Far field measurement system and method for mobile floating conductor arc discharge space radiation field

Abstract

This invention discloses a far-field measurement system and method for the spatial radiation field of a mobile suspended conductor arc discharge, comprising: a mobile suspended conductor arc discharge device for controlling the arc discharge of the suspended conductor; a signal receiving module for receiving the broadband far-field electromagnetic radiation signal generated by the discharge and converting it into a radio frequency (RF) signal; a signal conditioning module for conditioning the RF signal; a signal analysis module for analyzing the RF signal using a spectrum analyzer and outputting data analysis results; a vector network analyzer for verifying the link matching status between modules; a calibration module for calibrating the device based on a standard reference signal; a data processing module for synthesizing the standard uncertainty based on the calibration data; and simultaneous measurement of four measurement traces: peak value detection, average value detection, sampled value detection, and root mean square (RMS) detection, and calculation of the electric field intensity distribution based on the four measurement traces. This achieves high-precision measurement of the far-field characteristics of the spatial radiation of the arc discharge.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic radiation measurement technology, specifically to a far-field measurement system and method for the spatial radiation field of an arc discharge of a moving suspended conductor. Background Technology

[0002] In live-line work on high-voltage overhead transmission lines, live-line working robots, acting as mobile suspended conductors, are prone to arcing when approaching high-voltage live conductors. The broadband electromagnetic radiation generated by this arcing discharge directly affects the electromagnetic compatibility performance of live-line working robots and other live-line working equipment, as well as the normal operation of surrounding wireless equipment. Therefore, precise measurement of this radiation is necessary. Summary of the Invention

[0003] To address the problem of inaccurate measurement in existing far-field measurement systems for the spatial radiation field of arc discharge in moving suspended conductors, this invention provides a far-field measurement system for the spatial radiation field of arc discharge in moving suspended conductors, comprising: The mobile suspended conductor arc discharge device includes a signal receiving module, a signal conditioning module, a signal analysis module, and a data processing module. The mobile suspended conductor arc discharge device includes a position adjustment unit, a high-voltage energizing device, and a suspended conductor. The position adjustment unit is used to adjust the distance between the suspended conductor and the high-voltage energizing device. The signal receiving module is used to receive the broadband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor during the process of adjusting the distance between the suspended conductor and the high-voltage energized device using a biconical log-periodic antenna, convert the broadband far-field electromagnetic radiation signal into a transmittable radio frequency signal, and transmit the radio frequency signal to the signal conditioning module. The signal conditioning module is used to condition the radio frequency electrical signals transmitted by the signal receiving module; The signal analysis module uses a spectrum analyzer to parse and analyze the radio frequency electrical signal transmitted by the signal conditioning module, and outputs the data analysis results of the radio frequency electrical signal. The data processing module is used to calculate the electric field intensity distribution based on the data analysis results output by the signal analysis module.

[0004] Furthermore, the mobile suspended conductor arc discharge device also includes: a high-voltage generator, a transformer, and an insulating support; the high-voltage energizing device is a power transmission line; The high-voltage generator is used to generate AC signals, which are then stepped up by a transformer to output high-voltage electricity of different voltage levels. The transmission line is connected to the output end of the transformer. One end of the two insulating pillars is set on the supporting ground, and the transmission line is erected on the other end of the two insulating pillars to simulate the actual working conditions of a high-voltage overhead transmission line. The suspended conductor is fixed to the insulating plate of the position adjustment unit by means of a metal ball or metal rod, and is located directly below the power transmission line, in order to simulate live-line working equipment.

[0005] Furthermore, the signal receiving module uses a biconical log-periodic antenna operating in the frequency band of 30MHz to 6GHz; The RF output terminal of the signal receiving module is connected to the input terminal of the preamplifier low-noise amplifier of the signal conditioning module via a low-loss shielded RF cable. The low-loss shielded RF cable has an SMA standard interface.

[0006] Furthermore, the signal conditioning module consists of a pre-amplifier and an adjustable attenuator connected in series; The preamplifier is used to suppress background noise of the radio frequency signal transmitted by the signal receiving module; and to transmit the radio frequency signal with background noise removed to the adjustable attenuator. The output of the adjustable attenuator is connected to the input of the spectrum analyzer of the signal analysis module via a low-loss shielded RF cable; the adjustable attenuator is used to precisely adjust the amplitude of the RF signal with background noise removed to the range of 0~60dB.

