CN205679713U - Switch cubicle arc light state monitoring apparatus - Google Patents
Switch cubicle arc light state monitoring apparatus Download PDFInfo
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- CN205679713U CN205679713U CN201620623989.6U CN201620623989U CN205679713U CN 205679713 U CN205679713 U CN 205679713U CN 201620623989 U CN201620623989 U CN 201620623989U CN 205679713 U CN205679713 U CN 205679713U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 239000000523 sample Substances 0.000 claims abstract description 32
- 238000007493 shaping process Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000011664 signaling Effects 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims 1
- 238000004080 punching Methods 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012806 monitoring device Methods 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
This utility model relates to a kind of switch cubicle arc light state monitoring apparatus, pop one's head in including ultraviolet pulse, ultraviolet pulse probe is upper installs optical filter and filter plate, ultraviolet pulse is popped one's head in by photoelectric conversion tube D1, signaling conversion circuit connects voltage output end, signaling conversion circuit is by signal shaping and filtering circuit, signal amplification circuit and I V change-over circuit composition, it is characterized in that: the outfan of signal shaping and filtering circuit separately connects voltage comparator circuit, the outfan of voltage comparator circuit connects central information processor, monitoring device is additionally provided with the light source generator of corresponding ultraviolet pulse probe, the electrical signal of photoelectric conversion tube D1 is separately connected with central information processor.It uses reliable, the lonely light fault in accurate measurements switch cubicle, it is to avoid the generation of electric power accident, it is ensured that power equipment safety runs.
Description
Technical field
This utility model relates to a kind of switch cubicle arc light state monitoring apparatus, belongs to power system switch cabinet primary equipment peace
Full technical field.
Background technology
Along with the development of national economy, switch cubicle is extensively applied in power department and industrial enterprise, and switch cubicle
Safety problem is the most day by day paid close attention to by people.Wherein, the arc fault that inside switch cabinet the occurs safe operation to power equipment
And the personal safety of staff creates serious threat.Arc fault is the electric discharge phenomena of a kind of free gas, the temperature of electric arc
Degree can reach more than 20000 DEG C, and under such extreme condition, the power equipment of inside switch cabinet can suffer serious destruction,
And the High Temperature Gas cognition produced in the inside switch cabinet short time makes switch cubicle explode, the personal safety structure to staff
Become serious threat, but the relay protection system that power department is used can not judge arc fault quickly, thus
Electric arc development is made to expand.
At present, the method for detection arc fault has a lot, such as judges whether to send out by the change of the signal such as pressure, light
Give birth to arc fault, but a kind of simple method has been difficult to judge accurately the generation of arc fault, the most typically
It is all comprehensively to be judged by multiple method, such as judges whether to there occurs electric arc event by the ultraviolet light in optical signal
Barrier.Existing arc photosensor is exactly to make use of ultraviolet pulse probe to be changed into by photoelectric conversion tube by the ultraviolet light received
The signal of telecommunication, then by this signal of telecommunication after filtering, amplify and I-V conversion, finally deliver to voltage output end, to reach testing goal.
But during Shi Yonging, the testing result of this arc photosensor is generally only and detects point sometime, it is impossible to in short time period
Voltage output result makes evaluation, i.e. can not detect the arc fault number of times in the switch cubicle in short time period, and described electric arc
The number of stoppages is the important evidence judging arc fault detection accuracy.The most existing arc photosensor is it some times happens that miss
Report, accuracy rate is relatively low, and user can not relieved use；Ultraviolet pulse is popped one's head in once be damaged simultaneously, loses detection function,
And staff can not find in time, easily cause electric power accident.
Summary of the invention
The purpose of this utility model is to provide for a kind of service-strong overcoming the above-mentioned deficiency of existing arc photosensor
Switch cubicle arc light state monitoring apparatus, the arc fault in accurate measurements switch cubicle, it is to avoid the generation of electric power accident, it is ensured that electric power
Equipment safety operation.
