measurement data synchronous processing method, device and equipment of a tower grounding device, which comprises the following steps: inputting an M-component current of a lightning current waveform into a calculation model to obtain a second ground potential rise waveform, comparing a first ground potential rise waveform with the second ground potential rise waveform, and moving the lightning current waveform according to a translation time and a translation direction, so that the voltage waveform and the current waveform measured by the tower grounding device are synchronous, the time-varying characteristics of the impulse grounding impedance of the tower grounding device can be accurately understood, and the analysis level of the tower grounding device of a power transmission line is improved. The problem that the voltage waveform and the current waveform obtained by the existing artificial lightning measurement of the tower grounding device are not synchronous and the time-varying characteristics of the impulse grounding impedance of the tower grounding device cannot be accurately understood is solved.

Description

Technical Field

[0001] This application relates to the field of data processing technology for tower grounding devices, and in particular to a method, apparatus, and equipment for synchronous processing of measurement data of tower grounding devices. Background Technology

[0002] Lightning is a significant factor threatening the safe and reliable operation of power systems. In recent years, lightning strikes have remained one of the leading causes of power system outages. Investigations have shown that over 60% of power system accidents are caused by lightning strikes on transmission lines. Grounding devices on transmission line towers are an important measure for preventing lightning-induced faults in power systems, providing a low-impedance path for abnormal currents that may occur on transmission lines due to lightning or faults.

[0003] To date, research on the impulse grounding impedance of tower grounding devices based on artificial lightning strikes has become increasingly prevalent. Measurement experiments on the impulse grounding impedance of realistic tower grounding devices under artificial lightning strike conditions are being conducted using artificial lightning strike test platforms. However, the voltage and current waveforms obtained from the impulse grounding impedance measurements of tower grounding devices based on artificial lightning strikes are generally not synchronized. This is because the measurement of the lightning current is performed by a separate measuring instrument, while the ground potential rise at the current injection point of the tower grounding device is measured by a voltage divider in conjunction with an oscilloscope. The triggering methods and timings of these two measurements are inconsistent, and GPS clock synchronization cannot be used. Therefore, currently, there is no effective method to synchronize the voltage and current waveforms obtained from the impulse grounding impedance measurements of tower grounding devices based on artificial lightning strikes. To facilitate the analysis of the impulse characteristics during lightning strikes on tower grounding devices, a method for synchronizing the voltage and current during the measurement of the impulse grounding impedance of tower grounding devices based on artificial lightning strikes is necessary. Summary of the Invention

[0004] This application provides a method, apparatus, and device for synchronously processing measurement data of a tower grounding device, which solves the technical problem that the voltage and current waveforms obtained from the impulse grounding impedance of the tower grounding device based on artificial lightning measurement are not synchronized, making it impossible to accurately understand the time-varying characteristics of the impulse grounding impedance of the tower grounding device.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] On the one hand, a method for synchronously processing measurement data of a tower grounding device is provided, including the following steps:

[0007] Obtain the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test;

[0008] The soil resistivity was obtained after the tower grounding device test was completed, and the soil structure where the tower grounding device was located was obtained by inverting the soil resistivity using CDEGS software.

[0009] Obtain the drawing data of the tower grounding device, and construct a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and the soil structure.

[0010] The M-component current is extracted from the lightning current waveform, and the M-component current is input into the calculation model to output the second ground potential rise waveform of the tower grounding device.

[0011] The first ground potential rise waveform and the second ground potential rise waveform are compared and shifted until they coincide, thus obtaining the shift time and shift direction; the lightning current waveform is shifted according to the shift time and shift direction to obtain the voltage and current synchronous waveform of the impulse grounding impedance measurement of the tower grounding device.

[0012] Preferably, the acquisition of the first ground potential rise waveform and lightning current waveform for the impulse grounding impedance test of the tower grounding device includes:

[0013] The impulse grounding impedance test is being conducted on the tower grounding device on the artificial lightning triggering test platform.

[0014] The lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device are obtained using measuring elements.

[0015] Extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

[0016] Preferably, the sampling rate for obtaining the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device using measuring elements is 10MHz.

[0017] Preferably, comparing and shifting the first ground potential rise waveform and the second ground potential rise waveform until they overlap includes: using the first ground potential rise waveform or the second ground potential rise waveform as a reference, moving the second ground potential rise waveform toward the first ground potential rise waveform or moving the first ground potential rise waveform toward the second ground potential rise waveform until the first ground potential rise waveform and the second ground potential rise waveform overlap.

