Hydraulic power plant relay protection pressing plate on-off recording method and hydraulic power plant relay protection pressing plate on-off recording system
Through image acquisition and recognition technology, the status of the relay protection plate of the hydropower plant is automatically identified, forming a return record and uploading it to the server, solving the problem of time-consuming, labor-intensive and poor reliability of manual verification, and achieving efficient and reliable platen state management.
Patent Information
- Application Number
- CN202510379498.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-07-11
AI Technical Summary
Manually checking the relay protection voltage plates in hydropower plants is time-consuming and labor-intensive, inefficient and poor reliability.
Image acquisition and recognition technology are used to identify the position and contiguous state of the protective plate, forming a drop-out record and uploading it to the server, and staff queries the status of the plate through the server.
It reduces the workload of staff, avoids mistakes caused by human negligence, and improves verification efficiency and reliability.
Smart Images
Figure CN120297906A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power system protection, and in particular to a method for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant and a system for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant based on the method for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant. Background Art
[0002] As Figure 1 shown, in a power system, the insertion and withdrawal of the protection pressure plate 1 on a relay protection device determines the on-off state of a circuit, and the insertion position and withdrawal position of the protection pressure plate 1 are based on the position of the connecting piece 3 on the base 2 of the protection pressure plate 1. Among them, when the connecting piece 3 is in the closed position, that is, when the connecting piece 3 is vertical, the protection pressure plate 1 is in the inserted state, and when the connecting piece 3 is in the open position, that is, when the connecting piece 3 is inclined, the protection pressure plate 1 is in the withdrawn state.
[0003] When working inside a hydropower plant, it is necessary to manually insert and withdraw some protection pressure plates 1 of the relay protection device. The connection method of the protection pressure plate 1 should be accurate to avoid serious consequences caused by the incorrect operation of the relay protection device. Before the insertion and withdrawal, the staff needs to check the state of the protection pressure plate 1. Since there are many relay protection devices in the hydropower plant and the number of protection pressure plates 1 is huge, manual checking is not only time-consuming and laborious, with low efficiency, but also misjudgment or omission often occurs, and the reliability is not good. Summary of the Invention
[0004] Aiming at the deficiencies in the prior art, the present invention provides a method for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant and a system for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant based on the method for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant, which solves the problems of time-consuming, laborious, low efficiency and poor reliability in manually checking the insertion and withdrawal states of protection pressure plates in the prior art.
[0005] According to an embodiment of the present invention, a method for recording the insertion and withdrawal of relay protection pressure plates in a hydropower plant includes the following steps
[0006] S1. Set an image acquisition area according to the position of the protection pressure plate on the relay protection device;
[0007] S2. Acquire an image in the image acquisition area set in step S1;
[0008] S3. Identify the content of the image acquired in step S2. First, identify the position and arrangement order of each protection pressure plate, then identify the position of the connecting piece in each protection pressure plate and whether it is in an inclined state, and determine the insertion and withdrawal state of the protection pressure plate according to whether the connecting piece is in an inclined state;
[0009] S4. According to the content identified in step S3, correspond the position where each protection pressure plate is located and its insertion and withdrawal state, form a record of the insertion and withdrawal of the protection pressure plate and upload it to the server;
[0010] S5. In the server, sort according to the positions of the protection pressure plates on the relay protection device, and display the corresponding input / output states of the protection pressure plates according to the input / output records.
[0011] On the other hand, according to an embodiment of the present invention, there is also provided a system for recording the input / output of relay protection pressure plates in a hydropower plant, including an image collector, a memory, and a processor. The image collector is used to collect an image of an image collection area set on the relay protection device and send it to the memory. The memory stores a computer program that can run on the processor. When the processor executes the computer program, the above-mentioned method for recording the input / output of relay protection pressure plates in a hydropower plant is implemented.
