Water plant mutual inductor test platform system based on intelligent measurement and control technology and measurement and control method

Abstract

The invention discloses a water plant mutual inductor test platform system based on an intelligent measurement and control technology and a measurement and control method, and belongs to the field of electric power testing. The invention discloses a water plant mutual inductor test platform system based on an intelligent measurement and control technology and a measurement and control method. The water plant mutual inductor test platform system comprises a data measurement system, a data acquisition system and a control subsystem. The problems that an existing testing method has high cost requirements and tedious steps are solved, multiple testing functions are integrated through the virtual instrument technology and the soft measurement technology, the excitation characteristic testing method and the mutual inductor grading measurement method, the detection efficiency can be improved, the detection cost is reduced, and meanwhile the testing efficiency is improved. And a plurality of functions of data acquisition, data analysis, data judgment, data storage, data curve display, measurement historical record query and the like are also provided, so that the automation and intelligence degrees of the current transformer test platform are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power testing, and in particular to a water plant mutual inductor testing platform system and a measuring and controlling method based on intelligent measuring and controlling technology. Background Art

[0002] In the testing process of water plant power transformer equipment, the traditional testing method not only has relatively high cost requirements, but also requires very complicated procedures during the measurement process, which brings great inconvenience to the transformer testing process. With the advancement of human production activities, water plant power testing has become less and less tolerant of cumbersome traditional testing methods, and the intelligent measurement and control technology born with computer electronic information technology has provided a new path for transformer testing.

[0003] The traditional testing method not only has relatively high cost requirements, but also requires very complicated procedures during the measurement process, which greatly inconveniences the transformer testing process; therefore, it does not meet the existing needs. In this regard, we propose a water plant transformer testing platform system and measurement and control method based on intelligent measurement and control technology. Summary of the invention

[0004] The purpose of the present invention is to provide a water plant transformer test platform system and a measurement and control method based on intelligent measurement and control technology. By using virtual instrument technology and soft measurement technology, and through the test method of excitation characteristics and the method of transformer grading measurement, multiple test functions are integrated into one, which not only improves the efficiency of detection, but also greatly reduces the cost of detection. At the same time, it also provides multiple functions such as data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query, which can better support and display the results of current transformer platform testing and solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a water plant transformer test platform system based on intelligent measurement and control technology, comprising:

[0006] Data measurement systems for:

[0007] Using virtual instrument technology and soft measurement technology, multiple test functions are integrated through the test method of excitation characteristics and the method of transformer grading measurement. The test functions include the test of the excitation characteristics of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer;

[0008] Data acquisition systems for:

[0009] The data measured by the virtual instrument technology and the soft measurement technology are collected and output through the data acquisition card, and the collected measurement data are output to the central processing unit through the analog channel of the data acquisition card;

[0010] Among them, the data acquisition system provides multiple functions, including data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query;

[0011] Control subsystem for:

[0012] The measurement data is acquired from the central processing unit, and based on the acquired measurement data, the digital quantity data is read and output through the digital quantity channel of the data acquisition card, and the digital quantity data output by the digital quantity channel of the data acquisition card is isolated and amplified.

[0013] Furthermore, the test method of the excitation characteristics and the transformer grading measurement method integrate multiple test functions, specifically:

[0014] Test method of excitation characteristics: After charging and discharging the winding of the current transformer, reverse the power supply to collect data, so as to calculate the secondary winding internal resistance, residual flux value and saturation flux value;

[0015] Transformer grading measurement method: used to grade the time constant of the current transformer during the test of the excitation characteristics of the current transformer, and select different gears for measurement based on the grading results.

[0016] Furthermore, the data measurement system is specifically:

[0017] Test the excitation characteristics of the current transformer: divide the time constant of the current transformer into different levels and test it at different levels to measure the excitation characteristics of the secondary winding of the current transformer;

[0018] Conduct residual magnetism test on the small coil of the power transformer: Use low-frequency AC method to test, collect the voltage waveform of the secondary winding of the power transformer, determine the saturation flux and residual flux and segmentation, and test the residual magnetism coefficient according to the results;

[0019] Test the harmonics of the power transformer: measure the primary voltage, secondary voltage and secondary current signals of the current transformer, short-circuit the secondary voltage through a short-circuit voltage signal, detect the distortion of the secondary voltage waveform during the recovery process after the short circuit, and obtain the harmonic number of the power transformer.