[0018] Preferably, shifting the lightning current waveform according to the shift time and the shift direction includes: shifting the lightning current waveform by the shift time according to the shift direction.

[0019] On the other hand, a measurement data synchronization processing device for a tower grounding device is provided, including a first data acquisition module, a second data acquisition module, a model building module, a model output module, and a synchronization processing module;

[0020] The first data acquisition module is used to acquire the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test;

[0021] The second data acquisition module is used to acquire the soil resistivity after the tower grounding device test is completed, and to use CDEGS software to invert the soil structure where the tower grounding device is located based on the soil resistivity.

[0022] The model building module is used to acquire the drawing data of the tower grounding device, and to build a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and the soil structure.

[0023] The model output module is used to extract the M component current from the lightning current waveform, input the M component current into the calculation model, and output the second ground potential rise waveform of the tower grounding device.

[0024] The synchronization processing module is used to compare and shift the first ground potential rise waveform with the second ground potential rise waveform until the two waveforms coincide, and obtain the shift time and shift direction; according to the shift time and shift direction, the lightning current waveform is shifted to obtain the voltage and current synchronization waveform of the impulse grounding impedance measurement of the tower grounding device.

[0025] Preferably, the first data acquisition module is further used to conduct an impulse grounding impedance test on the tower grounding device on the artificial lightning test platform, and to use measuring elements to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device, extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

[0026] Preferably, the first data acquisition module is further configured to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device using a sampling rate of 10MHz and a measuring element.

[0027] Preferably, the synchronization processing module is further configured to use the first ground potential rise waveform or the second ground potential rise waveform as a reference to move the second ground potential rise waveform toward the first ground potential rise waveform or move the first ground potential rise waveform toward the second ground potential rise waveform until the first ground potential rise waveform and the second ground potential rise waveform coincide.

[0028] On the other hand, a terminal device is provided, including a processor and a memory;

[0029] The memory is used to store program code and transmit the program code to the processor;

[0030] The processor is used to execute the above-described method for synchronizing measurement data of the tower grounding device according to the instructions in the program code.

[0031] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: the method, apparatus, and equipment for synchronous processing of measurement data of the tower grounding device include: acquiring the first ground potential rise waveform and lightning current waveform of the tower grounding device undergoing an impulse grounding impedance test; acquiring the soil resistivity after the tower grounding device test, and using CDEGS software to invert the soil structure of the tower grounding device based on the soil resistivity; acquiring the drawing data of the tower grounding device, and constructing a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and soil structure; extracting the M component current from the lightning current waveform, inputting the M component current into the calculation model, and outputting the second ground potential rise waveform of the tower grounding device; comparing and shifting the first ground potential rise waveform and the second ground potential rise waveform until their waveforms coincide, obtaining the shift time and shift direction; and shifting the lightning current waveform according to the shift time and shift direction to obtain the voltage and current synchronous waveforms for measuring the impulse grounding impedance of the tower grounding device. This method for synchronously processing measurement data from tower grounding devices utilizes a constructed computational model and the first ground potential rise waveform and lightning current waveform obtained during the experimental process. The M-component of the lightning current waveform is input into the computational model to obtain the second ground potential rise waveform. Then, the first and second ground potential rise waveforms are compared and shifted until they coincide to obtain the shift time and direction. Based on the shift time and direction, the lightning current waveform is moved to synchronize the measured voltage and current waveforms of the tower grounding device. This facilitates a precise understanding of the time-varying characteristics of the impulse grounding impedance of the tower grounding device, contributing to improved analysis of transmission line tower grounding devices. This method solves the technical problem of existing methods for measuring the impulse grounding impedance of tower grounding devices based on artificial lightning strikes, which lack synchronization between the voltage and current waveforms and fail to accurately understand the time-varying characteristics of the impulse grounding impedance. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1This is a flowchart illustrating the steps of the method for synchronously processing measurement data of the tower grounding device described in the embodiments of this application;

[0034] Figure 2 This is a diagram showing the asynchronous current and voltage waveforms in the method for synchronously processing measurement data of the tower grounding device described in the embodiments of this application.

