CN110940899A - Air gap discharge shooting device, path identification method, computer and medium - Google Patents
Air gap discharge shooting device, path identification method, computer and medium Download PDFInfo
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- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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Abstract
An air gap discharge camera comprising: two support columns for fixing the suspension conductor; the two electrodes form a gas discharge gap between the two electrodes, the suspension conductor is positioned in the gas discharge gap, a gas discharge process is realized by applying high voltage to the gas discharge gap, and a discharge path is obtained; a plane mirror for obtaining a mirror image of the discharge path; and the high-speed camera and the plane mirror are respectively positioned on two sides of a plane formed by a straight line where the two electrodes are positioned and a straight line where the central points of the two support columns are positioned, and the discharge path is shot and discharged through the high-speed camera. The invention also provides a path identification method, a computer and a medium. The invention can completely, accurately and timely observe the discharge development process and the discharge path.
Description
Technical Field
The invention relates to the technical field of gas discharge, in particular to an air gap discharge shooting device, a path identification method, a computer and a medium.
Background
Air is the cheapest insulating material and has extremely wide application in the field of high-voltage external insulation. The research on the gas discharge process can be directly used for the design of the external insulation device, so that the experiment observation of the gas discharge process and the perfection of the gas discharge theory have great significance on the high-voltage external insulation design. Because gas discharge is a discharge process developed in a three-dimensional space, if comprehensive information of the discharge process needs to be obtained, spatial multi-angle simultaneous observation needs to be carried out. In particular, when an opaque object, such as an insulation or a conductor, is disposed in the discharge gap, the discharge path may directly penetrate the object or may bypass the object in all directions, and the discharge process cannot be observed completely by only one camera. The observation by a plurality of cameras increases the cost and is difficult to realize synchronous observation. Therefore, it is necessary to provide an air gap discharge shooting device to solve one or more of the above problems.
Disclosure of Invention
In view of the above, there is a need for an air gap discharge imaging device, a path identification device, a computer and a medium, which can completely, accurately and timely observe the discharge process and the discharge path.
A first aspect of the present application provides an air gap discharge camera, the apparatus comprising:
two support columns for fixing the suspension conductor;
the two electrodes form a gas discharge gap between the two electrodes, the suspension conductor is positioned in the gas discharge gap, a gas discharge process is realized by applying high voltage to the gas discharge gap, and a discharge path is obtained;
a plane mirror for obtaining a mirror image of the discharge path;
and the high-speed camera and the plane mirror are respectively positioned on two sides of a plane formed by a straight line where the two electrodes are positioned and a straight line where the central points of the two support columns are positioned, and the discharge path is shot and discharged through the high-speed camera.
Preferably, the two electrodes are in line with the floating conductor.
Preferably, the high speed camera is adapted to record an object image of the discharge path during the gas discharge, while also recording a mirror image of the discharge path during the reflection of the gas discharge from the flat mirror.
Preferably, a preset angle exists between a connecting line of center points of the high-speed camera and the object image of the discharge path and a connecting line of center points of the high-speed camera and the mirror image of the discharge path, so that the mirror image of the discharge path shot by the high-speed camera is not overlapped with the object image of the discharge path.
A third aspect of the present application provides a path identification method, including:
receiving a first image shot by a high-speed camera in a low-illumination mode, wherein the first image is shot when a suspension conductor is in a static state and a gas discharge gap is not discharged;
marking the position of the suspended conductor in the first image;
receiving a second image shot by the high-speed camera in the gas discharge process, wherein the second image comprises two discharge paths;
marking the position of the suspended conductor in the second image according to the position of the suspended conductor marked by the first image; and
analyzing the discharge path in the second image after marking.
Preferably, the two discharge paths include an object image of the discharge path during gas discharge taken by the high-speed camera and a mirror image of the discharge path during gas discharge reflected from a plane mirror taken simultaneously during gas discharge effected in response to application of a high voltage to the gas discharge gap.
Preferably, the analyzing the discharge path in the second image after marking comprises:
when at least one complete discharge path exists in the two discharge paths, confirming that the discharge path does not penetrate through the suspension conductor;
and when the two discharge paths are not complete, confirming that the discharge paths penetrate through the suspension conductor.