[0020] Furthermore, the data measurement system includes a power supply module and a circuit selection module, and the corresponding power supply module and circuit selection module are selected in the excitation characteristic test, small coil test and harmonic test of the power transformer to complete the corresponding functional test of the power transformer.

[0021] Furthermore, when the data acquisition card is performing data acquisition, the data acquisition card is configured, including the sampling rate and the data format, wherein:

[0022] Sampling rate: By setting the sampling rate, determine the data to be collected every second;

[0023] Data format: The data format of the data acquisition card includes analog and digital. The analog quantity is the data format of the analog channel of the data acquisition card, and the digital quantity is the data format of the digital output channel of the data acquisition card.

[0024] Furthermore, the data acquisition system comprises:

[0025] Data acquisition module for:

[0026] Collect the measurement data of the current transformer from each test link of the data measurement system;

[0027] Data processing module for:

[0028] Preprocess the measurement data collected by the data acquisition module, including cleaning, filtering and conversion;

[0029] Data analysis module for:

[0030] Analyze the preprocessed measurement data;

[0031] Analyze the excitation characteristics of the current transformer by testing the excitation characteristics of the current transformer, including the excitation curve of the current transformer, the excitation field intensity and the main core material parameters;

[0032] Through the residual magnetism test data of the small coil of the power transformer, the performance of the power transformer in the small coil state is evaluated;

[0033] Evaluate the anti-disturbance capability of power transformers through harmonic test data of power transformers;

[0034] Data judgment module, used for:

[0035] Based on the analysis results of the data analysis module, the problems of the power transformer are identified and corresponding improvements are made according to the existing problems;

[0036] Data graphics module for:

[0037] For the pre-processed measurement data, the data visualization tool is used to generate graphical data for display, including bar charts, line charts, heat maps and curve charts;

[0038] Database management module for:

[0039] Create a database to store all measurement data and provide a variety of functions to manage the stored measurement data.

[0040] Furthermore, the data processing module is specifically:

[0041] Cleaning: used to remove invalid data, abnormal data and duplicate data in the measurement data;

[0042] Filtering: used to remove noise and interference information from the measurement data through filters;

[0043] Conversion: used to convert the data format of the measurement data into a unified format.

[0044] Furthermore, the database management module provides multiple functions to manage the stored measurement data, including:

[0045] Data backup: used to regularly back up the measurement data stored in the database;

[0046] Data query: used to provide historical record query function, query historical data by keyword search or condition screening;

[0047] Data sharing: used to share part of the database data with users for secondary development and utilization, and also provides export, download and print functions.

[0048] The measuring and controlling method of the water plant transformer test platform based on the intelligent measuring and controlling technology is applied to the water plant transformer test platform system based on the intelligent measuring and controlling technology, and comprises the following steps:

[0049] The data measurement system uses virtual instrument technology and soft measurement technology, and integrates multiple test functions through a new excitation characteristic test method and a transformer grading measurement method;

[0050] Realize the excitation characteristic test of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer;

[0051] The data measured by virtual instrument technology and soft measurement technology are collected and output through data acquisition card;

[0052] When collecting data, configure the sampling rate and data format of the data acquisition card;

[0053] At the same time, the data acquisition system provides data collection, data analysis, data judgment, data storage, data curve display and measurement history query functions.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] The present invention integrates multiple test functions by using virtual instrument technology and soft measurement technology, and through a test method for excitation characteristics and a method for transformer grading measurement, it can realize the test of the excitation characteristics of the current transformer, the residual magnetism test of the small coil of the power transformer, and the harmonic test of the power transformer, thereby improving the efficiency of detection and greatly reducing the cost of detection. At the same time, it also provides multiple functions such as data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query. Based on the provided functions, the test process is more convenient and efficient, and the test results of the current transformer platform can be better supported and displayed, thereby improving the automation and intelligence of the current transformer test platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a system structure diagram of the water plant mutual inductor testing platform based on intelligent measurement and control technology of the present invention. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0058] In order to solve the technical problems that the existing traditional test methods not only have relatively high cost requirements, but also require very complicated procedures during the measurement process, which brings great inconvenience to the process of transformer testing, please refer to Figure 1 , this embodiment provides the following technical solutions:

