Transformer winding deformation tester verification device and method, electronic equipment and medium

Abstract

The invention discloses a transformer winding deformation tester verification device and method, electronic equipment and a medium, and relates to the technical field of transformers, the verification device is connected with terminal equipment provided with verification software through a communication port, and the terminal equipment is used for receiving an initial verification parameter and a verification task starting instruction input by a user; the signal port is connected with a signal excitation port of the tester and is used for transmitting an excitation signal with known frequency and amplitude generated by the standard signal source; the input port is connected with a signal reference port of the tester and is used for receiving a reference signal returned by the tester; the output port is connected with a signal response port of the tester and is used for receiving a response signal generated by the tester according to the excitation signal; the verification equipment adaptively adjusts the equipment parameters based on the detection data and a parameter adjustment algorithm, and obtains target detection data according to the verification equipment after the equipment parameters are adjusted; and processing the target detection data through verification software deployed on the terminal equipment to obtain a target verification result.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and more particularly to a transformer winding deformation tester calibration device, method, electronic equipment and medium. Background Art

[0002] Transformer winding deformation refers to the change in the geometric shape of the transformer winding during operation due to mechanical shock, temperature change, aging and other factors. This deformation may cause insulation damage, partial discharge, and even serious failures. Therefore, using a transformer winding deformation tester to test the transformer winding and detect winding deformation in a timely and effective manner will help avoid transformer accidents, ensure the safe and stable operation of the power system, and improve the reliability of the power grid. At the same time, how to ensure the measurement accuracy of the transformer winding deformation tester so that the tester can accurately evaluate the true condition of the transformer winding and help technicians to promptly discover minor deformations or potential problems; reducing the misjudgment rate, reducing unnecessary maintenance costs or delays in maintenance, etc. are also issues that need to be urgently addressed.

[0003] The publication number is CN206479625U, and the name is a transformer winding deformation tester calibration device. The main points are that it consists of a microprocessor, a frequency reading op amp circuit, a high bandwidth, serial interface multiplication DAC, a programmable audio amplifier and a host computer. The host computer is connected to the microprocessor, the microprocessor is respectively connected to the frequency reading op amp circuit, the high bandwidth, serial interface multiplication DAC, and the programmable audio amplifier, the high bandwidth, serial interface multiplication DAC is connected to the programmable audio amplifier, the signal input is respectively connected to the frequency reading op amp circuit, the high bandwidth, serial interface multiplication DAC, and the programmable audio amplifier has a signal output interface.

[0004] The publication number is CN203657735U, and the name is a transformer winding deformation tester, which includes a test host, the test host includes a shell, and the shell is internally provided with a DDS device connected in sequence, the analog-to-digital conversion device and the digital filter, the DDS device is used to generate a swept frequency signal required for the tested winding, the analog-to-digital conversion device is used to collect the winding deformation signal and transmit it to the digital filter, the digital filter is used to receive and process the winding deformation signal transmitted by the digital-to-analog conversion device, a notebook, connected to the test host, used to receive the winding deformation signal transmitted by the digital-to-analog conversion device and process it to form a frequency response characteristic curve of the winding, a verification device, connected to the test host, and a data diagnosis device, connected to the test host.

[0005] The calibration device of the transformer winding deformation tester provided in the related art mainly performs calibration by simulating a standard signal source and receiving data returned by the tester, thereby verifying the accuracy and stability of the tester. Since the calibration device in the related art cannot provide sufficiently high frequency stability and amplitude accuracy, the measurement error for the tester is large, and since the calibration parameters often use fixed parameter settings, it is difficult to cope with changes under different environmental conditions, affecting the accuracy of the calibration results. Furthermore, the calibration device provided in the related art only supports specific models of testers and performs specific types of calibration tasks, and the applicable scenarios are relatively narrow.

[0006] Therefore, how to provide a transformer winding deformation tester calibration device, method, electronic equipment and medium is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0007] In view of this, the present invention provides a transformer winding deformation tester calibration device, method, electronic device and medium, aiming to solve the technical problems in the related art that the transformer winding deformation tester calibration device has large measurement errors, low calibration result accuracy and narrow application scenarios.

[0008] In order to achieve the above object, the present invention adopts the following technical solution: A calibration device for a transformer winding deformation tester comprises: a calibration device, a signal port, an input port, an output port, and a communication port; wherein: The verification device is connected to a terminal device equipped with verification software via the communication port, and the terminal device is used to receive initial verification parameters and verification task start instructions input by a user; The signal port is connected to the signal excitation port of the tester, and is used to transmit an excitation signal of known frequency and amplitude generated by a standard signal source; the input port is connected to the signal reference port of the tester, and is used to receive a reference signal returned by the tester; the output port is connected to the signal response port of the tester, and is used to receive a response signal generated by the tester according to the excitation signal; The verification device is provided with a parameter adjustment algorithm, and the verification device adaptively adjusts the device parameters based on the detection data and the parameter adjustment algorithm, and obtains target detection data according to the verification device after the device parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The verification device also sends the target detection data to the terminal device via the communication port, so that the target detection data is processed by the verification software deployed on the terminal device to obtain a target verification result.

