CN106229949A - A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action - Google Patents
A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action Download PDFInfo
- Publication number
- CN106229949A CN106229949A CN201610828668.4A CN201610828668A CN106229949A CN 106229949 A CN106229949 A CN 106229949A CN 201610828668 A CN201610828668 A CN 201610828668A CN 106229949 A CN106229949 A CN 106229949A
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- CN
- China
- Prior art keywords
- bus
- photographic head
- action
- sample space
- troubles inside
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- Closed-Circuit Television Systems (AREA)
Abstract
The present invention proposes a kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action.Install photographic head in bus both sides, whether have arc light when shooting different types of bus troubles inside the sample space with photographic head, then shooting results is given certain special image recognition apparatus, this equipment has discriminated whether that arc light occurs.Bus protection is given with simple digital form by differentiation result.If photographic head photographs arc light, it is believed that be bus troubles inside the sample space, bus protection quick acting, do not consider that CT is saturated and wait element to differentiate result and delay process；If photographic head does not photographs arc light, bus protection carries out differentiation process according to original logic.The method will accelerate the speed of action of bus protection in the case of having arc light, is conducive to excision bus troubles inside the sample space rapidly, keeps power system stability.
Description
Technical field
The invention belongs to field of power, relate more specifically to relay protection of power system bus protection and utilize photographic head
Improve the new method of bus protection troubles inside the sample space speed of action.
Background technology
Collecting and distribute the effect of electric energy owing to bus plays in power system, bus protection is at relay protection of power system
There is very important status in field.Along with the capacity of power system is increasing, system stability destroys the loss caused the most more to be come
The biggest.During bus troubles inside the sample space, bus protection needs the fastest action excision fault, and holding power system stability is had by this
Very important meaning.
Bus troubles inside the sample space situation is more, in addition to typical metallicity fault, also has and satisfies through transition Resistance Fault, CT
With fault when, evolved fault, system oscillation etc..For above-mentioned various in the case of bus protection all can correct operation, existing mother
Line protection all has the criterion of series of complex, band deferred action during as turned troubles inside the sample space outside district, locking when external area error CT is saturated
Bus protection certain time etc..Although above-mentioned measure ensure that the correctness of protection act behavior, but various complicated criterion and prolonging
Time element existence, the bus protection speed of action when troubles inside the sample space certainly will be reduced.Therefore it is highly desirable to explore utilize
The feature of certain bus troubles inside the sample space accelerates the speed of action of bus protection.
In recent years, along with High-speed Photography Technology and the development of digital image recognition technology, it is provided that utilize event in bus district
The physical features that during barrier, certain is the most visual carries out the probability of fault distinguishing.
Summary of the invention
In order to improve bus protection speed of action under various complex situations, the present invention proposes one and utilizes photographic head
Improve the guard method of bus protection troubles inside the sample space speed of action.
The present invention is concrete by the following technical solutions.
A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action.It is characterized in that: with taking the photograph
Whether arc light is had in head shooting bus district, if there being arc light, bus protection rapid action excision fault.
A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action, it is characterised in that described
Method includes herein below:
(1) photographic head, the image in this photographic head captured in real-time bus district are installed in bus both sides；
(2) whether the shooting results real-time Transmission of photographic head is to image recognition apparatus, this equipment send out in differentiating bus district
Raw arc discharge, and by result of determination with simple digital form real-time Transmission to busbar protective device；
(3) if image recognition apparatus arc discharge occurs in judging bus district, then in bus protection is determined as bus district
Fault, rapid action excision fault bus；If there is not arc discharge, then bus in judging bus district in image recognition apparatus
Protection maintains original criterion.
The present invention farther includes following preferred version:
Photographic head shooting, the transmission of image and identification and recognition result is transferred to the time sum of busbar protective device
Should control within 15ms, to ensure the rapidity of bus protection action.
Arc light minimum duration thAnd between capture rate vp of video camera, should meet following relation: vp >=1/th >=17
Frame/s.
Collect about the image of arc discharge during bus troubles inside the sample space, give image recognition apparatus, by image recognition apparatus
According to some image recognition technology, photographic head is clapped by image recognition apparatus according to these characteristics of image and some image recognition technology
The image taken the photograph differentiates, to determine whether being bus troubles inside the sample space.
The present invention has a following useful technique effect:
Using technical scheme, if photographic head photographs arc light, it is believed that be bus troubles inside the sample space, bus is protected
Protect quick acting, do not consider that CT is saturated and wait element to differentiate result and delay process；If photographic head does not photographs arc light, bus is protected
Protect and carry out differentiation process according to original logic.The present invention by accelerating the speed of action of bus protection, has in the case of having arc light
It is beneficial to excision bus troubles inside the sample space rapidly, keeps power system stability.