[0007] Furthermore, the signal analysis module includes a spectrum analyzer and a vector network analyzer; The input terminal of the spectrum analyzer is connected to the output terminal of the adjustable attenuator via a low-loss shielded radio frequency cable. The data interface of the spectrum analyzer communicates bidirectionally with the computer of the data processing module to realize real-time transmission of measurement data and issuance of control commands. The vector network analyzer can be selectively connected to corresponding components in the biconical log-periodic antenna, the preamplifier low-noise amplifier, and the adjustable attenuator via a switchable RF link module and a low-loss shielded RF cable. The spectrum analyzer is used to perform frequency characteristic analysis, amplitude quantization measurement, and synchronous data acquisition of multiple detection methods for radio frequency electrical signals. The vector network analyzer is used to measure the parameters of a biconical log-periodic antenna and verify its performance.

[0008] Furthermore, it also includes: The calibration module provides standard reference signals for the individual calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module, and data processing module. Based on the standard reference signals, the calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module, and data processing module is realized.

[0009] Furthermore, the data processing module consists of a computer and its built-in automatic measurement software. The computer communicates with the spectrum analyzer, vector network analyzer, and standard pulse source via signal transmission cables.

[0010] This invention also provides a far-field measurement method for the spatial radiation field of an arc discharge of a moving suspended conductor. The method is implemented using a far-field measurement system for the spatial radiation field of an arc discharge of a moving suspended conductor as described in any of the preceding claims. The far-field measurement method for the spatial radiation field of an arc discharge of a moving suspended conductor includes: The distance between the suspended conductor and the high-voltage energized device is adjusted to a preset spacing. A wideband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor is received through a biconical log-periodic antenna. The wideband far-field electromagnetic radiation signal is then converted into a transmittable radio frequency signal. The radio frequency electrical signal is analyzed and interpreted using a spectrum analyzer, and the data analysis results of the radio frequency electrical signal are output. By setting the frequency range of the spectrum analyzer, radio interference signals at different frequencies can be measured synchronously. Based on the data analysis results, the electric field intensity distribution is calculated.

[0011] The present invention also provides a computer-readable storage medium storing a computer program for performing the method described in the preceding claims.

[0012] The present invention also provides an electronic device, the electronic device comprising: processor; Memory used to store the processor's executable instructions; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method described in the preceding claims.

[0013] This invention provides a far-field measurement system and method for the spatial radiation field of a mobile suspended conductor arc discharge, comprising: a mobile suspended conductor arc discharge device, a signal receiving module, a signal conditioning module, a signal analysis module, and a data processing module; adjusting the distance between the suspended conductor and the high-voltage energized device by adjusting the position adjustment unit in the mobile suspended conductor arc discharge device; the signal receiving module receives the broadband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor during the adjustment of the distance between the suspended conductor and the high-voltage energized device using a biconical log-periodic antenna, converts the broadband far-field electromagnetic radiation signal into a transmittable radio frequency (RF) signal, and transmits the RF signal to the signal conditioning module; the signal conditioning module conditions the RF signal transmitted by the signal receiving module; the signal analysis module analyzes and interprets the RF signal transmitted by the signal conditioning module using a spectrum analyzer, and outputs the data analysis results of the RF signal; the data processing module calculates the electric field intensity distribution based on the data analysis results output by the signal analysis module. The method and system provided by this invention eliminate the influence of non-standard connections and equipment errors from the source by connecting and calibrating the equipment through standardized radio frequency links, thus significantly improving measurement accuracy. By simultaneously measuring with four detection methods, the amplitude, average intensity, instantaneous value and energy characteristics of radio interference are fully captured, ensuring the multidimensionality and reliability of the data. Attached Figure Description

[0014] Figure 1 This is a detailed structural diagram of a far-field measurement system for the spatial radiation field of an arc discharge of a moving suspended conductor, provided in an embodiment of the present invention. Figure 2 This is a schematic flowchart of a far-field measurement method for the spatial radiation field of an arc discharge of a moving suspended conductor, according to an embodiment of the present invention. Detailed Implementation