[0009] Furthermore, the calibration device includes a plurality of components, including a standard signal source, a signal amplifier or attenuator, an impedance matching network, a frequency selection filter, a data acquisition module and an intelligent algorithm processor; wherein, The standard signal source is used to generate an excitation signal of known frequency and amplitude, and transmit the excitation signal to the signal excitation port of the tester through the signal port; The signal amplifier / attenuator is used to adjust the signal amplitude to meet the measurement requirements indicated in various calibration tasks; The impedance matching network is used to optimize the impedance matching between signal ports to reduce signal transmission and distortion; The frequency selective filter is used to select a signal within a target frequency range; The data acquisition module is used to collect and record the reference signal and the response signal sent by the tester, and determine the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The intelligent algorithm processor is provided with a parameter adjustment algorithm for analyzing and comparing the detection data, and adaptively adjusting the component parameters of multiple components in the verification device according to the analysis and comparison results.

[0010] Furthermore, the parameter adjustment algorithm set in the intelligent algorithm processor includes: frequency stability control algorithm, amplitude accuracy control algorithm, gain stability control algorithm, impedance matching optimization algorithm, filter characteristic optimization algorithm; wherein, the intelligent algorithm processor is also used for: Adjusting the frequency output parameters of the standard signal source based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; Adjusting the amplitude adjustment parameter of the signal amplifier / attenuator based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; Adjusting the parameters of the impedance matching network based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; Adjusting the parameters of the frequency selective filter based on the filter characteristic optimization algorithm to reduce noise and other interfering signals; The gain control parameters of the data acquisition module are adjusted based on the gain stability control algorithm to ensure gain stability during long-term operation.

[0011] Furthermore, the verification task includes a frequency verification task, an amplitude ratio verification task, an amplitude ratio repeatability verification task, a port impedance verification task and a frequency selection and filtering characteristic verification task; the terminal device is also used for: Receive the target detection data sent by the verification device, calculate the frequency error according to the frequency of the reference signal in the target detection data and the frequency of the excitation signal generated by the verification device, so as to complete the frequency verification task; calculate the signal amplitude ratio of the tester according to the amplitude of the reference signal and the response signal in the target detection data and compare it with the preset amplitude ratio to determine the amplitude measurement accuracy of the tester to complete the amplitude ratio verification task; calculate the relative standard deviation of the amplitude ratio measurement of the tester according to the amplitudes of the reference signal and the response signal measured multiple times to complete the amplitude ratio repeatability verification task; determine the input and output impedance values ​​of each port of the tester to complete the port impedance verification task; calculate the absolute error of the amplitude ratio according to the signal amplitudes at different frequencies to complete the frequency selection filtering characteristic verification task.

[0012] Furthermore, the verification task start instruction provided by the terminal device includes: all verification task start instructions or a single verification task start instruction.

[0013] Furthermore, the terminal device is further used based on the verification software to: The target detection data is processed based on the verification software to obtain a target verification result, which is compared with the requirements indicated by the tester calibration specification, and the tester parameter adjustment information is determined according to the comparison result.

[0014] A calibration method for a transformer winding deformation tester, comprising: When the verification device is connected to the corresponding ports of the tester and the terminal device respectively, in response to the initial verification parameters and the verification task start instruction sent by the terminal device, the verification device generates an excitation signal that meets the initial verification parameters, sends the excitation signal to the tester via the signal port of the verification device, and receives a reference signal and a response signal returned by the tester; Adaptively adjust the equipment parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device, and obtain target detection data according to the verification device after the equipment parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The target detection data is sent to the terminal device via the communication port of the verification device, so that the target detection data is processed by the verification software deployed on the terminal device to obtain a target verification result.

[0015] Furthermore, the step of adaptively adjusting the device parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device also includes: Adjusting the frequency output parameters of the standard signal source in the calibration device based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; Adjusting the amplitude adjustment parameters of the signal amplifier / attenuator in the verification device based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; Adjusting the parameters of the impedance matching network in the verification device based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; Adjusting the parameters of the frequency-selective filter in the verification device based on the filter characteristic optimization algorithm to reduce noise and other interference signals; The gain control parameters of the data acquisition module in the verification device are adjusted based on the gain stability control algorithm to ensure gain stability during long-term operation.

[0016] An electronic device comprises: a processor and a memory storing a program, wherein the program comprises instructions, and when the instructions are executed by the processor, the processor executes a calibration method for a transformer winding deformation tester.

[0017] A non-transitory machine-readable medium storing computer instructions, wherein the computer instructions are used to cause the computer to execute a calibration method for a transformer winding deformation tester.

[0018] It can be seen from the above technical scheme that the present invention discloses a transformer winding deformation tester calibration device, method, electronic device and medium. Compared with the prior art, the present invention is based on the parameter adjustment algorithm set in the calibration device. On the one hand, it can ensure the signal frequency stability and signal amplitude accuracy of the excitation signal to avoid measurement errors. On the other hand, it can dynamically optimize the performance of the calibration equipment according to the detection data to comprehensively ensure the accuracy and reliability of the calibration process. Based on this, it can provide various types of calibration tasks for testers of various models, thereby achieving the technical effect of improving the accuracy of the calibration results and expanding the applicable scenarios of the calibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 The present invention is a schematic diagram of the main frame structure of a calibration device of a transformer winding deformation tester.

[0021] Figure 2 The present invention is a schematic diagram of the main process of a calibration method for a transformer winding deformation tester.

[0022] Figure 3 The present invention is a schematic diagram of the connection between a calibration device of a transformer winding deformation tester and the tester and a terminal device.

