Wide-range distributed transformer assembly line test system based on smart laboratory

Abstract

The present invention belongs to the technical field of transformer assembly line testing, and discloses a distributed transformer assembly line testing system based on a wide range of a smart laboratory, including a transformer detection equipment setting module, a transformer specification information identification module, a transformer quality test implementation module, a transformer quality abnormality identification module, a designated transformer classification output module, an assembly line test quality analysis module, an assembly line test environment detection module, and an assembly line abnormality identification module. The present invention identifies the transformer specification information before conducting a transformer test, and then sets the test parameters in a targeted manner to perform the test operation, thereby improving the test efficiency, ensuring the accuracy and reliability of the test, and enhancing the test flexibility and compatibility. The present invention performs the test operation through the assembly line equipment when conducting the transformer test, and then classifies and outputs different test results, thereby improving the test efficiency and strengthening the systematicity and standardization of production management.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer assembly line testing, and relates to a wide-range distributed transformer assembly line testing system based on a smart laboratory. Background Art

[0002] With the rapid development of science and productivity, market competition in all walks of life is becoming increasingly fierce. With the continuous expansion of the scale of power grids and the rapid development of smart grids, the number of various electric energy metering equipment, especially power transformers, has doubled every year. Faced with the verification and management of a large number of transformers, if traditional paper records, manual statistics, and manual tests are still used, not only will the workload be large and the accuracy be low, but it will also be impossible to quickly query and count relevant information. Therefore, the research on the assembly line test of wide-range distributed transformers based on smart laboratories is of great significance.

[0003] The existing transformer testing scheme tests known transformer types. This testing scheme has poor versatility and cannot effectively test transformers of various specifications, which reduces the accuracy of the test and is prone to parameter deviation due to range problems. Manual adjustment of test equipment and parameters is time-consuming and labor-intensive, which leads to low efficiency. It is difficult to meet the needs of product upgrades and cannot test new specifications in a timely manner. It is not conducive to quality control and will miss quality problems under specific specifications and ranges, threatening the safety and reliability of application scenarios.

[0004] The existing transformer testing scheme adopts fixed-position testing. This testing scheme has low testing efficiency, long batch testing cycle, and is difficult to quickly adapt to transformers of different specifications. It is not conducive to quality control, and is prone to data fluctuations due to operational differences and inconvenient to trace the source of the problem. At the same time, the degree of automation is low, and it is difficult to achieve automated functions such as automatic loading and unloading, and classification by relying on manual operation. Summary of the invention

[0005] In view of this, in order to solve the problems raised in the above background technology, a wide-range distributed transformer assembly line testing system based on a smart laboratory is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a wide-range distributed transformer assembly line test system based on a smart laboratory, including: a transformer detection equipment setting module, used to set up the transformer test assembly line equipment, the equipment includes a conveying device, a scanning device, a detection device and a classification output device.

[0007] The transformer specification information identification module is used to transport each designated transformer using a transport device and collect the transformer specification information using a scanning device, wherein the specification information includes a rated current ratio, a primary side rated current and a secondary side rated current.

[0008] The transformer quality test implementation module is used to use the detection device to perform quality detection on each designated transformer, and the quality detection specifically includes a transformation ratio test and a phase difference test.

[0009] The transformer quality abnormality identification module is used to determine whether each designated transformer has a quality abnormality based on the results of the corresponding quality detection of each designated transformer.

[0010] The designated transformer classification output module is used to perform classification output on each designated transformer using the classification output device.

[0011] The assembly line test quality analysis module is used to perform test quality monitoring on a designated transformer test assembly line, wherein the test quality monitoring specifically includes mechanical transmission quality monitoring and electrical connection quality monitoring.

[0012] The pipeline test environment detection module is used to obtain the environmental information of the specified transformer test pipeline, the environmental information specifically including temperature and magnetic field strength, and analyze the environmental factor evaluation of the specified transformer test pipeline.

[0013] The assembly line abnormality identification module is used to determine whether there is an assembly line test abnormality in the specified transformer test assembly line. If so, it identifies the specific abnormality direction and issues an early warning.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention first identifies the transformer specification information before testing the transformer, and then sets the test parameters in a targeted manner to perform the test operation. This analysis method can accurately adapt to the test requirements of transformers of different specifications, improve test efficiency, ensure test accuracy and reliability, and reduce equipment loss and energy consumption, while enhancing test flexibility and compatibility.

