Electric reactor monitoring system

Abstract

The invention, which relates to the technical field of reactor monitoring, discloses a reactor monitoring system comprising an acquisition module, a plurality of indication stickers and an edge processor. The indication sticker comprises an adhesive layer and a discharge monitoring layer, all the adhesive layer is mounted on the reactor to be detected, and the discharge monitoring layer is arranged at the top of the adhesive layer; a plurality of film coating layers are arranged at the top of the discharge monitoring layer at equal intervals; the acquisition module is electrically connected with the edge processor, and the acquisition module is used for acquiring a to-be-analyzed image of the indication sticker and transmitting the to-be-analyzed image to the edge processor; and the edge processor is used for carrying out discharge detection on the to-be-analyzed image to obtain a reactor monitoring result. The technical problems that in the prior art, discharging monitoring is mainly carried out on the electric reactor through a discharging detection device, but the discharging phenomenon caused by slight defects cannot be monitored, and the operation reliability of the electric reactor is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor monitoring, and in particular to a reactor monitoring system. Background Art

[0002] Reactors are an important part of the power system and are frequently used to limit short-circuit current, absorb line reactive power, and prevent overvoltage from damaging the power grid. Dry-type reactors are divided into dry-type air-core reactors and dry-type iron-core reactors. When the insulation on the high-voltage coil of a dry-type iron-core reactor is damp or damaged and aged, it will cause a slight corona to be generated during the operation of the dry-type iron-core reactor. If it is not discovered in time, it will lead to further deterioration of the insulation and eventually a breakdown failure. Therefore, it is very important to monitor the discharge of dry-type iron-core reactors in real time.

[0003] At present, the existing technology mainly monitors the discharge of the reactor through a discharge detection device, but is unable to monitor the discharge phenomenon caused by slight defects, thereby reducing the reliability of the operation of the reactor. Summary of the invention

[0004] The present invention provides a reactor monitoring system, which solves the technical problem that the prior art mainly monitors the discharge of the reactor through a discharge detection device, but cannot monitor the discharge phenomenon caused by slight defects, thereby reducing the reliability of the operation of the reactor.

[0005] A first aspect of the present invention provides a reactor monitoring system, comprising a collection module, a plurality of indicator stickers and an edge processor;

[0006] The indicator sticker comprises an adhesive layer and a discharge monitoring layer, the entire adhesive layer is installed on the reactor to be tested, and the discharge monitoring layer is placed on the top of the adhesive layer;

[0007] A plurality of coating layers are arranged at equal intervals on the top of the discharge monitoring layer;

[0008] The acquisition module is electrically connected to the edge processor, and is used to acquire the image to be analyzed of the indicator sticker and transmit the image to be analyzed to the edge processor;

[0009] The edge processor is used to perform discharge detection on the image to be analyzed to obtain a reactor monitoring result.

[0010] Optionally, the reactor to be tested includes a core clamp, a lead-out connector and a plurality of windings;

[0011] The core clamp is provided with a plurality of cores at equal intervals, and the winding is sleeved on the cores;

[0012] The lead-out connectors are respectively provided at both ends of the winding, the adhesive layer is respectively provided at both ends of the winding, and the adhesive layer is located below the lead-out connectors.

[0013] Optionally, the reactor to be tested includes an iron core clamp and a plurality of windings;

[0014] The core clamp is provided with a plurality of cores at equal intervals, and the winding is sleeved on the cores;

[0015] The adhesive layers are respectively arranged at a first height position and a second height position of the winding.

