Full-automatic electrical performance test method and system for uninterruptible power operation tool

Abstract

The invention discloses an uninterruptible power operation tool full-automatic electrical performance test method and system, and the method comprises the steps: carrying out the peak shifting time sequence control of at least two test stations, and sequentially starting the step-up, step-down and voltage stabilization maintaining processes of each station; during testing, synchronously recording test data such as leakage current of the stations and voltage state information of adjacent stations at corresponding moments; acquiring a test data set of the same tested tool in different test periods and different adjacent voltage states; and by comparing and analyzing the data set, according to the change of the test data along with the adjacent voltage state, whether the abnormality is related to the electrical mutual interference between the stations is judged. The method is adaptive to an existing full-automatic test platform, the reliability and repeatability of a test result are remarkably improved, and data support is provided for tool full-life-cycle management.

Description

Technical Field

[0001] This application relates to the field of electrical testing technology, specifically to a fully automatic electrical performance testing method and system for uninterrupted power supply tools. Background Technology

[0002] The electrical performance of live-line working (LLM) tools directly affects the safety and reliability of power operations, and their electrical performance testing is a crucial aspect of power operation and maintenance. With the increasing demands for operational efficiency in the power industry, multi-station parallel testing has become an inevitable choice to meet the testing needs of large-scale LLM equipment.

[0003] The safety testing platform for live-line working equipment typically adopts a fully automated testing method, which can simultaneously conduct electrical tests at no less than 8 workstations, covering items such as power frequency withstand voltage test and leakage current test. The test results must be reliable, repeatable and traceable to support the full life cycle management of the tool.

[0004] However, in practical engineering applications, when multiple high-voltage testing stations are conducted simultaneously, three types of electrical phenomena inevitably occur: First, the spatial electric fields from multiple high-voltage stations are superimposed, altering the local electric field distribution; second, the shared grounding network causes slight fluctuations in grounding potential due to changes in leakage current at different stations; and third, parasitic capacitance exists between test specimens, electrodes, and leads at adjacent stations, which introduces coupling current under high-voltage conditions. While these phenomena do not pose a risk to personal or equipment safety, they can lead to abnormal fluctuations in leakage current at individual stations and poor repeatability of test results.

[0005] Existing test procedures and automated test platforms assume that each workstation is independent and do not specifically address the mutual influence between these workstations at the test method level. As a result, when abnormal test results occur, it is difficult to distinguish whether the abnormality is caused by the insulation performance defects of the tested tool itself or by electrical interference between workstations. This seriously affects the accuracy and reliability of the test results and restricts the engineering application effect of multi-workstation parallel testing technology. Summary of the Invention

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a fully automatic electrical performance testing method and system for uninterrupted power supply tools.

[0007] The first aspect provides a fully automatic electrical performance testing method for uninterrupted power supply tools. The method includes: performing staggered timing control on the testing process of at least two test stations, including: sequentially starting the voltage boosting stage of each station according to a preset station sequence; starting the voltage boosting stage of the next station after the previous station completes the voltage boosting stage and enters the voltage stabilization and holding stage; and sequentially starting the voltage reduction stage of each station after completing its own voltage stabilization and holding stage.

[0008] When performing electrical performance tests at any workstation, the test data of that workstation is recorded simultaneously, and the voltage status information of at least one adjacent workstation at the corresponding time is collected simultaneously. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data.

[0009] Obtain test datasets corresponding to the same test tool under different test cycles and different adjacent workstation voltage states. The test datasets include test data and its corresponding adjacent workstation voltage state information.

[0010] The test data of the same test tool in the test dataset are compared and analyzed. Based on the changes in the test data with the voltage status of adjacent workstations, it is determined whether the abnormal test data of the test tool is related to electrical interference between workstations.

[0011] Preferably, the step of sequentially activating the voltage boosting stage of each station is specifically: when the voltage value of the previous station rises to the target test voltage of the first preset ratio, the voltage boosting stage of the next station is activated.

[0012] Preferably, the synchronous acquisition of voltage status information of at least one adjacent workstation at the corresponding time specifically involves: when recording leakage current data of the workstation during the voltage stabilization and maintenance phase, synchronously acquiring and recording voltage status information of each adjacent workstation at the corresponding sampling time at a preset sampling frequency.

[0013] Preferably, the comparative analysis of test data belonging to the same test instrument in the test dataset includes:

[0014] Calculate the first relative deviation between the first stable value of leakage current obtained under the first test condition and the second stable value of leakage current obtained under the second test condition in the test dataset, wherein the difference between the first test condition and the second test condition is that the voltage status information of adjacent workstations is different.

[0015] If the first relative deviation exceeds the first preset threshold, it is preliminarily determined that the abnormal test data is related to electrical interference between workstations.

[0016] Preferably, a second relative deviation is calculated between the first leakage current fluctuation range obtained under the first test condition and the second leakage current fluctuation range obtained under the second test condition in the test dataset;

[0017] If the first relative deviation exceeds the first preset threshold and the second relative deviation exceeds the second preset threshold, then the abnormal test data is determined to be related to electrical interference between workstations.

[0018] Preferably, the method further includes classifying and marking the test data anomalies based on the judgment results. The classification types include environmental interference anomalies caused by electrical interference between workstations and tool-body anomalies caused by the insulation performance of the tested tool itself.

[0019] Preferably, the voltage status information is obtained by monitoring the test process control signals of adjacent workstations. The test process control signals include signals indicating the start of voltage boost, the completion of voltage boost, the start of voltage stabilization, the end of voltage stabilization, the start of voltage reduction, and the completion of voltage reduction.