Preferably, when at least one complete discharge path exists in the two discharge paths, confirming that the discharge path does not penetrate through the floating conductor comprises:
confirming that the discharge path bypasses from the front or the back of the floating conductor when a complete discharge path exists in the two discharge paths and a rectangular frame marking the position of the floating conductor is positioned on the discharge path;
when both the two discharge paths are complete discharge paths and a rectangular frame marking the position of the floating conductor is positioned on one side of the discharge path, it is confirmed that the discharge path bypasses the side of the floating conductor.
A third aspect of the application provides a computer apparatus comprising a processor for implementing the path identification method when executing a computer program stored in a memory.
A fourth aspect of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the path recognition method.
The air gap discharge shooting device provided by the invention uses a high-speed camera and a plane mirror to form an optical observation system, and records the mirror image of a discharge path through the plane mirror, so that the gas discharge development process can be completely observed when the focal length of a lens of the high-speed camera is longer. Further, since the optical path propagates at the speed of light during imaging, it can be considered that the mirror image of the discharge path recorded in the same frame of the high-speed camera appears in synchronization with the object image of the discharge path. Therefore, the discharge development process and the discharge path are observed completely, accurately and timely. Not only reduces the cost, but also realizes the synchronous observation of the mirror image and the object image of the discharge path.
Drawings
Fig. 1 is a structural diagram of an air gap discharge imaging apparatus according to a first embodiment of the present invention.
Fig. 2 is a flowchart of a path identification method according to a second embodiment of the present invention.
Fig. 3A and 3B are schematic diagrams of the discharge path of the present invention that laterally bypasses the floating conductor.
Fig. 4A and 4B are schematic views of the discharge path of the back-side-by-suspension conductor of the present invention.
Fig. 5A and 5B are schematic diagrams of the discharge path through the floating conductor of the present invention.
Fig. 6 is a schematic diagram of a computer device according to a third embodiment of the present invention.
Fig. 7 is a block diagram of a path recognition system provided by the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
Fig. 1 is a structural diagram of an air gap discharge imaging apparatus according to a first embodiment of the present invention.
In the present embodiment, the air gap discharge imaging apparatus 1 includes a plane mirror 10, a high-speed camera 11, two support columns 12, two electrodes 13, and a floating conductor 14.
In this embodiment, the support posts 12 are used to secure the floating conductor 14. For example, the suspension conductors 14 are fixed to the two pillars 12 by ropes. Preferably, the floating conductor 14 is an opaque conductor. Such as copper, iron, etc.
In the present embodiment, one of the two electrodes 13 is connected to a power supply, and the other is grounded. A gas discharge gap may be formed between the two electrodes 13. The gas discharge process is observed by applying a high voltage to the gas discharge gap, and the discharge path during the discharge process is photographed by the high-speed camera 11.
In this embodiment, the two electrodes 13 and the floating conductor 14 are located on a straight line. I.e. the straight line of the two electrodes 13 and the floating conductor 14 is parallel to the pillar 12. It is thus possible to determine whether the discharge path breaks down the floating conductor 14 during the gas discharge.
In this embodiment, the high-speed cameras 14 and the plane mirrors 10 are respectively located on two sides of a plane formed by a straight line where the two electrodes 13 are located and a straight line where center points of the two support columns 12 are located. As can be seen from the principles of geometric optics imaging, the plane mirror 10 has the function of extending the position of the object. For a field with limited shooting space, by providing a flat mirror 10, a mirror image of the discharge path in the flat mirror 10 can be obtained. The high-speed camera 11 can record the object image of the discharge path in the gas discharge process and record the mirror image of the discharge path reflected from the plane mirror 10, thereby achieving the purpose of completely observing the discharge path when the focal length of the lens is long. Moreover, since the optical path propagates at the speed of light during imaging, even if the process of variation is in the order of μ s, it can be considered that the mirror image of the discharge path recorded in the same frame of the high-speed camera 11 appears in synchronization with the object image, and the time error of the observation process can be ignored.