[0035] Figure 3 This is a schematic diagram of the calculation model in the method for synchronous processing of measurement data of the tower grounding device described in the embodiments of this application;

[0036] Figure 4 This is a schematic diagram comparing the translation of ground potential rise in the method for synchronous processing of measurement data of the tower grounding device described in the embodiments of this application;

[0037] Figure 5 This is a schematic diagram of the synchronization waveform in the measurement data synchronization processing method of the tower grounding device described in the embodiments of this application;

[0038] Figure 6 This is a frame diagram of the measurement data synchronization processing device for the pole grounding device according to an embodiment of this application. Detailed Implementation

[0039] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] This application provides a method, apparatus, and device for synchronously processing measurement data of a tower grounding device, which solves the technical problem that the voltage and current waveforms obtained from the impulse grounding impedance of the tower grounding device based on artificial lightning measurement are not synchronized, making it impossible to accurately understand the time-varying characteristics of the impulse grounding impedance of the tower grounding device.

[0043] Example 1:

[0044] Figure 1 This is a flowchart illustrating the steps of the method for synchronously processing measurement data of the tower grounding device described in the embodiments of this application.

[0045] like Figure 1 As shown in the figure, this application provides a method for synchronously processing measurement data of a tower grounding device, including the following steps:

[0046] S1. Obtain the first ground potential rise waveform and lightning current waveform of the tower grounding device for impulse grounding impedance test.

[0047] It should be noted that in step S1, the impulse grounding impedance test of the tower grounding device under lightning-induced conditions is performed to obtain the first ground potential rise waveform and lightning current waveform of the tower grounding device.

[0048] In this embodiment of the application, obtaining the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test includes:

[0049] The impulse grounding impedance test is being conducted on the tower grounding device on the artificial lightning triggering test platform.

[0050] The lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device are obtained using measuring elements.

[0051] Extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

[0052] It should be noted that the synchronous processing method for the grounding device's measurement data uses a 10MHz sampling rate and a measuring element to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device. In this embodiment, using an artificial lightning-induced test platform, a measurement test of the impulse grounding impedance of the tower grounding device under artificial lightning-induced conditions is conducted. The measuring instrument HBM of the measuring element measures the lightning current flowing into the tower grounding device through the diversion rod. The location 91.44m away from the current injection point of the tower grounding device is used as the zero potential reference point. Then, a voltage divider of the measuring element, in conjunction with an oscilloscope DL850, measures the ground potential rise at the current injection point of the tower grounding device as the first ground potential rise. Furthermore, the synchronous processing method for the grounding device's measurement data also converts the voltage and current at the current injection point of the tower grounding device into optical signals via I / O conversion elements for fiber optic transmission, and then converts the optical signals back into electrical signals via O / I conversion elements. The artificial lightning-induced test platform is a commonly used platform in this field and will not be described in detail here.

[0053] S2. Obtain the soil resistivity after the tower grounding device test is completed, and use CDEGS software to invert the soil structure where the tower grounding device is located based on the soil resistivity.

[0054] It should be noted that in step S2, firstly, the soil resistivity of the tower grounding device after the impulse grounding impedance test is completed is obtained; secondly, the soil structure of the tower grounding device is obtained by fitting the soil resistivity using the least squares method in CDEGS software. In this embodiment, after the impulse grounding impedance test of the tower grounding device is completed under artificial lightning conditions, the soil resistivity of the tower grounding device is measured using a soil resistivity tester.

[0055] S3. Obtain the drawing data of the tower grounding device, and construct a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and soil structure.

[0056] It should be noted that in step S3, a calculation model of the impulse grounding impedance of the tower grounding device is constructed on the CDEGS software based on the drawing data and soil structure. In this embodiment, constructing a model based on parameters on the CDEGS software is a function inherent to the CDEGS software itself; therefore, the specific details of constructing the calculation model of the impulse grounding impedance of the tower grounding device on the CDEGS software based on the drawing data and soil structure are not described in detail. The drawing data includes the structural drawings and installation drawings of the tower grounding device.

[0057] S4. Extract the M-component current from the lightning current waveform, input the M-component current into the calculation model, and output the second ground potential rise waveform of the tower grounding device.

[0058] It should be noted that in step S4, the M-component of the lightning current from step S1 is obtained, and then this M-component current is input into the calculation model constructed in step S3. The calculation model outputs the second ground potential rise waveform at the current injection point of the tower grounding device. The M-component refers to the sudden increase in channel brightness during the weak emission stage after the lightning return stroke, accompanied by a rapid change in the electric field. Generally, the nonlinear ionization of the soil around the tower grounding device under the action of the M-component of the lightning current can be ignored.