[0016] Optionally, the edge processor includes a preprocessing module, a classification module, an extraction module and an analysis module;

[0017] The preprocessing module is used to perform image preprocessing on the image to be analyzed to obtain a plurality of feature images;

[0018] The classification module is used to perform clustering processing on each of the feature images using a clustering algorithm to obtain multiple target feature images;

[0019] The extraction module is used to perform color feature extraction operations on various target feature images respectively to obtain multiple color feature values;

[0020] The analysis module is used to process the difference between each of the color characteristic values ​​and a preset standard color characteristic value to obtain a plurality of first difference values;

[0021] Determine whether each of the first difference values ​​is less than a preset color difference threshold;

[0022] If each of the first differences is less than the color difference threshold, a reactor monitoring result indicating that no discharge occurs on the reactor surface is generated;

[0023] If any of the first differences is greater than or equal to the color difference threshold, a reactor monitoring result indicating discharge occurs on the surface of the reactor is generated.

[0024] Optionally, the preprocessing module includes a denoising unit and a segmentation unit;

[0025] The denoising unit is used to perform denoising processing on the image to be analyzed to obtain a target analysis image;

[0026] The segmentation unit is used to perform Canny edge detection on the target analysis image to obtain indicator patch edge information;

[0027] The target analysis image is segmented according to the edge information of the indicator sticker to obtain a plurality of feature images.

[0028] Optionally, the clustering algorithm is a K-means algorithm.

[0029] Optionally, the width of the indicator sticker is 20 mm.

[0030] Optionally, the surface of the discharge monitoring layer is covered with an ozone sensitive material.

[0031] Optionally, the ozone-sensitive material is blueberry proanthocyanidin.

[0032] Optionally, the coating layer is a polypropylene coating.

[0033] It can be seen from the above technical solutions that the present invention has the following advantages:

[0034] The system includes an acquisition module, a plurality of indicator stickers and an edge processor. The indicator stickers include an adhesive layer and a discharge monitoring layer. All adhesive layers are installed on the reactor to be tested, and the discharge monitoring layer is placed on the top of the adhesive layer. A plurality of coating layers are arranged at equal intervals on the top of the discharge monitoring layer. When the reactor to be tested discharges, ozone will be generated to react with the discharge monitoring layer of the indicator sticker, causing the discharge monitoring layer to change color, thereby realizing rapid discharge monitoring of the reactor to be tested. The technical problem that the existing technology mainly monitors the discharge of the reactor through the discharge detection device, but cannot monitor the discharge phenomenon caused by minor defects, thereby reducing the reliability of the operation of the reactor is overcome. Compared with the traditional discharge detection device, the present invention arranges a plurality of coating layers at equal intervals on the top of the discharge monitoring layer, so that the discharge monitoring layer below the coating layer will not change color when monitoring the discharge, thereby forming a contrast with the discharge monitoring layer that changes color, and can realize the monitoring of the discharge phenomenon caused by minor defects, thereby improving the reliability of the operation of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A schematic diagram of the structure of a reactor monitoring system according to an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of an indicator sticker according to an embodiment of the present invention;

[0038] The meanings of the reference numerals are as follows:

[0039] 1. Acquisition module; 2. Edge processor; 3. Indicator sticker; 4. Lead-out connector; 5. Core clamp; 6. Core; 7. Coating layer; 8. Adhesive layer; 9. Discharge monitoring layer; 10. Winding. DETAILED DESCRIPTION

[0040] The embodiment of the present invention provides a reactor monitoring system for solving the technical problem that the existing technology mainly monitors the discharge of the reactor through a discharge detection device, but cannot monitor the discharge phenomenon caused by slight defects, thereby reducing the reliability of the operation of the reactor.

[0041] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-Figure 2 , a reactor monitoring system provided by the present invention comprises a collection module 1, a plurality of indicator stickers 3 and an edge processor 2;

[0043] The indicator sticker 3 includes an adhesive layer 8 and a discharge monitoring layer 9. The entire adhesive layer 8 is installed on the reactor to be tested, and the discharge monitoring layer 9 is placed on the top of the adhesive layer 8.