[0023] Figure 4 The figure is a schematic structural diagram of an electronic device of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See attached Figure 1-4 The embodiment of the present invention discloses a calibration device for a transformer winding deformation tester, such as Figure 1 As shown, the calibration device of the transformer winding deformation tester mainly includes: a calibration device, a signal port, an input port, an output port, and a communication port; wherein the calibration device is connected to a terminal device equipped with a calibration software via the communication port, and the terminal device is used to receive the initial calibration parameters and the calibration task start instruction input by the user; the signal port is connected to the signal excitation port of the tester, and is used to transmit the excitation signal of known frequency and amplitude generated by the standard signal source; the input port is connected to the signal reference port of the tester, and is used to receive the reference signal returned by the tester; the output port is connected to the signal response port of the tester, and is used to receive the response signal generated by the tester according to the excitation signal; a parameter adjustment algorithm is set in the calibration device, and the calibration device adaptively adjusts the device parameters based on the detection data and the parameter adjustment algorithm, and obtains the target detection data according to the calibration device after the device parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; the calibration device also sends the target detection data to the terminal device via the communication port, so as to process the target detection data through the calibration software deployed on the terminal device to obtain the target calibration result.

[0026] The excitation signal provided in the embodiment of the present invention is an electrical signal with known characteristics generated by a standard signal source in the calibration device, and has a preset frequency and amplitude, in order to provide a stable and repeatable input condition to accurately test and calibrate the behavior of the tester.

[0027] Among them, the reference signal provided in the embodiment of the present invention is usually a reference signal obtained by minimal processing (such as possible amplification, filtering, etc.) based on the original excitation signal. This signal is used to provide a stable comparison basis for subsequent evaluation of the tester's response under different conditions. The internal circuit of the tester transmits this excitation signal almost losslessly to ensure that the reference signal maintains its original characteristics, and then sends the reference signal to the calibration device through the signal reference port. Since the reference signal maintains the characteristics of the original excitation signal, it is used for subsequent error analysis and calibration.

[0028] Among them, the response signal provided by the embodiment of the present invention is the result of the tester processing the excitation signal according to the transformer winding characteristics simulated internally. It reflects how the transformer winding changes the input signal under specific conditions (such as different loads, temperatures, etc.). The tester simulates the behavior of the transformer winding internally, performs a series of processing (such as frequency response analysis, impedance matching, etc.) on the excitation signal to generate a response signal, and sends the response signal to the verification device through the signal response port. Since the response signal reflects the result of the tester simulating the transformer winding characteristics, it is used to evaluate the actual performance of the tester.

[0029] Furthermore, the reference signal and the response signal are generated through different paths and returned to the calibration device through different ports, which helps to ensure that the two do not interfere with each other and ensure the accuracy of the measurement.

[0030] The verification device provided in the embodiment of the present invention also includes three coaxial shielded cable connection lines, which are used as port connection lines between the verification device and the tester. Specifically, coaxial shielded cables with a length of no more than 2 meters and a characteristic impedance of 50Ω are used.

[0031] Through the above settings, the verification device provided by the embodiment of the present invention generates an excitation signal of known frequency and amplitude through a standard signal source, and combines the parameter adjustment algorithm to ensure the high stability and accuracy of the excitation signal, which makes the detection data (the frequency and amplitude of the reference signal and the response signal) more accurate, thereby improving the accuracy of the overall verification. Based on the parameter adjustment algorithm, the device parameters in the verification device are adaptively adjusted, and the performance of the verification device can be dynamically optimized according to the real-time detection data. This adaptive adjustment mechanism ensures that the frequency, amplitude, gain and other characteristics of the signal during the verification process are highly stable and accurate. At the same time, all adjustment operations are performed on the verification device, which does not affect the original configuration and behavior of the tester, ensuring the authenticity, reliability and accuracy of the verification results.

[0032] According to a specific implementation method of the first embodiment of the present invention, by connecting to a terminal device equipped with calibration software through a communication port, a user can conveniently input initial calibration parameters and start a calibration task on the terminal device. The calibration software can also intuitively display the calibration results and provide a friendly operating experience. At the same time, from the generation of the excitation signal to the transmission and processing of the target detection data, the entire calibration process is highly automated, reducing manual intervention, reducing the complexity of the operation and potential human errors.

[0033] In some embodiments, the above-mentioned verification device includes multiple components, including a standard signal source, a signal amplifier or attenuator, an impedance matching network, a frequency selective filter, a data acquisition module and an intelligent algorithm processor; wherein the standard signal source is used to generate an excitation signal of known frequency and amplitude, and transmit the excitation signal to the signal excitation port of the tester through the signal port; the signal amplifier / attenuator is used to adjust the signal amplitude to meet the measurement requirements indicated in various verification tasks; the impedance matching network is used to optimize the impedance matching between the signal ports to reduce signal emission and distortion; the frequency selective filter is used to select the signal within the target frequency range; the data acquisition module is used to collect and record the reference signal and response signal sent by the tester, and determine the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; a parameter adjustment algorithm is set in the intelligent algorithm processor, which is used to analyze and compare the detection data, and adaptively adjust the component parameters of multiple components in the verification device according to the analysis and comparison results.