The technical solution of the utility model is:
A kind of switch cubicle arc light state monitoring apparatus, pops one's head in including ultraviolet pulse, and ultraviolet pulse probe installs optical filter
And filter plate, ultraviolet pulse probe connects voltage output end, signaling conversion circuit by photoelectric conversion tube D1, signaling conversion circuit
It is made up of the signal shaping and filtering circuit being sequentially connected with, signal amplification circuit and I-V change-over circuit, it is characterised in that: described letter
Number plastic filter circuit outfan is also associated with voltage comparator circuit, and described voltage comparator circuit outfan connects central information
Processor, described voltage comparator circuit is used for the output voltage of signal shaping and filtering circuit compared with reference voltage, works as letter
When the voltage output value of number plastic filter circuit is more than reference voltage, voltage comparator circuit output high level, central information processing
Device counts once, when the voltage output value of signal shaping and filtering circuit is less than when comparing voltage, and voltage comparator circuit exports low electricity
Flat, central information processor does not counts；In corresponding ultraviolet pulse probe positions, light source generator, described photoelectric conversion tube D1 are set
Electrical signal be separately connected with central information processor, described light source generator is used for sending pulsed ultraviolet light directive ultraviolet
Probe pulse, ultraviolet pulse probe sends photoelectric conversion tube D1 to after receiving ultraviolet light pulse, photoelectric conversion tube D1 changes
Become the signal of telecommunication to feed back to central information processor, judge that ultraviolet pulse probe the most normally works by central information processor.
Above-mentioned switch cubicle arc light state monitoring apparatus, voltage comparator circuit uses operational amplifier LM358, described central authorities
Message handler uses single-chip microcomputer 89C52, the plus earth of described photoelectric conversion tube D1, and the negative electrode of photoelectric conversion tube D1 connects fortune
Calculating the inverting input of amplifier U2, resistance R1 one end is connected with photoelectric conversion tube D1 anode and accesses the anti-phase of operational amplifier U2
Input, resistance R1 other end ground connection, resistance R2 is connected between inverting input and the outfan of operational amplifier U2, computing
The outfan of amplifier U2 is connected to the inverting input of operational amplifier LM358, the inverting input of operational amplifier LM358
Another connection resistance R4 one end and diode D2 positive pole respectively, the negative pole of diode D2 connects another termination of resistance R3, resistance R3
Ground, the other end of resistance R4 connects power supply, and the in-phase input end of operational amplifier LM358 connects another of resistance R5, resistance R5
End connects power supply and provides reference voltage, and the outfan of operational amplifier LM358 connects 14 feet of single-chip microcomputer 89C52, single-chip microcomputer
25 feet of 89C52 connect photoelectric conversion tube D1 and the common port of resistance R1, the in-phase input end of operational amplifier U2 and earth terminal
Being in series with resistance R12 and electric capacity C1 between GND, the outfan of operational amplifier U2 connects the other end of resistance R6, resistance R6 even
Connect the inverting input of operational amplifier U3, between the inverting input of operational amplifier U3 and outfan, be connected resistance R10, fortune
The in-phase input end calculating amplifier U3 connects the other end ground connection of electric capacity C2, electric capacity C2, the in-phase input end of operational amplifier U3
Being followed by power supply by resistance R9 and resistance R7, the common port of resistance R9 and resistance R7 connects ground connection after resistance R8, operational amplifier
The outfan of U3 connects another termination voltage output end output voltage Vout of resistance R11, resistance R11, voltage output end and
The common port of resistance R11 connects the other end ground connection of electric capacity C3, electric capacity C3, operational amplifier U2 and the positive electricity of operational amplifier U3
Source input termination power, the negative supply input end grounding of operational amplifier U2 and operational amplifier U3.
Above-mentioned switch cubicle arc light state monitoring apparatus, described ultraviolet pulse is popped one's head in by single-mode fiber and photoelectric conversion tube
D1 connects.
