CN108258659A - Intelligent arc light protecting device - Google Patents
Intelligent arc light protecting device Download PDFInfo
- Publication number
- CN108258659A CN108258659A CN201810226476.5A CN201810226476A CN108258659A CN 108258659 A CN108258659 A CN 108258659A CN 201810226476 A CN201810226476 A CN 201810226476A CN 108258659 A CN108258659 A CN 108258659A
- Authority
- CN
- China
- Prior art keywords
- arc light
- main control
- control unit
- arc
- switchgear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000523 sample Substances 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H02H7/226—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 for wires or cables, e.g. heating wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
- H02H1/003—Fault detection by injection of an auxiliary voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
- H02H1/0084—Details of emergency protective circuit arrangements concerning transmission of signals by means of pilot wires or a telephone network; watching of these wires
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention relates to a kind of intelligent arc light protecting devices, including monitoring backstage, switchgear, arc light unit and main control unit, the main control unit installation by adhering is in the cabinet door of switchgear, infrared sensor is set in the cabinet door of switchgear, the tripping of main control unit is set between infrared sensor and the working power of main control unit, over-current detector is provided on arc light unit, it is connected between arc light unit and main control unit by optical fiber, pass through twisted pair line connection between main control unit and monitoring backstage, the main control unit includes photoelectric converter, current start element, current detector, arc probe detector, the arc light unit is mounted in each interval in switchgear.It is simple in structure, it is ensured that breakdown loss is minimized, is quick handling failure, restores electricity and create condition by operating personnel's safety, and using overcurrent and the dual criterion of arc light, reliability is high.
Description
Technical field
The invention belongs to electric system, are related to middle voltage bus bar system, and in particular to a kind of intelligence arc light protecting device.
Background technology
In, low-voltage bus bar occur short trouble when, generated arclight can cause greatly to injure to equipment and personnel.
But dedicated quick bus protection is not configured in current middle voltage bus bar system at home generally, but rely on upper level transformation
The back-up protection excision busbar short-circuit failure of device, this results in the extensions of fault clearing time, increase the damage journey of equipment
Degree, may cause the accident further expansion when destroying serious, threaten the stable operation of system, which has caused professional in the industry
The great attention of personage.
Arclight Producing reason has the artificial origin's (such as mistakenly entering charged chamber) and open that arclight generates in switchgear
Close the technical reason (maloperation of such as equipment fault and charging equipment) that arclight generates in equipment.Interval hair inside switchgear
Raw failure and he the arclight that generates causes the pressure and temperature in switchgear to increase sharply, such as cut off not in time, will cause with
Lower significant damage：Arclight central temperature is equivalent to 2 times of sun surface temperature, about 20000 DEG C, since overheat will lead to copper
Row, aluminium row melt down and gasify；Cable melts down, and cable cover(ing) catches fire；Overheat causes pressure to rise, and switchgear is made to explode；Switch is set
Standby high vibration, loosens retaining element；Upper level transformer is made to bear closely short trouble impact, what fault current generated
Electric power may cause deformation of transformer winding that turn-to-turn short circuit occurs；The arc light shock wave that failure generates is quick-fried with the speed of 300m/s
Hair, can destroy any substance in way, if involving straight-flow system in station causes whole station direct current dead electricity, will cause the weight that can not be made up
Big loss etc..
During the country is used at present, the protection limitation of low-voltage bus bar it is big, transformer backup overcurrent protection actuation time is long,
It cannot play the role of being effectively protected, although the transformer backup overcurrent protection time of feeder line fast tripping protection locking shortens,
Still cannot be before equipment to be severely damaged by failure removal, bus differential protection scope is limited by CT installation sites, is connect
Line is complicated, and CT requirements are high.
Invention content
It is simple in structure it is an object of the present invention to provide a kind of intelligent arc light protecting device, it is ensured that operating personnel's safety, by failure
Loss minimizes, and is quick handling failure, restores electricity and create condition, using overcurrent and the dual criterion of arc light, reliability
It is high.
In order to achieve the goal above, the technical solution adopted by the present invention is：A kind of intelligence arc light protecting device, including monitoring
From the background, switchgear, arc light unit and main control unit, the main control unit installation by adhering is in the cabinet door of switchgear, switch
Infrared sensor is set in the cabinet door of cabinet, the tripping of main control unit be set to infrared sensor and main control unit working power it
Between, over-current detector is provided on arc light unit, is connected between arc light unit and main control unit by optical fiber, main control unit and
Photoelectric converter, current start element, current detecting are included by twisted pair line connection, the main control unit between monitoring backstage
Device, arc probe detector, the arc light unit are mounted in each interval in switchgear.
Further, the arc light unit includes 36 arc probes, the arc probe face protected object.
Further, it is provided with alarm on infrared sensor.
Further, the arc probe is passive arc photosensor.
The technical effects of the invention are that：The configuration of the present invention is simple using arc light detecting and the double criterions of overcurrent detection, is protected
Quick action, reliability height are protected, has been filled up in the country, the blank of the special quick bus protection of low pressure.Present invention can assure that
Operating personnel's safety, breakdown loss is minimized, and is quick handling failure, is restored electricity and create condition.It mitigates or reduces
Injury of the arclight for human body；Mitigate or reduce damage of the arclight short trouble for equipment；Shorten arclight failure to cut
Except the time, avoid involving straight-flow system in station and cause heavy losses；The time that equipment is stopped transport caused by arclight failure is reduced, more
It restores electricity soon.