[0059] The water plant transformer test platform system based on intelligent measurement and control technology includes:

[0060] Data measurement systems for:

[0061] Using virtual instrument technology and soft measurement technology, multiple test functions are integrated through the test method of excitation characteristics and the method of transformer grading measurement. The test functions include the test of the excitation characteristics of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer;

[0062] Data acquisition systems for:

[0063] The data measured by the virtual instrument technology and the soft measurement technology are collected and output through the data acquisition card, and the collected measurement data are output to the central processing unit through the data acquisition card analog channel. It should be noted that the central processing unit can be connected to the peripheral general-purpose equipment (such as printer, display, keyboard and mouse) through the serial communication interface, and the test data can be sent to the peripheral general-purpose equipment through serial communication;

[0064] Among them, the data acquisition system provides multiple functions, including data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query;

[0065] Control subsystem for:

[0066] The measurement data is acquired from the central processing unit, and based on the acquired measurement data, the digital quantity data is read and output through the digital quantity channel of the data acquisition card, and the digital quantity data output by the digital quantity channel of the data acquisition card is isolated and amplified.

[0067] Data measurement system, specifically:

[0068] Test the excitation characteristics of the current transformer: divide the time constant of the current transformer into different levels and test it at different levels to measure the excitation characteristics of the secondary winding of the current transformer;

[0069] Conduct residual magnetism test on the small coil of the power transformer: Use low-frequency AC method to test, collect the voltage waveform of the secondary winding of the power transformer, determine the saturation flux and residual flux and segmentation, and test the residual magnetism coefficient according to the results;

[0070] Test the harmonics of the power transformer: measure the primary voltage, secondary voltage and secondary current signals of the current transformer, short-circuit the secondary voltage through a short-circuit voltage signal, detect the distortion of the secondary voltage waveform during the recovery process after the short circuit, and obtain the harmonic number of the power transformer.

[0071] The technical effect of the above content is: in the process of power detection, virtual instrument technology and soft measurement technology can realize parameters that are difficult to detect with conventional instruments, and can estimate parameters that cannot be measured. By combining virtual instruments with soft measurement technology, relatively accurate values ​​can be measured. Using virtual instrument technology and soft measurement technology, through the test method of excitation characteristics and the method of transformer grading measurement, multiple test functions can be integrated into one, thereby realizing the excitation characteristics test, small coil test and harmonic test of power transformers. This technology not only improves the efficiency of detection, but also greatly reduces the cost of detection. At the same time, it also provides data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query and other functions, which can make the test process more convenient and efficient, thereby improving the automation and intelligence of the current transformer test platform.

[0072] Through the test method of excitation characteristics and the method of transformer grading measurement, multiple test functions are integrated into one, specifically:

[0073] Test method of excitation characteristics: After charging and discharging the winding of the current transformer, reverse the power supply to collect data, so as to calculate the secondary winding internal resistance, residual flux value and saturation flux value;

[0074] The test method of excitation characteristics, the specific steps are:

[0075] The winding of the current transformer is charged and discharged to make the magnetic flux disappear. In this process, the charging time and current size need to be accurately controlled to ensure the speed and effect of discharge.

[0076] Reverse the power supply and start data collection. The key to this step is to ensure that the collected data is in a natural cooling state of the current transformer to avoid temperature changes caused by human operation.

[0077] According to the collected data, the secondary winding internal resistance, residual flux value and saturation flux value are calculated. In this step, various mathematical models can be used for fitting and calculation to obtain the final measurement results.

[0078] Transformer grading measurement method: used to grade the time constant of the current transformer during the test of the excitation characteristics of the current transformer, and select different gears for measurement based on the grading results;

[0079] The method of measuring transformer by grades includes the following specific steps:

[0080] Determine a suitable test range based on the rated capacity and rated frequency of the current transformer;

[0081] Select several typical test time constants, such as 0.5s, 1s, 2s, etc., and perform a complete test at each time constant;

[0082] Analyze the data of each test, find out the average number of error-free times corresponding to each time constant, and record it;

[0083] If it is found that the number of error-free times corresponding to a certain time constant is small, it means that the test result under this time constant may have a large error, and this time constant can be divided into a new gear;

[0084] Repeat steps 2-4 above until all time constants are divided into appropriate gears.

