CN106093675A - A kind of arc photosensor and arc light processing method - Google Patents
A kind of arc photosensor and arc light processing method Download PDFInfo
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- CN106093675A CN106093675A CN201610395025.5A CN201610395025A CN106093675A CN 106093675 A CN106093675 A CN 106093675A CN 201610395025 A CN201610395025 A CN 201610395025A CN 106093675 A CN106093675 A CN 106093675A
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- 230000003287 optical effect Effects 0.000 claims abstract description 37
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- 239000000523 sample Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 12
- 230000009471 action Effects 0.000 abstract description 7
- 230000006378 damage Effects 0.000 description 3
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
Abstract
The invention discloses a kind of arc photosensor and arc light processing method, arc photosensor includes: sensing element, conversion element, change-over circuit and threshold circuit；Sensing element is connected with conversion element, is used for receiving arc optical signal, and exports arc optical signal to conversion element；Conversion element is connected with change-over circuit, is used for being converted into arc optical signal circuit parameter, and exports circuit parameter to change-over circuit；Change-over circuit is connected with threshold circuit, is used for being converted into the circuit parameter of input the signal of telecommunication, and exports the signal of telecommunication to threshold circuit；Threshold circuit is for judging to the signal of telecommunication of input, to determine whether to export the signal of telecommunication.Arc light is converted to the signal of telecommunication by sensing element, conversion element and change-over circuit by the present invention, improves the accuracy judging arc optical signal；Effectively distinguished the low light level and high light simultaneously by threshold circuit, prevent the misoperation when operation, maintenance, maintenance of arc protection equipment, improve the reliability of arc protection action.
Description
Technical field
The present invention relates to Relay Protection Technology in Power System field, be specifically related to a kind of arc photosensor and arc light process side
Method.
Background technology
Middle-low voltage switch cabinet bus protection relies primarily on the overcurrent protection of transformer backup to excise busbar short-circuit fault,
This method meeting causing trouble mute time is long, strengthens the degree of injury of equipment.And electrical system bus arc protection possesses
Low cost, the degree of accuracy are high, range flexibly, can the advantage such as quickly networking, low during power system arc protection is incorporated into
It is necessary for compressing switch in cabinet.At present, all rely on can be accurately and reliably in the further investigation of every subjects and engineering field
Ground obtain a large amount of human sensory cannot the information of perception, and sensor is in the interface position of research object and TT&C system, will
Information to be obtained is converted into easily transmission and the tractable signal of telecommunication.Therefore sensor status and effect is even more important.
Most of now light sensor is all linear transducer, and i.e. in photoelectric conversion process, no matter light is strong
Degree size, the current signal of photosensitive output is all close to linearly increasing.The general principle of power system arc protection be based on
The double criterion of arc light and electric current makes breaker make action to protect bus, in the maintenance, maintenance process of power system device, holds
It is vulnerable to the impact of the low light level such as flashlight, fluorescent lamp so that arc protection equipment can not detect arc accurately and reliably
Light, it is possible to misoperation occurs.Therefore detecting arc light accurately and reliably becomes particularly important.
Content of the invention
Owing to existing arc photosensor is easily subject to the impact of the low light level such as flashlight, fluorescent lamp so that arc light is protected
The equipment of protecting can not detect arc light accurately and reliably, it is possible to the problem that misoperation occurs, and the present invention proposes a kind of arc light and passes
Sensor and arc light processing method.
First aspect, the present invention proposes a kind of arc photosensor, comprising: sensing element, conversion element, change-over circuit and door
Sill circuit；
Described sensing element is connected with described conversion element, is used for receiving arc optical signal, and exports described arc optical signal
To described conversion element；
Described conversion element is connected with described change-over circuit, is used for being converted into described arc optical signal circuit parameter, and will
The output of described circuit parameter is to described change-over circuit；
Described change-over circuit is connected with described threshold circuit, for the described circuit parameter of input is converted into the signal of telecommunication,
And by the output of the described signal of telecommunication to described threshold circuit；
Described threshold circuit is for judging to the described signal of telecommunication of input, to determine whether to export the described signal of telecommunication.
Preferably, also include: main control unit；
Described main control unit is connected with described threshold circuit, for receiving the described signal of telecommunication of described threshold circuit output.
Preferably, the power of described sensing element is according to default arc light light intensity, and uses light intensity computing formula to be calculated.
Preferably, the described signal of telecommunication inputting is judged by described threshold circuit according to described default arc light light intensity, if
The described signal of telecommunication is the corresponding signal of telecommunication of arc light more than described default arc light light intensity, then by the output of the described signal of telecommunication to described master
Control unit.
Preferably, described sensing element includes arc probe, and described arc probe is used for detecting arc light.