In this embodiment, in order for the high-speed camera 11 to record the object image and the mirror image of the discharge path at the same time, it is necessary to adjust the angle at which the high-speed camera 11 photographs the gas discharge gap and the angle between the flat mirror 10 and the gas discharge gap. Until the mirror image of the discharge path and the two discharge channels present in the object image can be completely recorded at the same time. When the high-speed camera 11 captures a gas discharge process, the high-speed camera 11 is set to an auto-trigger mode. For example, at the moment when a high voltage is applied, the high-speed camera 11 is automatically turned on under the strong light generated by the gas discharge gap.
In this embodiment, a preset angle exists between a connecting line of center points of the object image of the high-speed camera and the discharge path and a connecting line of center points of the mirror image of the high-speed camera and the discharge path, and the preset angle is not zero. Thus, the mirror image of the discharge path shot by the high-speed camera and the object image of the discharge path are not overlapped, so that the two discharge paths are prevented from interfering with each other. The high-speed camera can select the shooting speed of more than 50 ten thousand frames and the corresponding exposure time, continuously shoot in a normal mode, and completely record the discharge development process under the impact voltage. And the discharge path is analyzed from the recorded image. For example, the high-speed camera sends the image to the computer device 2, which analyzes the discharge path from the received image.
In this embodiment, when the air gap discharge photographing device is used:
the discharge electrode, the floating conductor, and the high-speed camera are arranged. If the field is small, the arrangement needs to be careful that the distance between the high-speed camera and the gas discharge gap is enlarged as much as possible under the condition of ensuring the insulation safety so as to completely shoot the discharge path as much as possible.
Parameters of the high-speed camera are adjusted and plane mirrors are arranged. And selecting a proper focal length for the high-speed camera according to the field condition, and selecting a large aperture. A preset angle exists between a connecting line of central points of the high-speed camera and the object image of the discharge path and a connecting line of central points of the high-speed camera and the mirror image of the discharge path, so that the mirror image of the discharge path shot by the high-speed camera is not overlapped with the object image of the discharge path, and the two discharge paths are prevented from interfering with each other. As shown in fig. 1, taking the high-speed camera as a point O, the center point of the object image of the discharge path is a, and the center point of the mirror image of the discharge path is B. The high-speed camera and the object image of the discharge path have a central point connecting line of lOAThe connection line of the central points of the high-speed camera and the mirror image of the discharge path is lOBThe preset angle theta is lOAAnd lOBThe angle therebetween. The preset angle is not zero.
Setting a high-speed camera to be in a low light (low light) mode, shooting a first image when the suspension conductor is in a static state and the gas discharge gap is not discharged, and marking the position of the suspension conductor in the first image. In this embodiment, the position of the suspended conductor in the first image is marked by a rectangular frame.
And closing the low illumination mode of the high-speed camera, and opening the normal shooting mode of the high-speed camera. And adjusting the shooting parameters of the high-speed camera, and selecting a shooting speed of more than 50 ten thousand frames and corresponding exposure time. In response to applying a high voltage to the gas discharge gap, a second image is automatically and continuously taken of the discharge process under the intense light generated by the gas discharge gap, and the complete discharge development process under the impulse voltage is recorded.
Identifying a discharge path in the second image. Specifically, the second image includes two discharge paths, one is a path corresponding to a mirror image of the discharge path reflected by the plane mirror, and the other is a path corresponding to an object image of the discharge path photographed by the high-speed camera. In this embodiment, the second image sensitivity is increased to make the path corresponding to the mirror image of the discharge path in the second image more prominent, and the right wider and longer discharge path in fig. 3B is the mirror image of the discharge path. And simultaneously judging whether two paths corresponding to the mirror image of the discharge path and the object image of the discharge path are interrupted or not. When at least one complete discharge path exists in the two paths, the discharge path is confirmed to bypass the suspension conductor; and when the two paths are not complete, confirming that the discharge path penetrates through the suspension conductor.
Specifically, when the two paths emit light completely, it is determined that neither path is interrupted by the floating conductor, which indicates that the discharge path passes through the side of the floating conductor, i.e., bypasses the floating conductor; when one of the two paths is not complete in light emission, the discharge path is bypassed from the front or the back of the suspension conductor; when the two paths are not complete in light emitting, the discharge path penetrates through the suspension conductor. The specific path identification method is shown in fig. 2.
Example two
Fig. 2 is a flowchart of a path identification method according to a second embodiment of the present invention. The order of the steps in the flow chart may be changed and some steps may be omitted according to different needs. For convenience of explanation, only portions related to the embodiments of the present invention are shown.