The beneficial effects of the utility model are:
1, utilize ultraviolet pulse probe to receive the arc light of inside switch cabinet, and by optical filter and filter plate infrared ray and
Visible ray filters out, and stays ultraviolet lighting to be mapped on photoelectric conversion tube, and the signal of telecommunication is sent at rear signal by photoelectric conversion tube
Reason circuit, signal processing circuit is connected with voltage output end, it is achieved monitoring purpose；
2, voltage comparator circuit is devised, when the pulse voltage that ultraviolet monitoring circuit produces is more than when comparing voltage, central
Message handler counting once, otherwise, when pulse voltage less than compare voltage time, comparison circuit output be then low level, in
Centre message handler not counting, it is achieved evaluation to ultraviolet pulse probe monitors result in short time period so that monitoring number
According to more accurate；
3, the duty that light source generator fixed time testing ultraviolet pulse is popped one's head in is utilized, it may be judged whether break down, it is to avoid
Monitoring is interrupted, and causes the generation of electric power accident；
4, the lonely light fault in this utility model monitoring switch cabinet the most promptly and accurately, it is ensured that switch cabinet one-time equipment
Safety, simple in construction, make easy to use, production cost is low, has stronger practicality and promotional value.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model；
In Fig. 1: 1. ultraviolet pulse probe, 2. optical filter, 3. filter plate, 4. single-mode fiber.
Detailed description of the invention
As it is shown in figure 1, this switch cubicle arc light state monitoring apparatus, including ultraviolet pulse probe 1, on ultraviolet pulse probe 1
Installing optical filter 2 and filter plate 3, ultraviolet pulse probe 1 connects voltage by photoelectric conversion tube D1, signaling conversion circuit and exports
End, signaling conversion circuit is made up of signal shaping and filtering circuit, signal amplification circuit and I-V change-over circuit.Described signal shaping
Filter circuit outfan separately connects voltage comparator circuit, and described voltage comparator circuit outfan connects central information processing
Device, described voltage comparator circuit uses operational amplifier LM358, described operational amplifier LM358 for by comparison signal shaping
The output voltage of filter circuit is compared with reference voltage, when the voltage output value of signal shaping and filtering circuit is more than reference voltage
Time, operational amplifier LM358 exports high level, and central information processor counts once, when the voltage of signal shaping and filtering circuit
When output valve is less than reference voltage, operational amplifier LM358 output low level, central information processor does not counts.Described switch
Cabinet arc light state monitoring apparatus is additionally provided with the light source generator of corresponding ultraviolet pulse probe 1, the telecommunications of described photoelectric conversion tube D1
Number outfan is separately connected with another input of central information processor, and described light source generator is used for sending pulsed ultraviolet light directive
Ultraviolet pulse probe 1, ultraviolet pulse probe 1 sends photoelectric conversion tube D1 to, by photoelectric conversion tube after receiving ultraviolet light pulse
D1 is converted into the signal of telecommunication and feeds back to central information processor, to judge that ultraviolet pulse probe 1 the most normally works；Described central authorities letter
Breath processor uses single-chip microcomputer 89C52.Described ultraviolet pulse probe 1 is connected with photoelectric conversion tube D1 by single-mode fiber 4.
As in figure 2 it is shown, the plus earth of described photoelectric conversion tube D1, the negative electrode concatenation operation amplifier of photoelectric conversion tube D1
The inverting input of U2, resistance R1 one end and photoelectric conversion tube D1 anode are connected and access the inverting input of operational amplifier U2,
Resistance R1 other end ground connection, resistance R2 is connected between inverting input and the outfan of operational amplifier U2, operational amplifier
The outfan of U2 is connected to the inverting input of operational amplifier LM358, and the inverting input of operational amplifier LM358 is separately distinguished
Connecting resistance R4 one end and diode D2 positive pole, the negative pole of diode D2 connects the other end ground connection of resistance R3, resistance R3, resistance
The other end of R4 connects power supply, and the in-phase input end of operational amplifier LM358 connects the other end of resistance R5, resistance R5 and connects electricity
Source also provides reference voltage, and the outfan of operational amplifier LM358 connects 14 feet of single-chip microcomputer 89C52, the 25 of single-chip microcomputer 89C52
Foot connects photoelectric conversion tube D1 and the common port of resistance R1, goes here and there between in-phase input end and the earth terminal GND of operational amplifier U2
Being associated with resistance R12 and electric capacity C1, the outfan of operational amplifier U2 connects the other end concatenation operation of resistance R6, resistance R6 and amplifies
The inverting input of device U3, is connected resistance R10, operational amplifier U3 between the inverting input of operational amplifier U3 and outfan
In-phase input end connect electric capacity C2, electric capacity C2 other end ground connection, the in-phase input end of operational amplifier U3 pass through resistance R9
Being followed by power supply with resistance R7, the common port of resistance R9 and resistance R7 connects ground connection after resistance R8, the outfan of operational amplifier U3
Connect another termination voltage output end output voltage Vout, voltage output end and public affairs of resistance R11 of resistance R11, resistance R11
End connects the other end ground connection of electric capacity C3, electric capacity C3 altogether, the positive supply input termination of operational amplifier U2 and operational amplifier U3
Power supply, the negative supply input end grounding of operational amplifier U2 and operational amplifier U3.Operational amplifier U2 and peripheral circuit composition
Signal shaping and filtering circuit, operational amplifier U3 and peripheral circuit composition signal amplification circuit thereof and I-V change-over circuit, computing is put
Big device LM358 and peripheral circuit composition voltage comparator circuit thereof.
