CN107576456A - Power switch gas leak detection method and system - Google Patents
Power switch gas leak detection method and system Download PDFInfo
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- CN107576456A CN107576456A CN201710780957.6A CN201710780957A CN107576456A CN 107576456 A CN107576456 A CN 107576456A CN 201710780957 A CN201710780957 A CN 201710780957A CN 107576456 A CN107576456 A CN 107576456A
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Abstract
The application provides a kind of power switch gas leak detection method and system, including establishes the leak data storehouse of power switch, and the leak data storehouse includes history leakage point position.The pressure value at current time in the power switch internal environment is obtained, when the pressure value at the current time is less than pressure threshold, judges that gas leakage may occur for the power switch.When gas leakage may occur for the power switch, according to the leak data storehouse, leak detection is carried out to the power switch.Relative to prior art when being hunted leak using infrared imagery technique, blindness out-of-order detect.The power switch gas detection method and system that the application provides, using the method compared with historical data base, the leak detection order in power switch Leakage inspection is optimized, shortens leakage point detection time, improves leakage detector efficiency.
Description
Technical field
The application is related to electric power detection device technical field, more particularly to a kind of power switch gas leak detection method and
System.
Background technology
Gas-insulated switchgear, there is small volume, in light weight, security is good, reliability is high, adapts to adverse circumstances bar
The advantages that being used under part, and it is widely used in high pressure, super-pressure field.In actual motion, due to product manufacturing quality, fortune
The factor such as row loss and Rig up error, occurs the problem of gas leaks, and with the leakage of gas, gas pressure declines in equipment.
When less than a certain critical value, insulation breakdown will occur, cause switchgear to burn, or even influence whether whole circuit network
Operation, therefore the leakage of insulated switching installation gas is detected, it is very urgent to find in time and to solve its leakage problem.
At present, the most frequently used leak hunting method is that power switchgear is detected using infrared thermal imaging leak hunting technology,
A certain wave band is answered by power switchgear feeling of passivity, the suction radiated using the background object such as gas leakage and air to the wave band
It is different to receive intensity, the image of infrared imaging is created a difference, produces image shade, so as to the leakage of detection gas.This method makes
The gas leakage that can not be observed under visible light, it is high-visible under infrared imaging detection, realize that switchgear gas leaks
The lookup and positioning of point, so as to avoid the generation of circuit accident.
However, being leaked when gas occurs for power switchgear, leakage position is carried out to it using infrared thermal imaging leak hunting technology
When putting detection, typically blindness out-of-order to each position of power switchgear carry out infrared imaging detection, detection the time required to
Longer, leakage point detects less efficient, it is impossible to which detection finds leak position in time, carries out overhaul plan, and causes equipment to burn
Ruin, in some instances it may even be possible to whole circuit network is impacted, causes huge economic loss.
The content of the invention
This application provides a kind of power switch gas leak detection method and system, to solve blindness nothing in the prior art
Order carries out leak detection to each position of power switchgear, and leakage recall rate is low, and time-consuming for detection, it is impossible in time to leakage
Position carries out overhaul plan, and causes equipment burnout, the problem of causing huge economic losses.
A kind of power switch gas leak detection method, including：
The leak data storehouse of power switch is established, the leak data storehouse includes history leakage point position；
Obtain the pressure value at current time in the power switch internal environment；
When the pressure value at the current time is less than pressure threshold, judge that the power switch may occur gas and let out
Leakage；
When gas leakage may occur for the power switch, according to the leak data storehouse, the power switch is entered
Row leak detection.
Optionally, it is described according to the leak data storehouse, leak detection is carried out to the power switch, including：
When detecting the history leakage point position data in the leak data storehouse, the history is detected first and is let out
Leak source.
Optionally, the leak data storehouse also includes the leakage number of each history leakage point.
Optionally, it is described according to the leak data storehouse, leak detection is carried out to the power switch, in addition to：
When being stored with multiple history leakage point position datas in the leak data storehouse, leaked according to each history
The leakage number of point from high to low, detects the history leakage point successively.