[0034] Specifically, the standard signal source can ensure that the generated excitation signal has a highly stable frequency and precise amplitude, providing a reliable basis for subsequent measurements. During each calibration process, the standard signal source helps to ensure the consistency of the excitation signal during each calibration process, further reducing the error caused by signal changes. The signal amplifier / attenuator can flexibly adjust the signal amplitude according to different calibration tasks to ensure the accuracy and reliability of the calibration results, and can also avoid the influence of too strong or too weak signals on the measurement results, thereby improving the accuracy of data acquisition. The impedance matching network optimizes impedance matching to minimize the loss and reflection of the signal during transmission, ensure signal integrity, and can also improve the accuracy of the measurement data by reducing the signal distortion caused by impedance mismatch. The frequency selection filter can effectively filter out noise and other interference signals of non-target frequencies to ensure the purity of the measurement data. By selectively receiving signals within the target frequency range, the signal-to-noise ratio is significantly improved, and the reliability of the measurement results is enhanced. The data acquisition module can collect the signal data returned by the tester in real time and accurately to ensure the timeliness and accuracy of the data; further, the data acquisition module not only records the signal itself, but also determines its frequency and amplitude, providing complete information for subsequent data processing and analysis. The intelligent algorithm processor dynamically adjusts the parameters of the internal components of the calibration equipment through real-time analysis of the test data to ensure the best measurement effect. And through the parameter adjustment algorithm built into the intelligent algorithm processor, it can automatically identify and correct potential problems, reduce human intervention, and improve the degree of automation of the calibration process.

[0035] The verification device provided in the embodiment of the present invention significantly improves the accuracy, reliability and efficiency of the transformer winding deformation tester verification through the coordinated work of various components, and provides a strong guarantee for the safe and stable operation of the power system.

[0036] In some of the embodiments, the parameter adjustment algorithms set in the above-mentioned intelligent algorithm processor include: frequency stability control algorithm, amplitude accuracy control algorithm, gain stability control algorithm, impedance matching optimization algorithm, and filter characteristic optimization algorithm; wherein the intelligent algorithm processor is also used to: adjust the frequency output parameters of the standard signal source based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; adjust the amplitude adjustment parameters of the signal amplifier / attenuator based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; adjust the parameters of the impedance matching network based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; adjust the parameters of the frequency selection filter based on the filter characteristic optimization algorithm to reduce noise and other interference signals; adjust the gain control parameters of the data acquisition module based on the gain stability control algorithm to ensure gain stability during long-term operation.

[0037] In some embodiments, the parameter adjustment algorithm set in the intelligent algorithm processor covers multiple key areas to ensure that the calibration equipment can maintain high accuracy and stability under different conditions.

[0038] Based on the above settings, the intelligent algorithm processor in the calibration device provided by the embodiment of the present invention ensures the optimal performance of the calibration equipment under various conditions by dynamically adjusting multiple key parameters such as frequency, amplitude, gain, impedance matching and filtering, thereby improving the overall measurement accuracy and reliability. The intelligent algorithm processor can make adaptive adjustments based on real-time detection data, provides the ability of rapid feedback and continuous improvement, and makes the calibration process more intelligent and efficient. Specifically, through algorithms such as frequency stability control and gain stability control, the influence of factors such as ambient temperature and power supply fluctuations on the measurement results is effectively reduced, ensuring stability and consistency during long-term operation. Algorithms such as filter characteristic optimization and impedance matching optimization significantly improve the signal-to-noise ratio and signal integrity, making the collected data purer and more accurate, providing a solid foundation for subsequent data processing and analysis.

[0039] In some of the embodiments, the above-mentioned verification tasks include frequency verification tasks, amplitude ratio verification tasks, amplitude ratio repeatability verification tasks, port impedance verification tasks and frequency selection filtering characteristic verification tasks; the above-mentioned terminal equipment is also used to: receive target detection data sent by the verification device, and calculate the frequency error according to the frequency of the reference signal in the target detection data and the frequency of the excitation signal generated by the verification device to complete the frequency verification task; calculate the signal amplitude ratio of the tester according to the amplitude of the reference signal and the response signal in the target detection data and compare it with the preset amplitude ratio to determine the amplitude measurement accuracy of the tester to complete the amplitude ratio verification task; calculate the relative standard deviation of the amplitude ratio measurement of the tester according to the amplitudes of the reference signal and the response signal measured multiple times to complete the amplitude ratio repeatability verification task; determine the input and output impedance values ​​of each port of the tester to complete the port impedance verification task; calculate the absolute error of the amplitude ratio according to the signal amplitude at different frequencies to complete the frequency selection filtering characteristic verification task.

[0040] When the frequency calibration task is performed by the calibration device provided by the embodiment of the present invention, high frequency accuracy: by comparing the reference signal frequency and the excitation signal frequency in the target detection data, it is ensured that the tester can accurately identify and process input signals of different frequencies, and by accurately calculating the frequency error, it helps technicians evaluate the frequency response characteristics of the tester and find potential problems in time. When performing the amplitude ratio calibration task, by comparing the amplitude of the reference signal and the response signal, it is ensured that the tester can accurately measure the amplitude change of the signal, and then further determine the detailed amplitude ratio measurement results through the calibration software, so as to help users understand the measurement accuracy of the tester under different conditions and provide a basis for subsequent improvements. When performing the amplitude ratio repeatability calibration task, the RSD (relative standard deviation) is calculated through the data of multiple measurements to evaluate the repeatability and consistency of the tester under the same conditions. Multiple measurements reduce the influence of random errors and improve the reliability of the measurement results. When performing the port impedance calibration task, it is ensured that the impedance characteristics of each port of the tester meet the requirements, avoiding signal reflection and distortion caused by impedance mismatch, and ensuring good matching between the tester and other devices, thereby improving the stability and compatibility of the overall system. When performing the frequency selection and filtering characteristic verification task, the frequency selection and filtering capability of the tester is evaluated through the absolute error of the amplitude ratio at different frequencies to ensure that it can effectively suppress interference signals of non-target frequencies. Furthermore, it also optimizes the frequency selection and filtering characteristics, improves the signal-to-noise ratio, and enhances the purity and accuracy of the measurement results.

