Field inspection method and error correction method for infrared temperature measurement inspection device of transformer substation

Abstract

The invention discloses a substation infrared temperature measurement inspection device field inspection method and an error correction method, and relates to the technical field of substation equipment infrared accurate temperature measurement, the inspection method comprises the following steps: respectively dividing the detection distance and the temperature measurement range of a detected infrared temperature measurement inspection device to obtain N + 1 detection distances and M + 1 inspection temperature points; the distance between the black body combination and the detected infrared temperature measurement inspection device is sequentially adjusted to be N + 1 detection distances, and M + 1 detection temperature points are sequentially set; obtaining an inspection temperature measurement result of the black body combination detected by the detected infrared temperature measurement inspection device; carrying out error checking on the checking temperature measurement result, if the error requirement is not met, carrying out error correction through an error correction method, and taking an error correction result as an effective temperature measurement result; the temperature measurement accuracy error of the substation infrared temperature measurement inspection device is determined under different environment conditions and detection distances, error correction is performed according to the environment conditions and the detection distances of the temperature measurement error data, and the temperature measurement accuracy of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of infrared precision temperature measurement technology for power equipment, and more specifically, to on-site inspection methods and error correction methods for infrared temperature measurement inspection devices in substations. Background Technology

[0002] Currently, precise infrared temperature measurement has become one of the important and effective live-line detection methods for defects such as poor contact, overheating, insulation degradation, insufficient oil, and magnetic leakage in equipment within substations. The most common method is for technicians to periodically inspect the equipment within the substation using handheld infrared thermal imagers, and then diagnose the type and severity of temperature anomalies based on relevant standards. To ensure the accuracy and effectiveness of infrared thermal imager temperature measurement results, the temperature measurement performance of the infrared thermal imager must be calibrated or tested regularly in a laboratory environment. On-site testing can only be carried out after parameters such as temperature measurement accuracy and consistency meet the relevant standard requirements.

[0003] With the widespread application of intelligent and digital technologies, mobile infrared temperature measurement inspection devices such as inspection robots and drones are gradually being used in substations. These devices largely replace manual inspections and can automatically complete inspection records and defect diagnoses. Their mobility and continuity expand the inspection coverage and shorten inspection time. However, due to their large size and inconvenient transportation, many substation infrared temperature measurement inspection devices cannot undergo regular laboratory calibration or testing after being put into operation, making it impossible to control the changes in their temperature measurement performance over time. Furthermore, unlike manual inspections which aim to control environmental conditions and focus close to the equipment, substation infrared temperature measurement inspection devices are frequently used, located in various positions, and subject to diverse environmental conditions and varying measurement distances. The temperature measurement results are significantly affected by environmental and distance factors, potentially leading to inaccuracies and affecting the accurate assessment of the operating status of substation equipment. To address the existing problems, some researchers have used and verified on-site testing methods for the temperature measurement performance of infrared thermometers for power equipment, testing parameters such as temperature measurement accuracy and consistency in actual working environments. However, they have not combined environmental conditions and detection distance to evaluate the test results or correct temperature measurement errors. Other researchers have studied error correction methods for infrared thermometers to address the impact of detection distance and environmental conditions on temperature measurement results, but the introduced error influencing factors are limited, and some studies even lack accurate temperature comparisons. They cannot accurately obtain parameters such as the on-site temperature measurement accuracy and consistency of infrared thermometers in specific substations, nor can they provide accurate error correction methods for infrared thermometers to accurately measure the temperature of power equipment.

[0004] Therefore, there is an urgent need to design on-site inspection methods and error correction methods for infrared temperature measurement and inspection devices in substations. Summary of the Invention