[0020] This application provides a fully automated electrical performance testing method for live-line working tools. This method effectively solves the technical problem of difficulty in distinguishing the causes of test data anomalies due to electrical interference between workstations in multi-station parallel testing through the systematic implementation of peak-shaving timing control, synchronous acquisition of adjacent voltage status information, test data comparison and analysis, and anomaly classification marking. It significantly improves the reliability and repeatability of electrical performance test results for live-line working tools. Peak-shaving timing control reduces the intensity of interference between workstations, synchronous acquisition and comparative analysis achieve accurate differentiation between interference and inherent defects, and anomaly classification marking provides a clear basis for subsequent re-inspection and management. It is fully compatible with existing fully automated testing platforms with at least two workstations, and complies with current testing standards and safety distance requirements. The entire testing process is automated, requiring no manual intervention, ensuring the objectivity and consistency of test results. The test data has complete traceability, supporting secondary analysis according to dimensions such as the tested tool and adjacent voltage status, providing data support for the full lifecycle management of the tool, and overall meeting the needs for safe, rapid, and accurate testing of large-scale live-line working equipment.

[0021] The second aspect provides a fully automated electrical performance testing system for live-line working tools, the system comprising:

[0022] The staggered timing control module is used to perform staggered timing control on the test process of at least two test stations, including: starting the boost phase of each station in sequence according to the preset station sequence; starting the boost phase of the next station after the previous station completes the boost phase and enters the voltage stabilization and holding phase; and starting the respective buck phase of each station in sequence after completing its own voltage stabilization and holding phase.

[0023] The synchronous recording module is used to synchronously record the test data of any station during electrical performance testing, and synchronously collect the voltage status information of at least one adjacent station at the corresponding time. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data.

[0024] The test dataset acquisition module is used to acquire the test dataset corresponding to the same test tool in different test cycles and under different adjacent workstation voltage states. The test dataset includes test data and its corresponding adjacent workstation voltage state information.

[0025] The comparative analysis module is used to compare and analyze the test data of the same test tool in the test dataset. Based on the changes in the test data with the voltage status of adjacent workstations, it determines whether the abnormal test data of the test tool is related to electrical interference between workstations.

[0026] A third aspect provides a computer device including a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method of the first aspect.

[0027] The fourth aspect provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method of the first aspect. Attached Figure Description

[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 A flowchart illustrating the steps of a fully automated electrical performance testing method for live-line working tools provided in this application;

[0030] Figure 2 A flowchart illustrating the steps of the peak-shaving timing control method provided in this application embodiment;

[0031] Figure 3 A flowchart illustrating the steps of the comparative analysis method provided in this application embodiment;

[0032] Figure 4 A structural block diagram of a fully automatic electrical performance testing system for live-line working tools provided in this application;

[0033] Figure 5 This is a schematic diagram of the structure of a computer system provided in this application. Detailed Implementation

[0034] It should be noted that the user information involved in all embodiments of this application includes, but is not limited to, user device information, user personal information, object information corresponding to device usage data, etc., and the data includes, but is not limited to, data used for analysis, stored data, displayed data, device usage data, etc., all of which are information and data authorized by the user or fully authorized by all parties.

[0035] This method is applicable to fully automated testing scenarios where electrical performance testing of live-line working tools is conducted in a multi-station parallel manner, and is particularly suitable for centralized safety tool testing platforms. Its implementation typically requires the following conditions: at least two independent testing stations are set up on the same testing platform, each station can simultaneously perform electrical performance tests such as power frequency withstand voltage tests and leakage current tests on different live-line working tools; the testing platform has the ability to automatically control and record the testing process of each station, and can output test process control signals indicating the start of voltage boost, completion of voltage boost, start of voltage stabilization, end of voltage stabilization, start of voltage reduction, and completion of voltage reduction, without requiring any additional testing devices or changes to the testing hardware structure.

[0036] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Please refer to Figure 1 , Figure 1 This application provides a fully automatic electrical performance testing method for live-line working tools, the method comprising:

[0039] S1, implement staggered timing control for the test process of at least two test stations, including: starting the boost phase of each station in sequence according to the preset station sequence; starting the boost phase of the next station after the previous station completes the boost phase and enters the voltage stabilization and holding phase; and starting the respective depressurization phase of each station in sequence after completing its own voltage stabilization and holding phase.

[0040] S2, When performing electrical performance testing at any workstation, the test data of that workstation is recorded simultaneously, and the voltage status information of at least one adjacent workstation at the corresponding time is collected simultaneously. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data.

[0041] S3, obtain the test dataset corresponding to the same test tool in different test cycles and under different adjacent station voltage states, the test dataset includes test data and its corresponding adjacent station voltage state information;

[0042] S4. Compare and analyze the test data of the same test tool in the test dataset. Based on the changes in the test data with the voltage status of adjacent workstations, determine whether the abnormal test data of the test tool is related to electrical interference between workstations.

[0043] In some embodiments, for step S1, the staggered timing control aims to reduce the number of stations in a high-voltage state at the same time by orderly staggering the time nodes of the test process for each station, thereby reducing the intensity of electrical interference between stations and laying the foundation for subsequent differentiation of the cause of anomalies. This solves the technical problem of excessively high peak interference caused by synchronous voltage increase and decrease in traditional multi-station parallel testing, which makes it impossible to distinguish the source of anomalies. Its principle lies in dispersing the originally concentrated interference into different time intervals through timing optimization, allowing the impact of interference to be identified through subsequent comparative analysis.