Preferably, the path recognition method of the present invention is applied in one or more computer devices. The computer device is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and the hardware thereof includes, but is not limited to, a processor, an external storage medium, a memory, and the like.
The computer device may be, but is not limited to, a desktop computer, a notebook computer, a cloud server, a smart phone, and the like. The computer device can be in man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch panel, gesture recognition equipment, voice control equipment and the like.
As shown in fig. 2, the path identification method specifically includes the following steps:
step S1: and receiving a first image shot by a high-speed camera in a low-illumination mode, wherein the first image is the first image when the suspension conductor is in a static state and the gas discharge gap is not discharged.
In an embodiment of the present invention, the high-speed camera is set to a low light (low light) mode, a first image when the floating conductor is in a static state and the gas discharge gap is not discharged is captured, and the first image is sent to the computer device.
Step S2: the position of the suspended conductor is marked in the first image.
In this embodiment, the position of the floating conductor in the first image may be marked by a rectangular frame. In order to facilitate the subsequent analysis of whether the discharge path intersects the floating conductor, the position of the floating conductor in the first image may be marked as a reference position for identifying the position of the floating conductor in the image captured during the discharge.
Step S3: and receiving a second image shot by the high-speed camera in the gas discharge process, wherein the second image comprises two discharge paths.
In this embodiment, the low illumination mode of the high-speed camera is turned off, and the normal shooting mode of the high-speed camera is turned on. And adjusting the shooting parameters of the high-speed camera, and selecting a shooting speed of more than 50 ten thousand frames and corresponding exposure time. And responding to the application of high voltage to the gas discharge gap, automatically and continuously shooting a discharge process under the strong light generated by the gas discharge gap to obtain a second image, and sending the second image to a computer device.
Note that, the gas discharge process was observed by applying a high voltage to the gas discharge gap. The discharge process is a slowly evolving process including at least a streamer phase and a discharge extinction phase. The second image includes an image taken during the streamer phase and an image taken prior to the discharge extinction phase. The images shown in fig. 3A, 4A, and 5A are images taken during the streaming phase, and the images shown in fig. 3B, 4B, and 5B are images taken before the discharge extinguishing phase.
In an embodiment of the present invention, the second image includes two discharge paths, one is a path corresponding to a mirror image of the discharge path reflected by the plane mirror, and the other is a path corresponding to an object image of the discharge path photographed by the high-speed camera. In the images shown in fig. 3A, 3B, 4A, 4B, 5A, and 5B, the left discharge path is a mirror image of the discharge path reflected by the plane mirror, and the right discharge path is an object image of the discharge path photographed by the high-speed camera.
Step S4: the position of the suspended conductor in the second image is marked according to the position of the suspended conductor marked by the first image.
And establishing a first coordinate system (XOY) by taking the lower left corner of the first image when the first image is placed in the forward direction as the center of a circle O, the horizontal direction as an X axis and the vertical direction as a Y axis. The computer means 2 determine the position coordinates (X, Y) of the rectangular frame marking the floating conductor in the first coordinate system (XOY). The position coordinates (X, Y) correspond to pixel points in the first image. And establishing a second coordinate system (X 'O' Y ') by taking the lower left corner of the second image when the second image is placed in the forward direction as the center of a circle O', the transverse direction as an X 'axis and the longitudinal direction as a Y' axis. And converting the position coordinates (X, Y) of the rectangular frame marking the floating conductor in the first image into the position coordinates (X ', Y') of the floating conductor in the second coordinate system (X 'O' Y ') according to the corresponding relation of the first coordinate system (XOY) and the second coordinate system (X' O 'Y'). The computer device 2 can thus confirm the position of the floating conductor in the second image.
Step S5: analyzing the discharge path in the second image after marking.
In this embodiment, the position of the floating conductor is marked by a rectangular frame in the second image, based on the position of the floating conductor marked in the first image. And whether the discharge path is disconnected or not is analyzed according to the rectangular frame, so that whether two paths corresponding to the mirror image of the discharge path and the object image of the discharge path are disconnected or not can be determined. When at least one complete discharge path exists in the two discharge paths, confirming that the discharge path does not penetrate through the suspension conductor; and when the two discharge paths are not complete, confirming that the discharge paths penetrate through the suspension conductor.