[0015] Numerous specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0016] This invention provides a far-field measurement system for the spatial radiation field of a moving suspended conductor arc discharge, comprising: a moving suspended conductor arc discharge device, a signal receiving module, a signal conditioning module, a signal analysis module, and a data processing module; wherein, The mobile suspended conductor arc discharge device includes a position adjustment unit, a high-voltage energizing device, and a suspended conductor. The position adjustment unit is used to adjust the distance between the suspended conductor and the high-voltage energizing device. The signal receiving module is used to receive the broadband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor during the process of adjusting the distance between the suspended conductor and the high-voltage energized device using a biconical log-periodic antenna, convert the broadband far-field electromagnetic radiation signal into a transmittable radio frequency signal, and transmit the radio frequency signal to the signal conditioning module. The signal conditioning module is used to condition the radio frequency electrical signals transmitted by the signal receiving module; The signal analysis module uses a spectrum analyzer to parse and analyze the radio frequency electrical signal transmitted by the signal conditioning module, and outputs the data analysis results of the radio frequency electrical signal. The data processing module is used to calculate the electric field intensity distribution based on the data analysis results output by the signal analysis module.

[0017] The detailed structural diagram of the far-field measurement system is shown below. Figure 1 As shown in the figure: 1 is a high-voltage generator, 2 is a transformer, 3 is a transmission line, 4 is an insulating support, 5 is a suspended conductor, 6 is a position adjustment unit, 601 is a controller, 602 is an adjusting spring, 603 is an insulating plate, 7 is a biconical log-periodic antenna, 8 is a low-loss shielded RF cable, 9 is a preamplifier low-noise amplifier, 10 is an adjustable attenuator, 11 is a spectrum analyzer, 12 is a vector network analyzer, 13 is a switchable RF link module, 14 is a standard pulse source, and 15 is a computer.

[0018] Preferably, the mobile suspended conductor arc discharge device further includes: a high-voltage generator, a transformer, and an insulating support; the high-voltage energizing device is a power transmission line; Preferably, the high-voltage generator is used to generate an AC signal with a frequency of 50Hz. After the AC signal is stepped up by a transformer, it outputs high-voltage electricity with different voltage levels including 220V, 10kV and 35kV, to provide stable energy for arc discharge. The transmission line is connected to the output end of the transformer. One end of the two insulating pillars is set on the supporting ground, and the transmission line is erected on the other end of the two insulating pillars to simulate the actual working conditions of a high-voltage overhead transmission line. Preferably, the suspended conductor is a metal ball or metal rod fixed on the insulating plate of the position adjustment unit and located directly below the power transmission line to simulate live-line working equipment.

[0019] The signal receiving module uses a biconical log-periodic antenna operating in the 30MHz~6GHz frequency band, exhibiting omnidirectional radiation characteristics and employing vertical polarization to match the polarization characteristics of arc discharge. It receives broadband far-field electromagnetic radiation signals generated by arc discharge from a moving, suspended conductor, converts them into transmittable radio frequency (RF) signals, and transmits them to the signal conditioning module via a low-loss shielded RF cable. Simultaneously, its omnidirectional radiation characteristics and vertical polarization design ensure efficient acquisition of radiation signals from different orientations and with matching polarization. Preferably, the RF output terminal of the signal receiving module is connected to the input terminal of the preamplifier low-noise amplifier of the signal conditioning module through a low-loss shielded RF cable to ensure distortion-free transmission of far-field radiated signals. Preferably, the low-loss shielded RF cable has a characteristic impedance of 50Ω and an SMA standard interface. Preferably, the signal receiving module is installed 5m away from the discharge area, with no metal obstructions within a preset range of 1m, to avoid reflection or interference of the radiation signal by surrounding objects.

[0020] Preferably, the signal conditioning module consists of a preamplifier and an adjustable attenuator connected in series, both with a 50Ω impedance design to ensure link impedance matching. It is used to specifically condition the weak radio frequency signals transmitted by the signal receiving module.

[0021] Preferably, the preamplifier low-noise amplifier is used to suppress the background noise of the weak radio frequency signal transmitted by the signal receiving module, improve the signal-to-noise ratio of the weak signal, and ensure that the small-amplitude radiated signal can be effectively detected; then, the radio frequency signal with background noise removed is transmitted to the adjustable attenuator. Preferably, the output of the adjustable attenuator is connected to the input of the spectrum analyzer of the signal analysis module via a low-loss shielded RF cable; the adjustable attenuator is used to precisely adjust the amplitude of the RF signal with background noise removed to the range of 0~60dB, so that the signal amplitude is in the optimal measurement range of the spectrum analyzer, and avoids damage to the signal analysis module due to strong signal overload.