[0044] Please see Figure 2 , Figure 2 A flowchart illustrating the steps of the peak-shaving timing control method provided in this application embodiment. The specific implementation process consists of the following steps:

[0045] In step S201, a preset station sequence is determined. Before initiating a multi-station parallel test, a preset station sequence can be established based on the station layout of the test platform, the type of the tested instrument, and the test parameter requirements. This station sequence clarifies the order in which each station initiates its voltage boosting phase, and its setting method can be flexibly adjusted. For example, the sequence can be set from left to right or from front to back according to the physical location of the stations on the test platform; alternatively, based on the number of adjacent stations, peripheral stations with fewer adjacent stations can be prioritized at the beginning of the sequence, while intermediate stations with more adjacent stations can be arranged at the end of the sequence; furthermore, considering the test voltage level of the tested instrument, stations with lower test voltages can be started first, followed by stations with higher test voltages. After the station sequence is determined, it is stored in the control unit of the test platform as the basis for staggered timing control.

[0046] In S202, peak-shaving control during the voltage boosting phase. Peak-shaving control during the voltage boosting phase strictly follows a preset station sequence. The specific operation is as follows: First, the control unit sends a voltage boosting start signal to the first station in the sequence. The high-voltage generator at that station starts, and voltage boosting begins according to the preset boosting rate. The boosting rate setting must meet the requirements of current test standards; for example, it can be configured to 1-5kV / s to ensure that the tested equipment will not suffer overvoltage surges due to excessively rapid voltage boosting.

[0047] Secondly, the control unit monitors the voltage value of the first station in real time. When the voltage value of this station rises to the target test voltage of a first preset ratio, the control unit sends a boost start signal to the second station in the sequence to start the boost process of the second station. The determination of the first preset ratio needs to take into account both test efficiency and mutual interference suppression effect. For example, it can be configured to 30%-60% of the target test voltage. In one example, if the target test voltage is 10kV, the first preset ratio can be set to 40%, that is, when the voltage of the first station rises to 4kV, the second station starts boosting.

[0048] Then, following the above logic, the voltage boosting process of subsequent stations in the sequence is initiated sequentially; that is, after the voltage of the previous station reaches the target test voltage of the first preset ratio, the voltage boosting of the next station begins. Through this control method, the number of stations simultaneously in the voltage boosting stage within the test space is strictly controlled at any given time, avoiding the rapid superposition of the spatial electric field caused by multiple stations simultaneously boosting. During the voltage boosting process at each station, the control unit continuously collects the voltage feedback signal from each station to ensure a smooth boosting process and accurate voltage tracking of the preset curve. If voltage fluctuations exceed the preset allowable range, the control unit immediately issues an adjustment signal to control the high-voltage generator to correct the output voltage, ensuring the stability of the voltage boosting process.

[0049] In S203, the transition control of the voltage stabilization and holding phase is as follows: When the voltage at a certain station rises to the target test voltage, the control unit sends a voltage stabilization and holding signal to the high-voltage generator at that station, and that station enters the voltage stabilization and holding phase. The voltage stabilization and holding time is set according to the current test standard or the technical requirements of the tested equipment, for example, it can be configured to 1-10 minutes. According to the staggered timing control logic, the next station only starts the voltage rise phase after the previous station has completed the voltage boost phase and entered the voltage stabilization and holding phase. Therefore, when the earlier station in the sequence is in the voltage stabilization and holding phase, the later station in the sequence may still be in the voltage boost phase.

[0050] For example, when the first station in the sequence enters the voltage stabilization and holding phase, the second station may be in the middle of the voltage boosting phase, and the third station may have just started the voltage boosting phase. This mismatch in the test phases between stations means that the voltage state of the station in the voltage stabilization and holding phase (the core test phase) is dynamically changing with its adjacent stations, providing conditions for obtaining test data under different adjacent voltage states. During the voltage stabilization and holding phase, the control unit continuously monitors the test voltage and leakage current values ​​of the station to ensure that the test voltage is stable within ±2% of the target value, while recording real-time leakage current data to provide the original basis for subsequent analysis.

[0051] In S204, peak-shaving control during the voltage reduction phase. Once a workstation completes its preset voltage stabilization and holding time, the control unit sends a voltage reduction start signal to the high-voltage generator at that workstation, initiating the voltage reduction phase. The voltage reduction rate must also meet current testing standards, for example, it can be configured to 2-10kV / s to avoid reverse voltage surges due to excessively rapid voltage reduction. The starting sequence of the voltage reduction phase for each workstation is consistent with the completion sequence of the voltage stabilization and holding phase; that is, the workstation that completes voltage stabilization and holding first starts voltage reduction first.

[0052] The control unit monitors the voltage value of the step-down station in real time. When the voltage of the station drops to a second preset proportion of the target test voltage, such as 10%-30% of the target test voltage, or after the preset step-down time is completed, if there are still stations in the voltage stabilization and holding phase, the control unit can continue to wait for the station to complete the voltage stabilization and holding phase before starting the step-down process. If all stations have completed the voltage stabilization and holding phase, the step-down process of the remaining stations is started sequentially. When the voltage of a certain station drops below the safe voltage, such as ≤50V, the control unit sends a step-down completion signal to that station, cuts off the high-voltage circuit of that station, and completes the step-down process of that station. Through peak-shaving control of the step-down phase, the control unit avoids the drastic fluctuations in the grounding system potential and electromagnetic interference caused by the simultaneous rapid step-down of multiple stations, ensuring the electrical stability of the entire test process.