[0044] A plurality of coating layers 7 are provided on the top of the discharge monitoring layer 9 at equal intervals;

[0045] The acquisition module 1 is electrically connected to the edge processor 2, and the acquisition module 1 is used to acquire the image to be analyzed of the indicator sticker 3 and transmit the image to be analyzed to the edge processor 2;

[0046] The edge processor 2 is used to perform discharge detection on the image to be analyzed to obtain the reactor monitoring result.

[0047] In an embodiment of the present invention, the system includes an acquisition module 1, a plurality of indicator stickers 3 and an edge processor 2. The indicator sticker 3 includes an adhesive layer 8 and a discharge monitoring layer 9, all of the adhesive layers 8 are arranged on the winding 10 of the reactor to be tested, and the discharge monitoring layer 9 is placed on the top of the adhesive layer 8 (the adhesive layer 8 and the discharge monitoring layer 9 are of the same size). A plurality of coating layers 7 are arranged at equal intervals on the top of the discharge monitoring layer 9, and the size of all the coating layers 7 and the discharge monitoring layer 9 accounts for 50%. The acquisition module 1 is electrically connected to the edge processor 2, and the acquisition module 1 is used to acquire the image to be analyzed of the indicator sticker 3 and transmit the image to be analyzed to the edge processor 2. The edge processor 2 is used to perform discharge detection on the image to be analyzed to obtain the monitoring result of the reactor.

[0048] It is worth mentioning that when the reactor to be tested has surface corona discharge, ozone will be generated where the indicator sticker 3 is set, and the discharge monitoring layer 9 will change color after detecting ozone, to indicate that the reactor to be tested has undergone surface corona discharge. A plurality of coating layers 7 are provided at equal intervals on the top of the discharge monitoring layer 9, and the coating layer 7 blocks and protects the discharge monitoring layer 9, preventing the discharge monitoring layer 9 under the coating layer 7 from changing color due to oxidation reaction with ozone, thereby contrasting with the discolored discharge monitoring layer 9, making the color change caused by some slight discharge easier to observe. For example, when the reactor monitoring system is out of power and the acquisition module 1 and the edge processor 2 cannot work, it is also possible to determine whether the reactor to be tested has undergone surface corona discharge by observing the color change of the indicator sticker 3.

[0049] It is worth mentioning that the reactor is a dry iron core reactor, the acquisition module 1 can be a camera, and the edge processor 2 can be a computer.

[0050] See also Figure 1 As shown, the reactor to be tested includes an iron core 6 clamp 5, a lead-out connector 4 and a plurality of windings 10; a plurality of iron cores 6 are arranged at equal intervals on the iron core 6 clamp 5, and the windings 10 are sleeved on the iron cores 6; lead-out connectors 4 are respectively arranged at both ends of the winding 10, and an adhesive layer 8 is respectively arranged at both ends of the winding 10, and the adhesive layer 8 is located below the lead-out connector 4.

[0051] In an embodiment of the present invention, when the reactor to be tested includes an iron core 6 clamp 5, a lead-out connector 4 and a plurality of windings 10, a plurality of iron cores 6 are arranged at equal intervals on the iron core 6 clamp 5, and the windings 10 are sleeved on the iron core 6. Lead-out connectors 4 are provided at both ends of the winding 10, respectively, and an adhesive layer 8 is sleeved on both ends of the winding 10, and the adhesive layer 8 is located below the lead-out connector 4. The operating status of the winding 10 can be monitored in real time. For example, when the reactor to be tested discharges, the indicator sticker 3 can sense the weak discharge phenomenon in time and make corresponding indications through its sensitive characteristics to ozone. This helps operation and maintenance personnel to promptly discover potential problems, avoid further expansion of faults, and ensure the safe and stable operation of the reactor.

[0052] It should be noted that the reactor to be tested includes a core 6 clamp 5 and multiple windings 10; multiple cores 6 are arranged on the core 6 clamp 5 at equal intervals, and the windings 10 are mounted on the cores 6; the adhesive layer 8 is respectively arranged at the first height position and the second height position of the winding 10.