Second aspect, the present invention also proposes a kind of arc light processing method, comprising:
Sensing element receives arc optical signal, and exports described arc optical signal to conversion element；
Described arc optical signal is converted into circuit parameter by described conversion element, and by the output of described circuit parameter to conversion electricity
Road；
The described circuit parameter inputting is converted into the signal of telecommunication by described change-over circuit, and exports the described signal of telecommunication to threshold
Circuit；
The described signal of telecommunication to input for the described threshold circuit judges, to determine whether to export the described signal of telecommunication.
Preferably, also include:
Main control unit receives the described signal of telecommunication of described threshold circuit output.
Preferably, the power of described sensing element is according to default arc light light intensity, and uses light intensity computing formula to be calculated.
Preferably, the described signal of telecommunication to input for the described threshold circuit judges, to determine whether to export described telecommunications
Number, farther include:
The described signal of telecommunication inputting is judged by described threshold circuit according to described default arc light light intensity, if described telecommunications
Number for more than the corresponding signal of telecommunication of arc light of described default arc light light intensity, then by the output of the described signal of telecommunication to described main control unit.
Preferably, described sensing element receives arc optical signal, farther includes:
The arc probe detection arc optical signal by described sensing element for the described sensing element.
As shown from the above technical solution, by sensing element, conversion element and change-over circuit, arc light is converted to the signal of telecommunication,
Improve the accuracy judging arc optical signal；Effectively distinguished the low light level and high light simultaneously by threshold circuit, prevent arc protection
Equipment misoperation when operation, maintenance, maintenance, improves the reliability of arc protection action.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the accompanying drawing of required use is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, all right
Obtain other accompanying drawing according to these figures.
The structural representation of a kind of arc photosensor that Fig. 1 provides for one embodiment of the invention；
The input-output curve of a kind of light sensor with linear characteristic that Fig. 2 provides for one embodiment of the invention
Figure；
The input-output curve of a kind of arc photosensor with nonlinear characteristic that Fig. 3 provides for one embodiment of the invention
Figure；
The front view of a kind of arc photosensor that Fig. 4 provides for one embodiment of the invention；
The right view of a kind of arc photosensor that Fig. 5 provides for one embodiment of the invention；
The front schematic diagram of a kind of arc photosensor assembling that Fig. 6 provides for one embodiment of the invention；
Schematic diagram after a kind of arc photosensor assembling that Fig. 7 provides for one embodiment of the invention；
The schematic flow sheet of a kind of arc light processing method that Fig. 8 provides for one embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of invention is further described.Following example are only used for more clear
Chu's ground explanation technical scheme, and can not limit the scope of the invention with this.
Fig. 1 shows the structural representation of a kind of arc photosensor that one embodiment of the invention provides, comprising: sensing element
11st, conversion element the 12nd, change-over circuit 13 and threshold circuit 14；
Described sensing element 11 is connected with described conversion element 12, is used for receiving arc optical signal, and by described arc optical signal
Output is to described conversion element 12；
Described conversion element 12 is connected with described change-over circuit 13, for described arc optical signal is converted into circuit parameter,
And by the output of described circuit parameter to described change-over circuit 13；
Described change-over circuit 13 is connected with described threshold circuit 14, for the described circuit parameter of input is converted into telecommunications
Number, and by the output of the described signal of telecommunication to described threshold circuit 14；
Described threshold circuit 14 is for judging to the described signal of telecommunication of input, to determine whether to export described telecommunications
Number.
Arc light is converted to the signal of telecommunication by sensing element, conversion element and change-over circuit by the present embodiment, improves to arc light
The accuracy that signal judges；Effectively distinguished the low light level and high light by threshold circuit simultaneously, prevent arc protection equipment run,
Misoperation when maintenance, maintenance, improves the reliability of arc protection action
Further, described arc photosensor also includes: main control unit 15；
Described main control unit 15 is connected with described threshold circuit 14, for receiving the described electricity of described threshold circuit 14 output
Signal.
Wherein, the signal of telecommunication to input for the described threshold circuit judges, if eligible, then exports to master control list
Unit, does not otherwise export.
The signal exporting to main control unit can be controlled by threshold circuit.
For example, the present embodiment provide the arc photosensor with nonlinear characteristic, can light intensity 3000lux with
Under, the arc optical signal detecting will not be sent to main control unit 15；When light intensity 3000lux and above when, sensor can be by
The arc optical signal detecting sends main control unit 15 to.
Specifically, the power of described sensing element 11 is according to default arc light light intensity, and uses light intensity computing formula to calculate
Arrive.
According to light intensity computing formula: light intensity=power * light efficiency/area, calculate need when light intensity is 3000lux much
The power component of power.