[0053] In some embodiments, for step S2, the recording of test data and the acquisition of adjacent voltage status information are the basis for realizing mutual interference identification. This solves the technical problem in traditional tests where only data from a single workstation is recorded, and there is a lack of correlation with the test environment status, making it difficult to trace the cause of the anomaly. The principle is to bind the test data of the test tool with the voltage status of adjacent workstations, so that the test data has environmental traceability.

[0054] Specifically, test data is the core information reflecting the electrical performance of the tested tool, including the tool's identification information, test voltage value, withstand voltage time, leakage current measurement value, and the test stage at the current work station.

[0055] The identification information of the tested tool is a unique identifier, which can be in the form of a QR code, barcode, or digital code. It is entered into the control unit by scanning or manual input before the test. This identification information is associated with the basic information of the tool, such as its model, specifications, manufacturer, and manufacturing date, to ensure that the test data corresponds one-to-one with the tested tool.

[0056] The test voltage value is acquired in real time by the control unit through a voltage sensor. The acquisition frequency is consistent with the acquisition frequency of the leakage current measurement, for example, it can be configured to 10-100Hz. The accuracy of the acquired data is not less than 0.1kV, ensuring accurate reflection of voltage changes during the test. The withstand voltage time, i.e., the actual duration of the voltage stabilization and holding phase, is started by the control unit when the station enters the voltage stabilization and holding phase and stops when it exits the voltage stabilization and holding phase. The timing accuracy is not less than 1 second, ensuring that the deviation from the preset voltage stabilization and holding time is within the allowable range.

[0057] The leakage current is measured using a leakage current sensor connected in series in the test circuit, with an accuracy of no less than 0.1μA. The raw data is filtered by the control unit to remove measurement noise before storage. The test phase at the current station is determined by the control unit based on its own control signals, and is divided into a boost phase, a voltage stabilization and holding phase, and a voltage reduction phase, all of which are recorded synchronously with the test data. All test data is stored in real time through the control unit's storage module in a structured data format to ensure data readability and traceability.

[0058] In one embodiment, the adjacent voltage status information includes four states: no voltage boost, voltage boosting, voltage stabilization, or voltage reduction. This status information is obtained by monitoring the test process control signals of the adjacent stations.

[0059] Among them, the non-boosting state means that the adjacent workstation has not received the boosting start signal from the control unit, the high voltage generator has not started, and the voltage is below the safe voltage; boosting in progress means that the adjacent workstation has received the boosting start signal, but has not yet received the boosting completion signal, and the voltage is in the process of rising from the safe voltage to the target test voltage; voltage stabilization state means that the adjacent workstation has received the boosting completion signal, but has not received the voltage reduction start signal, and the voltage is stable at the target test voltage; voltage reduction in progress means that the adjacent workstation has received the voltage reduction start signal, but has not yet received the voltage reduction completion signal, and the voltage is in the process of decreasing from the target test voltage to the safe voltage.

[0060] Optionally, the acquisition logic may include: when the control unit sends test process control signals (signals indicating the start of voltage boost, completion of voltage boost, start of voltage regulation, end of voltage regulation, start of voltage reduction, and completion of voltage reduction) to each workstation, it simultaneously transmits these signals to the status acquisition module. The status acquisition module monitors and analyzes the control signals of each workstation in real time to determine the current voltage status of each workstation. For the target workstation undergoing electrical performance testing, the status acquisition module focuses on monitoring the voltage status of at least one adjacent workstation. If the target workstation has adjacent workstations on both sides, the voltage status of the adjacent workstations on both sides is monitored simultaneously; if the target workstation has adjacent workstations on only one side, the voltage status of the adjacent workstation on that side is monitored.

[0061] In one embodiment, the core of synchronous acquisition is to ensure that the test data and the voltage status information of adjacent stations are completely corresponding in the time dimension. The specific implementation method may include: when the target station is recording leakage current data during the voltage stabilization and holding phase, the control unit triggers the leakage current sensor to collect leakage current data according to the preset sampling frequency, and at the same time triggers the status acquisition module to collect the voltage status information of adjacent stations. The sampling frequency can be set according to the test accuracy requirements, for example, it can be configured to 10-100Hz to ensure that subtle changes in leakage current and adjacent voltage status can be captured.

[0062] During each sampling, the control unit adds the same timestamp to the collected leakage current data and adjacent voltage status information. The timestamp accuracy is no less than 1 millisecond, enabling precise correlation between the test data and adjacent voltage status information. For example, when the sampling frequency is set to 50Hz, a sampling is triggered every 20 milliseconds. At a certain time t (timestamp t), the leakage current value I of the target station is collected. Simultaneously, it is collected that the adjacent station to its left is in the process of voltage boosting, and the adjacent station to its right is in the state of voltage stabilization. Then, (t, I, left side in voltage boosting, right side in voltage stabilization) is stored as a set of associated data to ensure that the adjacent voltage status corresponding to a certain leakage current value can be clearly identified in subsequent analysis. During synchronous acquisition, the control unit performs real-time verification on the collected data. If data is missing or the timestamp is mismatched, the data at that moment is re-collected to ensure the integrity and accuracy of the data.

[0063] Optionally, the test data and adjacent voltage status information are synchronously collected and verified, and then stored as a dataset. The dataset structure may include the following fields: test instrument identifier, timestamp, test voltage value, cumulative withstand voltage time, leakage current measurement value, target station test stage, adjacent station 1 voltage status, and adjacent station 2 voltage status (if present). Simultaneously, the database supports searching by fields such as test instrument identifier, timestamp, and adjacent station voltage status, facilitating rapid extraction of test data for the same test instrument under different adjacent voltage states.