[0053] In the embodiment of the present invention, when the reactor to be tested includes a core 6 clamp 5 and a plurality of windings 10, a plurality of cores 6 are arranged at equal intervals on the core 6 clamp 5, and the windings 10 are sleeved on the core 6. The adhesive layer 8 is arranged at 45% and 95% of the height of the winding 10, respectively.

[0054] It is worth mentioning that the electric field and magnetic field distribution inside the winding 10 are not uniform, and the adhesive layer 8 is respectively arranged at 45% and 95% of the height of the winding 10, which are usually areas where the electric field and magnetic field change more significantly. Due to the winding method and current distribution characteristics of the winding 10, electric field concentration may occur at about 45% of the height of the winding 10, and magnetic field distortion may exist at 95% due to proximity to the end. Setting the electrosensitive indicator sticker 3 at these two positions can more accurately capture the weak discharge of the reactor to be tested. If the adhesive layer 8 is set at a position where the height of the winding 10 is relatively low, the electromagnetic changes in the upper area of ​​the winding 10 may not be effectively monitored, and if it is set at a position that is too high, important information in the lower area may be ignored. The selection of the positions of 45% and 95% takes into account the monitoring needs of the upper and lower parts of the winding 10, and can more comprehensively reflect the overall electromagnetic state of the winding 10, thereby improving the accuracy and reliability of monitoring. The adhesive layer 8 is respectively arranged at 45% and 95% of the height of the winding 10 without damaging the insulation layer of the winding 10 or changing the integrity of the insulation structure. This is crucial for maintaining the insulation performance of the reactor, can prevent short circuits, leakage and other faults caused by insulation damage, and improve the operating safety and reliability of the reactor.

[0055] It should be noted that the edge processor 2 includes a preprocessing module, a classification module, an extraction module and an analysis module; the preprocessing module is used to perform image preprocessing on the image to be analyzed to obtain multiple feature images; the classification module is used to perform clustering processing on each feature image using a clustering algorithm to obtain multiple target feature images; the extraction module is used to perform color feature extraction operations on various target feature images respectively to obtain multiple color feature values; the analysis module is used to process the difference between each color feature value and a preset standard color feature value respectively to obtain multiple first difference values; it is determined whether each first difference value is less than a preset color difference threshold value; if each first difference value is less than the color difference threshold value, a reactor monitoring result indicating that no discharge occurs on the reactor surface is generated; if any first difference value is greater than or equal to the color difference threshold value, a reactor monitoring result indicating that discharge occurs on the reactor surface is generated.

[0056] In an embodiment of the present invention, the edge processor 2 includes a preprocessing module, a classification module, an extraction module and an analysis module, and the preprocessing module, the classification module, the extraction module and the analysis module are electrically connected. The preprocessing module is used to perform image preprocessing on the image to be analyzed (for example, denoising and histogram equalization operations are performed on the image to be analyzed in sequence) to obtain multiple feature images. The classification module is used to cluster each feature image using the K-means algorithm to obtain a variety of target feature images. The extraction module is used to perform color feature extraction operations on various target feature images to obtain a variety of color feature values. Among them, the color feature extraction operation process for the target feature image is specifically as follows: the color moment of each color channel (such as RGB or HSV) in the target feature image is calculated respectively. The color moment with the largest number is selected as the color feature value of the target feature image. The analysis module is used to process the difference between each color feature value and a preset standard color feature value (the standard color feature value refers to the color feature value of the partial discharge monitoring layer 9 of the coating layer 7) to obtain multiple first differences. Determine whether each first difference is less than a preset color difference threshold; if each first difference is less than the color difference threshold, generate a reactor monitoring result indicating no discharge on the reactor surface; if any first difference is greater than or equal to the color difference threshold, generate a reactor monitoring result indicating discharge on the reactor surface.