[0012] Compared with the prior art, the present invention has the following beneficial effects: By collecting images of the protection pressure plates on the relay protection device and using image recognition technology to identify the positions, arrangement order of the protection pressure plates, the positions of the connecting pieces in the protection pressure plates, and whether the connecting pieces are in an inclined state, the input / output state of the corresponding protection pressure plate is determined according to whether the connecting piece in the protection pressure plate is in an inclined state, and the positions of each protection pressure plate and its input / output state are correspondingly formed into an input / output record and uploaded to the server. In the server, sort according to the positions of the protection pressure plates on the relay protection device and display the input / output states of the corresponding protection pressure plates, which is convenient for the staff to query the input / output states of the protection pressure plates of the corresponding relay protection device in the server. It solves the technical problems of time-consuming, laborious, low efficiency and poor reliability in manually checking the input / output states of the protection pressure plates, produces the technical effects of reducing the workload of the staff, avoiding errors caused by human negligence, and effectively simplifies the operation process of the staff for relay protection equipment, which is beneficial to improving work efficiency. Description of the Drawings
[0013] Figure 1 It is a partial structural schematic diagram of a relay protection device in the prior art;
[0014] Figure 2 It is a step diagram of the method for recording the input / output of relay protection pressure plates in a hydropower plant according to an embodiment of the present invention;
[0015] Figure 3 It is a structural schematic diagram of a system for recording the input / output of relay protection pressure plates in a hydropower plant according to an embodiment of the present invention.
[0016] In the above-mentioned drawings: 1. Protection pressure plate; 2. Base; 3. Connecting piece; 4. Image collector; 5. Memory; 6. Processor; 7. Trigger switch; 8. Alarm. Detailed Embodiments
[0017] The technical solutions in the present invention will be further described below in conjunction with the drawings and embodiments.
[0018] As Figure 2 shown, an embodiment of the present invention proposes a method for recording the switching-on and switching-off of relay protection pressure plates in a hydropower plant, including the following steps:
[0019] S1. Set an image acquisition area according to the positions of the protection pressure plates on the relay protection device.
[0020] In step S1, an image acquisition area is set according to the positions of the protection pressure plates on the relay protection device, so that the protection pressure plates on the relay protection device are respectively located within the image acquisition area.
[0021] S2. Acquire the images in the image acquisition area set in step S1.
[0022] In step S2, images are acquired according to the image acquisition area set in step S1 to ensure that images of each protection pressure plate on the relay protection device are obtained and omissions are avoided.
[0023] S3. Identify the content of the images acquired in step S2. First, identify the positions and arrangement order of each protection pressure plate, then identify the positions of the connecting pieces in each protection pressure plate and whether they are in an inclined state, and determine the switching-on and switching-off states of the protection pressure plates according to whether the connecting pieces are in an inclined state.
[0024] In step S3, image recognition technology is used to identify the images obtained in step S2. First, identify the positions of each protection pressure plate in the image and the arrangement order of the protection pressure plates on the relay protection device to determine the number and positions of the protection pressure plates in the image. Then, identify the positions of the connecting pieces in each protection pressure plate and determine whether the connecting pieces are in an inclined state. Furthermore, determine the switching-on and switching-off states of the protection pressure plates according to whether the connecting pieces are in an inclined state, that is, when the connecting piece is in the closed position, i.e., the connecting piece is vertical, the protection pressure plate is in the switched-on state, and when the connecting piece is in the open position, i.e., the connecting piece is inclined, the protection pressure plate is in the switched-off state.
[0025] S4. According to the content identified in step S3, correspond the positions of each protection pressure plate with their switching-on and switching-off states, form a record of the switching-on and switching-off of the protection pressure plates, and upload it to the server.
[0026] In step S4, the recognition results of the switching-on and switching-off states of the protection pressure plates in step S3 are corresponded with the position information of the protection pressure plates, thereby forming a record of the switching-on and switching-off of the protection pressure plates. The record of the switching-on and switching-off records the switching-on and switching-off states of the protection pressure plates at the corresponding positions on the relay protection device, and after the record of the switching-on and switching-off is formed, it is uploaded to the server.