Accompanying drawing explanation
Accompanying drawing 1 utilizes photographic head to improve the guard method flow process signal of bus protection troubles inside the sample space speed of action for the present invention
Figure.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, technical scheme is described in further detail.
As described in the background section, in the case of there is complex fault in bus district, as saturated in CT, evolved fault
Deng, the speed of action of bus protection can be slack-off, therefore be considered as new technique and improve the speed of action of bus protection.
The present invention utilizes photographic head shooting arc light phenomenon to improve the speed of action of bus protection.As shown in Figure 1, this
Bright technical scheme is as follows:
Step 1: install photographic head, the image in this photographic head captured in real-time bus district in bus both sides.
During bus troubles inside the sample space, often there is arc light to produce, therefore arc light is regarded as a marked feature of troubles inside the sample space.Examine
Consider, to arc light phenomenon, there is obviously visuality, use photographic head to monitor whether arc light in real time.But in view of bus
It is likely to arc light during external area error, for accurately distinguishing internal fault external fault, therefore installs photographic head in bus both sides, and photographic head
Should shoot in bus district, simultaneously for ensureing the definition of shooting image, it should use the photographic head of fine definition.So female
Line troubles inside the sample space and when having arc light, photographic head the most likely captures arc image, and when bus external area error, photographic head
Arc image cannot be captured, thus lay a good foundation for distinguishing bus internal fault external fault.
Owing to bus protection speed of action requires very fast, therefore consider that photographic head should possess higher capture rate, the most just
Substantial amounts of image can be photographed at short notice.
Step 2: whether the shooting results real-time Transmission of photographic head to image recognition apparatus, is differentiated in bus district by this equipment
Arcing discharge, and by result of determination with simple digital form real-time Transmission to busbar protective device.
In order to these images carrying out real-time reception, storing and identify, need to configure high performance image recognition and place
Reason equipment.After this equipment is to video procession, by recognition result, the most whether it is that arc light is in simple binary digit mode
(such as, 1 represents arc light, and 0 represents it is not arc light) gives rapidly busbar protective device.
Step 3: if image recognition apparatus arc light occurs in judging bus district, then event in bus protection is determined as bus district
Barrier, rapid action excision fault bus；If there is not arc light, then bus protection dimension in image recognition apparatus in judging bus district
Hold original criterion.
Bus protection carries out logical judgment to the result of image recognition apparatus.If there being arc light, then it is assumed that be bus
Troubles inside the sample space, and the land rapid action of internal fault typical characteristic；Without arc light, then maintain original differentiation logic, even if
There is the troubles inside the sample space can also correct operation.So arc image just constitutes the acceleration unit of a bus protection troubles inside the sample space action
Part, even if there is no arc light, original bus protection discriminating element also can correct operation, simply there is no speed advantage, thus continue
Stability and the reliability of original criterion are held.
The present invention capture rate to photographic head, and the shooting of arc image, transmission, recognition time are defined below.
First from the generation of arc light with there is the angle of time and carry out deriving and calculate.Arc light typically produces when bus is faulty
Raw, disappear after bus-bar fault is excised the latest, it is also possible to disappear in advance, have certain randomness.Photographic head arc light to be photographed
Photo, then its capture rate vp(unit is frame/s) should meet equation below:
vp≥1/th>=1/0.06 frame/s (1)
I.e. vp≥1/th>=17 frames/s (2)
Wherein, th≤60ms。
Along with developing rapidly of image recognition technology, can realize only needing a two field picture just can identify arc light special
Levy.For the most in theory, as long as photographic head capture rate meets formula (2), it is possible to sustainable existence th(th≤ 60ms)
Arc light at least photographs a photograph frame, and utilizes a photograph frame to identify arc light feature.The shooting speed of technical grade video camera
Even can reach 1000～10000 frames/s.
Arc image is used to improve bus protection speed of action, the then shooting of arc image, transmission, recognition time tdShould not
Should be more than the minimum movements time of metallicity fault in the district of national standard requirement, it may be assumed that
td≤15ms (3)
Shooting and process such as arc image meet formula (2) and formula (3) simultaneously, then on the one hand can photograph existence
Time is more than thArc light, even on the other hand protection act behavior can ensure to protect out when typical gold attribute troubles inside the sample space
Mouth is less than 20ms movement time.So at other complex faults, protect when as saturated in CT and faulty, evolved fault
Outlet time is less than 20ms, thus substantially increases the speed of action of bus protection.
In the present invention, the identification of bus troubles inside the sample space arc discharge image is realized by image recognition apparatus in the following way:
Collect about the image of arc discharge during bus troubles inside the sample space, give image recognition apparatus, by image recognition apparatus
According to image recognition technology, the characteristics of image of arc discharge when extracting bus troubles inside the sample space.Image recognition apparatus is according to these figures
The image shot photographic head as feature and some image recognition technology differentiates, to determine whether being bus troubles inside the sample space.