[0005] The purpose of this invention is to provide an on-site inspection method and error correction method for an infrared temperature measurement inspection device in a substation. Under various environmental conditions and detection distances, the accuracy error of temperature measurement at multiple inspection temperature points of the infrared temperature measurement inspection device in a substation is obtained by detecting the blackbody standard temperature. Based on the environmental conditions and detection distances corresponding to each temperature measurement error data, a device error correction method is fitted to improve the device's temperature measurement accuracy.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: Firstly, this application provides a method for on-site inspection of infrared temperature measurement and inspection devices in substations, including the following specific steps: The detection distance and temperature measurement range of the infrared temperature measurement inspection device to be inspected are divided into N equal parts and M equal parts, respectively, to obtain N+1 detection distances and M+1 inspection temperature points; Under different weather and environmental conditions, the distance between the blackbody assembly and the infrared temperature measurement inspection device under inspection is adjusted to N+1 detection distances in sequence, and the temperature of the blackbody assembly is set to M+1 inspection temperature points in sequence when the distance is each detection distance. Obtain the inspection and temperature measurement results of the blackbody combination detected by the infrared temperature measurement inspection device under different detection distances and different inspection temperature points; The temperature measurement results are checked to see if the error meets the requirements. If the temperature measurement results do not meet the error requirements, the error is corrected using the error correction method, and the error correction result is taken as the valid temperature measurement result.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the aforementioned blackbody combination includes a low-temperature blackbody with a temperature range of at least -20℃ to 100℃ and a medium-temperature blackbody with a temperature range of at least 100℃ to 500℃, and the low-temperature blackbody and the medium-temperature blackbody are arranged adjacent to each other.

[0009] Furthermore, when the distance between the blackbody assembly and the infrared temperature measurement inspection device under test is adjusted to any one of N+1 detection distances, the infrared lens of the infrared temperature measurement inspection device under test is aligned with the low-temperature blackbody and the medium-temperature blackbody.

[0010] Furthermore, the aforementioned different weather conditions include night, overcast, cloudy, sunny, and hot; environmental conditions include ambient temperature, ambient humidity, and ambient wind speed.

[0011] Furthermore, the above-mentioned verification of whether the error of the temperature measurement results meets the requirements is specifically as follows: Remove outliers from each temperature measurement result; If the temperature measurement results after outlier removal meet the preset conditions, then the error requirements are considered met.

[0012] Furthermore, the above outlier removal specifically involves:

[0013] Calculate the inspection temperature measurement error for each inspection temperature measurement result. If the inspection temperature measurement error does not meet the requirements... If the temperature measurement error is found, the corresponding temperature measurement result is determined to be an outlier and removed; where: ; ; ; In the above formula, Indicates the first The temperature measurement error is verified by testing the temperature measurement results under different weather and environmental conditions. Indicates the first The average value of temperature measurement errors under various weather conditions. For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day; For the first Dynamic anomaly thresholds under various weather conditions Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination. For the first The total amount of data for testing temperature measurement results under various weather conditions. Based on the threshold, Indicates the first Weather factors of various weather conditions, nighttime weather Cloudy weather Cloudy weather Sunny weather Scorching sun ; For the first Adjustment factor for data volume under various weather conditions.

[0014] Furthermore, the aforementioned preset conditions are as follows: ; or ; In the formula, This indicates the numerical error in the temperature measurement results. This indicates the percentage error in the temperature measurement results. Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination.

[0015] Secondly, this application provides an error correction method for an infrared temperature measurement inspection device in a substation, used to correct errors in the temperature measurement results in the first aspect. The method specifically includes: ; In the formula, Indicates the first The error correction result of each temperature measurement result, i.e., the effective temperature measurement result; Indicates the first The temperature measurement results were tested under different weather and environmental conditions. This represents the measurement error coefficient.

[0016] Furthermore, the aforementioned measurement error coefficients are specifically as follows: ; ; ; In the formula, Indicates the measurement error coefficient. , ,in, These are the regression coefficients obtained based on the least squares method. For the corresponding temperature measurement results, This indicates the distance between the inspected infrared temperature measurement and inspection device and the blackbody. To test the ambient temperature during the test, This indicates the ambient humidity during the inspection period. This indicates the ambient wind speed during the testing period. To check the weather conditions during the period, For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day.

[0017] Furthermore, the objective function fitted using the least squares method is as follows: ; In the formula, Indicates the first The test temperature measurement error is determined by examining the temperature measurement results under different weather and environmental conditions.

[0018] Thirdly, this application provides an electronic device, including: at least one processor, at least one memory, and a data bus; The processor and memory communicate with each other via a data bus; the memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the method of either the first aspect or the second aspect.