[0041] Through the above settings, a calibration device that meets multiple calibration tasks is provided. Through multi-dimensional evaluations such as frequency calibration, amplitude ratio calibration, amplitude ratio repeatability calibration, port impedance calibration, and frequency selection filter characteristic calibration, the accuracy and reliability of the measurement results are significantly improved, the influence of human errors and environmental factors is reduced, and the calibration personnel are helped to fully understand the various performance indicators of the tester. Furthermore, the calibration results corresponding to various calibration tasks can be used to help users fully understand the status of the tester, discover and solve problems in a timely manner, and avoid potential faults.

[0042] In some of the embodiments, the verification task start instruction provided by the terminal device includes: a full verification task start instruction or a single verification task start instruction.

[0043] Based on the above settings, users can flexibly choose to start all verification tasks or a single verification task according to actual needs, without having to perform the complete verification process every time, which improves the applicability and ease of operation of the system. At the same time, for specific problems or maintenance needs, users can choose to only start a related single verification task to avoid unnecessary comprehensive verification, thereby saving time and resources and improving verification efficiency.

[0044] In some of the embodiments, the terminal device is further used based on the verification software to: process the target detection data based on the verification software, obtain the target verification result and compare it with the requirements indicated by the tester calibration specification, and determine the tester parameter adjustment information based on the comparison result.

[0045] Through the above settings, the target detection data can be processed with high precision and standardized comparison based on the calibration software to ensure the accuracy and reliability of the calibration results in compliance with industry standards. The calibration software can also automatically identify and mark parameters that do not meet the calibration specifications, and provide detailed diagnostic reports to help users quickly locate problems and improve response speed. Based on the comparison results, the calibration software can provide users with specific parameter adjustment suggestions and guide users on how to improve the tester settings to ensure its optimal performance.

[0046] The calibration device provided in the embodiment of the present invention includes a set of multifunctional calibration software, which has the functions of manual calibration, automatic calibration, automatic generation of calibration report, etc. The calibration device has at least the following functional characteristics: (1) The calibration device has high technical indicators and fully meets the requirements of calibration equipment and devices in the "DL / T 1952-2018 Calibration Specification for Transformer Winding Deformation Tester"; (2) The calibration method is diversified, and the tester can be calibrated comprehensively and completely; (3) The calibration operation is simplified, with manual calibration and automatic calibration functions, and automatic generation of calibration reports; (4) The frequency detection range is wide and the accuracy is high, and the detection range is 10Hz~10MHz; (5) The dynamic detection range is wide and the accuracy is high, and the detection range is -100dB~20dB.

[0047] The calibration device of the transformer winding deformation tester provided in the embodiment of the present invention adopts the calibration device of the transformer winding deformation tester including a calibration device, a signal port, an input port, an output port, and a communication port; wherein the calibration device is connected to a terminal device equipped with calibration software via the communication port, and the terminal device is used to receive the initial calibration parameters and the calibration task start instruction input by the user; the signal port is connected to the signal excitation port of the tester, and is used to transmit the excitation signal of known frequency and amplitude generated by the standard signal source; the input port is connected to the signal reference port of the tester, and is used to receive the reference signal returned by the tester; the output port is connected to the signal response port of the tester, and is used to receive the response signal generated by the tester according to the excitation signal; a parameter adjustment algorithm is set in the calibration device, and the calibration device adaptively adjusts the device parameters based on the detection data and the parameter adjustment algorithm, and obtains the target detection data according to the calibration device after the device parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; the calibration device also sends the target detection data to the terminal device via the communication port, so that the target detection data is processed by the calibration software deployed on the terminal device to obtain the target calibration result. The invention overcomes the problem that the calibration device of the transformer winding deformation tester in the related art cannot provide sufficiently high frequency stability and amplitude accuracy, resulting in large measurement errors for the tester, and because the calibration parameters often adopt fixed parameter settings, it is difficult to cope with changes under different environmental conditions, affecting the accuracy of the calibration results. Furthermore, the calibration device provided by the related art only supports specific models of testers, performs specific types of calibration tasks, and has a narrow application scenario. The invention realizes the calibration task received from the user via a terminal device equipped with calibration software, and provides a calibration device capable of performing diversified calibration tasks. Based on the parameter adjustment algorithm set in the calibration device, on the one hand, the signal frequency stability and signal amplitude accuracy of the excitation signal can be guaranteed to avoid measurement errors, and on the other hand, the performance of the calibration device can be dynamically optimized according to the detection data to comprehensively guarantee the accuracy and reliability of the calibration process. Based on this, it is possible to provide various types of calibration tasks for various models of testers, thereby achieving the technical effect of improving the accuracy of the calibration results and expanding the application scenarios of the calibration device.