In the embodiment, when a complete discharge path exists in the two discharge paths and a rectangular frame marking the position of the floating conductor is positioned on the discharge path, the discharge path is confirmed to bypass from the front or the back of the floating conductor; when both the two discharge paths are complete discharge paths and a rectangular frame marking the position of the floating conductor is positioned on one side of the discharge path, it is confirmed that the discharge path bypasses the side of the floating conductor.
Fig. 3A and 3B include two discharge paths, and two rectangular frames, respectively. The rectangular boxes in fig. 3A and 3B are the positions of the suspended conductors marked according to the rectangular boxes in the first image. As can be seen from fig. 3B, the two discharge paths are complete discharge paths, and the rectangular frame marking the position of the floating conductor is located at one side of the discharge path. It is confirmed that the discharge path bypasses the floating conductor and is bypassed from the side of the floating conductor.
As can be seen from fig. 4B, there is an incomplete discharge path in the two discharge paths, and a rectangular frame marking the position of the floating conductor is located on the discharge path. It is confirmed that the discharge path bypasses the floating conductor and bypasses from the front or the rear of the floating conductor. In fig. 4B, the left discharge path is a mirror image of the discharge path photographed by the high-speed camera, and the right discharge path is an object image of the discharge path photographed by the high-speed camera. The discharge path corresponding to the mirror image is a complete light-emitting path, and the discharge path corresponding to the object image is an incomplete light-emitting path. It follows that the discharge path bypasses from the front or the back of the floating conductor.
As can be seen from fig. 5B, both of the two discharge paths are incomplete, and the rectangular frame marking the position of the floating conductor is located on the discharge path, it is confirmed that the discharge path penetrates through the floating conductor. In fig. 5B, the left discharge path is a mirror image of the discharge path photographed by the high-speed camera, and the right discharge path is an object image of the discharge path photographed by the high-speed camera. The discharge paths corresponding to the mirror images are incomplete light emitting paths, and the discharge paths corresponding to the object images are also incomplete light emitting paths. Therefore, the discharge path penetrates through the floating conductor.
EXAMPLE III
Fig. 6 is a schematic diagram of a computer device according to a third embodiment of the present invention. The computer device 2 includes a memory 20, a processor 30, and a path identification system 40 stored in the memory 20 and operable on the processor 30. The processor 30 implements the steps of the above-mentioned embodiment of the path identifying method, such as the steps S1-S5 shown in fig. 2, when executing the path identifying system 40.
Illustratively, the path identification system 40 may be partitioned into one or more modules/units that are stored in the memory 20 and executed by the processor 30 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the path identification system 40 in the computer device 2. For example, the path identification system 40 may be partitioned into a receiving module 101, a labeling module 102, and an analyzing module 103 in fig. 7.
The receiving module 101 is configured to receive a first image captured by a high-speed camera in a low-illumination mode, where the first image is captured when a floating conductor is in a static state and a gas discharge gap is not discharged; the marking module 102 is configured to mark a position of the floating conductor in the first image; the receiving module 101 is further configured to receive a second image captured by the high-speed camera during a gas discharge process, where the second image includes two discharge paths; the marking module 102 is further configured to mark the position of the floating conductor in the second image according to the position of the floating conductor marked by the first image; the analysis module 103 is configured to analyze the discharge path in the marked second image.
The computer device 2 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. It will be appreciated by those skilled in the art that the schematic diagram 6 is merely an example of the computer apparatus 2, and does not constitute a limitation of the computer apparatus 2, and may include more or less components than those shown, or combine some components, or different components, for example, the computer apparatus 2 may further include input and output devices, network access devices, buses, and the like.
The Processor 30 may be a Central Processing Unit (CPU), and may include other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 30 is the control center of the computer device 2 and connects the various parts of the entire computer device 2 using various interfaces and lines.
The memory 20 may be used to store a path identification system 40 and/or modules/units, and the processor 30 implements various functions of the computer device 2 by running or executing computer programs and/or modules/units stored in the memory 20 and invoking data stored in the memory 20. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data) created according to the use of the computer device 2, and the like. The memory 20 may include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other non-volatile solid state storage device.