Image recognition technology sees " image recognition technology learnt based on semi-supervised clustering analysis and generalized distance function " (Zhejiang University
Thesis for the doctorate, author Gu Hong, 2011).
Applicant combines Figure of description and describes embodiments of the invention in detail and describe, but this area skill
Art personnel are it should be understood that above example is only the preferred embodiments of the invention, and detailed explanation is intended merely to help reader
It is more fully understood that the present invention is spiritual, and not limiting the scope of the invention, on the contrary, any invention based on present invention essence
Any improvement or modification that god is made all should fall within the scope and spirit of the invention.
Claims (4)
1. one kind utilizes the guard method that photographic head improves bus protection troubles inside the sample space speed of action, it is characterised in that: with shooting
Whether head shooting has arc light in bus district, if there being arc light, and bus protection rapid action excision fault.
2. one kind utilizes the guard method that photographic head improves bus protection troubles inside the sample space speed of action, it is characterised in that described side
Method includes herein below:
(1) photographic head, the image in this photographic head captured in real-time bus district are installed in bus both sides；
(2) the shooting results real-time Transmission of photographic head is to image recognition apparatus, this equipment whether arc occurs in differentiating bus district
Light discharge, and by result of determination with simple digital form real-time Transmission to busbar protective device；
(3) if image recognition apparatus arc discharge occurs in judging bus district, then bus protection is determined as bus troubles inside the sample space,
Action excision fault bus rapidly；If there is not arc discharge, then bus protection in judging bus district in image recognition apparatus
Maintain original criterion.
The guard method of raising bus protection troubles inside the sample space speed of action the most according to claim 2, it is characterised in that:
Photographic head shooting, the transmission of image and identification and recognition result is transferred to the time sum of busbar protective device should
Control within 15ms, to ensure the rapidity of bus protection action.
The guard method of raising bus protection troubles inside the sample space speed of action the most according to claim 3, it is characterised in that:
Arc light minimum duration thCapture rate v with video camerapBetween should meet following relation: vp≥1/th>=17 frames/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828668.4A CN106229949A (en) | 2016-09-18 | 2016-09-18 | A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828668.4A CN106229949A (en) | 2016-09-18 | 2016-09-18 | A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action |
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| Publication Number | Publication Date |
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| CN106229949A true CN106229949A (en) | 2016-12-14 |
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ID=58076123
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610828668.4A Pending CN106229949A (en) | 2016-09-18 | 2016-09-18 | A kind of guard method utilizing photographic head to improve bus protection troubles inside the sample space speed of action |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075916A1 (en) * | 2017-10-19 | 2019-04-25 | 中领世能（天津）科技有限公司 | Signal recognition and processing unit, method for recognizing and processing signal, and computer-readable medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201898576U (en) * | 2010-11-08 | 2011-07-13 | 沈阳仪表科学研究院 | High-voltage switch video monitoring system |
| CN202975240U (en) * | 2012-11-21 | 2013-06-05 | 河南理工大学 | Underground cable tour-inspecting and fault-locating apparatus |
| CN205091431U (en) * | 2015-11-16 | 2016-03-16 | 天津赛思科技发展有限公司 | Electric arc video monitor system |
| CN105759168A (en) * | 2016-02-16 | 2016-07-13 | 国家电网公司 | Underground cable tour inspection and fault locating device and detection and diagnosis method thereof |
-
2016
- 2016-09-18 CN CN201610828668.4A patent/CN106229949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201898576U (en) * | 2010-11-08 | 2011-07-13 | 沈阳仪表科学研究院 | High-voltage switch video monitoring system |
| CN202975240U (en) * | 2012-11-21 | 2013-06-05 | 河南理工大学 | Underground cable tour-inspecting and fault-locating apparatus |
| CN205091431U (en) * | 2015-11-16 | 2016-03-16 | 天津赛思科技发展有限公司 | Electric arc video monitor system |
| CN105759168A (en) * | 2016-02-16 | 2016-07-13 | 国家电网公司 | Underground cable tour inspection and fault locating device and detection and diagnosis method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075916A1 (en) * | 2017-10-19 | 2019-04-25 | 中领世能（天津）科技有限公司 | Signal recognition and processing unit, method for recognizing and processing signal, and computer-readable medium |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170106 Address after: 100085 Beijing city on the base of the information industry on the street, No. four, No. 9, Haidian District Applicant after: Beijing Sifang Jibao Automation Co., Ltd. Address before: 100085 Beijing city on the base of the information industry on the street, No. four, No. 9, Haidian District Applicant before: Beijing Sifang Jibao Automation Co., Ltd. Applicant before: North-China Electric Power Univ. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161214 |