[0015] (2) When testing the transformer, the present invention performs test operations through the assembly line equipment, and then classifies and outputs different test results. This analysis method greatly improves the test efficiency, so that the transformer can smoothly and quickly complete the detection of each link on the automated assembly line, saving tedious manual connection time, and is even more efficient during batch testing; the precise assembly line program eliminates human operation errors, making the test results objective and accurate. On this basis, different results are classified and output, and potential problems in the production link are accurately identified, which is conducive to timely optimization of the process and quality control; it can also reasonably allocate resources, so that qualified products are quickly transferred to subsequent processes, and unqualified products are promptly reworked or scrapped, eliminating resource waste and comprehensively strengthening the systematicness and standardization of production management.

[0016] (3) The present invention analyzes the quality of the transformer assembly line test while conducting the transformer assembly line test, specifically conducting mechanical transmission quality monitoring and electrical connection quality monitoring. This analysis method can accurately control the accuracy of the test data, significantly improve the test efficiency, avoid frequent shutdowns of the assembly line, and facilitate in-depth optimization of the production process and equipment operation and maintenance, and accurately improve weak links based on monitoring data; it can also effectively enhance the stability of product quality, allowing the transformer to be tested under high-quality conditions, in line with the requirements of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention.

[0019] Figure 2 A schematic diagram of an embodiment of a conveying, grabbing, notifying and classifying output device provided by the present invention.

[0020] Figure 3 A judgment flow chart corresponding to a pipeline test anomaly pointing identification embodiment provided by the present invention.

[0021] Figure numerals: 1 - conveyor belt, 2 - detection area 1, 3 - detection area 2, 4 - controllable rotating component, 5 - output port 1, 6 - output port 2. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1As shown, the present invention provides a wide-range distributed transformer assembly line test system based on a smart laboratory, including a transformer detection equipment setting module, a transformer specification information identification module, a transformer quality test implementation module, a transformer quality abnormality identification module, a designated transformer classification output module, an assembly line test quality analysis module, an assembly line test environment detection module and an assembly line abnormality identification module, wherein the transformer detection equipment setting module is respectively connected to the transformer specification information identification module and the assembly line test quality analysis module, the transformer specification information identification module is connected to the transformer quality test implementation module, the transformer quality test implementation module is connected to the transformer quality abnormality identification module, the transformer quality abnormality identification module is connected to the designated transformer classification output module, the assembly line test quality analysis module is connected to the assembly line test environment detection module, and the assembly line test environment detection module is connected to the assembly line abnormality identification module.

[0024] The transformer detection equipment setting module is used to set up transformer test line equipment, and the equipment includes a conveying device, a scanning device, a detection device and a classification output device.

[0025] Please note that Figure 2 As shown, the detection device is composed of multiple detection areas and detection equipment. Different detection areas perform different detections, and each detection area corresponds to a different detection equipment.

[0026] If additional explanation is needed, the present invention involves a transformation ratio test and a phase difference test, and therefore includes a detection area 1 and a detection area 2. The detection area 1 performs a transformation ratio test, and the detection area 2 performs a phase difference test.

[0027] It should be noted that the classification output device is composed of a controllable rotating component, an output port 1 and an output port 2, and different output ports output different designated mutual inductors.

[0028] It should be supplemented that, after determining whether each designated mutual inductor has quality abnormalities, each designated mutual inductor determined to have quality abnormalities is output through output port one, and each designated mutual inductor determined not to have quality abnormalities is output through output port two.

[0029] The transformer specification information identification module is used to transport each designated transformer using a transport device and collect the transformer specification information using a scanning device, wherein the specification information includes a rated current ratio, a primary side rated current and a secondary side rated current.

[0030] It needs to be explained that the rated current ratio refers to the ratio of the primary rated current of the transformer to the secondary rated current. In power systems, the rated current ratio is usually used to evaluate the applicability and power loss of equipment and circuits. For high-load and high-power equipment, the rated current ratio requires more stringent control and selection to ensure the long-term stable operation and safety of the equipment.

[0031] It needs to be explained that the primary side rated current refers to the maximum operating current allowed to pass through the primary winding of the current transformer. This value is determined based on the design, manufacturing and use conditions of the current transformer. It ensures that the current transformer can work normally when the primary side current reaches the rated value and will not be damaged due to overload.

[0032] It should be explained that the secondary rated current refers to the standard current value allowed to pass through the secondary winding of the current transformer. In the power system, the secondary rated current of the current transformer is usually 5A or 1A. This means that when the primary current reaches the rated value, the current on the secondary side will be equal to the secondary rated current.