Obtained the power of sensing element by light intensity computing formula so that sensing element can distinguish the arc of different capacity
Light, and specific arc light is detected.
Further, the described signal of telecommunication inputting is sentenced by described threshold circuit 14 according to described default arc light light intensity
Disconnected, if the described signal of telecommunication is the corresponding signal of telecommunication of arc light more than described default arc light light intensity, then the described signal of telecommunication is exported extremely
Described main control unit 15.
For example, design a simple circuit, use the light sensor of certain model, use light intensity computing formula meter
Light sensor is irradiated by the power parameter obtaining, and obtains the circuit parameter now becoming through change-over circuit.
According to one threshold circuit of described circuit parameter design so that when light intensity 3000lux and above when, will sensing
The arc optical signal that device detects sends main control unit 15 to, does not otherwise deal with.Solve light sensor just for high light
The problem responding.
Fig. 2 and Fig. 3 respectively illustrates the light sensor with linear characteristic of the present embodiment offer and has non-linear
The input-output curve figure of the arc photosensor of characteristic；Contrast have linear characteristic light sensor input/output relation and
There is input and the output relation of the arc photosensor of nonlinear characteristic, for the light sensor with linear characteristic, work as light
Strong when 3000lux below and above, difference is simultaneously little；And for the present embodiment offer, there is nonlinear arc light sensor
Device, when light intensity is in 3000lux below and above, the difference of electric current is clearly.
The signal of telecommunication that change-over circuit is sent by threshold circuit judges, it is judged that foundation is the optical signal light detecting
Strong when below 3000lux, it is not processed；When the optical signal light intensity detecting 3000lux and above when, it is known that
The optical signal detecting is arc optical signal, is transferred to main control unit and is acted upon.
The present embodiment is effectively distinguished the low light level such as flashlight, fluorescent lamp by threshold circuit and arc light is such by force
Light, prevents the misoperation when operation, maintenance, maintenance of arc protection equipment, improves the reliability of arc protection action.
Further, described sensing element 11 includes arc probe, and described arc probe is used for detecting arc light.
Fig. 4-7 respectively illustrates signal before the front view of a kind of arc photosensor, right view, assembling that the present embodiment provides
Schematic diagram after figure and assembling；Wherein, arc probe is designed to cylinder, and other devices are integrated in a cuboid, by this biography
Sensor is arranged in switch cubicle.
For example, in Fig. 4-7, A can be 13mm, and B can be 8mm, and C can be 9mm, and D can be 21mm, and E is permissible
For 46mm, F can be 8mm, and G can be 44mm, and H can be 10mm.
When there is arc short-circuit fault in middle-low voltage switch cabinet, only control at 100MS when total mute time of fault
Within the equipment in middle-low voltage switch cabinet could be protected without damage.The arc photosensor that the present embodiment provides is applied to electric power
System arc protection, can accurately and reliably distinguish the optical signal receiving is arc light or other such as flashlights, fluorescent lamp
Deng the low light level, arc light can be accurately detected when bus breaks down, enable arc fault cut in 100MS, improve
The reliability of power system arc protection action, thus decrease arc fault and the equipment in switch cubicle is caused damage.
Fig. 8 shows the schematic flow sheet of a kind of arc light processing method that the present embodiment provides, and described method includes:
S1, sensing element receive arc optical signal, and export described arc optical signal to conversion element；
Described arc optical signal is converted into circuit parameter by S2, described conversion element, and extremely turns the output of described circuit parameter
Change circuit；
The described circuit parameter inputting is converted into the signal of telecommunication by S3, described change-over circuit, and exports extremely the described signal of telecommunication
Threshold circuit；
S4, the described threshold circuit described signal of telecommunication to input judges, to determine whether to export the described signal of telecommunication.
Arc light is converted to the signal of telecommunication by sensing element, conversion element and change-over circuit by the present embodiment, improves to arc light
The accuracy that signal judges；Effectively distinguished the low light level and high light by threshold circuit simultaneously, prevent arc protection equipment run,
Misoperation when maintenance, maintenance, improves the reliability of arc protection action
Further, described method also includes:
S5, main control unit receive the described signal of telecommunication of described threshold circuit output.
Specifically, the power of described sensing element is according to default arc light light intensity, and uses light intensity computing formula to be calculated.
Further, S4 includes:
The described signal of telecommunication inputting is judged by described threshold circuit according to described default arc light light intensity, if described telecommunications
Number for more than the corresponding signal of telecommunication of arc light of described default arc light light intensity, then by the output of the described signal of telecommunication to described main control unit.
Further, described sensing element receives arc optical signal, farther includes:
The arc probe detection arc optical signal by described sensing element for the described sensing element.