[0057] It is worth mentioning that the edge processor 2 can also be connected to the background terminal for communication. When the reactor monitoring result shows that discharge occurs on the surface of the reactor, an early warning signal is generated and sent to the background terminal.

[0058] It should be noted that the preprocessing module includes a denoising unit and a segmentation unit; the denoising unit is used to perform denoising on the image to be analyzed to obtain a target analysis image; the segmentation unit is used to perform Canny edge detection on the target analysis image to obtain edge information of the indicator sticker 3; the target analysis image is segmented according to the edge information of the indicator sticker 3 to obtain multiple feature images.

[0059] In the embodiment of the present invention, the preprocessing module includes a denoising unit and a segmentation unit. The denoising unit is used to perform a denoising operation on the image to be analyzed to obtain a target analysis image. The segmentation unit is used to perform Canny edge detection on the target analysis image to obtain edge information of the indicator sticker 3. The target analysis image is segmented based on the edge information of the indicator sticker 3 to obtain multiple feature images.

[0060] It is worth mentioning that the specific steps of Canny edge detection are: 1. Use a Gaussian filter to smooth the target analysis image to obtain a smooth analysis image. 2. Use the Sobel operator (or other gradient operators) to calculate the gradient strength and direction of the smooth analysis image. 3. Perform non-maximum suppression operation on the smooth analysis image based on the gradient strength and direction to obtain a first suppressed image. 4. Perform double threshold detection on the first suppressed image to obtain multiple weak edges of indicator stickers 3 and multiple strong edges of indicator stickers 3. 5. Check whether each weak edge of indicator sticker 3 is connected to the strong edge of indicator sticker 3. If the weak edge of indicator sticker 3 is connected to the strong edge of indicator sticker 3, the weak edge of indicator sticker 3 is retained. If the weak edge of indicator sticker 3 is not connected to the strong edge of indicator sticker 3, the weak edge of indicator sticker 3 is determined as the background. 6. Each weak edge of indicator sticker 3 and each strong edge of indicator sticker 3 are determined as the edge information of indicator sticker 3.

[0061] It should be noted that the clustering algorithm is the K-means algorithm.

[0062] It should be noted that the width of the indicator sticker 3 is 20 mm.

[0063] In the embodiment of the present invention, the width of the indicator sticker 3 is 20 mm, which is moderate, and does not occupy too much space due to being too large, nor is it too small to be difficult to identify, and is applicable to various types of reactors.

[0064] It should be noted that the surface of the discharge monitoring layer 9 is covered with an ozone sensitive material.

[0065] It should be noted that the ozone-sensitive material is bilberry proanthocyanidin.

[0066] In the embodiment of the present invention, the surface of the discharge monitoring layer 9 is covered with an ozone sensitive material, and the ozone sensitive material is bilberry proanthocyanidin (CAS: 84082-34-8).

[0067] It is worth mentioning that the ozone sensitive material can be diluted with water to a 1.5% solution, which can be applied or soaked on the discharge monitoring layer 9 and then dried, so that the ozone sensitive material covers the surface of the discharge monitoring layer 9.

[0068] It should be noted that the coating layer 7 is a polypropylene coating.

[0069] In the embodiment of the present invention, the coating layer 7 is a PP polypropylene coating. The high transparency and glossiness of the PP polypropylene coating can ensure that the color of the discharge monitoring layer 9 is accurately presented.