[0033] It should be noted that the present invention first identifies the transformer specification information before conducting the transformer test, and then sets the test parameters in a targeted manner to perform the test operation. This analysis method can accurately adapt to the test requirements of transformers of different specifications, improve test efficiency, ensure the accuracy and reliability of the test, and reduce equipment loss and energy consumption, while enhancing test flexibility and compatibility.

[0034] The transformer quality test implementation module is used to perform quality detection on each designated transformer using a detection device, and the quality detection specifically includes a transformation ratio test and a phase difference test.

[0035] It should be noted that the reasons for testing the ratio of each designated transformer are: 1. To ensure fair and accurate measurement: The accuracy of the transformer ratio is directly related to the measurement of electric energy. Errors will cause the measured power to be inconsistent with the actual power consumption, affecting the interests of both the power supplier and the power user. Accurate ratio is the measurement cornerstone for fair transactions. 2. To ensure the reliable operation of relay protection: The relay protection device relies on the signal obtained by the transformer to determine the fault. The accurate ratio is the key to its accurate perception of fault current and voltage. Once there is an error, it is very easy to cause false operation or refusal to operate, endangering the safety of the power system.

[0036] It should be explained that the reasons for testing the phase difference of each designated mutual inductor are as follows: 1. Supporting accurate decision-making of relay protection: Many relay protection mechanisms rely on phase difference to determine the direction of faults. Incorrect phase difference will cause misjudgment of protection devices, such as directional overcurrent protection misjudging the direction of faults, expanding the scope of power outages, and disrupting the normal operation of the power system. 2. Assisting system stability and harmonic control: The voltage phase difference must be strictly controlled when the generator is connected to the grid to ensure smooth access; when detecting grid harmonics, analyzing the voltage and current phase differences at different frequencies is conducive to tracing the source of harmonics, formulating filtering strategies, maintaining power quality, and stabilizing the operation of the power system.

[0037] In a preferred embodiment of the present invention, the transformation ratio test requires constructing a transformation ratio test evaluation index for each specified transformer, and the specific method is as follows: extracting the primary side rated current, secondary side rated current and rated current ratio of each specified transformer obtained by using a scanning device.

[0038] The primary side rated current of each designated transformer is multiplied by the preset test current selection ratio to obtain the test current corresponding to each designated transformer.

[0039] Exemplarily, the proportion of each test current selection may be 50%, 75%, or 100%.

[0040] It should be explained that the reason for conducting a transformation ratio test on the transformer based on different test currents is: on the one hand, it can comprehensively evaluate the performance of the transformer under different working conditions, simulate the current fluctuation in actual operation, and verify whether it can accurately transform at various load levels; on the other hand, it can ensure that the transformer maintains a stable transformation ratio in actual applications, thereby detecting the core saturation characteristics, locking the saturation critical current, and preventing abnormal transformation ratio and sudden increase in error due to core saturation.

[0041] Each test current is applied to the primary winding of each designated transformer, and then the secondary side response current corresponding to each test current of each designated transformer is collected at the secondary winding of each designated transformer.

[0042] The ratio of each test current of each designated mutual inductor to each corresponding secondary side response current is calculated to obtain the test current ratio corresponding to each test current of each designated mutual inductor.

[0043] The test current ratio corresponding to each test current of each specified transformer is calculated by difference with the rated current ratio of each specified transformer, and then the absolute value is taken, and then the ratio is calculated with the corresponding rated current ratio of each specified transformer to obtain the transformation ratio error corresponding to each test current of each specified transformer.

[0044] The transformation ratio error corresponding to each test current of each specified transformer is averaged and calculated to obtain the transformation ratio error corresponding to each specified transformer, and then the transformation ratio test evaluation index of each specified transformer is obtained through analysis.

[0045] It should be added that the specific method of analyzing and obtaining the transformation ratio test evaluation index of each specified mutual inductor is as follows: extracting the transformation ratio error degree Tred corresponding to each specified mutual inductor l , where l represents the number of the specified transformer, l=1,2......L, L represents the number of the specified transformer, using the formula The transformation ratio test evaluation index Trea of ​​each specified transformer is obtained by analysis. l .

[0046] In a preferred embodiment of the present invention, the phase difference test requires constructing a phase difference test evaluation index for each designated mutual inductor, and the specific method is as follows: connect the phase tester to the primary and secondary sides of each designated mutual inductor, start the phase tester and then collect the monitoring phase difference of each designated mutual inductor.