[0019] Fourthly, this application provides a non-transitory computer-readable storage medium that stores computer instructions that cause a computer to perform the method of either the first or second aspect.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] This invention overcomes the problems of existing on-site testing methods for the temperature measurement performance of substation infrared temperature measurement inspection devices, which fail to consider environmental conditions and detection distance when evaluating test results or correcting temperature measurement errors. Furthermore, existing methods for correcting errors in on-site infrared temperature measurement data have limited influence factors and lack accurate temperature references, making it impossible to accurately test the temperature measurement performance of substation infrared temperature measurement inspection devices and effectively correct temperature measurement errors. This invention involves arranging one medium-temperature blackbody and one low-temperature blackbody adjacent to each other within the substation to conduct on-site testing of the substation infrared temperature measurement inspection device. Under as many different environmental conditions and detection distances as possible, the test results and temperature error data at multiple inspection temperature points within the temperature measurement range of the substation infrared temperature measurement inspection device are obtained. This allows for a determination of whether the device's temperature measurement performance meets the on-site testing requirements. Based on this, a method for correcting the temperature measurement error of the substation infrared temperature measurement inspection device is derived, and the temperature value after error correction is taken as the valid temperature measurement result.

[0022] This invention utilizes an infrared temperature measurement inspection device for the inspected substation during on-site inspections to simultaneously detect and display the temperature values ​​of two adjacent blackbody devices at all inspection points along all inspection distances. This provides both the inspection temperature measurement results and error data for the inspected device, and also allows for the assessment of the consistency of the temperature measurements displayed simultaneously on the device interface. Furthermore, on-site inspections of the infrared temperature measurement inspection device for the inspected substation are conducted under as many different environmental conditions as possible. This yields inspection temperature measurement results and error data for all inspection points along all inspection distances under numerous environmental conditions, accurately determining whether the temperature measurement performance of the inspected device meets the requirements for precise infrared temperature measurement of the substation's power equipment. For inspected devices that do not meet the requirements, an error correction method is proposed based on all inspection data of the inspected device at the substation. The corrected data serves as the infrared temperature measurement result of the inspected device, effectively improving the accuracy and effectiveness of on-site inspections.

[0023] This invention is simple in principle, easy to operate, and has a clear process. It provides an on-site inspection and performance evaluation method for infrared temperature measurement inspection devices in substations where laboratory testing is not feasible. Considering the variable working environment and distance of infrared temperature measurement inspection devices in substations, an error correction method is fitted based on on-site inspection data. Furthermore, as more and more on-site inspection data are acquired under various environmental conditions, the error correction method is continuously optimized, enabling substation infrared temperature measurement inspection devices to obtain more accurate detection results. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of the on-site inspection method in Embodiment 1 of the present invention; Figure 2 This is a flowchart of the on-site inspection method in Embodiment 3 of the present invention; Figure 3 This is a schematic diagram of the arrangement of the substation infrared temperature measurement inspection device and the blackbody during on-site inspection in an embodiment of the present invention; Figure 4 This is a schematic diagram of the blackbody reading of the substation infrared temperature measurement inspection device during on-site inspection in an embodiment of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, "multiple" means at least two.

[0031] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0032] Example 1: This example provides a method for on-site inspection of infrared temperature measurement and inspection devices in substations, such as... Figure 1 As shown, the specific steps include the following: S1, the detection distance and temperature range of the infrared temperature measurement inspection device to be inspected are divided into N equal parts and M equal parts, respectively, to obtain N+1 detection distances and M+1 inspection temperature points.

[0033] The aforementioned blackbody combination includes a low-temperature blackbody with a temperature range of at least -20℃ to 100℃ and a medium-temperature blackbody with a temperature range of at least 100℃ to 500℃, with the low-temperature blackbody and the medium-temperature blackbody arranged adjacent to each other. When the distance between the blackbody combination and the infrared temperature measurement and inspection device under test is adjusted to any one of N+1 detection distances, the infrared lens of the infrared temperature measurement and inspection device under test is aligned with the low-temperature blackbody and the medium-temperature blackbody. The heat source of the blackbody comes from its cavity, that is, the infrared lens of the infrared temperature measurement and inspection device under test is aligned with the cavity of the low-temperature blackbody and the cavity of the medium-temperature blackbody.