[0070] In an embodiment of the present invention, the system includes an acquisition module, a plurality of indicator stickers and an edge processor. The indicator sticker includes an adhesive layer and a discharge monitoring layer. All adhesive layers are installed on the reactor to be tested, and the discharge monitoring layer is placed on the top of the adhesive layer. A plurality of coating layers are provided at equal intervals on the top of the discharge monitoring layer. When the reactor to be tested discharges, ozone will be generated to react with the discharge monitoring layer of the indicator sticker, causing the discharge monitoring layer to change color, thereby realizing rapid discharge monitoring of the reactor to be tested. The technical problem that the existing technology mainly monitors the discharge of the reactor through the discharge detection device, but cannot monitor the discharge phenomenon caused by minor defects, thereby reducing the reliability of the operation of the reactor is overcome. Compared with the traditional discharge detection device, the present invention provides a plurality of coating layers at equal intervals on the top of the discharge monitoring layer, so that the discharge monitoring layer below the coating layer will not change color when monitoring the discharge, thereby forming a contrast with the discharge monitoring layer that changes color, and can realize the monitoring of the discharge phenomenon caused by minor defects, thereby improving the reliability of the operation of the reactor.

[0071] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0072] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reactor monitoring system, characterized in that: It includes a collection module, multiple indicator stickers and an edge processor; The indicator sticker comprises an adhesive layer and a discharge monitoring layer, the entire adhesive layer is installed on the reactor to be tested, and the discharge monitoring layer is placed on the top of the adhesive layer; A plurality of coating layers are arranged at equal intervals on the top of the discharge monitoring layer; The acquisition module is electrically connected to the edge processor, and is used to acquire the image to be analyzed of the indicator sticker and transmit the image to be analyzed to the edge processor; The edge processor is used to perform discharge detection on the image to be analyzed to obtain a reactor monitoring result.

2. The reactor monitoring system according to claim 1, characterized in that: The reactor to be tested comprises an iron core clamp, a lead-out connector and a plurality of windings; The core clamp is provided with a plurality of cores at equal intervals, and the winding is sleeved on the cores; The lead-out connectors are respectively provided at both ends of the winding, the adhesive layer is respectively provided at both ends of the winding, and the adhesive layer is located below the lead-out connectors.

3. The reactor monitoring system according to claim 1, characterized in that: The reactor to be tested comprises an iron core clamp and a plurality of windings; The core clamp is provided with a plurality of cores at equal intervals, and the winding is sleeved on the cores; The adhesive layers are respectively arranged at a first height position and a second height position of the winding.

4. The reactor monitoring system according to claim 1, characterized in that: The edge processor includes a preprocessing module, a classification module, an extraction module and an analysis module; The preprocessing module is used to perform image preprocessing on the image to be analyzed to obtain a plurality of feature images; The classification module is used to perform clustering processing on each of the feature images using a clustering algorithm to obtain multiple target feature images; The extraction module is used to perform color feature extraction operations on various target feature images respectively to obtain multiple color feature values; The analysis module is used to process the difference between each of the color characteristic values ​​and a preset standard color characteristic value to obtain a plurality of first difference values; Determine whether each of the first difference values ​​is less than a preset color difference threshold; If each of the first differences is less than the color difference threshold, a reactor monitoring result indicating that no discharge occurs on the reactor surface is generated; If any of the first differences is greater than or equal to the color difference threshold, a reactor monitoring result indicating discharge occurs on the surface of the reactor is generated.

5. The reactor monitoring system according to claim 4, characterized in that: The preprocessing module includes a denoising unit and a segmentation unit; The denoising unit is used to perform denoising processing on the image to be analyzed to obtain a target analysis image; The segmentation unit is used to perform Canny edge detection on the target analysis image to obtain indicator patch edge information; The target analysis image is segmented according to the edge information of the indicator sticker to obtain a plurality of feature images.

6. The reactor monitoring system according to claim 4, characterized in that: The clustering algorithm is the K-means algorithm.

7. The reactor monitoring system according to claim 1, characterized in that: The width of the indicator sticker is 20 mm.

8. The reactor monitoring system according to claim 1, characterized in that: The surface of the discharge monitoring layer is covered with ozone sensitive material.

9. The reactor monitoring system according to claim 8, characterized in that: The ozone sensitive material is bilberry proanthocyanidin.

10. The reactor monitoring system according to claim 1, characterized in that: The coating layer is a polypropylene coating.

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