[0059] S5. Compare and shift the first ground potential rise waveform with the second ground potential rise waveform until the two waveforms coincide, and obtain the shift time and shift direction; shift the lightning current waveform according to the shift time and shift direction to obtain the voltage and current synchronous waveform of the impulse grounding impedance measurement of the tower grounding device.

[0060] It should be noted that in step S5, the two ground potential rise waveforms obtained in steps S1 and S4 are shifted until the two ground potential rise waveforms coincide, and the shift time and shift direction are obtained; then, the lightning current waveform is shifted according to the shift time and shift direction so that the shifted current waveform is synchronized with the voltage waveform measured by the impulse grounding impedance of the tower grounding device.

[0061] In this embodiment of the application, if the lightning current waveform is moved according to the translation time and translation direction, and the obtained current waveform cannot be synchronized with the corresponding voltage waveform, then the M component current of the lightning current is replaced and the translation time and translation direction corresponding to the replaced lightning current are obtained again according to the contents of steps S1 to S5, until synchronized current and voltage waveforms are obtained.

[0062] This application provides a method for synchronously processing measurement data of a tower grounding device. The method includes: acquiring the first ground potential rise waveform and lightning current waveform of the tower grounding device during an impulse grounding impedance test; acquiring the soil resistivity after the tower grounding device test, and using CDEGS software to invert the soil structure of the tower grounding device based on the soil resistivity; acquiring the drawing data of the tower grounding device, and constructing a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and soil structure; extracting the M-component current from the lightning current waveform, inputting the M-component current into the calculation model, and outputting the second ground potential rise waveform of the tower grounding device; comparing and shifting the first and second ground potential rise waveforms until they coincide, obtaining the shift time and shift direction; and shifting the lightning current waveform according to the shift time and shift direction to obtain the synchronous voltage and current waveforms for measuring the impulse grounding impedance of the tower grounding device. This method for synchronously processing measurement data from tower grounding devices utilizes a constructed computational model and the first ground potential rise waveform and lightning current waveform obtained during the experimental process. The M-component of the lightning current waveform is input into the computational model to obtain the second ground potential rise waveform. Then, the first and second ground potential rise waveforms are compared and shifted until they coincide to obtain the shift time and direction. Based on the shift time and direction, the lightning current waveform is moved to synchronize the measured voltage and current waveforms of the tower grounding device. This facilitates a precise understanding of the time-varying characteristics of the impulse grounding impedance of the tower grounding device, contributing to improved analysis of transmission line tower grounding devices. This method solves the technical problem of existing methods for measuring the impulse grounding impedance of tower grounding devices based on artificial lightning strikes, which lack synchronization between the voltage and current waveforms and fail to accurately understand the time-varying characteristics of the impulse grounding impedance.

[0063] In one embodiment of this application, moving the lightning current waveform according to the translation time and translation direction includes: shifting the lightning current waveform by translation time in the translation direction.

[0064] Figure 2 This is a diagram showing the asynchronous current and voltage waveforms in the synchronous processing method for measurement data of the tower grounding device described in this application embodiment. Figure 3 This is a schematic diagram of the calculation model in the method for synchronous processing of measurement data of the tower grounding device described in the embodiments of this application. Figure 4 This is a schematic diagram comparing the shift of ground potential rise in the synchronous processing method for measurement data of the tower grounding device described in the embodiments of this application. Figure 5 This is a schematic diagram of the synchronization waveform in the measurement data synchronization processing method of the tower grounding device described in the embodiments of this application.

[0065] In the embodiments of this application, the method for synchronously processing measurement data of the tower grounding device is illustrated through the following examples:

[0066] Using an artificial lightning-induced test platform, the first ground potential rise and lightning current waveform of the impulse grounding impedance of the tower grounding device can be measured. The sampling rate for both voltage and current is 10MHz. Figure 2 As shown in Table 1, after the artificial lightning test, the soil resistivity of the grounding device on the tower was tested, and the soil structure was obtained by inversion using CDEGS software. Next, a calculation model for the impulse grounding impedance of the tower grounding device was established using CDEGS software based on the drawing data and soil structure, simulating the on-site measured layout of the tower grounding device. The original tower grounding device was 20m away from the center of the new grounding grid. The original grounding device had a 40mm×4mm flat steel buried at a depth of 1m and a 50mm×50mm×4mm angle steel of 1m length. The new grounding grid had a 40mm×4mm flat steel buried at a depth of 0.8m. Figure 3 As shown. If the third pulse from the lightning current is used as the M-component current input to the calculation model to obtain the second ground potential rise waveform, and the first ground potential rise waveform at the current injection point of the tower grounding device, the measured first ground potential rise waveform and the calculated second ground potential rise waveform are compared, and the calculated second ground potential rise waveform is shifted to the right by 856191.0 μs, so that the two ground potential rise waveforms match, as shown. Figure 4 As shown, the translation time of 856191.0 μs and the translation direction to the right are obtained. Then... Figure 2 The lightning current waveform is shifted to the right by 856191.0 μs to obtain the synchronous voltage and current waveforms of the impulse grounding impedance measurement of the tower grounding device based on artificial lightning induction, as shown below. Figure 5 As shown.

[0067] Table 1 shows the soil structure where the tower grounding device is located.

[0068]

[0069] Example 2:

[0070] Figure 6 This is a flowchart illustrating the framework of the measurement data synchronization processing device for the tower grounding device described in this application embodiment.

[0071] like Figure 6 As shown in the figure, this application provides a measurement data synchronization processing device for a tower grounding device, including a first data acquisition module 10, a second data acquisition module 20, a model construction module 30, a model output module 40, and a synchronization processing module 50;

[0072] The first data acquisition module 10 is used to acquire the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test.

[0073] The second data acquisition module 20 is used to acquire the soil resistivity after the tower grounding device test is completed, and to obtain the soil structure where the tower grounding device is located by inverting the soil resistivity using CDEGS software.

[0074] Model building module 30 is used to obtain drawing data of the tower grounding device and build a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and soil structure.

[0075] Model output module 40 is used to extract the M component current from the lightning current waveform, input the M component current into the calculation model output to obtain the second ground potential rise waveform of the tower grounding device;

[0076] The synchronization processing module 50 is used to compare and shift the first ground potential rise waveform with the second ground potential rise waveform until the two waveforms coincide, and obtain the shift time and shift direction; according to the shift time and shift direction, the lightning current waveform is shifted to obtain the voltage and current synchronization waveform of the impulse grounding impedance measurement of the tower grounding device.

[0077] In this embodiment of the application, the first data acquisition module 10 is also used to conduct an impulse grounding impedance test on the tower grounding device on the artificial lightning test platform, and to use measuring elements to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device, extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

[0078] In this embodiment of the application, the first data acquisition module 10 is further configured to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device by means of a sampling rate of 10MHz and a measuring element.

[0079] In this embodiment of the application, the synchronization processing module 50 is further configured to use the first ground potential rise waveform or the second ground potential rise waveform as a reference to move the second ground potential rise waveform toward the first ground potential rise waveform or move the first ground potential rise waveform toward the second ground potential rise waveform until the first ground potential rise waveform and the second ground potential rise waveform coincide.

[0080] It should be noted that the modules in the device of Embodiment 2 correspond to the steps in the method of Embodiment 1. The content of the measurement data synchronization processing method of the tower grounding device has been described in detail in Embodiment 1, and the content of the modules in the device will not be described in detail in this Embodiment 2.

[0081] Example 3:

[0082] This application provides a terminal device, including a processor and a memory;

[0083] Memory is used to store program code and transfer the program code to the processor;

[0084] The processor is used to execute the above-described method for synchronizing measurement data of the tower grounding device according to the instructions in the program code.

[0085] It should be noted that the processor is used to execute the steps in the above-described embodiment of the measurement data synchronization processing method for a tower grounding device according to the instructions in the program code. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the above-described system / device embodiments.

[0086] For example, a computer program can be divided into one or more modules / units, one or more of which are stored in memory and executed by a processor to complete this application. One or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a terminal device.

[0087] Terminal devices can be computing devices such as desktop computers, laptops, handheld computers, and cloud servers. Terminal devices may include, but are not limited to, processors and memory. Those skilled in the art will understand that this does not constitute a limitation on the terminal device, which may include more or fewer components than illustrated, or combinations of certain components, or different components. For example, a terminal device may also include input / output devices, network access devices, buses, etc.

[0088] The processor referred to can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0089] Memory can be an internal storage unit of a terminal device, such as a hard drive or RAM. Memory can also be an external storage device, such as a plug-in hard drive, SmartMedia Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, memory can include both internal and external storage units. Memory is used to store computer programs and other programs and data required by the terminal device. Memory can also be used for temporary storage of data that has been output or will be output.