[0022] Preferably, the input terminal of the preamplifier is connected to the output terminal of the biconical log-periodic antenna via a low-loss shielded RF cable, and the output terminal is connected to the input terminal of the adjustable attenuator via a similar cable.

[0023] Preferably, the output of the adjustable attenuator is connected to the spectrum analyzer input of the signal analysis module via a low-loss shielded RF cable.

[0024] The signal analysis module includes a spectrum analyzer and a vector network analyzer. It is used for signal analysis and link matching verification.

[0025] Preferably, the spectrum analyzer is used to perform frequency characteristic analysis of radiated signals, amplitude quantization measurement, and synchronous data acquisition using multiple detection methods.

[0026] Preferably, the vector network analyzer is used to measure the parameters (reflection characteristics) of the biconical log-periodic antenna and the parameters (transmission characteristics) of the signal transmission link, to verify the antenna performance and the link matching status between modules, and to ensure that the measurement link transmission is stable and distortion-free.

[0027] Preferably, the input terminal of the spectrum analyzer is connected to the output terminal of the adjustable attenuator via a low-loss shielded radio frequency cable, and its data interface communicates bidirectionally with the computer of the data processing module to realize real-time transmission of measurement data and issuance of control commands.

[0028] Preferably, the vector network analyzer can be selectively connected to corresponding components in the biconical log-periodic antenna, the preamplifier, and the adjustable attenuator via a switchable RF link module and a low-loss shielded RF cable.

[0029] Preferably, it further includes: a calibration module, used to provide standard reference signals for the individual calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module and data processing module, and to realize the calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module and data processing module based on the standard reference signals.

[0030] The data processing module consists of a computer and its built-in automatic measurement software. The computer communicates with the spectrum analyzer, vector network analyzer, and standard pulse source via signal transmission cables to realize calibration data storage, uncertainty calculation, multi-trace data synchronous recording, data correction, and analysis output functions.

[0031] Based on the same inventive concept, this invention also provides a far-field measurement method for the spatial radiation field of an arc discharge of a moving suspended conductor. The method is implemented using a far-field measurement system for the spatial radiation field of an arc discharge of a moving suspended conductor, and includes: The distance between the suspended conductor and the high-voltage energized device is adjusted to a preset spacing. A wideband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor is received through a biconical log-periodic antenna. The wideband far-field electromagnetic radiation signal is then converted into a transmittable radio frequency signal. The radio frequency electrical signal is analyzed and interpreted using a spectrum analyzer, and the data analysis results of the radio frequency electrical signal are output. Based on the data analysis results, the electric field intensity distribution is calculated.

[0032] Preferably, in an anechoic chamber, a standard pulse source is individually connected to each device via a switchable RF link module, and calibration is performed one by one. During the calibration process, the calibration parameters of each device are recorded: For a biconical log-periodic antenna, the gain, VSWR, and radiation efficiency at different frequency points within the 30MHz~6GHz band are measured, and the calibration curves are recorded; For a preamplifier with low noise, the gain flatness, noise figure, and input-output matching characteristics within the 30MHz~6GHz band are measured to ensure that the gain fluctuation is ≤1dB; For an adjustable attenuator, the deviation between the actual attenuation value and the nominal value at each attenuation level from 0 to 60dB is verified to ensure that the deviation is ≤0.5dB; For a spectrum analyzer, the frequency accuracy, amplitude measurement accuracy, and consistency of the four detection methods (positive peak value, average value, sampled value, and root mean square value) within the 30MHz~6GHz band are calibrated; For a vector network analyzer, the port calibration is performed using the SOLT (short-circuit, open-circuit, loaded, through) calibration method to ensure that the S-parameter measurement accuracy is ≤0.1dB.

[0033] Preferably, the calibration data obtained in step S201 is imported into the automatic measurement software. The software automatically identifies the inherent errors of each device and the calibration-introduced errors, and combines these with link transmission loss errors and laboratory environmental interference errors to calculate the system's combined standard uncertainty using the root sum of squares method. If the combined standard uncertainty is >3dB, the devices with excessive deviations are recalibrated until the uncertainty meets the measurement requirement of ≤3dB.