Optionally, it is described according to the leak data storehouse, leak detection is carried out to the power switch, including：
Obtain detection imaging files；
The detection imaging files are contrasted with standard leak imaging files, identified in the detection imaging files
Leak imaging files；
By the test point corresponding to the leakage imaging files, leakage point is identified as.
Optionally, it is described by it is described leakage imaging files corresponding to monitoring point, be identified as after leakage point, the side
Method also includes：
Imaging files will be leaked corresponding to the leakage point and leakage point position data is stored in the leak data storehouse.
Optionally, the leak data storehouse also includes leak time, leak source administers situation, manufacturer, device housings material
Matter.
A kind of power switch gas detecting system, including：
Database unit, for establishing the leak data storehouse of the power switch, the leak data storehouse includes going through
History leakage point position；
Pressure value acquiring unit, for obtaining the pressure value at current time in the power switch internal environment；
Pressure value identifying unit, for when the pressure value at the current time is less than pressure threshold, judging the electric power
Gas leakage may occur for switch；
Gas leak detection apparatus, for when the power switch may occur gas leakage when, according to the leakage number
According to storehouse, leak detection is carried out to the power switch；The gas leak detection apparatus, including after being arranged at the power switch
The background board that surface temperature can be automatically adjusted in portion.
Optionally, the system also includes：
Imager, imaging files are detected for obtaining；
Recognition unit is imaged, for the detection imaging files to be contrasted with standard leak imaging files, identifies institute
State the leakage imaging files in detection imaging files；
Leak point identification unit, for by it is described leakage imaging files corresponding to monitoring point, be identified as leakage point；
Memory cell, for corresponding to the leakage point leakage will to be stored in leakage imaging files and leakage point position
In database.
Optionally, the gas leak detection apparatus, is additionally operable to work as and is stored with multiple history in the leak data storehouse and lets out
During leak source position data, according to each history leakage point leakage number from high to low, detect the history leakage successively
Point.
The technical scheme that the application provides includes following advantageous effects：
This application provides a kind of power switch gas leak detection method and system, relative to prior art using red
When outer imaging technique is hunted leak, blindness out-of-order detect, and recall rate is relatively low.The power switch gas that the application provides
Detection method and system, using the method compared with historical data base, optimize each position in power switch Leakage inspection
Leak detection order, shorten leakage point detection time, improve leakage detector efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the power switch gas leak detection method that the present embodiment provides；
Fig. 2 is the flow chart for carrying out leakage detection method to power switch according to leak data storehouse that the present embodiment provides；
Fig. 3 is the stream detected when detecting multiple history leakage point position datas to power switch that the present embodiment provides
Cheng Tu；
Fig. 4 is the flow chart for the detecting step that leak detection is carried out to power switch that the present embodiment provides；
Fig. 5 is the power switch leakage detection system in gas schematic diagram that the present embodiment provides.
Description of reference numerals：1st, Database unit, 2, pressure value acquiring unit, 3, pressure value identifying unit, 4, gas
Body leak detecting device, 5, imager, 6, imaging recognition unit, 7, leakage point identification unit, 8, memory cell.
Embodiment
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Embodiment 1
Fig. 1 is the flow chart for the power switch gas leak detection method that the embodiment of the present application provides.Referring to Fig. 1, the party
Method comprises the following steps：
S101：The leak data storehouse of power switch is established, the leak data storehouse includes history leakage point position.
The leak data storehouse is the information database of history leakage point, first in use, information in the leak data storehouse
Foundation can be manually inputted, then can establish the leak data storehouse by automatically saving in use.
S102：Obtain the pressure value at current time in power switch internal environment.
The pressure value of gas flow and power switch inside power switch, which has, directly to be contacted, if power switch gas is sent out
Raw leakage, then the gas pressure inside power switch can reduce with the reduction of gas flow.In a kind of possible embodiment
In, for convenience of being detected to power switch, power switch is divided into several intervals, each spaced apart intervals are provided with pressure biography
Sensor, to obtain the pressure value in the current time power switch interval.