[0064] In some embodiments, for step S3, to obtain test data sets of the same test tool under different voltage states at adjacent workstations, the same test tool can be tested multiple times, with each test constituting an independent test cycle. The arrangement of test cycles must ensure that the voltage state of adjacent workstations is different from that of other test cycles during each test.

[0065] It is understandable that the staggered timing control in step S1 causes a mismatch in the test phases of each station. In different test cycles, when the same test instrument is installed at the same station, the voltage state of its adjacent stations will differ due to changes in the test process timing of other stations. Alternatively, in different test cycles, the same test instrument can be installed at different stations, utilizing the differences in the adjacent environment of different stations to obtain different adjacent voltage states. The number of tests can be determined based on the type of adjacent voltage state. At least two tests can be performed to ensure that test data for the same test instrument under two different adjacent voltage states can be obtained. If it is necessary to cover all four adjacent voltage states, four or more tests can be performed.

[0066] The extraction of the test dataset involves filtering all test data and corresponding adjacent voltage status information for the same tested instrument from the stored associated data. Specific operations may include: retrieving the database based on the identification information and extracting all associated data containing that identification information; classifying the extracted associated data according to the test cycle, with each test cycle corresponding to a subset of data sets, each subset containing test data and adjacent voltage status information for all sampling times within that test cycle; and sorting each subset by time, arranging them in ascending order of timestamps to form an ordered subset, facilitating subsequent comparative analysis by tracing data changes chronologically.

[0067] In one embodiment, to ensure the accuracy of subsequent comparative analysis, valid data can be selected from the extracted test dataset. Valid data can meet the following conditions: First, the test process is uninterrupted and there are no fault alarms, meaning that no high-voltage circuit abnormalities, sensor failures, power outages, or other situations causing test interruptions occur during the test cycle, and all related data are complete and continuous data. Second, the deviation of test parameters from preset values ​​is within the preset allowable range, meaning the deviation of the test voltage value from the target test voltage does not exceed ±2%, and the deviation of the cumulative withstand voltage time from the preset voltage stabilization time does not exceed ±1%, ensuring consistent test conditions for each test. Third, the leakage current measurement data is complete, with no missing values ​​and no abnormal abrupt changes. An abnormal abrupt change can be defined as the difference between the leakage current value at a certain sampling time and the leakage current value at adjacent sampling times exceeding 50% of the average value of all sampled data. If an abnormal abrupt change exists, the abrupt change value and its corresponding adjacent voltage status information are removed to avoid abnormal data affecting the analysis results. After screening, the valid data is reorganized into a screened test dataset for subsequent comparative analysis.

[0068] In some embodiments, for step S4, the test data comparison and analysis is the core link in identifying electrical interference between workstations, which solves the technical problem that traditional tests cannot distinguish the cause of anomalies through data comparison. Its principle is to determine whether the change in test data is caused by the change in adjacent voltage state (i.e., electrical interference between workstations) by comparing the test data of the same test tool under different adjacent voltage states.

[0069] Please see Figure 3 , Figure 3 A flowchart illustrating the comparative analysis method provided in this application embodiment. The specific implementation process consists of the following steps:

[0070] In S301, test data selection and preprocessing are performed. A prerequisite for comparative analysis is ensuring that the test data used for comparison come from the same tested instrument and that the test conditions (except for adjacent voltage states) are completely consistent, including identical parameters such as test voltage, withstand time, voltage ramp rate, and voltage ramp rate. This avoids interference from differences in test conditions on the comparison results. Data preprocessing is fundamental to comparative analysis, aiming to eliminate the influence of measurement noise and irrelevant factors. Specific operations may include: smoothing the selected test dataset using a moving average method. Select 5-10 consecutive sampling data points as a window, calculate the arithmetic mean of the data within the window, and replace the original value of the center data point with this mean. Repeat this process for all data points. The smoothing formula is:

[0071]

[0072] in, Let be the smoothed leakage current value of the k-th data point, and m be the size of the moving window (m is an odd number). Let be the original leakage current value of the i-th data point. Smoothing is applied to remove high-frequency noise from the original leakage current data while preserving its trend. Statistical analysis is performed on the smoothed leakage current data to calculate the stable leakage current value and fluctuation range during the voltage stabilization phase in each test cycle, providing quantitative indicators for subsequent comparative analysis.

[0073] In S302, calculate the stable leakage current value. The stable leakage current value is a core indicator reflecting the insulation performance of the tested equipment. Its calculation method is as follows: In the ordered subset of data for each test cycle, select a continuous data segment from the middle of the voltage stabilization phase as the calculation sample. The length of the data segment can be configured to 30%-50% of the voltage stabilization time. For example, if the voltage stabilization time is 5 minutes, select continuous data from the middle 1.5-2.5 minutes as the calculation sample. This ensures that the selected data segment represents the stable state of the leakage current and avoids the influence of transitional data at the beginning and end of voltage stabilization on the calculation results. Calculate the arithmetic mean of all smoothed leakage current values ​​within the sample data segment. This average value is the stable leakage current value for that test cycle, using the following formula:

[0074]

[0075] in, Here, n represents the stable value of the leakage current, and n is the number of data points within the sample data segment. Let be the smoothed leakage current value of the j-th data point within the sample data segment. For example, in a certain test cycle, the selected sample data segment contains 1000 data points, and their smoothed leakage current values ​​are as follows: The stable value of the leakage current during this test cycle is the arithmetic mean of these 1000 data points.