[0047] The monitored phase difference of each designated mutual inductor is calculated by difference with a preset phase difference threshold, and then the monitored phase difference of each designated mutual inductor is calculated by ratio with the preset phase difference threshold to obtain the phase difference constant of each designated mutual inductor.

[0048] Based on the phase difference constant analysis of each designated mutual inductor, the phase difference test evaluation index of each designated mutual inductor is obtained.

[0049] It should be added that the specific method of analyzing and obtaining the phase difference test evaluation index of each specified mutual inductor is as follows: extracting the phase difference constant Pdad of each specified mutual inductor l , using the formula The phase difference test evaluation index Pdai of each specified mutual inductor is obtained by analysis. l .

[0050] The transformer quality abnormality identification module is used to determine whether each designated transformer has a quality abnormality based on the results of the corresponding quality detection of each designated transformer.

[0051] In a preferred embodiment of the present invention, the specific method of judging whether each designated transformer has quality abnormalities is as follows: extracting the transformation ratio test evaluation index and phase difference test evaluation index of each designated transformer, and then summing them up according to the weight to obtain the detection evaluation index of each designated transformer.

[0052] Exemplarily, the weights corresponding to the transformation ratio test evaluation index and the phase difference test evaluation index of each designated transformer are 0.6 and 0.4, respectively.

[0053] It should be explained that the weights corresponding to the transformation ratio test evaluation index and phase difference test evaluation index of each designated transformer are set based on: first, the importance of the application scenario. In the electric energy metering scenario, the transformation ratio accuracy has a great influence on the metering result. Second, the degree of influence on system stability. The weights of the two are relatively balanced at the key nodes of the power grid; local equipment is flexibly allocated according to its sensitivity to transformation ratio and phase difference errors. Third, the difference in the impact of errors on equipment performance. Considering the degradation of equipment performance, when the transformation ratio error causes the equipment to be overloaded or underloaded, the transformation ratio weight is set higher; in this way, it fully meets the needs of different working conditions and ensures the accurate and reliable operation of the transformer.

[0054] The detection evaluation index of each designated mutual inductor is compared with the preset detection evaluation index threshold. If the detection evaluation index of a designated mutual inductor is greater than or equal to the preset detection evaluation index threshold, it is judged that the designated mutual inductor has no quality abnormality. Otherwise, it is judged that the designated mutual inductor has quality abnormality.

[0055] Exemplarily, the detection evaluation index threshold is 0.85.

[0056] It should be noted that the basis for setting the detection and evaluation index threshold is mainly the standard specifications and design requirements of the transformer, which clearly define the accuracy level that the transformation ratio and phase difference should meet, laying the foundation for threshold setting; at the same time, the accuracy requirements of the actual application scenarios are taken into consideration. The electric energy metering scenario requires high precision, and the threshold needs to be set low to prevent error accumulation from affecting the metering. The relay protection scenario is set around ensuring the reliable operation of the device; the stability and reliability of the equipment operation must also be taken into account, so that the threshold matches the dynamic changes of the system to avoid misjudgment and ensure long-term stable operation; in addition, the impact of error accumulation and system compatibility must also be considered to prevent error accumulation from adversely affecting system accuracy and normal operation.

[0057] The designated transformer classification output module is used to perform classification output on each designated transformer using a classification output device.

[0058] It should be noted that the present invention performs test operations through assembly line equipment when testing the mutual inductor, and then classifies and outputs different test results. This analysis method greatly improves the test efficiency, so that the mutual inductor can smoothly and quickly complete the detection of each link on the automated assembly line, eliminating tedious manual connection time, and is even more efficient during batch testing; the precise assembly line program eliminates human operation errors and makes the test results objective and accurate. On this basis, different results are classified and output, and potential problems in the production link are accurately identified, which is conducive to timely optimization of the process and quality control; it can also reasonably allocate resources, and qualified products are quickly transferred to subsequent processes, and unqualified products are promptly reworked or scrapped, eliminating resource waste and comprehensively strengthening the systematic and standardized nature of production management.

[0059] The assembly line test quality analysis module is used to perform test quality monitoring on a designated transformer test assembly line, and the test quality monitoring specifically includes mechanical transmission quality monitoring and electrical connection quality monitoring.