[0034] Preferably, the physical connection of all components is completed according to the modular connection relationship described in the far-field measurement system for the spatial radiation field of a mobile suspended conductor arc discharge. Low-loss shielded RF cables are used to ensure signal transmission, and all interfaces adopt SMA standard interfaces and are tightened to avoid poor contact. The parameters of the biconical log-periodic antenna are measured using a vector network analyzer, and the antenna mounting position and angle are adjusted to ensure that the voltage standing wave ratio (VSWR) is less than 2 in the operating frequency band. The signal transmission link parameters of the system are measured, and the power supply and gain settings of the preamplifier are adjusted. The initial setting of the adjustable attenuator is set to 30dB to ensure good matching of the entire link and stable signal transmission loss.

[0035] Preferably, the distance between the suspended conductor and the transmission line is adjusted by moving the position adjustment unit of the suspended conductor arc discharge device; the discharge voltage is set by the high voltage generator, the device is started to generate a stable arc discharge, the discharge status is observed, and it is ensured that there is no abnormal discharge or short circuit.

[0036] Preferably, the automatic measurement software receives data from four traces, and performs equipment error correction and link loss compensation on the data in conjunction with the calibration parameters in step S201; it quantifies the reliability of the data based on the uncertainty assessment results; after removing abnormal data introduced by environmental interference through an outlier identification algorithm, it analyzes the radiation intensity distribution of each frequency band, plots the spectral characteristic curve, and calculates the electric field intensity distribution in conjunction with antenna gain, measurement distance, and calibration parameters.

[0037] Specific application examples This invention provides a far-field measurement system for the spatial radiation field of a moving suspended conductor arc discharge, which consists of a moving suspended conductor arc discharge device, a signal receiving module, a signal conditioning module, a signal analysis module, a calibration module, and a data processing module.

[0038] The mobile suspended conductor arc discharge device consists of a high-voltage generator 1, a transformer 2, a transmission line 3, an insulating support 4, a suspended conductor 5, and a position adjustment unit 6, which can realize the position movement of the suspended conductor 5 and the control of arc discharge.

[0039] Preferably, the discharge area of ​​the mobile suspended conductor arc discharge device serves as the signal radiation source for the entire measurement system, maintaining a far-field distance from the signal receiving module.

[0040] Preferably, the high-voltage generator 1 is used to generate an AC signal with a frequency of 50Hz, which is stepped up by the transformer 2 and outputs high-voltage electricity of different voltage levels such as 220V, 10kV, and 35kV to provide stable energy for arc discharge.

[0041] Preferably, the transmission line 3 is connected to the output end of the transformer 2 and is supported by two insulating pillars 4, maintaining a safe height above the ground to simulate the actual working conditions of a high-voltage overhead transmission line.

[0042] Preferably, the suspended conductor 5 can be a metal ball or a metal rod fixed on the insulating plate of the position adjustment unit and located directly below the transmission line 3 to simulate live-line working equipment.

[0043] Preferably, the position adjustment unit 6 consists of a controller 601, an adjustment spring 602, and an insulating plate 603, which can realize continuous adjustment of the distance between the suspended conductor 5 and the transmission line 3.

[0044] The signal receiving module employs a biconical log-periodic antenna 7, operating in the 30MHz~6GHz frequency band, and features omnidirectional radiation characteristics. It utilizes vertical polarization to match the polarization characteristics of the arc discharge. This antenna is used to receive broadband far-field electromagnetic radiation signals generated by the arc discharge of a moving, suspended conductor, converting them into transmittable radio frequency (RF) signals. These signals are then transmitted to the signal conditioning module via a low-loss shielded RF cable 8. Furthermore, the omnidirectional radiation characteristics and vertical polarization design ensure efficient capture of radiation signals from different orientations and with matching polarization.

[0045] Preferably, the RF output terminal of the signal receiving module is connected to the input terminal of the preamplifier 9 of the signal conditioning module via a low-loss shielded RF cable 8 to ensure distortion-free transmission of far-field radiated signals.

[0046] Preferably, the low-loss shielded RF cable 8 has a characteristic impedance of 50Ω and an SMA standard interface.