S103：When the pressure value at current time is less than pressure threshold, judge that gas leakage may occur for power switch.
The pressure threshold of power switch is 0.5Mpa in the present embodiment, when the pressure value of power switch is less than 0.5Mpa,
Then think to judge gas leakage occurs.
S104：When gas leakage may occur for power switch, according to leak data storehouse, leakage inspection is carried out to power switch
Survey.
Leak data storehouse includes the positional information of history leakage point, can be first when gas leakage may occur for power switch
The information in leak data storehouse is transferred, according to history leakage situation, the order of optimizing detection leak position, saves leakage point detection
Time, the recall rate of leakage is improved, to be overhauled in time, the problems such as avoiding causing power switch to be damaged.If leak data
Without history leak data in storehouse, then a newly-built new document, for preserving new data.
When carrying out Leakage inspection using this method, the leak data storehouse of the power switch is initially set up, as going through
The information database of history leakage point.When the current pressure values of the power switch of acquisition are less than 0.5Mpa, the power switch is judged
Gas leakage may occur, then transfer the information in leak data storehouse, the history leakage point information in leak data storehouse is excellent
Change the sequence of positions that selection carries out leak detection, leak detection is sequentially carried out to power switch according to this.
Fig. 2 is the method flow for carrying out leak detection to power switch according to leak data storehouse that the embodiment of the present application provides
Figure.
Optionally, in above-mentioned 104 according to leak data storehouse, flow such as Fig. 2 institutes of leak detection are carried out to power switch
Show, comprise the following steps：
S201：Whether the position data of history leak point is had in detection leak data storehouse.
S202：When detecting history leakage point position data in leak data storehouse, detection history leakage point first.
Leakage occurred for history leakage point, and passed through maintenance process, because leakage point sealing itself is poor, or maintenance
The reasons such as carelessness, the possibility for occurring to leak again is larger, therefore leaks click-through to the larger history of Leakage probability occurs first
Row leak detection.
S203：When being not detected by gas leakage in history leakage point position, then the flange connections to power switch, instrument
Table junction, housing junction carry out Leakage inspection.
Because power switch is to concentrate the medium pressure elements such as bus, breaker, disconnecting switch to be enclosed in casing, comprehensive fortune
With modern insulation technology, cut-off the new high-tech product that technology, manufacturing technology, sensing technology, digital technology produce, its internal group
Into and each part annexation it is complex, the sealing of each part junction is relatively weak, be easier to occur gas leakage.
S204：When being not detected by history leak data in leak data storehouse, then the flange connections to power switch, instrument
Table junction, housing junction carry out Leakage inspection.
In above process, it is necessary to which flange connections, instrument junction, housing junction to power switch carry out gas
The situation of leak detection, its particular order detected need to be selected according to the concrete condition of power switch to be detected, the application
And be not limited, specifically, those skilled in the art can be for itself of the power switch local environment and power switch
The appropriate leak detection order of the selections such as attribute.
Optionally, leak data storehouse also includes the leakage number of each history leakage point, when the power switch has multiple go through
During history leakage point, the database also includes the number that each history leakage point leaks, and the leakage number of each history leakage point can
Arranged according to order from low to high in historical data base.
Fig. 3 be the present embodiment provide when detecting multiple history leakage point position datas to the detection stream of power switch
Cheng Tu.
Optionally, in above-mentioned S202 when detecting history leakage point position data in leak data storehouse, examine first
History leakage point is surveyed, this method flow is as shown in figure 3, comprise the following steps：
S301：Judge the number of history leakage point.
S302：When history leakage point number is more than one, the leakage number of each history leakage point is obtained.
S303：According to the order of leakage number from high to low, corresponding history leakage point position is detected.