[0060] It should be noted that the reasons for monitoring the mechanical transmission quality and electrical connection quality of the specified transformer test line are: 1. Stable mechanical transmission speed also helps to improve test efficiency, avoiding wasting time due to slow transmission speed or skipping some necessary test links due to too fast transmission speed. For mass-produced transformers, maintaining the stability of mechanical transmission quality is the key to ensuring product quality consistency. If the mechanical transmission process is unstable, different transformers will be subjected to different mechanical forces and positioning conditions, which may cause differences in their performance. 2. The electrical connection quality of the transformer directly affects the accuracy of the test data. If there are problems such as oxidation, the resistance will increase and the signal transmission will be unstable. Unstable electrical connection may cause the measured secondary current or voltage to fluctuate, resulting in large errors in the ratio test results, which cannot truly reflect the performance of the transformer.

[0061] In a preferred embodiment of the present invention, the mechanical transmission quality monitoring needs to construct a mechanical transmission quality index of a specified transformer test line, and the specific method is as follows: obtain the conveyor belt speed in the conveying device of the specified transformer test line, draw a conveyor belt speed change curve of the specified transformer test line with time as the horizontal coordinate and the conveyor belt speed as the vertical coordinate, and evenly distribute the points on the curve based on equal intervals to obtain a number of speed monitoring points, and mark the vertical coordinate corresponding to each speed monitoring point as the monitoring speed corresponding to each speed monitoring point of the conveyor belt, which is recorded as v i , where i represents the number of the speed monitoring point, i=1,2......I, and I represents the number of speed monitoring points.

[0062] Using the formula The analysis results in the specified transformer mechanical transmission quality index Sci, where v0 represents the preset transmission belt speed.

[0063] In a preferred embodiment of the present invention, the electrical connection quality monitoring needs to construct an electrical connection quality index of a specified transformer test line, and the specific method is as follows: a high-definition camera is used to obtain the structural image of each terminal of the detection device corresponding to the specified transformer test line, and a three-dimensional scanning device is used to obtain the three-dimensional structural data of each terminal of the detection device corresponding to the specified transformer test line, and then the surface area and volume of each terminal of the specified transformer test line are obtained, which are respectively recorded as S j 、V j , where j represents the terminal number, j=1,2......J, J represents the number of terminals.

[0064] Using the formula The electrical connection quality index Ecqi of the specified transformer test line is obtained by analysis, where S0 represents the standard surface area of ​​the terminal, V0 represents the preset standard volume, α1 and α2 represent the influence weight factors corresponding to the preset terminal surface area and volume, respectively, and e represents a natural constant.

[0065] Exemplarily, α1=0.6, α2=0.4.

[0066] It should be noted that when analyzing the electrical connection quality index of a specified transformer test line, the influencing weight factors corresponding to the terminal surface area and volume are set based on: First, the current carrying capacity. Under high current conditions, a larger surface area can reduce the current density, which is conducive to uniform current conduction, and a large volume is conducive to heat dissipation. Therefore, when it comes to high current and long-term high-load testing, the weight factors of the two need to be increased accordingly; second, the contact resistance factor. A large surface area can increase the actual contact area, which is conducive to reducing the contact resistance, which is of great significance for high-precision testing, and the volume can indirectly affect the contact resistance by ensuring the contact pressure, which cannot be ignored in scenarios where long-term stable low-resistance connections are required; third, the connection stability and reliability. A large surface area can enhance mechanical stability and resist vibration and impact. A large volume has strong resistance to deformation and is suitable for situations with external interference and frequent plugging and unplugging. The weight factors are determined comprehensively based on this to ensure accurate measurement of the electrical connection quality.

[0067] It should be noted that the present invention analyzes the quality of the transformer assembly line test while conducting the transformer assembly line test, specifically performing mechanical transmission quality monitoring and electrical connection quality monitoring. This analysis method can accurately control the accuracy of the test data, significantly improve the test efficiency, avoid frequent shutdowns of the assembly line, and facilitate in-depth optimization of the production process and equipment operation and maintenance, and accurately improve weak links based on monitoring data; it can also effectively enhance the stability of product quality, allowing the transformer to be tested under high-quality conditions, in line with the requirements of the power system.

[0068] The pipeline test environment detection module is used to obtain the environmental information of the specified transformer test pipeline, the environmental information specifically including temperature and magnetic field strength, and analyze the environmental factor evaluation of the specified transformer test pipeline.