[0076] In S303, the calculation and preliminary judgment of the first relative deviation. The first relative deviation is used to measure the degree of difference in the stable value of leakage current of the same tested tool under different adjacent voltage conditions. The specific calculation and judgment process may include: selecting two sets of test data under different test conditions from the screened test dataset, where the first test condition is that the adjacent station is in a certain voltage state, such as a voltage stabilization state, and the second test condition is that the adjacent station is in another different voltage state, such as a non-boosted state, and the test conditions of the two sets of test data (except for the adjacent voltage state) are completely consistent. The stable value of the first leakage current under the first test condition is calculated respectively. Second leakage current stability value under the second test condition Calculate the first relative deviation using the following formula. :

[0077]

[0078] in, This is the first relative deviation. This is the first stable value of the leakage current. This is the second stable leakage current value. Taking the absolute value ensures the deviation is positive, facilitating comparison with the preset threshold. The first preset threshold is also included. The determination of the first preset threshold needs to be based on a large amount of experimental data statistics, comprehensively considering the natural fluctuation range of the insulation performance of the tested tool and the degree of mutual interference between workstations. For example, it can be configured as 5%-10%. If the calculated first relative deviation... Exceeding the first preset threshold If the test data of the tested tool is abnormal, it is initially determined that the abnormality is related to electrical interference between workstations; if Not exceeding If the test data is abnormal, it is initially determined that it is not related to electrical interference between workstations, but may be caused by the insulation performance of the tested tool itself.

[0079] In S304, calculate the leakage current fluctuation range. The leakage current fluctuation range reflects the stability of the leakage current during the voltage stabilization phase. Its calculation method may include: finding the maximum smoothed leakage current value within the same sample data segment used to calculate the stable leakage current value. and minimum value Leakage current fluctuation range The calculation formula is:

[0080]

[0081] in, For the leakage current fluctuation range, This represents the maximum value of the smoothed leakage current within the sample data segment. This represents the minimum smoothed leakage current within the sample data segment. For example, if the maximum smoothed leakage current in a sample data segment of a certain test cycle is 5.2 μA and the minimum is 4.8 μA, then the leakage current fluctuation range for that test cycle is 0.4 μA.

[0082] In S305, the calculation and final determination of the second relative deviation. The second relative deviation is used to further verify the correlation between abnormal test data and electrical interference between workstations. The specific calculation and determination process is as follows: For the test data under the first test condition and the second test condition, the first leakage current fluctuation range is calculated respectively. Second leakage current fluctuation range Calculate the second relative deviation using the following formula. :

[0083]

[0084] in, This is the second relative deviation. This represents the first leakage current fluctuation range. This represents the second leakage current fluctuation range. A second preset threshold is defined. The second preset threshold is also determined based on statistical analysis of experimental data, and can be configured to, for example, 10%-20%. If the first relative deviation... Exceeding the first preset threshold And the second relative deviation Exceeding the second preset threshold If the test data anomalies of the tested tool are ultimately determined to be related to electrical interference between workstations, then... Exceed but Not exceeding If the abnormal fluctuations in leakage current are correlated with changes in adjacent voltage levels, then it is determined to be related to electrical interference between workstations; otherwise, the cause of the abnormality needs to be investigated again. Not exceeding Then regardless Does it exceed All tests determined that the abnormal test data was not related to electrical interference between workstations.

[0085] In one embodiment, the method further includes a correlation analysis between abnormal fluctuations and changes in adjacent voltage states. This correlation analysis is a supplementary determination method, and its specific implementation is as follows:

[0086] Real-time leakage current data of the same tested instrument in different test cycles are analyzed to identify abnormal fluctuations in leakage current. Abnormal fluctuations are defined as a change in leakage current value exceeding 30% of the average leakage current value within a continuous time period, and lasting for more than 1 second. The time interval of the abnormal fluctuation is extracted, and the voltage status changes of adjacent stations within this time interval are searched based on the timestamp. If the time of the abnormal fluctuation completely coincides with the time of voltage status change of the adjacent station (e.g., the adjacent station starts voltage boost, enters voltage stabilization and holding, starts voltage reduction), or the abnormal fluctuation occurs immediately after the voltage status change of the adjacent station, then the abnormal fluctuation is determined to be related to the voltage status change of the adjacent station. If the voltage status of the adjacent station does not change during the time of the abnormal fluctuation, then the abnormal fluctuation is determined to be unrelated to the voltage status change of the adjacent station. For example, during a certain test cycle, the leakage current of the tested tool fluctuates abnormally within the time period t1-t2. By querying the timestamp, it is found that the adjacent workstation starts to increase the voltage at time t1. Therefore, it is determined that the abnormal fluctuation is related to the voltage increase of the adjacent workstation (change in the voltage state of the adjacent workstation), which further confirms that the abnormal test data is related to the electrical interference between workstations.

[0087] In some embodiments, an anomaly classification marker is also included. The anomaly classification marker solves the technical problem in traditional tests that can only determine whether a test is qualified or not, but cannot clarify the cause of the anomaly. Its principle is to classify the anomaly into environmental interference type and tool body type based on the determination result of step S4, so as to provide a basis for subsequent re-inspection and management decisions.