[0047] Preferably, the signal receiving module is installed 5m away from the discharge area, with no metal obstructions within 1m around it, to avoid reflection or interference of the radiation signal by surrounding objects.

[0048] The signal conditioning module consists of a pre-amplifier 9 and an adjustable attenuator 10 connected in series, both with a 50Ω impedance design to ensure link impedance matching. It is used to specifically condition the weak radio frequency signals transmitted by the signal receiving module.

[0049] Preferably, the preamplifier low-noise amplifier 9 is used to suppress the background noise of the weak radio frequency electrical signal transmitted by the signal receiving module, improve the signal-to-noise ratio of the weak signal, and ensure that the small-amplitude radiation signal can be effectively detected.

[0050] Preferably, the adjustable attenuator 10 is used to precisely adjust the amplitude of the weak radio frequency electrical signal transmitted by the signal receiving module to the range of 0~60dB, so that the signal amplitude is within the optimal measurement range of the spectrum analyzer, and avoids damage to the signal analysis module due to strong signal overload.

[0051] Preferably, the input terminal of the preamplifier low-noise amplifier 9 is connected to the output terminal of the biconical log-periodic antenna 7 via a low-loss shielded RF cable 8, and the output terminal is connected to the input terminal of the adjustable attenuator 10 via a similar cable.

[0052] Preferably, the output of the adjustable attenuator 10 is connected to the input of the spectrum analyzer 11 of the signal analysis module via a low-loss shielded RF cable 8.

[0053] The signal analysis module includes a spectrum analyzer 11 and a vector network analyzer 12. It is used for signal analysis and link matching verification.

[0054] Preferably, the spectrum analyzer 11 is used to perform frequency characteristic analysis of the radiated signal, amplitude quantization measurement, and synchronous data acquisition using multiple detection methods.

[0055] Preferably, the vector network analyzer 12 is used to measure the S11 parameters (reflection characteristics) of the biconical log-periodic antenna 7 and the parameters (transmission characteristics) of the signal transmission link, to verify the antenna performance and the link matching status between modules, and to ensure that the measurement link transmission is stable and distortion-free.

[0056] Preferably, the input terminal of the spectrum analyzer 11 is connected to the output terminal of the adjustable attenuator 10 via a low-loss shielded radio frequency cable 8, and its data interface communicates bidirectionally with the computer of the data processing module to realize real-time transmission of measurement data and issuance of control commands.

[0057] Preferably, the vector network analyzer 12 can be selectively connected to the biconical log-periodic antenna 7, the preamplifier 9, and the adjustable attenuator 10 via a switchable RF link module 13 and a low-loss shielded RF cable 8.

[0058] The calibration module uses a standard pulse source 14 with an output frequency range of 100kHz–1GHz. It is connected to a biconical log-periodic antenna 7, a preamplifier 9, an adjustable attenuator 10, and a vector network analyzer 12 via a switchable RF link module 13 and a low-loss shielded RF cable 8, respectively, to provide standard reference signals for the individual calibration of each device and realize device calibration.

[0059] The data processing module consists of a computer 15 and its built-in automatic measurement software. The computer communicates with the spectrum analyzer 11, the vector network analyzer 12, and the standard pulse source 14 via a signal transmission cable to realize calibration data storage, uncertainty calculation, multi-trace data synchronous recording, data correction, and analysis output functions.

[0060] This invention also provides a method for far-field measurement of the spatial radiation field of an arc discharge in a moving suspended conductor, the specific steps of which are as follows: Step S201: Individual equipment calibration In the anechoic chamber, a standard pulse source was individually connected to each device via a switchable RF link module, and calibration was performed one by one. During the calibration process, the calibration parameters of each device were recorded: For the biconical log-periodic antenna, the gain, VSWR, and radiation efficiency at different frequency points within the 30MHz~6GHz band were measured, and the calibration curves were recorded; For the preamplifier low-noise amplifier, the gain flatness, noise figure, and input-output matching characteristics within the 30MHz~6GHz band were measured to ensure that the gain fluctuation was ≤1dB; For the adjustable attenuator, the deviation between the actual attenuation value and the nominal value at each attenuation level from 0 to 60dB was verified to ensure that the deviation was ≤0.5dB; For the spectrum analyzer, the frequency accuracy, amplitude measurement accuracy, and consistency of the four detection methods (positive peak, average, sampled value, and root mean square) within the 30MHz~6GHz band were calibrated; For the vector network analyzer, the SOLT (short-circuit, open-circuit, loaded, through) calibration method was used to complete the port calibration to ensure that the S-parameter measurement accuracy was ≤0.1dB.