[0027] S5. In the server, sort according to the positions of the protection pressure plates on the relay protection device, and display the corresponding switching-on and switching-off states of the protection pressure plates according to the record of the switching-on and switching-off.
[0028] In step S5, after receiving the connection / disconnection record, the server sorts the protection pressure plates according to the position information of the protection pressure plates in the connection / disconnection record, so that the arrangement of the protection pressure plates when displayed is the same as their arrangement on the relay protection device. At the same time, according to the connection / disconnection status of the protection pressure plates in the connection / disconnection record, it is indicated whether the protection pressure plates are in the connected state or the disconnected state, so that the staff can conveniently obtain the connection / disconnection status of the protection pressure plates in the corresponding relay protection device by querying the connection / disconnection record in the server, without manual confirmation, effectively reducing the workload of the staff and avoiding errors caused by human negligence. At the same time, it also simplifies the operation process of the staff for the relay protection device, which is conducive to improving work efficiency.
[0029] In this embodiment, in order to improve the accuracy of image acquisition, in step S2, more than two images of the image acquisition area are acquired at one time; before step S3, there is also step S30 of comparing more than two images of the same image acquisition area acquired in step S2. If each image is exactly the same, any one is selected for recognition and the other images are deleted. If the images are not exactly the same, the images of the image acquisition area are acquired again. When acquiring the images of the image acquisition area in step S2, multiple images of the image acquisition area are acquired at one time for comparison. When the acquired multiple images are inconsistent, it can be judged that the image acquisition area is blocked or some images are unclear during the image acquisition process. At this time, the images of the image acquisition area need to be acquired again for comparison. When the acquired multiple images are consistent, it means that the acquired images are valid. Any one can be selected for recognition and the other images are deleted to avoid interference.
[0030] In this embodiment, step S3 includes step S31 of performing image processing on the images acquired in step S2 and performing morphological feature analysis to determine the number and arrangement order of the protection pressure plates in the images, and comparing the number and arrangement order of the protection pressure plates in the recognized images with the number and arrangement order of the protection pressure plates in the image acquisition area. If the comparison result is consistent, the identification of the connecting strips is performed. If the comparison result is inconsistent, the images acquired in step S2 are reprocessed and morphologically analyzed. By performing morphological feature analysis after image processing on the images acquired in step S2, the recognition accuracy can be improved, and the recognition result can be verified by comparing the number and arrangement order of the protection pressure plates recognized in the images with the number and arrangement order of the protection pressure plates in the set image acquisition area respectively. If the comparison result is consistent, it means that the image recognition result is consistent with the actual situation of the relay protection device, and the identification of the connecting strips can be continued. If the comparison result is inconsistent, it means that the image recognition result is inaccurate and needs to be reprocessed and morphologically analyzed, so as to improve the reliability of the recognition result.
[0031] Further, after step S31, steps S32 are further included: segment the image processed in step S31 to obtain individual protection pressure plate images, extract the contiguous images in the individual protection pressure plate images to obtain contiguous images, and compare the contiguous images with the images of the contiguous when in the closed position and the images of the contiguous when in the open position preset respectively, so as to determine whether the contiguous is in an inclined state. After the image in step S31 is recognized, in step S32, the processed image is segmented to obtain the image of the individual protection pressure plate, and the contiguous image in the individual protection pressure plate image is extracted according to the contiguous recognized in step S31, and then the extracted contiguous image is compared with the image of the contiguous when in the closed position and the image of the contiguous when in the open position preset respectively. When the contiguous image is consistent with the image of the contiguous when in the closed position preset, the contiguous in the contiguous image is in a vertical state, and the corresponding protection pressure plate is in the input state. When the contiguous image is consistent with the image of the contiguous when in the open position preset, the contiguous in the contiguous image is in an inclined state, and the corresponding protection pressure plate is in the withdrawn state, so as to realize the judgment of the input and withdrawal states of the protection pressure plate.