[0048] The embodiment of the present invention further provides a calibration method for a transformer winding deformation tester, which is applied to any of the calibration devices for the transformer winding deformation tester described above. Figure 2 As shown, the calibration method of the transformer winding deformation tester provided by the embodiment of the present invention mainly includes: Step S201, when the verification device is connected to the corresponding ports of the tester and the terminal device respectively, in response to the initial verification parameters and the verification task start instruction sent by the terminal device, the verification device generates an excitation signal that meets the initial verification parameters, sends the excitation signal to the tester via the signal port of the verification device, and receives the reference signal and response signal returned by the tester.

[0049] Specifically, Figure 3 The diagram of the connection between the calibration device of the transformer winding deformation tester of an embodiment of the present invention and the tester and the terminal device is shown. The calibration device is connected to the port of the tester via three coaxial shielded cable connecting wires (according to the requirements of the "DL / T 1952-2018 Transformer Winding Deformation Tester Calibration Specification", the length of the cable connecting wire shall not exceed 2 meters and the characteristic impedance shall be 50Ω). The communication port of the calibration device is connected to the terminal device through a communication line (such as a USB communication line). By ensuring that all connections are correct and stable, data transmission errors caused by connection problems are reduced, and the reliability of the system is improved. Based on the initial calibration parameters, a highly accurate excitation signal is generated to ensure the consistency and accuracy of the measurement process. The calibration task start instruction is quickly responded to, and the generation and transmission of the excitation signal are automatically processed, which reduces manual intervention and improves work efficiency. The excitation signal is transmitted in real time and the reference signal and response signal are received to ensure the timeliness and integrity of the data, providing a solid foundation for subsequent analysis. By optimizing the signal transmission path and suppressing interference, the accuracy and reliability of the measurement results are significantly improved. The operation process is simplified, a friendly operation interface and real-time feedback are provided, and the user's operation experience and satisfaction are enhanced.

[0050] Through the above settings, not only the stable connection between the verification device and the tester and terminal equipment is ensured, but also the accuracy, reliability and efficiency of the verification are significantly improved through accurate generation of excitation signals and efficient signal transmission, providing a strong guarantee for the safe and stable operation of the power system.

[0051] Step S202, adaptively adjust the equipment parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device, and obtain target detection data according to the verification device after the equipment parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively.

[0052] Specifically, the dynamic optimization of the parameter adjustment algorithm ensures the best performance of each measurement, significantly improving the accuracy of the measurement results. The calibration process requires multiple measurements, so the continuous optimization of key parameters is achieved, ensuring that the calibration equipment maintains stable performance during long-term operation, and enhancing the reliability and consistency of the system. It is understandable that during the parameter adjustment process, the calibration equipment can automatically identify and correct potential problems, provide real-time feedback, and improve the intelligence level and response speed of the system.

[0053] According to the embodiment of the present invention, the parameter adjustment algorithm covers multiple aspects, can flexibly cope with different types of calibration tasks, meet diverse measurement requirements, and adapt to various working conditions.

[0054] Based on the above settings, the parameter adjustment algorithm not only significantly improves the measurement accuracy and reliability of the calibration equipment.

[0055] Step S203, sending the target detection data to the terminal device via the communication port of the verification device, so that the target detection data is processed by the verification software deployed on the terminal device to obtain the target verification result.

[0056] Specifically, through a stable communication port, the real-time transmission of target detection data is ensured, which reduces time delays and improves work efficiency. The verification software on the terminal device can process the target detection data efficiently and accurately, ensuring the integrity and accuracy of the data in compliance with industry standards.

[0057] According to a specific implementation of an embodiment of the present invention, the calibration software can automatically identify and mark parameters that do not meet the calibration specifications, provide a detailed diagnostic report, help users quickly locate problems, and improve response speed. Based on the comparison results, specific parameter adjustment suggestions are provided to the user to guide the user to improve the settings of the tester to ensure that its performance reaches the best state.

[0058] According to another specific implementation of the embodiment of the present invention, based on a terminal device equipped with verification software, a friendly operation interface and a detailed verification report can be provided to reduce the difficulty of operation and improve the user's operation experience and satisfaction.

[0059] Through the above settings, the entire calibration process is highly automated, reducing manual intervention and improving work efficiency, especially in batch calibration or emergency situations, reliable results can be obtained quickly. Furthermore, through data accumulation and analysis, long-term trends and potential problems can be discovered to provide support for the continuous improvement of the system and further improve the accuracy and efficiency of calibration.

[0060] In some of the embodiments, the step of adaptively adjusting the equipment parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device also includes: adjusting the frequency output parameters of the standard signal source in the verification device based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; adjusting the amplitude adjustment parameters of the signal amplifier / attenuator in the verification device based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; adjusting the parameters of the impedance matching network in the verification device based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; adjusting the parameters of the frequency selection filter in the verification device based on the filter characteristics optimization algorithm to reduce noise and other interference signals; adjusting the gain control parameters of the data acquisition module in the verification device based on the gain stability control algorithm to ensure gain stability during long-term operation.