[0034] S2, under different weather and environmental conditions, the distance between the blackbody assembly and the infrared temperature measurement inspection device under inspection is adjusted to N+1 detection distances in sequence, and the temperature of the blackbody assembly is set to M+1 inspection temperature points in sequence when the distance is each detection distance.

[0035] The different weather conditions mentioned above include night, overcast, cloudy, sunny, and hot sun; environmental conditions include ambient temperature, ambient humidity, and ambient wind speed.

[0036] S3: Obtain the inspection temperature measurement results of the blackbody combination detected by the infrared temperature measurement inspection device under different detection distances and different inspection temperature points.

[0037] S4 verifies whether the temperature measurement result meets the error requirements. If the temperature measurement result does not meet the error requirements, the error is corrected using the error correction method, and the error correction result is taken as the valid temperature measurement result. In other words, the error correction result is taken as the valid temperature measurement result during the actual operation of the infrared temperature measurement inspection device under inspection.

[0038] Optionally, the above-mentioned verification of whether the error of the temperature measurement results meets the requirements is specifically as follows:

[0039] S41 removes outliers from each temperature measurement result.

[0040] Specifically, the removal of outliers involves: Calculate the inspection temperature measurement error for each inspection temperature measurement result. If the inspection temperature measurement error does not meet the requirements... If the temperature measurement error is found, the corresponding temperature measurement result is determined to be an outlier and removed; where: ; ; ; In the above formula, Indicates the first The temperature measurement error is verified by testing the temperature measurement results under different weather and environmental conditions. Indicates the first The average value of temperature measurement errors under various weather conditions. For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day; For the first Dynamic anomaly thresholds under various weather conditions Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination. For the first The total amount of data for testing temperature measurement results under various weather conditions. Based on the threshold, Indicates the first Weather factors of various weather conditions, nighttime weather Cloudy weather Cloudy weather Sunny weather Scorching sun ; For the first Adjustment factor for data volume under various weather conditions.

[0041] S42, if the temperature measurement results after outlier removal meet the preset conditions, then it is determined that the error requirements are met.

[0042] The aforementioned preset conditions are specifically as follows: ; or ;

[0043] In the formula, This indicates the numerical error in the temperature measurement results. This indicates the percentage error in the temperature measurement results. Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination.

[0044] Example 2: This application provides an error correction method for a substation infrared temperature measurement inspection device, used to correct errors in the temperature measurement results of Example 1. The method is as follows: ; In the formula, Indicates the first The error correction result of each temperature measurement result, i.e., the effective temperature measurement result; Indicates the first The temperature measurement results were tested under different weather and environmental conditions. This represents the measurement error coefficient.

[0045] Specifically, the aforementioned measurement error coefficients are as follows: ; ; ; In the formula, Indicates the measurement error coefficient. , ,in, These are the regression coefficients obtained based on the least squares method. For the corresponding temperature measurement results, This indicates the distance between the inspected infrared temperature measurement and inspection device and the blackbody. To test the ambient temperature during the test, This indicates the ambient humidity during the inspection period. This indicates the ambient wind speed during the testing period. To check the weather conditions during the period, For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day.

[0046] Specifically, the objective function fitted using the least squares method is as follows: ; In the formula, Indicates the first The test temperature measurement error is determined by examining the temperature measurement results under different weather and environmental conditions.

[0047] Example 3: This application provides a flowchart of a method for on-site inspection and error correction of an infrared temperature measurement inspection device in a substation, as shown in the example. Figure 2 As shown, it specifically includes: S1. In the absence of rain, hail, thunderstorms, or other weather conditions and when the wind speed is less than 1.5 m / s, a low-temperature blackbody with a temperature range of at least -20℃ to 100℃ and a medium-temperature blackbody with a temperature range of at least 100℃ to 500℃ are arranged adjacent to each other in the outdoor area of ​​the substation. The infrared temperature measurement and inspection device of the substation to be inspected is arranged on the same horizontal plane as the blackbody, and the infrared lens of the infrared temperature measurement and inspection device is aimed at the two blackbody cavities.