Operation principle:
During use, by the arc light of ultraviolet pulse probe 1 reception inside switch cabinet, and by optical filter 2 and filter plate 3
Infrared ray and visible ray filter out, and stay ultraviolet lighting to be mapped on photoelectric conversion tube D1, and photoelectric conversion tube D1 can produce photoelectric current
Reach rear signal and process circuit, carry out voltage ratio relatively by operational amplifier LM358, when the generation of signal shaping and filtering circuit
When pulse voltage is more than reference voltage, central information processor just counting once, otherwise, when pulse voltage is less than reference voltage
Time, comparison circuit output low level, central information processor not counting；The signal of telecommunication that photoelectric conversion tube D1 produces is through shaping
Filtering, signal are amplified and after I-V conversion, are finally carried out output by voltage output end and realize monitoring；The work of ultraviolet pulse probe 1
Status monitoring sends pulsed ultraviolet light by the every 10s of light source generator and receives to ultraviolet pulse probe 1, ultraviolet pulse probe 1
Return photoelectric conversion tube D1 after ultraviolet light pulse, after central information processor receives the potential pulse of photoelectric conversion tube D1, send out
Going out high level signal and determine that ultraviolet pulse is popped one's head in 1 working properly, no signal determines when receiving that ultraviolet pulse probe 1 breaks down.
This device has good inductive pick-up ability to the characteristic light of arc light composition, is operated in day-old chick, can be effectively
Monitoring arc optical signal, and discharged the impact of daylight etc., it is possible to the lonely light fault in accurate measurements switch cabinet one-time equipment, and
Have from monitoring capability.
Claims (3)
1. a switch cubicle arc light state monitoring apparatus, pops one's head in including ultraviolet pulse, ultraviolet pulse probe is upper install optical filter and
Filter plate, ultraviolet pulse probe by photoelectric conversion tube D1, signaling conversion circuit connect voltage output end, signaling conversion circuit by
Signal shaping and filtering circuit, signal amplification circuit and the I-V change-over circuit composition being sequentially connected with, it is characterised in that: described signal
Plastic filter circuit outfan is also associated with voltage comparator circuit, and described voltage comparator circuit outfan connects to be had at central information
Reason device, described voltage comparator circuit is used for the output voltage of signal shaping and filtering circuit compared with reference voltage, works as signal
When the voltage output value of plastic filter circuit is more than reference voltage, voltage comparator circuit output high level, central information processor
Count once, when the voltage output value of signal shaping and filtering circuit is less than and compares voltage, voltage comparator circuit output low level,
Central information processor does not counts；In corresponding ultraviolet pulse probe positions, light source generator is set, described photoelectric conversion tube D1's
Electrical signal is separately connected with central information processor, and described light source generator is used for sending pulsed ultraviolet light directive ultraviolet arteries and veins
Punching probe, ultraviolet pulse probe sends photoelectric conversion tube D1 to after receiving ultraviolet light pulse, photoelectric conversion tube D1 is converted into
The signal of telecommunication feeds back to central information processor, judges that ultraviolet pulse probe the most normally works by central information processor.