The modules in the computer device 2, if implemented in the form of software functional units and sold or used as separate products, may be stored in a non-volatile readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by the present application, and the computer readable instructions can be stored in a non-volatile readable storage medium and can realize the steps of the above methods when being executed by a processor. Wherein the computer readable instructions comprise computer readable instruction code which may be in source code form, object code form, an executable file or some intermediate form, and the like. The non-volatile readable medium may include: any entity or device capable of carrying said computer readable instruction code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM).
In the embodiments provided in the present invention, it should be understood that the disclosed computer apparatus and method can be implemented in other ways. For example, the above-described embodiments of the computer apparatus are merely illustrative, and for example, the division of the units is only one logical function division, and there may be other divisions when the actual implementation is performed.
In addition, functional units in the embodiments of the present invention may be integrated into the same processing unit, or each unit may exist alone physically, or two or more units are integrated into the same unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The units or computer means recited in the computer means claims may also be implemented by the same unit or computer means, either in software or in hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. An air gap discharge camera, the camera comprising:
two support columns for fixing the suspension conductor;
the two electrodes form a gas discharge gap between the two electrodes, the suspension conductor is positioned in the gas discharge gap, a gas discharge process is realized by applying high voltage to the gas discharge gap, and a discharge path is obtained;
a plane mirror for obtaining a mirror image of the discharge path;
and the high-speed camera and the plane mirror are respectively positioned on two sides of a plane formed by a straight line where the two electrodes are positioned and a straight line where the central points of the two support columns are positioned, and the discharge path is shot and discharged through the high-speed camera.
2. The air gap discharge camera as claimed in claim 1, wherein the two electrodes are located in a straight line with the floating conductor.
3. The air gap discharge camera as claimed in claim 2, wherein the high speed camera is adapted to record an object image of a discharge path during a gas discharge and to record a mirror image of the discharge path during a reflection of the gas discharge from the plane mirror.
4. The air gap discharge camera as claimed in claim 3, wherein a predetermined angle exists between a center point connecting line of the high speed camera and the object image of the discharge path and a center point connecting line of the high speed camera and the mirror image of the discharge path, so that the mirror image of the discharge path photographed by the high speed camera does not coincide with the object image of the discharge path.
5. A method for path identification, comprising:
receiving a first image shot by a high-speed camera in a low-illumination mode, wherein the first image is shot when a suspension conductor is in a static state and a gas discharge gap is not discharged;
marking the position of the suspended conductor in the first image;
receiving a second image shot by the high-speed camera in the gas discharge process, wherein the second image comprises two discharge paths;
marking the position of the suspended conductor in the second image according to the position of the suspended conductor marked by the first image; and
analyzing the discharge path in the second image after marking.
6. The path identifying method of claim 5, wherein the two discharge paths include an object image of a discharge path during the gas discharge process photographed by the high-speed camera in response to the application of the high voltage to the gas discharge gap and a mirror image of a discharge path during the gas discharge process simultaneously photographed as reflected from a plane mirror.
7. The path recognition method of claim 6, wherein said analyzing the discharge path in the labeled second image comprises:
when at least one complete discharge path exists in the two discharge paths, confirming that the discharge path does not penetrate through the suspension conductor;
and when the two discharge paths are not complete, confirming that the discharge paths penetrate through the suspension conductor.
8. The method of claim 7, wherein the confirming that the discharge path does not penetrate the floating conductor when at least one complete discharge path exists in the two discharge paths comprises:
confirming that the discharge path bypasses from the front or the back of the floating conductor when a complete discharge path exists in the two discharge paths and a rectangular frame marking the position of the floating conductor is positioned on the discharge path;
when both the two discharge paths are complete discharge paths and a rectangular frame marking the position of the floating conductor is positioned on one side of the discharge path, it is confirmed that the discharge path bypasses the side of the floating conductor.
9. A computer arrangement, characterized in that the computer arrangement comprises a processor for implementing a path recognition method according to any one of claims 5-8 when executing a computer program stored in a memory.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the path recognition method according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157430.3A CN110940899B (en) | 2019-11-22 | 2019-11-22 | Air gap discharge shooting device, path identification method, computer and medium |
Applications Claiming Priority (1)
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