[0069] It should be explained that the reason for selecting temperature and magnetic field strength as influencing factors for the environmental factor evaluation of the specified transformer test line is that temperature changes will affect the material properties and electrical parameters of the transformer, such as causing changes in its winding resistance and fluctuations in insulation performance, which in turn affect the accuracy of the test results; at the same time, the magnetic field strength cannot be ignored. Excessive external magnetic field may interfere with the normal electromagnetic induction of the transformer, causing deviations in the measurement data and destroying the accuracy of the test. In the actual environment, these two factors are prone to fluctuations, so they are used as influencing factors to comprehensively evaluate the environmental conditions of the assembly line and ensure the quality of transformer testing.

[0070] In a preferred embodiment of the present invention, the environmental factor evaluation situation of the specified transformer test line needs to be analyzed to construct an environmental factor evaluation index of the specified transformer test line, and the specific method is as follows: obtain the temperature and magnetic field strength of each detection area corresponding to the detection device of the specified transformer test line, which are respectively recorded as T k , H k , where k represents the number of the detection area, k=1,2...K, and K represents the number of detection areas.

[0071] It should be noted that, in the present invention, the number of detection areas K=2.

[0072] Using the formula The environmental factor evaluation index Efei of the specified transformer test line is obtained by analysis, where T0 represents the preset reference temperature, H0 represents the preset reference magnetic field strength, and β1 and β2 represent the influence weight factors of the preset temperature and magnetic field strength, respectively.

[0073] Exemplarily, β1=0.65, β2=0.35.

[0074] It should be noted that when analyzing the environmental factor evaluation index of a specified transformer test line, the basis for setting the weight factors of temperature and magnetic field strength is: first, the two have different degrees of influence on the performance of the transformer. Temperature can significantly change key indicators such as the magnetic permeability of the transformer core and the winding resistance in multiple dimensions, directly affecting the test accuracy, and the impact is greater than the magnetic field strength. Therefore, the temperature weight is often higher; secondly, the temperature fluctuates frequently in the real environment and is extremely difficult to control accurately. Although the magnetic field intensity fluctuates, it is easier to control through layout and shielding methods. Based on volatility and controllability, the temperature weight will be increased; finally, different application scenarios have different sensitivities. High-precision measurement scenarios are extremely sensitive to temperature changes, and the weight needs to be highlighted. Scenarios around strong magnetic fields should focus on increasing the magnetic field strength weight to match the characteristics of the scenario, so that the weight factor is scientific and reasonable and accurately reflects the environmental impact.

[0075] The pipeline abnormality identification module is used to determine whether there is a pipeline test abnormality in the specified mutual inductor test pipeline. If so, it identifies the specific abnormality direction and issues an early warning.

[0076] In a preferred embodiment of the present invention, the judgment of whether there is a pipeline test anomaly in the specified transformer test pipeline requires constructing an equipment operation quality evaluation index of the specified transformer test pipeline, and the specific method is as follows: extract the mechanical transmission quality index and electrical connection quality index of the specified transformer, and then sum them up according to the weight to obtain the equipment operation quality evaluation index of the specified transformer test pipeline.

[0077] Exemplarily, the weights corresponding to the mutual inductor mechanical transmission quality index and the electrical connection quality index are specified to be 0.45 and 0.55.

[0078] It should be noted that when analyzing the equipment operation quality evaluation index of the specified transformer test line, the weights of the mechanical transmission quality index and the electrical connection quality index of the specified transformer are set based on: First, the importance difference of the overall function of the equipment. Mechanical transmission controls the physical movement and positioning accuracy of the transformer. Once a mistake is made, it is easy to damage the transformer and interrupt the test; electrical connection is related to signal transmission and test data accuracy. The two have different focuses, and weights are allocated according to the importance. Second, the probability of failure and the degree of impact. Mechanical transmission failures are mostly caused by wear of mechanical parts and abnormal transmission. The probability of occurrence is high and the probability of damage to the transformer is high; electrical connection failures are caused by poor contact and aging of the line, which affects the test data. The weight is weighed according to the failure rate and the depth of impact. Third, the maintenance cost and difficulty are considered. Mechanical failures take a long time to repair and often require disassembly and replacement of parts; electrical connection faults are relatively convenient to troubleshoot and have low maintenance costs. Combining the maintenance characteristics of the two, in order to highlight high-cost and high-difficulty maintenance projects, the weights are reasonably adjusted to fully meet the actual operation and maintenance of the assembly line and accurately evaluate the equipment operation quality.

[0079] In a preferred embodiment of the present invention, the specific method for determining whether there is a pipeline test anomaly in the specified transformer test pipeline is as follows: extract the equipment operation quality evaluation index and environmental factor evaluation index of the specified transformer test pipeline, and then compare them with the pre-set equipment operation quality evaluation index threshold and environmental factor evaluation index threshold respectively.