[0085] The technical effect of the above content is: the excitation characteristic test method not only solves the problem of residual flux influence in the traditional test process, but also avoids the complicated manual demagnetization operation, saves time and human resources, and realizes the integration of measurement and demagnetization by alternating positive and reverse excitation. It can effectively improve the accuracy and efficiency of the test. The method of transformer grading measurement can improve the measurement accuracy while keeping the test time unchanged, which is very effective in improving the test accuracy of the excitation characteristics of the current transformer.

[0086] The data measurement system includes a power supply module and a circuit selection module. The corresponding power supply module and circuit selection module are selected during the excitation characteristic test, small coil test and harmonic test of the power transformer to complete the corresponding functional test of the power transformer.

[0087] The technical effect of the above content is: in order to realize the functions of excitation characteristic test, small coil test and harmonic test of power transformer, it is necessary to cooperate with the corresponding power supply module and circuit selection module, and select the corresponding module in different measurement processes to realize the corresponding functional test. For example: the excitation characteristic test usually requires a higher current output, so a power supply module with a larger output current range can be selected. At the same time, in order to ensure the accuracy of the test, the power supply module should have good ripple control capability and stability; the small coil test requires a lower current output and has higher requirements on the current response speed. Therefore, a power supply module with a smaller output current but a faster response speed can be selected. In addition, the circuit selection module should be able to accurately control the size and waveform of the output current; the harmonic test requires a stable DC voltage source, so a power supply module with a stable output voltage can be selected. In addition, since the harmonic test often needs to be carried out within a wider frequency range, the power supply module should have a better frequency response capability.

[0088] In summary, when selecting power modules and circuit selection modules, the specific needs of the test project should be fully considered to ensure that each module can perform at its best and achieve the expected functional test. At the same time, attention should also be paid to the compatibility and synergy between the modules to ensure the efficient and stable operation of the entire test system.

[0089] When the data acquisition card is collecting data, the data acquisition card is configured, including the sampling rate and data format, where:

[0090] Sampling rate: By setting the sampling rate, determine the data to be collected every second;

[0091] Data format: The data format of the data acquisition card includes analog and digital. The analog quantity is the data format of the analog channel of the data acquisition card, and the digital quantity is the data format of the digital output channel of the data acquisition card.

[0092] The technical effect of the above content is: the sampling rate refers to the number of times the data acquisition card samples per second, which determines the precision of data collection. Generally speaking, the higher the sampling rate, the finer the collected data, but it will also increase the burden of data processing. Therefore, it is necessary to reasonably set the sampling rate according to actual needs. The data format determines the form in which the data collected by the data acquisition card is stored and transmitted. Analog data is collected in the form of continuous analog signals, while digital data is collected in the form of discrete digital signals. Therefore, the data format also needs to be selected and set according to the actual situation, and the data acquisition card should be configured during data collection to achieve the functions of data collection and digital output.

[0093] Data acquisition system, including:

[0094] Data acquisition module for:

[0095] Collect the measurement data of the current transformer from each test link of the data measurement system;

[0096] Data processing module for:

[0097] Preprocess the measurement data collected by the data acquisition module, including cleaning, filtering and conversion;

[0098] Data analysis module for:

[0099] Analyze the preprocessed measurement data;

[0100] Analyze the excitation characteristics of the current transformer by testing the excitation characteristics of the current transformer, including the excitation curve of the current transformer, the excitation field intensity and the main core material parameters;

[0101] Through the residual magnetism test data of the small coil of the power transformer, the performance of the power transformer in the small coil state is evaluated;

[0102] Evaluate the anti-disturbance capability of power transformers through harmonic test data of power transformers;

[0103] Data judgment module, used for:

[0104] Based on the analysis results of the data analysis module, the problems of the power transformer are identified and corresponding improvements are made according to the existing problems;

[0105] Data graphics module for:

[0106] For the pre-processed measurement data, the data visualization tool is used to generate graphical data for display, including bar charts, line charts, heat maps and curve charts, so that users can intuitively understand and analyze the data;

[0107] Database management module for:

[0108] Create a database to store all measurement data and provide a variety of functions to manage the stored measurement data.