[0088] Specifically, the criteria for classifying and marking the data are based on the final judgment result of step S4, as follows: If step S4 determines that the test data abnormality is related to electrical interference between workstations, then the abnormality is marked as an environmental interference type abnormality. This type of abnormality is caused by factors such as the superposition of spatial electric fields under multi-workstation parallel test conditions, grounding system potential fluctuations, and parasitic capacitance coupling between workstations, and is not caused by the insulation performance defects of the tested equipment itself.

[0089] If step S4 ultimately determines that the abnormal test data is not related to electrical interference between workstations, then it is further determined whether the abnormality is caused by the insulation performance of the tested tool itself. The specific determination method is as follows: compare the stable value of the leakage current of the tested tool with the leakage current limit specified in the current standard. If the stable value of the leakage current exceeds the limit, then the abnormality is marked as a tool body type abnormality. This type of abnormality is caused by defects such as decreased insulation performance or damage of the tested tool itself. If the stable value of the leakage current does not exceed the limit, then it is marked as no abnormality. The slight fluctuation of the test data may be caused by non-substantial factors such as measurement error.

[0090] Optionally, the tagging can be implemented by combining data labeling and report output, as follows: Data labeling: Add an anomaly type label field to the corresponding record in the test dataset. The label field can be set to "Environmental interference anomaly", "Tool body anomaly", or "No anomaly". For environmental interference anomalies, the label field can also be supplemented with information on the associated adjacent voltage status changes, such as environmental interference anomaly (adjacent workstation voltage boosting process); for tool body anomalies, supplement the comparison information between the stable leakage current value and the standard limit, such as tool body anomaly, for example, the stable leakage current value is 5.0 μA and the standard limit is 3.0 μA.

[0091] Report Output: Upon completion of the test, the control unit automatically generates a test report, which includes basic information about the tested tool, test parameters, statistical data (stable leakage current value and fluctuation range), anomaly determination results, anomaly type markings, and anomaly cause analysis. The test report can be stored electronically or printed for easy access and archiving by staff.

[0092] It is understandable that the marking results provide clear guidance for subsequent re-inspection, re-testing, and tool lifecycle management. Specifically, for test tools marked as environmental interference-type anomalies, no repair or replacement is required. Re-inspection can be conducted after adjusting the test conditions. For example, the tool can be tested alone in a test environment without adjacent high-voltage stations, or its station sequence can be adjusted in peak-shaving timing control to avoid high-voltage interference from adjacent stations. Normal test results can usually be obtained after re-inspection. For test tools marked as tool body-type anomalies, they must be stopped immediately for repair, insulation treatment, or replacement to avoid safety accidents during operation due to insulation performance defects. For test tools marked as having no anomalies, they can be put into normal use, and the test data should be included in the tool lifecycle management file to provide a comparison benchmark for subsequent periodic inspections.

[0093] This application effectively solves the technical problem of difficulty in distinguishing the causes of test data anomalies caused by electrical interference between workstations in multi-station parallel testing through the systematic implementation of peak-shifting timing control, synchronous acquisition of adjacent voltage status information, test data comparison and analysis, and anomaly classification marking. It significantly improves the reliability and repeatability of electrical performance test results for live-line working tools. Peak-shifting timing control reduces the intensity of interference between workstations, synchronous acquisition and comparative analysis enable accurate differentiation between interference and inherent defects, and anomaly classification marking provides a clear basis for subsequent re-inspection and management. It is fully compatible with existing fully automated testing platforms with at least two workstations, meeting current testing standards and safety distance requirements. The entire testing process is automated, requiring no manual intervention, ensuring the objectivity and consistency of test results. The test data has complete traceability, supporting secondary analysis according to dimensions such as the tested tool and adjacent voltage status, providing data support for the full lifecycle management of the tool, and overall meeting the needs for safe, rapid, and accurate testing of large-scale live-line working equipment.

[0094] It should be noted that although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. On the contrary, the steps depicted in the flowchart can be performed in a different order. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0095] Further reference Figure 4 The diagram illustrates an exemplary structural block diagram of a fully automated electrical performance testing system 400 for live-line working tools according to an embodiment of this application. The system 400 includes:

[0096] The staggered timing control module 401 is used to perform staggered timing control on the test process of at least two test stations, including: starting the boost phase of each station in sequence according to the preset station sequence; starting the boost phase of the next station after the previous station completes the boost phase and enters the voltage stabilization and holding phase; and starting the respective buck phase of each station in sequence after completing its own voltage stabilization and holding phase.

[0097] The synchronous recording module 402 is used to synchronously record the test data of any station when performing electrical performance testing, and synchronously collect the voltage status information of at least one adjacent station at the corresponding time. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data.

[0098] The test dataset acquisition module 403 is used to acquire the test dataset corresponding to the same test tool in different test cycles and under different adjacent workstation voltage states. The test dataset includes test data and its corresponding adjacent workstation voltage state information.

[0099] The comparison analysis module 404 is used to compare and analyze the test data of the same test tool in the test dataset, and to determine whether the test data abnormality of the test tool is related to the electrical interference between the workstations based on the change of the test data with the voltage status of adjacent workstations.

[0100] It should be understood that the units or modules described in System 400 are related to the reference. Figure 1 The steps in the described method correspond to each other. Therefore, the operations and features described above for the method also apply to system 400 and the units or modules contained therein, and will not be repeated here. System 400 can be pre-implemented in the browser or other security applications of an electronic device, or it can be loaded into the browser or other security applications of an electronic device by means of downloading. The corresponding units or modules in system 400 can cooperate with the units in the electronic device to implement the solution of the embodiments of this application.