[0061] Step S202: Uncertainty Assessment The calibration data obtained in step S201 is imported into the automatic measurement software. The software automatically identifies the inherent errors of each device and the calibration-introduced errors. Combining these with link transmission loss errors and laboratory environmental interference errors, the system's combined standard uncertainty is calculated using the root sum of squares method. If the combined standard uncertainty is >3dB, the devices with excessive deviations are recalibrated until the uncertainty meets the measurement requirement of ≤3dB.

[0062] Step S203: System Setup and Debugging The physical connections of all components were completed according to the modular connection relationships described in the far-field measurement system for the spatial radiation field of a mobile suspended conductor arc discharge. Low-loss shielded RF cables were used to ensure signal transmission, and all interfaces adopted SMA standard interfaces and were tightened to avoid poor contact. The parameters of the biconical log-periodic antenna were measured using a vector network analyzer, and the antenna mounting position and angle were adjusted to ensure that the voltage standing wave ratio (VSWR) within the operating frequency band was less than 2. The signal transmission link parameters of the system were measured, and the power supply and gain settings of the preamplifier low-noise amplifier were adjusted. The initial setting of the adjustable attenuator was set to 30dB to ensure good matching of the entire link and stable signal transmission loss.

[0063] Step S204: Setting Arc Discharge Parameters The distance between the suspended conductor and the transmission line is adjusted by moving the position adjustment unit of the suspended conductor arc discharge device; the discharge voltage is set by the high voltage generator, the device is started to generate a stable arc discharge, and the discharge status is observed to ensure that there is no abnormal discharge or short circuit.

[0064] Step S205: Measurement using multiple detection methods The spectrum analyzer was set to measure a frequency range of 30MHz to 6GHz, a resolution bandwidth of 1MHz, and a scan time of 1s. Four measurement traces—positive peak detection, average value detection, sampled value detection, and root mean square detection—were simultaneously activated to measure radio interference signals at different frequencies, comprehensively capturing the multidimensional characteristics of the radiated signals.

[0065] The positive peak detection trace is used to capture the maximum amplitude of the signal, the average value detection trace is used to reflect the average intensity of the signal, the sampled value detection trace is used to collect the instantaneous value of the signal in real time, and the root mean square detection trace is used to characterize the signal energy.

[0066] Step S206: Data Processing The automatic measurement software receives data from four traces and, in conjunction with the calibration parameters from step S201, performs equipment error correction and link loss compensation on the data. Based on the uncertainty assessment results from step S202, it quantifies and labels the data reliability. After removing abnormal data introduced by environmental interference through an outlier identification algorithm, it analyzes the radiation intensity distribution of each frequency band, plots the spectral characteristic curve, and calculates the electric field intensity distribution in conjunction with antenna gain, measurement distance, and calibration parameters.

[0067] This invention provides a far-field measurement system and method for the spatial radiation field of arc discharge in a mobile suspended conductor. By standardizing the radio frequency link connection and individually calibrating the equipment, the influence of non-standard connection and equipment error is eliminated from the source, significantly improving the measurement accuracy. By simultaneously measuring with four detection methods, the amplitude, average intensity, instantaneous value and energy characteristics of radio interference are comprehensively captured, ensuring the multidimensionality and reliability of the data.

[0068] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0069] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0070] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0071] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A far-field measurement system for the spatial radiation field of an arc discharge in a moving suspended conductor, characterized in that, include: The mobile suspended conductor arc discharge device includes a signal receiving module, a signal conditioning module, a signal analysis module, and a data processing module. The mobile suspended conductor arc discharge device includes a position adjustment unit, a high-voltage energizing device, and a suspended conductor. The position adjustment unit is used to adjust the distance between the suspended conductor and the high-voltage energizing device. The signal receiving module is used to receive the broadband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor during the process of adjusting the distance between the suspended conductor and the high-voltage energized device using a biconical log-periodic antenna, convert the broadband far-field electromagnetic radiation signal into a transmittable radio frequency signal, and transmit the radio frequency signal to the signal conditioning module. The signal conditioning module is used to condition the radio frequency electrical signals transmitted by the signal receiving module; The signal analysis module uses a spectrum analyzer to parse and analyze the radio frequency electrical signal transmitted by the signal conditioning module, and outputs the data analysis results of the radio frequency electrical signal. The data processing module is used to calculate the electric field intensity distribution based on the data analysis results output by the signal analysis module.