Because the power switch there are multiple history leakage points, Leakage inspection is carried out to each history leakage point one by one,
Required detection time is longer, and detector efficiency is relatively low.And the leakage number of a certain history leakage point it is more when, show the leakage position
Put that its sealing property is poor, the possibility leaked again is larger, therefore leaks number from high to low according to history leakage point
Order to the power switch carry out Leakage inspection, each history leakage point is detected compared to blindness, can be saved
The time of leakage point detection, improve leak detection efficiency.
Fig. 4 is the detecting step flow chart that leak detection is carried out to power switch that the embodiment of the present application provides.
Optionally, in above-mentioned S104 according to leak data storehouse, leak detection is carried out to power switch, its testing process is such as
Shown in Fig. 4, comprise the following steps：
S401：Obtain detection imaging files.
Imaging files in the present embodiment refer to infrared imaging file, for different materials, to the infrared of a certain wave band
Absorb different, so as to embody different heat radiation images, leaked in the event of gas, the gas of leakage and background environment
Infra-red radiation is different, thus can form image shade, and then judges whether power switch occurs gas and let out by the file of imaging
Leakage.The imaging files can be that video can also be collection of illustrative plates file.
S402：Detection imaging files are contrasted with standard leak imaging files.
Leakage imaging files in recognition detection imaging files, by by pair of the imaging files of detection and normative document
Than improving the accuracy of gas leakage point detection, improving the recall rate that gas leaks.
S403：The test point corresponding to imaging files is will leak out, is identified as leakage point.
Optionally, the monitoring point that will leak out corresponding to imaging files in above-mentioned S403, is identified as after leakage point, should
Method also includes：
S404：A little corresponding leakage imaging files and leakage point position data is will leak out to be stored in leak data storehouse.
Existing Data Position in the imaging files deposit database that history leakage point leaks again；Newfound leakage point
It is stored in newly-built file, turns into the history leak data of the leakage point.Leakage point data base is enriched, for power switch again
It is secondary when leaking, carry out transferring and judging for leakage situation.
In a kind of possible embodiment, detection imaging files are carried out with standard leak imaging files in above-mentioned S402
Before contrast, including it will detect in imaging files deposit database.
A little corresponding leakage imaging files and leakage point position data are will leak out in above-mentioned S404 and is stored in leak data storehouse
In, including the detection imaging files of leakage unconfirmed are automatically deleted.
Optionally, leak data storehouse also includes leak time, leak source administers situation, can be that the leakage point carries when leaking again
For reference, leak detection is carried out to the position to facilitate.The leak data storehouse also includes manufacturer, device housings material, can
The equipment of a kind of situation of energy, same manufacturer or enclosure material, generation leakage number is more, when leaking again,
The leakage situation of the device location of the manufacturer or enclosure material can be considered to detect first, optimize the order of leak detection, contracting
The time required to short detection, leakage detector efficiency is improved.
Embodiment 2
Accompanying drawing 5 is refer to, the figure shows the power switch leakage detection system in gas schematic diagram that the present embodiment provides.
The embodiment of the present application provides a kind of power switch leakage detection system in gas, including：
Database unit 1, for establishing the leak data storehouse of power switch, the database includes history leakage point position
Put.
Pressure value acquiring unit 2, for obtaining the pressure value at current time in power switch internal environment, the pressure value obtains
Unit 2 is taken to include pressure sensor.
Pressure value identifying unit 3, for when the pressure value at current time is less than pressure threshold, judging the power switch
Gas leakage may occur.
Gas leak detection apparatus 4, for when power switch may occur gas leakage when, it is right according to leak data storehouse
Power switch carries out leak detection.The gas leak detection apparatus 4, including it is arranged at can automatically adjusting for power switch rear portion
The background board of surface temperature.
The temperature of the background board is adjustable to be set, and keeps setting temperature constant, is using the gas leak detection apparatus 4
When, the background plate temperature is set, makes it that there is larger temperature gap with surrounding environment, after background plate temperature is constant, will be carried on the back
Scape plate is positioned over detection position rear, is imaged together with detection position.