[0109] The technical effect of the above content is: the data acquisition system is composed of a data acquisition module, a data processing module, a data analysis module, a data judgment module, a data graphics module and a database management module, which can perform multiple functions such as data acquisition, data analysis, data judgment, data storage, data curve display and measurement history record query, thereby improving the automation and intelligence of the current transformer test platform, making the test process more convenient and efficient, and can better support and display the results of the current transformer platform test.

[0110] It should be noted that in addition to the above-mentioned modules, the data acquisition system also includes a sensing and transmission module and an isolation module. The sensing and transmission module is used to directly convert various physical quantities into electrical signals for processing by the data acquisition system. The isolation module is used to achieve electrical and physical isolation between different areas in the data acquisition system to ensure safety and stability. Through the above modules, the data acquisition system can obtain data of various physical quantities more comprehensively and accurately, and can effectively process, analyze and display them, so as to better serve related fields and industries.

[0111] Data processing module, specifically:

[0112] Cleaning: used to remove invalid data, abnormal data and duplicate data in the measurement data;

[0113] Filtering: used to remove noise and interference information from the measurement data through filters;

[0114] Conversion: used to convert the data format of the measurement data into a unified format.

[0115] The technical effects of the above content are: invalid data, abnormal data and duplicate data in the measurement data can be removed through cleaning, so as to ensure the quality and consistency of the measurement data; noise and interference information in the measurement data can be removed through filtering, so as to improve the credibility and accuracy of the data; and the data format of the measurement data can be converted into a unified format through conversion, so as to improve the comparability and reusability of the data.

[0116] The database management module provides a variety of functions to manage the stored measurement data, including:

[0117] Data backup: used to regularly back up the measurement data stored in the database;

[0118] Data query: used to provide historical record query function, query historical data by keyword search or condition screening;

[0119] Data sharing: used to share part of the database data with users for secondary development and utilization, and also provides export, download and print functions.

[0120] The technical effect of the above content is: in order to ensure the security and reliability of the measurement data, the database management module needs to regularly back up the measurement data stored in the database so that it can quickly restore to the previous measurement data when a problem occurs. The database management module also provides a historical data query function so that users can find the required data through various keyword searches or conditional screening methods. The database management module also allows users to share part of the data with users for secondary development and utilization, or export, download and print part of the data for further processing and analysis by users.

[0121] The measuring and controlling method of the water plant transformer test platform based on the intelligent measuring and controlling technology is applied to the water plant transformer test platform system based on the intelligent measuring and controlling technology, and comprises the following steps:

[0122] The data measurement system uses virtual instrument technology and soft measurement technology, and integrates multiple test functions through a new excitation characteristic test method and a transformer grading measurement method;

[0123] Realize the excitation characteristic test of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer;

[0124] The data measured by virtual instrument technology and soft measurement technology are collected and output through data acquisition card;

[0125] When collecting data, configure the sampling rate and data format of the data acquisition card;

[0126] At the same time, the data acquisition system provides data collection, data analysis, data judgment, data storage, data curve display and measurement history query functions.

[0127] Working principle: By using virtual instrument technology and soft measurement technology, and integrating multiple test functions through the test method of excitation characteristics and the method of transformer grading measurement, it is possible to realize the excitation characteristic test, small coil test and harmonic test of power transformer, thereby improving the efficiency of detection and greatly reducing the cost of detection. At the same time, it also provides multiple functions such as data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query, so as to improve the automation and intelligence of the current transformer test platform.

[0128] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0129] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. The water plant transformer test platform system based on intelligent measurement and control technology is characterized by: include: Data measurement systems for: Using virtual instrument technology and soft measurement technology, multiple test functions are integrated through the test method of excitation characteristics and the method of transformer grading measurement. The test functions include the test of the excitation characteristics of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer; Data acquisition systems for: The data measured by the virtual instrument technology and the soft measurement technology are collected and output through the data acquisition card, and the collected measurement data are output to the central processing unit through the analog channel of the data acquisition card; Among them, the data acquisition system provides multiple functions, including data acquisition, data analysis, data judgment, data storage, data curve display and measurement history query; Control subsystem for: The measurement data is acquired from the central processing unit, and based on the acquired measurement data, the digital quantity data is read and output through the digital quantity channel of the data acquisition card, and the digital quantity data output by the digital quantity channel of the data acquisition card is isolated and amplified.

2. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 1 is characterized by: Through the test method of excitation characteristics and the method of transformer grading measurement, multiple test functions are integrated into one, specifically: Test method of excitation characteristics: After charging and discharging the winding of the current transformer, reverse the power supply to collect data, so as to calculate the secondary winding internal resistance, residual flux value and saturation flux value; Transformer grading measurement method: used to grade the time constant of the current transformer during the test of the excitation characteristics of the current transformer, and select different gears for measurement based on the grading results.

3. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 1 is characterized by: The data measurement system is as follows: Test the excitation characteristics of the current transformer: divide the time constant of the current transformer into different levels and test it at different levels to measure the excitation characteristics of the secondary winding of the current transformer; Conduct residual magnetism test on the small coil of the power transformer: Use low-frequency AC method to test, collect the voltage waveform of the secondary winding of the power transformer, determine the saturation flux and residual flux and segmentation, and test the residual magnetism coefficient according to the results; Test the harmonics of the power transformer: measure the primary voltage, secondary voltage and secondary current signals of the current transformer, short-circuit the secondary voltage through a short-circuit voltage signal, detect the distortion of the secondary voltage waveform during the recovery process after the short circuit, and obtain the harmonic number of the power transformer.

4. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 1 is characterized in that: The data measurement system includes a power supply module and a circuit selection module. The corresponding power supply module and circuit selection module are selected during the excitation characteristic test, small coil test and harmonic test of the power transformer to complete the corresponding functional test of the power transformer.

5. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 1 is characterized by: When the data acquisition card is collecting data, the data acquisition card is configured, including the sampling rate and data format, where: Sampling rate: By setting the sampling rate, determine the data to be collected every second; Data format: The data format of the data acquisition card includes analog and digital. The analog quantity is the data format of the analog channel of the data acquisition card, and the digital quantity is the data format of the digital output channel of the data acquisition card.

6. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 1 is characterized by: Data acquisition system, including: Data acquisition module for: Collect the measurement data of the current transformer from each test link of the data measurement system; Data processing module for: Preprocess the measurement data collected by the data acquisition module, including cleaning, filtering and conversion; Data analysis module for: Analyze the preprocessed measurement data; Analyze the excitation characteristics of the current transformer by testing the excitation characteristics of the current transformer, including the excitation curve of the current transformer, the excitation field intensity and the main core material parameters; Through the residual magnetism test data of the small coil of the power transformer, the performance of the power transformer in the small coil state is evaluated; Evaluate the anti-disturbance capability of power transformers through harmonic test data of power transformers; Data judgment module, used for: Based on the analysis results of the data analysis module, the problems of the power transformer are identified and corresponding improvements are made according to the existing problems; Data graphics module for: For the pre-processed measurement data, the data visualization tool is used to generate graphical data for display, including bar charts, line charts, heat maps and curve charts; Database management module for: Create a database to store all measurement data and provide a variety of functions to manage the stored measurement data.

7. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 6 is characterized by: Data processing module, specifically: Cleaning: used to remove invalid data, abnormal data and duplicate data in the measurement data; Filtering: used to remove noise and interference information from the measurement data through filters; Conversion: used to convert the data format of the measurement data into a unified format.

8. The water plant transformer test platform system based on intelligent measurement and control technology according to claim 6 is characterized by: The database management module provides a variety of functions to manage the stored measurement data, including: Data backup: used to regularly back up the measurement data stored in the database; Data query: used to provide historical record query function, query historical data by keyword search or condition screening; Data sharing: used to share part of the database data with users for secondary development and utilization, and also provides export, download and print functions.

9. A measurement and control method for a water plant transformer test platform based on intelligent measurement and control technology, applied to a water plant transformer test platform system based on intelligent measurement and control technology as described in any one of claims 1 to 8, characterized in that: The following steps are involved: The data measurement system uses virtual instrument technology and soft measurement technology, and integrates multiple test functions through a new excitation characteristic test method and a transformer grading measurement method; Realize the excitation characteristic test of the current transformer, the residual magnetism test of the small coil of the power transformer and the harmonic test of the power transformer; The data measured by virtual instrument technology and soft measurement technology are collected and output through data acquisition card; When collecting data, configure the sampling rate and data format of the data acquisition card; At the same time, the data acquisition system provides data collection, data analysis, data judgment, data storage, data curve display and measurement history query functions.

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