Arc light processing method described in the present embodiment may be used for performing said apparatus embodiment, its principle and technique effect
Similar, here is omitted.
In the specification of the present invention, illustrate a large amount of detail.It is to be appreciated, however, that embodiments of the invention are permissible
Put into practice in the case of there is no these details.In some instances, it is not shown specifically known method, structure and skill
Art, in order to do not obscure the understanding of this description.
Claims (10)
1. an arc photosensor, it is characterised in that include: sensing element, conversion element, change-over circuit and threshold circuit；
Described sensing element is connected with described conversion element, is used for receiving arc optical signal, and exports described arc optical signal to institute
State conversion element；
Described conversion element is connected with described change-over circuit, for described arc optical signal is converted into circuit parameter, and by described
Circuit parameter output is to described change-over circuit；
Described change-over circuit is connected with described threshold circuit, is used for the described circuit parameter by input and is converted into the signal of telecommunication, and will
The output of the described signal of telecommunication is to described threshold circuit；
Described threshold circuit is for judging to the described signal of telecommunication of input, to determine whether to export the described signal of telecommunication.
2. arc photosensor according to claim 1, it is characterised in that also include: main control unit；
Described main control unit is connected with described threshold circuit, for receiving the described signal of telecommunication of described threshold circuit output.
3. arc photosensor according to claim 1, it is characterised in that the power of described sensing element is according to default arc light
Light intensity, and use light intensity computing formula to be calculated.
4. arc photosensor according to claim 2, it is characterised in that described threshold circuit is according to described default arc light light
By force the described signal of telecommunication of input is judged, if the described signal of telecommunication is the corresponding electricity of arc light more than described default arc light light intensity
Signal, then by the output of the described signal of telecommunication to described main control unit.
5. arc photosensor according to claim 1, it is characterised in that described sensing element includes arc probe, described
Arc probe is used for detecting arc light.
6. an arc light processing method, it is characterised in that include:
Sensing element receives arc optical signal, and exports described arc optical signal to conversion element；
Described arc optical signal is converted into circuit parameter by described conversion element, and exports described circuit parameter to change-over circuit；
The described circuit parameter inputting is converted into the signal of telecommunication by described change-over circuit, and by the output of the described signal of telecommunication to threshold electricity
Road；
The described signal of telecommunication to input for the described threshold circuit judges, to determine whether to export the described signal of telecommunication.
7. method according to claim 6, it is characterised in that also include:
Main control unit receives the described signal of telecommunication of described threshold circuit output.
8. method according to claim 6, it is characterised in that the power of described sensing element according to default arc light light intensity,
And use light intensity computing formula to be calculated.
9. method according to claim 7, it is characterised in that the described signal of telecommunication to input for the described threshold circuit is sentenced
Disconnected, determining whether to export the described signal of telecommunication, farther include:
The described signal of telecommunication inputting is judged by described threshold circuit according to described default arc light light intensity, if the described signal of telecommunication is
More than the corresponding signal of telecommunication of arc light of described default arc light light intensity, then by the output of the described signal of telecommunication to described main control unit.
10. method according to claim 6, it is characterised in that described sensing element receives arc optical signal, wraps further
Include:
The arc probe detection arc optical signal by described sensing element for the described sensing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395025.5A CN106093675A (en) | 2016-06-06 | 2016-06-06 | A kind of arc photosensor and arc light processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610395025.5A CN106093675A (en) | 2016-06-06 | 2016-06-06 | A kind of arc photosensor and arc light processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195466A (en) * | 2017-12-29 | 2018-06-22 | 南京国网电瑞继保科技股份有限公司 | A kind of arc light method of sampling |
| CN108963957A (en) * | 2018-06-29 | 2018-12-07 | 国网湖南省电力有限公司 | Middle-low voltage switch cabinet arc photosensor self checking method and arc protection equipment |
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| CN102959410A (en) * | 2009-12-11 | 2013-03-06 | 阿尔斯通技术有限公司 | Method for arc detection and devices thereof |
| CN105281299A (en) * | 2014-07-08 | 2016-01-27 | 国家电网公司 | Electrical cabinet arc light protection device and protection method |
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| WO2001086331A1 (en) * | 2000-05-09 | 2001-11-15 | Telefonaktiebolaget Lm Ericsson | Arc recentering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108963957A (en) * | 2018-06-29 | 2018-12-07 | 国网湖南省电力有限公司 | Middle-low voltage switch cabinet arc photosensor self checking method and arc protection equipment |
| CN108963957B (en) * | 2018-06-29 | 2020-06-12 | 国网湖南省电力有限公司 | Self-checking method for arc light sensor of middle and low voltage switch cabinet and arc light protection equipment |
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Application publication date: 20161109 |