The use of the background board, the temperature gap between detection position gas leakage and background is increased, manufactured leakage gas
The ambient temperature of body infrared imaging is poor, improves the definition of imaging files contrast, is easy to observe, avoids due to infra-red radiation
Infrared imaging is unintelligible, and leads to not the problem of whether accurate judgement occurs gas leakage, improves the detection of gas leakage
Rate.
Hickey is additionally provided with the housing of the background board, by the hickey, background board can be connected with tripod, be fitted
In the leak detection relatively low for electric power switching devices small volume or leakage point position；Also can be by the hickey by background
Plate is connected on longer insulating bar, suitable for the leak detection that power switchgear volume is larger or leakage point position is higher
In, there is relatively broad use range.
The leak data storehouse of power switch is established first by Database unit 1, is then obtained by pressure value single
Member 2, the pressure value inside current time power switch is obtained, the pressure value is contrasted using pressure value identifying unit 3, when
When pressure value is less than 0.5Mpa, judge that gas leakage may occur for the power switch, the history leakage in leak data storehouse
Information, Leakage inspection is carried out to the power switch using gas leak detection apparatus 4.
Optionally, the power switch leakage detection system in gas also includes：
Imager 5, imaging files are detected for obtaining, the imager 5 is high-precision infrared thermoviewer, is to utilize infrared spy
Survey device and optical imagery object lens receive the infrared energy distribution pattern reflection of measured target to the photosensitive member of infrared detector
On part, so as to obtain image.The specification, volume etc. of its imaging pixel, imaging mode and imager 5 does not limit in this application
System, specifically, those skilled in the art can be directed to specifically used environment and own situation is suitably selected it.
The imager 5 also includes video or collection of illustrative plates processing software, can carry out the infrared emanation collection of illustrative plates or video of acquisition
Pixelation processing, to facilitate video or collection of illustrative plates further contrast and identification.
Recognition unit 6 is imaged, for detection imaging files to be contrasted with standard leak imaging files, identifies the inspection
The leakage imaging files surveyed in imaging files.The imaging recognition unit 6 includes image recognition software, and imaging collection of illustrative plates or video are entered
The automatic identification of row, and will there are gas leakage shape detection imaging files to be contrasted with standard leak imaging files, to confirm to leak
Imaging collection of illustrative plates or video.
Point identification unit 7 being leaked, for will leak out the monitoring point corresponding to imaging files, being identified as leakage point.
Memory cell 8, leak data storehouse is stored in for will leak out a little corresponding leakage imaging files and leakage point position
In, unacknowledged imaging files are then automatically deleted.
Optionally, gas leak detection apparatus 4, it is additionally operable to be stored with multiple history leakage point positions in leak data storehouse
During data, according to each history leakage point leakage number from high to low, detection history leakage point successively.
This application provides a kind of power switch gas leak detection method and system, relative to prior art using red
When outer imaging technique is hunted leak, blindness out-of-order carries out leak detection to each position of power switch, and detection is time-consuming longer, inspection
Go out less efficient.The power switch gas detection method and system that the application provides, using the method compared with historical data base,
The leak detection order at each position in power switch Leakage inspection is optimized, shortens leakage point detection time, improves leakage inspection
Go out efficiency, leakage point can be overhauled in time, reduce the damage probability of switchgear.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation makes a distinction with another entity or operation, and not necessarily requires or imply these entities or exist between operating any
This actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that article or equipment including a series of elements not only include those key elements, but also including not having
The other element being expressly recited, or also include for this process, method, article or the intrinsic key element of equipment.Do not having
There is the key element in the case of more limiting, limited by sentence "including a ...", it is not excluded that including the mistake of the key element
Other identical element in journey, method, article or equipment also be present.
Described above is only the embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.A variety of modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments in the case where not departing from spirit herein or scope.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
It should be appreciated that the content that the application is not limited to be described above and is shown in the drawings, and can
To carry out various modifications and changes without departing from the scope.Scope of the present application is only limited by appended claim.