[0101] The following is for reference. Figure 5 It shows a schematic diagram of the structure of a computer device 500 suitable for implementing the embodiments of this application.

[0102] like Figure 5As shown, the computer device 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 502 or programs loaded from storage section 508 into random access memory (RAM) 503. The RAM 503 also stores various programs and data required for the operation of the system 500. The CPU 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0103] The following components are connected to I / O interface 505: an input section 506 including a keyboard, mouse, etc.; an output section 507 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to I / O interface 505 as needed. A removable medium 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 510 as needed so that computer programs read from it can be installed into storage section 508 as needed.

[0104] Specifically, according to embodiments of this application, the above references Figure 1-3 The described process can be implemented as a computer software program. For example, embodiments of this application include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing instructions for performing... Figure 1-3 The program code for the method. In such an embodiment, the computer program can be downloaded and installed from a network via communication section 509, and / or installed from removable media 511.

[0105] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0106] The units or modules described in the embodiments of this application can be implemented in software or hardware. The described units or modules can also be located in a processor; for example, a processor can be described as including XX unit, YY unit, and ZZ unit. The names of these units or modules do not necessarily limit the unit or module itself; for example, XX unit can also be described as "a unit for XX".

[0107] In another aspect, this application also provides a computer-readable storage medium, which may be the computer-readable storage medium included in the apparatus described in the above embodiments; or it may be a standalone computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs, which are used by one or more processors to execute the fully automatic electrical performance testing method for uninterrupted power supply tools described in this application.

[0108] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A fully automatic electrical performance testing method for live-line working tools, characterized in that, The method includes: The test process for at least two test stations is subject to staggered timing control, including: starting the boost phase of each station in sequence according to the preset station sequence; starting the boost phase of the next station after the previous station has completed the boost phase and entered the voltage stabilization and holding phase; and starting the buck phase of each station in sequence after completing its own voltage stabilization and holding phase. When performing electrical performance tests at any workstation, the test data of that workstation is recorded simultaneously, and the voltage status information of at least one adjacent workstation at the corresponding time is collected simultaneously. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data. Obtain test datasets corresponding to the same test tool under different test cycles and different adjacent workstation voltage states. The test datasets include test data and its corresponding adjacent workstation voltage state information. The test data of the same test tool in the test dataset are compared and analyzed. Based on the changes in the test data with the voltage status of adjacent workstations, it is determined whether the abnormal test data of the test tool is related to electrical interference between workstations.

2. The method according to claim 1, characterized in that, The step-up phase of each station is started sequentially as follows: when the voltage value of the previous station rises to the target test voltage of the first preset ratio, the step-up phase of the next station is started.

3. The method according to claim 1, characterized in that, The synchronous acquisition of voltage status information of at least one adjacent station at the corresponding time specifically involves: when recording leakage current data of the station during the voltage stabilization and maintenance phase, synchronously acquiring and recording voltage status information of each adjacent station at the corresponding sampling time at a preset sampling frequency.

4. The method according to claim 1, characterized in that, Comparative analysis of test data belonging to the same test instrument in the test dataset includes: Calculate the first relative deviation between the first stable value of leakage current obtained under the first test condition and the second stable value of leakage current obtained under the second test condition in the test dataset, wherein the difference between the first test condition and the second test condition is that the voltage status information of adjacent workstations is different. If the first relative deviation exceeds the first preset threshold, it is preliminarily determined that the abnormal test data is related to electrical interference between workstations.

5. The method according to claim 4, characterized in that, Calculate the second relative deviation between the first leakage current fluctuation range obtained under the first test condition and the second leakage current fluctuation range obtained under the second test condition in the test dataset; If the first relative deviation exceeds the first preset threshold and the second relative deviation exceeds the second preset threshold, then the abnormal test data is determined to be related to electrical interference between workstations.

6. The method according to claim 2, characterized in that, It also includes classifying and marking the test data anomalies based on the judgment results. The classification types include environmental interference anomalies caused by electrical interference between workstations and tool-body anomalies caused by the insulation performance of the tested tool itself.

7. The method according to claim 1, characterized in that, The voltage status information is obtained by monitoring the test process control signals of adjacent workstations. The test process control signals include signals indicating the start of voltage boost, the completion of voltage boost, the start of voltage stabilization, the end of voltage stabilization, the start of voltage reduction, and the completion of voltage reduction.

8. A fully automatic electrical performance testing system for uninterrupted power supply tools, characterized in that, The system includes: The staggered timing control module is used to perform staggered timing control on the test process of at least two test stations, including: starting the boost phase of each station in sequence according to the preset station sequence; starting the boost phase of the next station after the previous station completes the boost phase and enters the voltage stabilization and holding phase; and starting the respective buck phase of each station in sequence after completing its own voltage stabilization and holding phase. The synchronous recording module is used to synchronously record the test data of any station during electrical performance testing, and synchronously collect the voltage status information of at least one adjacent station at the corresponding time. The voltage status information includes whether the voltage is not boosted, during the boosting process, during voltage stabilization, or during the bucking process. The test data includes at least leakage current data. The test dataset acquisition module is used to acquire the test dataset corresponding to the same test tool in different test cycles and under different adjacent workstation voltage states. The test dataset includes test data and its corresponding adjacent workstation voltage state information. The comparative analysis module is used to compare and analyze the test data of the same test tool in the test dataset. Based on the changes in the test data with the voltage status of adjacent workstations, it determines whether the abnormal test data of the test tool is related to electrical interference between workstations.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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