[0048] Specifically, see Figure 3 , Figure 3 This is a schematic diagram of the substation infrared temperature measurement inspection device and blackbody arrangement during on-site inspection. The infrared temperature measurement inspection robot and the two blackbody are arranged on the same horizontal plane by a lifting device, and the infrared lens of the infrared temperature measurement inspection robot is aimed at the cavity of the two blackbody.

[0049] S2. Based on the substation voltage level and safety distance requirements, determine the detection distance range of the infrared temperature measurement inspection device of the substation under inspection and divide it into N equal parts to determine (N+1) inspection distances. Divide the temperature measurement range of the infrared temperature measurement inspection device of the substation under inspection into M equal parts to determine (M+1) inspection temperature points. Inspect the temperature measurement performance of the infrared temperature measurement inspection device of the substation at each inspection distance and each inspection temperature point.

[0050] S3. Adjust the positions of the blackbody and the substation infrared temperature measurement and inspection device to a certain inspection distance. Adjust the two blackbody to two certain inspection temperature points respectively. After the blackbody temperature stabilizes, the substation infrared temperature measurement and inspection device detects the temperature of the cavity of the two blackbody in real time and displays it on the same interface. Record the maximum stable value of the two blackbody cavity temperatures displayed by the substation infrared temperature measurement and inspection device as the inspection temperature measurement result.

[0051] Among them, see Figure 3 , Figure 3 This is a schematic diagram of the blackbody reading of the infrared temperature measurement inspection device in the substation during on-site inspection; at this time, the medium-temperature blackbody temperature is set to 100℃, and the low-temperature blackbody temperature is set to 0℃. The drone interface displays the measured temperatures as 99.5℃ and -1.8℃, respectively.

[0052] S4. Continue to adjust the two blackbodies to other test temperature points, repeat S3, until the test temperature measurement results of all test temperature points of the infrared temperature measurement inspection device of the substation under inspection are obtained. Continue to change the test distance, repeat S3, until the test temperature measurement results of all test temperature points of the infrared temperature measurement inspection device of the substation under inspection are obtained at all test distances. Record the ambient temperature, ambient humidity, ambient wind speed, and weather conditions during the test.

[0053] The aforementioned weather conditions include five types: night, overcast, cloudy, sunny, and hot.

[0054] S5. If the environmental conditions change, repeat S3 and S4 to obtain the inspection temperature measurement results of all inspection temperature points of the infrared temperature measurement inspection device of the substation under inspection at all inspection distances under as many different environmental conditions as possible. Record the corresponding inspection distance, ambient temperature, ambient humidity, ambient wind speed and weather conditions.

[0055] S6. Organize all the inspection and temperature measurement results of the infrared temperature measurement inspection devices of the inspected substations, calculate all the inspection and temperature measurement errors θ(i), and based on the data validity judgment principle of weighted data under different weather conditions, remove abnormal inspection and temperature measurement results, and judge all the remaining inspection and temperature measurement results as valid inspection and temperature measurement results. These results are used to determine whether the on-site temperature measurement performance of the infrared temperature measurement inspection devices of the inspected substations meets the requirements and to calculate the error correction method.

[0056] Optionally, step S6 specifically includes: S61, compile the inspection and temperature measurement results of all inspection temperature points at all inspection distances under all environmental conditions of the infrared temperature measurement inspection device of the inspected substation, and calculate the inspection and temperature measurement error for each point: In the formula, Indicates the first The temperature measurement error is verified by testing the temperature measurement results under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination. Indicates the first The temperature measurement results were tested under different weather and environmental conditions.

[0057] S62, calculate the average value of all test temperature measurement error data obtained under each weather condition: In the formula, Indicates the first The average value of temperature measurement errors under various weather conditions. For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day; For the first The total amount of data for testing temperature measurement results under various weather conditions.

[0058] S63, the temperature measurement error is verified to meet the requirements. If the result is positive, the temperature measurement is considered valid; otherwise, it is considered an abnormal temperature measurement result. In the formula, the first... Dynamic anomaly threshold under various weather conditions ; Based on the threshold, Indicates the first Weather factors of various weather conditions, nighttime weather Cloudy weather Cloudy weather Sunny weather Scorching sun ; For the first Adjustment factor for data volume under various weather conditions.