Claims (10)
- A kind of 1. power switch gas leak detection method, it is characterised in that including：The leak data storehouse of power switch is established, the leak data storehouse includes history leakage point position；Obtain the pressure value at current time in the power switch internal environment；When the pressure value at the current time is less than pressure threshold, judge that gas leakage may occur for the power switch；When gas leakage may occur for the power switch, according to the leak data storehouse, the power switch is let out Leak detection.
- 2. power switch gas leak detection method according to claim 1, it is characterised in that described according to the leakage Database, leak detection is carried out to the power switch, including：When detecting the history leakage point position data in the leak data storehouse, the history leakage is detected first Point.
- 3. power switch gas leak detection method according to claim 2, it is characterised in that the leak data storehouse is also Include the leakage number of each history leakage point.
- 4. power switch gas leak detection method according to claim 3, it is characterised in that described according to the leakage Database, leak detection is carried out to the power switch, in addition to：When being stored with multiple history leakage point position datas in the leak data storehouse, according to each history leakage point Leak number from high to low, detect the history leakage point successively.
- 5. power switch gas leak detection method according to claim 1, it is characterised in that described according to the leakage Database, leak detection is carried out to the power switch, including：Obtain detection imaging files；The detection imaging files are contrasted with standard leak imaging files, identify the leakage in the detection imaging files Imaging files；By the test point corresponding to the leakage imaging files, leakage point is identified as.
- 6. power switch gas leak detection method according to claim 5, it is characterised in that described by the leakage Monitoring point corresponding to imaging files, is identified as after leakage point, and methods described also includes：Imaging files will be leaked corresponding to the leakage point and leakage point position data is stored in the leak data storehouse.
- 7. power switch gas leak detection method according to claim 1, it is characterised in that the leak data storehouse is also Situation, manufacturer, device housings material are administered including leak time, leak source.
- A kind of 8. power switch gas detecting system, it is characterised in that including：Database unit (1), for establishing the leak data storehouse of the power switch, the leak data storehouse includes history Leakage point position；Pressure value acquiring unit (2), for obtaining the pressure value at current time in the power switch internal environment；Pressure value identifying unit (3), for when the pressure value at the current time is less than pressure threshold, judging that the electric power is opened Gas leakage may occur for pass；Gas leak detection apparatus (4), for when the power switch may occur gas leakage when, according to the leak data Storehouse, leak detection is carried out to the power switch；The gas leak detection apparatus (4), including it is arranged at the power switch The background board that surface temperature can be automatically adjusted at rear portion.
- 9. power switch gas detecting system according to claim 8, it is characterised in that the system also includes：Imager (5), imaging files are detected for obtaining；Recognition unit (6) is imaged, for the detection imaging files to be contrasted with standard leak imaging files, described in identification Detect the leakage imaging files in imaging files；Leak point identification unit (7), for by it is described leakage imaging files corresponding to monitoring point, be identified as leakage point；Memory cell (8), for corresponding to the leakage point leakage will to be stored in leakage imaging files and leakage point position In database.
- 10. power switch gas detecting system according to claim 8, it is characterised in that the Leakage inspection dress (4) are put, are additionally operable to when being stored with multiple history leakage point position datas in the leak data storehouse, according to each history The leakage number of leakage point from high to low, detects the history leakage point successively.
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| CN112924106A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Online monitoring method, device and system for SF6 gas insulation equipment of transformer substation and storage medium |
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| 罗宗昌;刘陈瑶;唐彬;: "红外成像检漏技术在SF_6设备检修工作中的应用" * |
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| CN110487487A (en) * | 2019-09-25 | 2019-11-22 | 云南电网有限责任公司电力科学研究院 | A kind of transformer respiratory system leak hunting method based on infrared imagery technique |
| CN112924106A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Online monitoring method, device and system for SF6 gas insulation equipment of transformer substation and storage medium |
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Application publication date: 20180112 |