2. The system according to claim 1, characterized in that, The mobile suspended conductor arc discharge device further includes: a high-voltage generator, a transformer, and an insulating support; the high-voltage energizing device is a transmission line; The high-voltage generator is used to generate AC signals, which are then stepped up by a transformer to output high-voltage electricity of different voltage levels. The transmission line is connected to the output end of the transformer. One end of the two insulating pillars is set on the supporting ground, and the transmission line is erected on the other end of the two insulating pillars to simulate the actual working conditions of a high-voltage overhead transmission line. The suspended conductor is fixed to the insulating plate of the position adjustment unit by means of a metal ball or metal rod, and is located directly below the power transmission line, in order to simulate live-line working equipment.

3. The system according to claim 1, characterized in that, The biconical log-periodic antenna operates in the frequency band of 30MHz to 6GHz. The RF output terminal of the signal receiving module is connected to the input terminal of the preamplifier low-noise amplifier of the signal conditioning module via a low-loss shielded RF cable. The low-loss shielded RF cable has an SMA standard interface.

4. The system according to claim 1, characterized in that, The signal conditioning module consists of a pre-amplifier and an adjustable attenuator connected in series. The preamplifier is used to suppress background noise of the radio frequency signal transmitted by the signal receiving module; and to transmit the radio frequency signal with background noise removed to the adjustable attenuator. The output of the adjustable attenuator is connected to the input of the spectrum analyzer of the signal analysis module via a low-loss shielded RF cable; the adjustable attenuator is used to precisely adjust the amplitude of the RF signal with background noise removed to the range of 0~60dB.

5. The system according to claim 1, characterized in that, The signal analysis module includes a spectrum analyzer and a vector network analyzer; The input terminal of the spectrum analyzer is connected to the output terminal of the adjustable attenuator via a low-loss shielded radio frequency cable. The data interface of the spectrum analyzer communicates bidirectionally with the computer of the data processing module to realize real-time transmission of measurement data and issuance of control commands. The vector network analyzer can be selectively connected to corresponding components in the biconical log-periodic antenna, the preamplifier low-noise amplifier, and the adjustable attenuator via a switchable RF link module and a low-loss shielded RF cable. The spectrum analyzer is used to perform frequency characteristic analysis, amplitude quantization measurement, and synchronous data acquisition of multiple detection methods for radio frequency electrical signals. The vector network analyzer is used to measure the parameters of a biconical log-periodic antenna and verify its performance.

6. The system according to claim 1, characterized in that, Also includes: The calibration module provides standard reference signals for the individual calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module, and data processing module. Based on the standard reference signals, the calibration of each device in the mobile suspended conductor arc discharge device, signal receiving module, signal conditioning module, signal analysis module, and data processing module is realized.

7. The system according to claim 1, characterized in that, The data processing module consists of a computer and its built-in automatic measurement software. The computer communicates with the spectrum analyzer, vector network analyzer and standard pulse source via signal transmission cables.

8. A far-field measurement method for the spatial radiation field of an arc discharge of a moving suspended conductor, wherein the method is applied to the far-field measurement system for the spatial radiation field of an arc discharge of a moving suspended conductor as described in any one of claims 1-7, characterized in that, The far-field measurement method for the spatial radiation field of the arc discharge of the moving suspended conductor includes: The distance between the suspended conductor and the high-voltage energized device is adjusted to a preset spacing. A wideband far-field electromagnetic radiation signal generated by the arc discharge of the suspended conductor is received through a biconical log-periodic antenna. The wideband far-field electromagnetic radiation signal is then converted into a transmittable radio frequency signal. The radio frequency electrical signal is analyzed and interpreted using a spectrum analyzer, and the data analysis results of the radio frequency electrical signal are output. Based on the data analysis results, the electric field intensity distribution is calculated.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for performing the method described in claim 8.

10. An electronic device, characterized in that, The electronic device includes: processor; Memory used to store the processor's executable instructions; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method of claim 8.

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