[0080] If the equipment operation quality evaluation index of the specified transformer test line is greater than or equal to the equipment operation quality evaluation index threshold and the environmental factor evaluation index is greater than or equal to the environmental factor evaluation index threshold, it is judged that there is no pipeline test abnormality in the specified transformer test line; otherwise, it is judged that there is a pipeline test abnormality in the specified transformer test line.

[0081] Exemplarily, the threshold value of the equipment operation quality evaluation index is 0.85, and the threshold value of the environmental factor evaluation index is 0.8.

[0082] In a preferred embodiment of the present invention, please refer to Figure 3 As shown, the method of identifying the specific abnormal direction is as follows: if the equipment operation quality evaluation index of the specified transformer test line is less than the equipment operation quality evaluation index threshold, the specific abnormal direction is identified as equipment operation abnormality.

[0083] If the environmental factor evaluation index of the specified transformer test line is less than the environmental factor evaluation index threshold, the specific abnormality is identified as an environmental control abnormality.

[0084] It should be noted that the specific abnormality may point to one or both of equipment operation abnormality and environmental control abnormality.

[0085] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. Based on the wide range distributed transformer assembly line test system of the smart laboratory, it is characterized by: include: A transformer detection equipment setting module is used to set up transformer test line equipment, the equipment comprising a conveying device, a scanning device, a detection device and a classification output device; A transformer specification information identification module, used to transport each designated transformer using a transport device, and collect the transformer specification information using a scanning device, wherein the specification information includes a rated current ratio, a primary side rated current, and a secondary side rated current; A transformer quality test implementation module, used to perform quality detection on each designated transformer using a detection device, wherein the quality detection specifically includes a transformation ratio test and a phase difference test; A transformer quality abnormality identification module is used to determine whether each designated transformer has a quality abnormality based on the results of the corresponding quality detection of each designated transformer; A designated transformer classification output module is used to classify and output each designated transformer using a classification output device; The assembly line test quality analysis module is used to perform test quality monitoring on the specified transformer test assembly line, wherein the test quality monitoring specifically includes mechanical transmission quality monitoring and electrical connection quality monitoring; The pipeline test environment detection module is used to obtain the environmental information of the specified transformer test pipeline, the environmental information specifically includes temperature and magnetic field strength, and analyze the environmental factor evaluation of the specified transformer test pipeline; The assembly line abnormality identification module is used to determine whether there is an assembly line test abnormality in the specified transformer test assembly line. If so, it identifies the specific abnormality direction and issues an early warning.

2. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 1, characterized in that: The ratio test requires the construction of a ratio test evaluation index for each specified transformer, and the specific method is as follows: Extracting the primary side rated current, the secondary side rated current and the rated current ratio of each specified mutual inductor obtained by using the scanning device; The primary side rated current of each designated mutual inductor is multiplied by the preset selection ratio of each test current to obtain each test current corresponding to each designated mutual inductor; Apply each test current to the primary winding of each designated transformer, and then collect the secondary side response current corresponding to each test current of each designated transformer at the secondary winding of each designated transformer; Calculate the ratio of each test current of each designated mutual inductor to each corresponding secondary side response current to obtain the test current ratio corresponding to each test current of each designated mutual inductor; The test current ratio corresponding to each test current of each designated transformer is calculated by difference with the rated current ratio of each designated transformer, and then the absolute value is taken, and then the ratio is calculated with the rated current ratio of each designated transformer to obtain the transformation ratio error corresponding to each test current of each designated transformer; The transformation ratio error corresponding to each test current of each specified transformer is averaged and calculated to obtain the transformation ratio error corresponding to each specified transformer, and then the transformation ratio test evaluation index of each specified transformer is obtained through analysis.

3. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 2, characterized in that: The phase difference test requires constructing a phase difference test evaluation index for each specified mutual inductor, and the specific method is as follows: Connecting the phase tester to the primary side and the secondary side of each designated mutual inductor, starting the phase tester to collect the monitoring phase difference of each designated mutual inductor; The monitored phase difference of each designated mutual inductor is calculated by difference with a preset phase difference threshold, and then the monitored phase difference of each designated mutual inductor is calculated by ratio with the preset phase difference threshold to obtain the phase difference constant of each designated mutual inductor; Based on the phase difference constant analysis of each designated mutual inductor, the phase difference test evaluation index of each designated mutual inductor is obtained.

4. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 3, characterized in that: The specific method of judging whether each designated mutual inductor has quality abnormality is as follows: Extracting the transformation ratio test evaluation index and the phase difference test evaluation index of each designated mutual inductor, and then summing and calculating the detection evaluation index of each designated mutual inductor according to the weight; The detection evaluation index of each designated mutual inductor is compared with the preset detection evaluation index threshold. If the detection evaluation index of a designated mutual inductor is greater than or equal to the preset detection evaluation index threshold, it is judged that the designated mutual inductor has no quality abnormality. Otherwise, it is judged that the designated mutual inductor has quality abnormality.

5. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 1, characterized in that: The mechanical transmission quality monitoring requires the construction of a mechanical transmission quality index for a specified transformer test line, and the specific method is as follows: Obtain the conveyor belt speed in the conveying device of the specified transformer test line, draw the conveyor belt speed change curve of the specified transformer test line with time as the horizontal axis and the conveyor belt speed as the vertical axis, evenly distribute the points on the curve based on equal intervals to obtain several speed monitoring points, and mark the vertical coordinate corresponding to each speed monitoring point as the monitoring speed corresponding to each speed monitoring point of the conveyor belt, recorded as v i , where i represents the number of the speed monitoring point, i=1,2......I, I represents the number of speed monitoring points; Using the formula The mechanical transmission quality index Sci of the specified transformer is obtained by analysis, where v0 Indicates the preset conveyor belt speed.

6. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 5, characterized in that: The electrical connection quality monitoring requires the construction of an electrical connection quality index for a specified transformer test line, and the specific method is as follows: A high-definition camera is used to obtain the structural images of each terminal of the detection device corresponding to the specified transformer test line, and a three-dimensional scanning device is used to obtain the three-dimensional structural data of each terminal of the detection device corresponding to the specified transformer test line, and then the surface area and volume of each terminal of the specified transformer test line are obtained, which are respectively recorded as S j 、V j , where j represents the terminal number, j=1,2......J, J represents the number of terminals; Using the formula The electrical connection quality index Ecqi of the specified transformer test line is obtained by analysis, where S0 represents the standard surface area of ​​the terminal, V0 represents the preset standard volume, α1 and α2 represent the influence weight factors corresponding to the preset terminal surface area and volume, respectively, and e represents a natural constant.

7. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 6, characterized in that: The analysis of the environmental factor evaluation of the specified transformer test line requires the construction of an environmental factor evaluation index of the specified transformer test line, and the specific method is as follows: Get the temperature and magnetic field strength of each detection area of ​​the specified transformer test line detection device, denoted as T k , H k , where k represents the number of the detection area, k=1,2......K, K represents the number of detection areas; Using the formula The environmental factor evaluation index Efei of the specified transformer test line is obtained by analysis, where T0 represents the preset reference temperature, H0 represents the preset reference magnetic field strength, and β1 and β2 represent the influence weight factors of the preset temperature and magnetic field strength, respectively.

8. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 7, characterized in that: The determination of whether there is a pipeline test abnormality in the specified transformer test pipeline requires constructing an equipment operation quality evaluation index of the specified transformer test pipeline, and the specific method is as follows: The mechanical transmission quality index and electrical connection quality index of the specified transformer are extracted, and then the equipment operation quality evaluation index of the specified transformer test line is obtained by summing them up according to the weights.

9. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 8, characterized in that: The specific method of determining whether there is a pipeline test anomaly in the specified transformer test pipeline is as follows: Extract the equipment operation quality evaluation index and environmental factor evaluation index of the specified transformer test line, and then compare them with the preset equipment operation quality evaluation index threshold and environmental factor evaluation index threshold respectively; If the equipment operation quality evaluation index of the specified transformer test line is greater than or equal to the equipment operation quality evaluation index threshold and the environmental factor evaluation index is greater than or equal to the environmental factor evaluation index threshold, it is judged that there is no pipeline test abnormality in the specified transformer test line; otherwise, it is judged that there is a pipeline test abnormality in the specified transformer test line.

10. The wide-range distributed transformer assembly line test system based on the smart laboratory as claimed in claim 8, characterized in that: The method of identifying the specific abnormal direction is as follows: If the equipment operation quality evaluation index of the specified transformer test line is less than the equipment operation quality evaluation index threshold, the specific abnormality is identified as equipment operation abnormality; If the environmental factor evaluation index of the specified transformer test line is less than the environmental factor evaluation index threshold, the specific abnormality is identified as an environmental control abnormality.

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