[0059] The base threshold can be 3. At that time, the data volume adjustment factor can be 1.2. At that time, the data volume adjustment factor can be 1.0.

[0060] S64. After removing abnormal inspection and temperature measurement results, all remaining inspection and temperature measurement results are determined as valid inspection and temperature measurement results. These results are used to determine whether the on-site temperature measurement performance of the infrared temperature measurement inspection device of the inspected substation meets the requirements and to calculate the error correction method.

[0061] S7. If the temperature measurement error of all inspection distances and all inspection temperature points under all environmental conditions meets the requirements, the temperature measurement result of the infrared temperature measurement inspection device of the inspected substation in the substation is determined to be accurate and valid. Otherwise, the temperature measurement error of the infrared temperature measurement inspection device of the inspected substation is corrected, and the temperature reading of the infrared temperature measurement device of the inspected substation on the power equipment in the substation after error correction is taken as the valid temperature measurement result.

[0062] Optionally, step S7 above specifically includes:

[0063] S71, compile all valid inspection and temperature measurement results and corresponding temperature measurement error data of the infrared temperature measurement inspection device of the substation under inspection.

[0064] S72, if all the obtained temperature measurement error data satisfy: (The infrared temperature measurement and inspection device in the substation displays a temperature value less than 100℃), or: (The infrared temperature measurement device in the substation displays a temperature value of not less than 100℃), thus determining that the temperature measurement results of the infrared temperature measurement device in the inspected substation are accurate and valid; where, This indicates the numerical error in the temperature measurement results. This indicates the percentage error in the temperature measurement results.

[0065] S73, if any of the obtained temperature measurement error data does not meet the following requirements: (The infrared temperature measurement and inspection device in the substation displays a temperature value less than 100℃), or: (In cases where the infrared temperature measurement device in the substation displays a temperature value of not less than 100℃), the temperature measurement error of the infrared temperature measurement device in the inspected substation is corrected, and the expression is as follows: ; In the formula, Indicates the first The error correction result of each temperature measurement result, i.e., the effective temperature measurement result; Indicates the first The temperature measurement results were tested under different weather and environmental conditions. This represents the measurement error coefficient.

[0066] S74, The infrared temperature measurement inspection device in the inspected substation uses a measurement error coefficient to measure the temperature readings of the power equipment in the substation. The corrected result is considered a valid temperature measurement.

[0067] Specifically, the aforementioned measurement error coefficients are as follows: ; ; ; In the formula, Indicates the measurement error coefficient. , ,in, These are the regression coefficients obtained based on the least squares method. For the corresponding temperature measurement results, This indicates the distance between the inspected infrared temperature measurement and inspection device and the blackbody. To test the ambient temperature during the test, This indicates the ambient humidity during the inspection period. This indicates the ambient wind speed during the testing period. To check the weather conditions during the period, For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day.

[0068] Optionally, the objective function fitted using the least squares method described above is: ; In the formula, Indicates the first The test temperature measurement error is determined by examining the temperature measurement results under different weather and environmental conditions.

[0069] Example 4: This application provides an electronic device, including: at least one processor, at least one memory, and a data bus; The processor and memory communicate with each other via a data bus; the memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the method of any one of Embodiments 1-3.

[0070] Example 5: This application provides a non-transitory computer-readable storage medium that stores computer instructions that cause a computer to perform the method of any one of Examples 1-3.

[0071] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0072] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0073] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0074] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0075] Those skilled in the art will understand that all or part of the steps in the above facts and methods can be implemented by a program instructing related hardware. The program or the program described therein can be stored in a computer-readable storage medium. When the program is executed, it includes the following steps: at this time, the corresponding method steps are introduced. The storage medium can be ROM / RAM, magnetic disk, optical disk, etc.