[0032] Further, after step S32, steps S33 are further included: according to the comparison result of the contiguous image in step S32, splice the positions and whether they are in an inclined state of the contiguous corresponding to the image of the contiguous when in the closed position and the image of the contiguous when in the open position preset to obtain a comparison result image; step S4 further includes uploading the comparison result image to the server. After determining whether the contiguous is in an inclined state by comparing the contiguous image with the image of the contiguous when in the closed position and the image of the contiguous when in the open position preset respectively in step S32, the image of the contiguous when in the closed position and the image of the contiguous when in the open position preset are spliced according to the comparison result. When the contiguous is in a vertical state, the image of the contiguous when in the closed position preset is set at the position of the protection pressure plate corresponding to the contiguous. When the contiguous is in an inclined state, the image of the contiguous when in the open position preset is set at the position of the protection pressure plate corresponding to the contiguous, so as to obtain a clear comparison result image and upload the comparison result image to the server in step S4 for the staff to check.
[0033] In this embodiment, after step S4, steps S41 are further included. A database is established to store the preset information of the protected circuit corresponding to the on / off state of the protection pressure plate on the relay protection device. The on / off record of the protection pressure plate obtained in step S4 is compared with the preset information. If the on / off state of the protection pressure plate is inconsistent, an alarm is issued in the server. In step S41, by comparing the on / off record of the protection pressure plate obtained in step S4 with the preset information, the on / off state of the protection pressure plate is associated with the protected line, and it is judged whether the target protected circuit is protected after the operator operates the protection pressure plate. When the protected circuit is not protected due to the operator's misoperation, an alarm is issued to prompt the operator to handle it, reducing equipment failures.
[0034] In this embodiment, after step S5, steps S51 are further included. In the server, the on / off record received this time is compared with the on / off record received last time. If the two on / off records are inconsistent, it is determined that the protection pressure plate has been operated, and an operation record of the protection pressure plate is formed according to the comparison result and stored in the server. In step S51, by comparing the two on / off records, the protection pressure plate operated by the operator this time can be judged, and then an operation record of the protection pressure plate is formed and stored in the server for subsequent reference.
[0035] As Figure 3 shown, on the other hand, the embodiment of the present invention further provides a system for recording the on / off of the relay protection pressure plate in a hydropower plant, including an image collector 4, a memory 5, and a processor 6. The image collector 4 is used to collect the image of the image collection area set on the relay protection device and send it to the memory 5. The memory 5 stores a computer program that can run on the processor 6. When the processor 6 executes the computer program, the above-mentioned method for recording the on / off of the relay protection pressure plate in a hydropower plant is realized.
[0036] Specifically, the system for recording the on / off of the relay protection pressure plate in a hydropower plant provided in this embodiment collects the image of the image collection area through the image collector 4 and sends the collected image to the storage. When the processor 6 executes the computer program stored in the storage, the above-mentioned method for recording the on / off of the relay protection pressure plate in a hydropower plant is used to perform image recognition on the image in the storage, and an on / off record is formed according to the image recognition result and uploaded to the server.
[0037] Further, it further includes a trigger switch 7, and the trigger switch 7 is arranged on the cabinet door of the relay protection device and electrically connected to the image collector 4. By arranging the trigger switch 7 on the cabinet door of the relay protection device, after the staff opens the cabinet door to operate the protection pressure plate on the relay protection device and then closes the cabinet door, it can be determined by the trigger switch 7 that the staff has performed an operation on the protection pressure plate once. At this time, after receiving the signal of the trigger switch 7, the image collector 4 performs image acquisition and the processor 6 executes a computer program to identify the image, so as to obtain the switching-on and switching-off records of the protection pressure plate operated by the staff each time.
[0038] Further, it further includes an alarm 8, and the alarm 8 is electrically connected to the processor 6. The alarm 8 is arranged to give an alarm when the processor 6 determines that the target protected circuit is not protected after the staff operates the protection pressure plate, so as to ensure that the staff can handle it in time and avoid the occurrence of faults.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.