Switch cubicle arc light state monitoring apparatus the most according to claim 1, it is characterised in that: described voltage comparator circuit is adopted
Using operational amplifier LM358, described central information processor uses single-chip microcomputer 89C52, and the anode of described photoelectric conversion tube D1 connects
Ground, the inverting input of the negative electrode concatenation operation amplifier U2 of photoelectric conversion tube D1, resistance R1 one end and photoelectric conversion tube D1 sun
Extremely being connected and access the inverting input of operational amplifier U2, resistance R1 other end ground connection, resistance R2 is connected to operational amplifier U2
Inverting input and outfan between, the outfan of operational amplifier U2 is connected to the anti-phase input of operational amplifier LM358
End, the inverting input of operational amplifier LM358 connects resistance R4 one end and diode D2 positive pole the most respectively, and diode D2's is negative
Pole connects the other end ground connection of resistance R3, resistance R3, and the other end of resistance R4 connects power supply, the homophase of operational amplifier LM358
Input connects the other end of resistance R5, resistance R5 and connects power supply and provide reference voltage, the outfan of operational amplifier LM358
Connecting 14 feet of single-chip microcomputer 89C52,25 feet of single-chip microcomputer 89C52 connect photoelectric conversion tube D1 and the common port of resistance R1, computing
It is in series with resistance R12 and electric capacity C1, the outfan of operational amplifier U2 between in-phase input end and the earth terminal GND of amplifier U2
Connect the inverting input of the other end concatenation operation amplifier U3 of resistance R6, resistance R6, the anti-phase input of operational amplifier U3
Holding and be connected resistance R10 between outfan, the in-phase input end of operational amplifier U3 connects another termination of electric capacity C2, electric capacity C2
Ground, the in-phase input end of operational amplifier U3 is followed by power supply, resistance R9 and the common port of resistance R7 by resistance R9 and resistance R7
Connecting ground connection after resistance R8, the outfan of operational amplifier U3 connects another termination voltage output end of resistance R11, resistance R11
And output voltage Vout, the common port of voltage output end and resistance R11 connects the other end ground connection of electric capacity C3, electric capacity C3, computing
The positive supply input termination power of amplifier U2 and operational amplifier U3, operational amplifier U2 and the negative supply of operational amplifier U3
Input end grounding.
Switch cubicle arc light state monitoring apparatus the most according to claim 1, it is characterised in that: described ultraviolet pulse probe is logical
Cross single-mode fiber to be connected with photoelectric conversion tube D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623989.6U CN205679713U (en) | 2016-06-23 | 2016-06-23 | Switch cubicle arc light state monitoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623989.6U CN205679713U (en) | 2016-06-23 | 2016-06-23 | Switch cubicle arc light state monitoring apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN205679713U true CN205679713U (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620623989.6U Active CN205679713U (en) | 2016-06-23 | 2016-06-23 | Switch cubicle arc light state monitoring apparatus |
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| Country | Link |
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| CN (1) | CN205679713U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988285A (en) * | 2018-06-26 | 2018-12-11 | 南京五石金传感技术有限公司 | A kind of arc light photoelectricity transmitter |
| CN109141633A (en) * | 2018-10-19 | 2019-01-04 | 江苏未来智慧信息科技有限公司 | A kind of electric power arc detection device based on ultraviolet light |
| CN109738768A (en) * | 2018-12-10 | 2019-05-10 | 国网浙江省电力有限公司金华供电公司 | A kind of switchgear electric arc on-line measuring device |
-
2016
- 2016-06-23 CN CN201620623989.6U patent/CN205679713U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988285A (en) * | 2018-06-26 | 2018-12-11 | 南京五石金传感技术有限公司 | A kind of arc light photoelectricity transmitter |
| CN109141633A (en) * | 2018-10-19 | 2019-01-04 | 江苏未来智慧信息科技有限公司 | A kind of electric power arc detection device based on ultraviolet light |
| CN109738768A (en) * | 2018-12-10 | 2019-05-10 | 国网浙江省电力有限公司金华供电公司 | A kind of switchgear electric arc on-line measuring device |
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