[0076] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for on-site inspection of infrared temperature measurement and inspection devices in substations, characterized in that, The specific steps include the following: The detection distance and temperature measurement range of the infrared temperature measurement inspection device to be inspected are divided into N equal parts and M equal parts, respectively, to obtain N+1 detection distances and M+1 inspection temperature points; Under different weather and environmental conditions, the distance between the blackbody assembly and the infrared temperature measurement inspection device under inspection is adjusted to N+1 detection distances in sequence, and the temperature of the blackbody assembly is set to M+1 inspection temperature points in sequence when the distance is each detection distance. Obtain the inspection and temperature measurement results of the blackbody combination detected by the infrared temperature measurement inspection device under different detection distances and different inspection temperature points; The temperature measurement results are checked to see if the error meets the requirements. If the temperature measurement results do not meet the error requirements, the error is corrected using an error correction method, and the error correction result is taken as the valid temperature measurement result.

2. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 1, characterized in that, The blackbody assembly includes a low-temperature blackbody with a temperature range of at least -20℃ to 100℃ and a medium-temperature blackbody with a temperature range of at least 100℃ to 500℃, and the low-temperature blackbody and the medium-temperature blackbody are arranged adjacent to each other.

3. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 1, characterized in that, When the distance between the blackbody assembly and the infrared temperature measurement inspection device under test is adjusted to any one of N+1 detection distances, the infrared lens of the infrared temperature measurement inspection device under test is aligned with the low-temperature blackbody and the medium-temperature blackbody.

4. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 1, characterized in that, The different weather conditions include night, overcast, cloudy, sunny, and hot; the environmental conditions include ambient temperature, ambient humidity, and ambient wind speed.

5. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 1, characterized in that, The error of the temperature measurement results is checked to see if it meets the requirements, specifically as follows: Remove outliers from each temperature measurement result; If the temperature measurement results after outlier removal meet the preset conditions, then the error requirements are considered met.

6. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 5, characterized in that, The outlier removal specifically involves: Calculate the inspection temperature measurement error for each inspection temperature measurement result. If the inspection temperature measurement error does not meet the requirements... If the temperature measurement error is found, the corresponding temperature measurement result is determined to be an outlier and removed; where: ； ； ； In the above formula, Indicates the first The temperature measurement error is verified by testing the temperature measurement results under different weather and environmental conditions. Indicates the first The average value of temperature measurement errors under various weather conditions. For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day; For the first Dynamic anomaly thresholds under various weather conditions Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination. For the first The total amount of data for testing temperature measurement results under various weather conditions. Based on the threshold, Indicates the first Weather factors of various weather conditions, nighttime weather Cloudy weather Cloudy weather Sunny weather Scorching sun ; For the first Adjustment factor for data volume under various weather conditions.

7. The on-site inspection method for the substation infrared temperature measurement inspection device according to claim 5, characterized in that, The preset conditions are specifically as follows: ； or ； In the formula, This indicates the numerical error in the temperature measurement results. This indicates the percentage error in the temperature measurement results. Indicates the first The temperature measurement results were tested under different weather and environmental conditions. Indicates the first The blackbody standard temperature of the blackbody combination corresponding to each test temperature measurement result is the test temperature point set for the blackbody combination.

8. The error correction method for the substation infrared temperature measurement and inspection device according to claim 1, characterized in that, The error correction method is specifically as follows: ； In the formula, Indicates the first The error correction result of each temperature measurement result, i.e., the effective temperature measurement result; Indicates the first The temperature measurement results were tested under different weather and environmental conditions. This represents the measurement error coefficient.

9. The error correction method for the substation infrared temperature measurement and inspection device according to claim 8, characterized in that, The measurement error coefficient is specifically: ； ； ； In the formula, Indicates the measurement error coefficient. , ,in, These are the regression coefficients obtained based on the least squares method. For the corresponding temperature measurement results, This indicates the distance between the inspected infrared temperature measurement and inspection device and the blackbody. To test the ambient temperature during the test, This indicates the ambient humidity during the inspection period. This indicates the ambient wind speed during the testing period. To check the weather conditions during the period, For the nighttime weather, It was a cloudy day. It is cloudy. It was a sunny day. It was a sunny day.

10. The error correction method for the substation infrared temperature measurement and inspection device according to claim 9, characterized in that, The objective function fitted using the least squares method is: ； In the formula, Indicates the first The test temperature measurement error is determined by examining the temperature measurement results under different weather and environmental conditions.

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