[0090] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0091] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0092] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0093] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0094] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0095] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for synchronously processing measurement data of a tower grounding device, characterized in that, Includes the following steps: Obtain the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test; The soil resistivity was obtained after the tower grounding device test was completed, and the soil structure where the tower grounding device was located was obtained by inverting the soil resistivity using CDEGS software. Obtain the drawing data of the tower grounding device, and construct a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and the soil structure. The M-component current is extracted from the lightning current waveform, and the M-component current is input into the calculation model to output the second ground potential rise waveform of the tower grounding device. The first ground potential rise waveform and the second ground potential rise waveform are compared and shifted until they coincide, thus obtaining the shift time and shift direction; the lightning current waveform is shifted according to the shift time and shift direction to obtain the voltage and current synchronous waveform of the impulse grounding impedance measurement of the tower grounding device.

2. The method for synchronously processing measurement data of the tower grounding device according to claim 1, characterized in that, The first ground potential rise waveform and lightning current waveform obtained for the impulse grounding impedance test of the tower grounding device include: An impulse grounding impedance test was conducted on the tower grounding device on an artificial lightning triggering test platform. The lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device are obtained using measuring elements. Extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

3. The method for synchronously processing measurement data of the tower grounding device according to claim 2, characterized in that, The sampling rate for obtaining the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device is 10MHz using measuring elements.

4. The method for synchronously processing measurement data of the tower grounding device according to claim 1, characterized in that, Comparing and shifting the first ground potential rise waveform and the second ground potential rise waveform until they coincide includes: using the first ground potential rise waveform or the second ground potential rise waveform as a reference, moving the second ground potential rise waveform toward the first ground potential rise waveform or moving the first ground potential rise waveform toward the second ground potential rise waveform until the first ground potential rise waveform and the second ground potential rise waveform coincide.

5. The method for synchronously processing measurement data of the tower grounding device according to claim 1, characterized in that, Moving the lightning current waveform according to the translation time and the translation direction includes: moving the lightning current waveform by the translation time in the translation direction.

6. A device for synchronously processing measurement data of a tower grounding device, characterized in that, It includes a first data acquisition module, a second data acquisition module, a model building module, a model output module, and a synchronization processing module; The first data acquisition module is used to acquire the first ground potential rise waveform and lightning current waveform of the tower grounding device during the impulse grounding impedance test; The second data acquisition module is used to acquire the soil resistivity after the tower grounding device test is completed, and to use CDEGS software to invert the soil structure where the tower grounding device is located based on the soil resistivity. The model building module is used to acquire the drawing data of the tower grounding device, and to build a calculation model of the impulse grounding impedance of the tower grounding device on CDEGS software based on the drawing data and the soil structure. The model output module is used to extract the M component current from the lightning current waveform, input the M component current into the calculation model, and output the second ground potential rise waveform of the tower grounding device. The synchronization processing module is used to compare and shift the first ground potential rise waveform with the second ground potential rise waveform until the two waveforms coincide, and obtain the shift time and shift direction; according to the shift time and shift direction, the lightning current waveform is shifted to obtain the voltage and current synchronization waveform of the impulse grounding impedance measurement of the tower grounding device.

7. The measurement data synchronization processing device for the tower grounding device according to claim 6, characterized in that, The first data acquisition module is also used to conduct impulse grounding impedance tests on the tower grounding device on the artificial lightning test platform, and to use measuring elements to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device, extract the lightning current waveform from the lightning current, and extract the first ground potential rise waveform from the first ground potential rise.

8. The measurement data synchronization processing device for the tower grounding device according to claim 7, characterized in that, The first data acquisition module is also used to acquire the lightning current flowing into the tower grounding device and the first ground potential rise at the current injection point of the tower grounding device by means of a sampling rate of 10MHz and a measuring element.

9. The measurement data synchronization processing device for the tower grounding device according to claim 6, characterized in that, The synchronization processing module is further configured to use the first ground potential rise waveform or the second ground potential rise waveform as a reference to move the second ground potential rise waveform toward the first ground potential rise waveform or move the first ground potential rise waveform toward the second ground potential rise waveform until the first ground potential rise waveform and the second ground potential rise waveform coincide.

10. A terminal device, characterized in that, Including the processor and memory; The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the measurement data synchronization processing method for the tower grounding device as described in any one of claims 1-5 according to the instructions in the program code.

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