[0061] Based on the above settings, by dynamically adjusting multiple key parameters such as frequency, amplitude, gain, impedance matching and filtering, the best performance of the calibration equipment under various conditions is ensured, and the overall measurement accuracy and reliability are improved. The intelligent algorithm processor can make adaptive adjustments based on real-time detection data, providing the ability of rapid feedback and continuous improvement, making the calibration process more intelligent and efficient. Specifically, through algorithms such as frequency stability control and gain stability control, the impact of factors such as ambient temperature and power supply fluctuations on the measurement results is effectively reduced, ensuring stability and consistency during long-term operation. Algorithms such as filter characteristic optimization and impedance matching optimization significantly improve the signal-to-noise ratio and signal integrity, making the collected data purer and more accurate, providing a solid foundation for subsequent data processing and analysis.

[0062] The calibration method of the transformer winding deformation tester provided in the embodiment of the present invention adopts the method that, after the calibration device is connected to the corresponding ports of the tester and the terminal device respectively, in response to the initial calibration parameters and the calibration task start instruction sent by the terminal device, an excitation signal satisfying the initial calibration parameters is generated via the calibration device, the excitation signal is sent to the tester via the signal port of the calibration device, and a reference signal and a response signal returned by the tester are received; the device parameters of the calibration device are adaptively adjusted based on the detection data and the parameter adjustment algorithm set in the calibration device, and the target detection data is obtained according to the calibration device after the device parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; via the communication of the calibration device The port sends the target detection data to the terminal device, and the target detection data is processed by the verification software deployed on the terminal device to obtain the technical means of the target verification result. It realizes the verification task of receiving the user input through the terminal device equipped with the verification software, and provides a verification device capable of performing diversified verification tasks. Based on the parameter adjustment algorithm set in the verification device, on the one hand, it can ensure the signal frequency stability and signal amplitude accuracy of the excitation signal to avoid measurement errors, and on the other hand, it can dynamically optimize the performance of the verification device according to the detection data to comprehensively guarantee the accuracy and reliability of the verification process. Based on this, it can provide various types of verification tasks for various models of testers, thereby achieving the technical effect of improving the accuracy of the verification results and expanding the applicable scenarios of the verification device.

[0063] An embodiment of the present invention further provides a non-transitory machine-readable medium storing a computer program, wherein the computer program, when executed by a processor of a computer, is used to cause the computer to execute the method of the embodiment of the present invention.

[0064] The embodiment of the present invention further provides a computer program product, including a computer program, wherein the computer program is used to make the computer perform the method of the embodiment of the present invention when executed by a processor of the computer. The computer program product should be understood as a software product that mainly implements the above method of the present application through a computer program.

[0065] An embodiment of the present invention further provides an electronic device, comprising: at least one processor; and a memory in communication with the at least one processor. The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the electronic device executes the method of the embodiment of the present invention.

[0066] refer to Figure 4, a block diagram of an electronic device that can be used as a server or client of an embodiment of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device is intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0067] like Figure 4 As shown, the electronic device includes a computing unit 401, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 402 or a computer program loaded from a storage unit 408 to a random access memory (RAM) 403. In RAM 403, various programs and data required for the operation of the electronic device can also be stored. The computing unit 401, ROM 402, and RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0068] Multiple components in the electronic device are connected to the I / O interface 405, including: an input unit 406, an output unit 407, a storage unit 408, and a communication unit 409. The input unit 406 can be any type of device that can input information to the electronic device, and the input unit 406 can receive input digital or character information, and generate key signal input related to user settings and / or function control of the electronic device. The output unit 407 can be any type of device that can present information, and can include but is not limited to a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. The storage unit 408 can include but is not limited to a disk, an optical disk. The communication unit 409 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks, and can include but is not limited to a modem, a network card, an infrared communication device, and / or a wireless communication transceiver, such as a Bluetooth device, a WiFi device, a WiMax device, a cellular communication device, and / or the like.

[0069] The computing unit 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, a CPU, a graphics processing unit (GPU), various special artificial intelligence (AI) computing units, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 401 performs the various methods and processes described above. For example, in some embodiments, the method embodiments of the present invention may be implemented as a computer program, which is tangibly contained in a machine-readable medium, such as a storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via ROM 402 and / or communication unit 409. In some embodiments, the computing unit 401 may be configured to perform the above-described method in any other appropriate manner (e.g., by means of firmware).

[0070] The computer programs for implementing the methods of the embodiments of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer programs are executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer programs may be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0071] In the context of an embodiment of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable signal medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, or infrared systems, devices, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A calibration device for a transformer winding deformation tester, characterized in that: include: Verification equipment, signal port, input port, output port, communication port; among them, The verification device is connected to a terminal device equipped with verification software via the communication port, and the terminal device is used to receive initial verification parameters and verification task start instructions input by a user; The signal port is connected to the signal excitation port of the tester, and is used to transmit an excitation signal of known frequency and amplitude generated by a standard signal source; the input port is connected to the signal reference port of the tester, and is used to receive a reference signal returned by the tester; the output port is connected to the signal response port of the tester, and is used to receive a response signal generated by the tester according to the excitation signal; The verification device is provided with a parameter adjustment algorithm, and the verification device adaptively adjusts the device parameters based on the detection data and the parameter adjustment algorithm, and obtains target detection data according to the verification device after the device parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The verification device also sends the target detection data to the terminal device via the communication port, so that the target detection data is processed by the verification software deployed on the terminal device to obtain a target verification result.