Claims
1. A method for recording the input and withdrawal of relay protection pressure plates in a hydropower plant, characterized in that: It includes the following steps: S1. Set the image acquisition area according to the positions of the protection pressure plates on the relay protection device; S2. Acquire the images in the image acquisition area set in step S1; S3. Identify the content of the images acquired in step S2. First, identify the positions and arrangement order of each protection pressure plate, then identify the positions of the shunts in each protection pressure plate and whether they are in an inclined state, and determine the input and withdrawal states of the protection pressure plates according to whether the shunts are in an inclined state; S4. According to the content identified in step S3, correspond the positions where each protection pressure plate is located and its input and withdrawal states, form an input and withdrawal record of the protection pressure plates and upload it to the server; S5. In the server, sort according to the positions of the protection pressure plates on the relay protection device, and display the corresponding input and withdrawal states of the protection pressure plates according to the input and withdrawal records.
2. The method for recording the input and withdrawal of relay protection pressure plates in a hydropower plant according to claim 1, wherein: In step S2, acquire more than two images of the image acquisition area at one time; before step S3, there is also step S30. Compare the more than two images of the same image acquisition area acquired in step S2 at one time. If each image is completely consistent, randomly select one for identification and delete the other images. If the images are not completely consistent, re-acquire the images of the image acquisition area.
3. A method for recording the enabling and disabling of relay protection pressure plates in a hydropower plant according to claim 1, characterized in that: Step S3 includes step S31. Perform image processing on the images acquired in step S2 and conduct morphological feature analysis to determine the number and arrangement order of the protection pressure plates in the images, and compare the number and arrangement order of the protection pressure plates identified in the images with the number and arrangement order of the protection pressure plates in the image acquisition area. If the comparison results are consistent, conduct the identification of the shunts. If the comparison results are inconsistent, re-perform image processing and morphological feature analysis on the images acquired in step S2.
4. The method for recording the input and withdrawal of relay protection pressure plates in a hydropower plant according to claim 3, characterized in that: After step S31, there is also step S32. Segment the images processed in step S31 to obtain single protection pressure plate images, extract the shunt images in the single protection pressure plate images to obtain shunt images, and compare the shunt images with the images when the shunts are in the closed position and the images when the shunts are in the open position preset respectively, so as to judge whether the shunts are in an inclined state.
5. A method for recording the energization and de-energization of relay protection pressure plates in a hydropower plant, characterized in that: After step S32, there is also step S33. According to the comparison results of the shunt images in step S32, splice the positions and whether they are in an inclined state of the images when the shunts are in the closed position and the images when the shunts are in the open position preset corresponding to the shunts to obtain a comparison result image; step S4 also includes uploading the comparison result image to the server.
6. The method for recording the enabling and disabling of relay protection pressure plates in a hydropower plant according to claim 1, characterized in that: After step S4, there is also step S41. Establish a database to store the preset information of the protected circuits corresponding to the input and withdrawal states of the protection pressure plates on the relay protection device, compare the protection pressure plate input and withdrawal records obtained in step S4 with the preset information, and if the input and withdrawal states of the protection pressure plates are inconsistent, an alarm will be issued in the server.
7. The method for recording the input and withdrawal of relay protection pressure plates in a hydropower plant according to claim 1, characterized in that: After step S5, there is also step S51. In the server, compare the input and withdrawal record received this time with the input and withdrawal record received last time. If the two input and withdrawal records are inconsistent, it is determined that the protection pressure plate has been operated, and an operation record of the protection pressure plate is formed according to the comparison results and stored in the server.
8. A relay protection pressure plate input / output record system for a hydropower plant, characterized in that: It includes an image collector, a memory, and a processor. The image collector is used to collect images of the image collection area set in the relay protection device and send them to the memory. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the method for recording the switching-on and switching-off of the relay protection pressure plate in a hydropower plant according to any one of claims 1 to 7.
9. The relay protection pressure plate input / output recording system of a hydropower plant according to claim 8, characterized in that: It further includes a trigger switch, which is arranged on the cabinet door of the relay protection device and is electrically connected to the image collector.
10. A relay protection pressure plate input / output record system for a hydropower plant according to claim 8, characterized in that: It further includes an alarm, which is electrically connected to the processor.