2. The calibration device for transformer winding deformation tester according to claim 1, characterized in that: The calibration device includes multiple components, including a standard signal source, a signal amplifier or attenuator, an impedance matching network, a frequency selection filter, a data acquisition module and an intelligent algorithm processor; wherein, The standard signal source is used to generate an excitation signal of known frequency and amplitude, and transmit the excitation signal to the signal excitation port of the tester through the signal port; The signal amplifier / attenuator is used to adjust the signal amplitude to meet the measurement requirements indicated in various calibration tasks; The impedance matching network is used to optimize the impedance matching between signal ports to reduce signal transmission and distortion; The frequency selective filter is used to select a signal within a target frequency range; The data acquisition module is used to collect and record the reference signal and the response signal sent by the tester, and determine the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The intelligent algorithm processor is provided with a parameter adjustment algorithm for analyzing and comparing the detection data, and adaptively adjusting the component parameters of multiple components in the verification device according to the analysis and comparison results.

3. The calibration device for transformer winding deformation tester according to claim 2, characterized in that: The parameter adjustment algorithms set in the intelligent algorithm processor include: frequency stability control algorithm, amplitude accuracy control algorithm, gain stability control algorithm, impedance matching optimization algorithm, filter characteristic optimization algorithm; wherein, the intelligent algorithm processor is also used for: Adjusting the frequency output parameters of the standard signal source based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; Adjusting the amplitude adjustment parameter of the signal amplifier / attenuator based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; Adjusting the parameters of the impedance matching network based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; Adjusting the parameters of the frequency selective filter based on the filter characteristic optimization algorithm to reduce noise and other interfering signals; The gain control parameters of the data acquisition module are adjusted based on the gain stability control algorithm to ensure gain stability during long-term operation.

4. The calibration device for transformer winding deformation tester according to claim 1, characterized in that: The verification tasks include frequency verification tasks, amplitude ratio verification tasks, amplitude ratio repeatability verification tasks, port impedance verification tasks and frequency selection and filtering characteristic verification tasks; the terminal device is also used for: Receiving the target detection data sent by the verification device, and calculating the frequency error according to the frequency of the reference signal in the target detection data and the frequency of the excitation signal generated by the verification device to complete the frequency verification task; According to the amplitudes of the reference signal and the response signal in the target detection data, the signal amplitude ratio of the tester is calculated and compared with the preset amplitude ratio to determine the amplitude measurement accuracy of the tester to complete the amplitude ratio verification task; according to the amplitudes of the reference signal and the response signal measured multiple times, the relative standard deviation of the amplitude ratio measurement of the tester is calculated to complete the amplitude ratio repeatability verification task; the input and output impedance values ​​of each port of the tester are determined to complete the port impedance verification task; according to the signal amplitudes at different frequencies, the absolute error of the amplitude ratio is calculated to complete the frequency selection filtering characteristic verification task.

5. The calibration device for transformer winding deformation tester according to claim 1, characterized in that: The verification task start instruction provided by the terminal device includes: a full verification task start instruction or a single verification task start instruction.

6. The calibration device for transformer winding deformation tester according to claim 1, characterized in that: The terminal device is further used based on the verification software to: The target detection data is processed based on the verification software to obtain a target verification result, which is compared with the requirements indicated by the tester calibration specification, and the tester parameter adjustment information is determined according to the comparison result.

7. A calibration method for a transformer winding deformation tester, applicable to a calibration device for a transformer winding deformation tester according to any one of claims 1 to 6, characterized in that: include: When the verification device is connected to the corresponding ports of the tester and the terminal device respectively, in response to the initial verification parameters and the verification task start instruction sent by the terminal device, the verification device generates an excitation signal that meets the initial verification parameters, sends the excitation signal to the tester via the signal port of the verification device, and receives a reference signal and a response signal returned by the tester; Adaptively adjust the equipment parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device, and obtain target detection data according to the verification device after the equipment parameters are adjusted; wherein the detection data includes the signal frequency and signal amplitude corresponding to the reference signal and the response signal respectively; The target detection data is sent to the terminal device via the communication port of the verification device, so that the target detection data is processed by the verification software deployed on the terminal device to obtain a target verification result.

8. The calibration method of a transformer winding deformation tester according to claim 7, characterized in that: The step of adaptively adjusting the device parameters of the verification device based on the detection data and the parameter adjustment algorithm set in the verification device also includes: Adjusting the frequency output parameters of the standard signal source in the calibration device based on the frequency stability control algorithm to ensure the frequency stability of the generated excitation signal; Adjusting the amplitude adjustment parameters of the signal amplifier / attenuator in the verification device based on the amplitude accuracy control algorithm to ensure the amplitude accuracy of the generated excitation signal; Adjusting the parameters of the impedance matching network in the verification device based on the impedance matching optimization algorithm to optimize the impedance characteristics of each port; Adjusting the parameters of the frequency-selective filter in the verification device based on the filter characteristic optimization algorithm to reduce noise and other interference signals; The gain control parameters of the data acquisition module in the verification device are adjusted based on the gain stability control algorithm to ensure gain stability during long-term operation.

9. An electronic device, comprising: A processor, and a memory for storing a program, characterized in that the program includes instructions, and when the instructions are executed by the processor, the processor executes a calibration method for a transformer winding deformation tester according to any one of claims 7-8.

10. A non-transitory machine-readable medium storing computer instructions, characterized in that: The computer instructions are used to enable the computer to execute a calibration method for a transformer winding deformation tester according to any one of claims 7-8.

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