Description of the drawings
Fig. 1 is the infrastructure diagram of the present invention；
Fig. 2 is the structure chart that the main control unit of the present invention is installed on switchgear.
Specific embodiment
With reference to attached drawing, a kind of intelligence arc light protecting device, including monitoring backstage 1, switchgear 2, arc light unit 3 and master control list
Member 4,4 installation by adhering of main control unit sets infrared sensor in the cabinet door of switchgear 2 in the cabinet door of switchgear 2,
The tripping of main control unit 4 is set between the working power of infrared sensor and main control unit 4, is provided on arc light unit 3
Current detector is connected between arc light unit 3 and main control unit 4 by optical fiber, is passed through between main control unit 4 and monitoring backstage 1
Twisted pair line connection, the main control unit 4 include photoelectric converter, current start element, current detector, arc probe detection
Device, the arc light unit 3 are mounted in each interval in switchgear 2.
Further, the arc light unit 3 includes 36 arc probes, and the arc probe face is by protection pair
As.
Further, the current start element includes Sudden Changing Rate starting element and electric current constant starting element.
It is connected between the arc probe of main control unit 4 and arc light unit 3 using optical fiber (optical cable).The present invention passes through master control list
Monitoring system communication in member 4 and station, main control unit 4 can configure standard MODBUS communications.Arc probe (arc photosensor) is installed
In being respectively spaced in switchgear 2, realize and from simple to complex, selectively protect.Arc probe as photoinduction element,
Occur to detect increased light intensity, and pass through optical fiber and send optical signal to main control unit 4 suddenly during arc fault, opto-electronic conversion exists
Photoelectric converter on main control unit 4 is completed.The electric arc protection of the present invention is grouped based on current acquisition unit, and in total 36
A arc probe, which can adjust, to be associated on any one group of current signal.When arc light unit 3 transmits optical signal from arc probe
During to main control unit 4, and at the same time current start element movement, electric arc protection action, current start element are divided into Sudden Changing Rate
Starting element and electric current constant starting element, two elements take or logic, and the single criterion conduct of arc optical signal action may be selected in device
Action logic judges.Arc probe detection controller realizes arc photosensor abnormality detection, if being adjusted in arc protection as arc light
When criterion and electric current criterion are taken with logic, if detecting, probe action is more than 5s and no current element movement, shields the arc light
Sensor, concurrent sensor abnormality protection.Current detecting controller realizes current unit abnormality detection, and device detects input in real time
Current unit self-test voltage, when the self-test electric voltage exception of current unit, shield the current unit and hair current unit it is different
Often report.The arc light unit 3 is mounted in each interval in switchgear 2, and the arc photosensor of such arc light unit 3 is not straight
It connects and is exposed under sun light direct beam or any other strong light.And the visual field of arc photosensor and protected area is unobstructed.
When personnel are close to the switchgear 2 for loading main control unit 4, infrared sensor sensing, inductive signal transmit and control main control unit 4
Tripping, which starts, ensures operating personnel's safety, and breakdown loss is minimized, and is quick handling failure, restores electricity and create item
Part.The configuration of the present invention is simple, using arc light detecting and the double criterions of overcurrent detection, protection act speed is fast, reliability is high, fills up
In domestic, the blank of low pressure special quick bus protection.Wherein, trip(ping) circuit is using multichannel high-speed relay and conventional relay
Device selects for user.The high-speed relay outlet trip time is selected to be less than 5ms, selects the conventional relays outlet trip time
Less than 7ms, it is faster than traditional bus protection, to the control of the inside arc fault of switchgear total mute time within 100ms.This
Invention may insure operating personnel's safety, and breakdown loss is minimized, and is quick handling failure, restores electricity and create item
Part.Mitigate or reduce injury of the arclight for human body；Mitigate or reduce damage of the arclight short trouble for equipment；Shorten
Arclight fault clearing time avoids involving straight-flow system in station and causes heavy losses；Reduce the equipment caused by arclight failure
The time of stoppage in transit more quickly restores power supply.
Further, it is provided with alarm on infrared sensor.Tripping starts same alarm, security performance higher in this way.
Further, the arc probe is passive arc photosensor.
Using passive arc photosensor, filtering interference light function, reliability higher.
Claims (5)
1. a kind of intelligence arc light protecting device, it is characterised in that：Including monitoring backstage (1), switchgear (2), arc light unit (3) and
Main control unit (4), the main control unit (4) installation by adhering is in the cabinet door of switchgear (2), in the cabinet door of switchgear (2)
Infrared sensor is set, the tripping of main control unit (4) is set between the working power of infrared sensor and main control unit (4),
Over-current detector is provided on arc light unit (3), is connected between arc light unit (3) and main control unit (4) by optical fiber, master control
It is opened between unit (4) and monitoring backstage (1) by twisted pair line connection, the main control unit (4) including photoelectric converter, electric current
Dynamic element, current detecting controller, arc probe detection controller, the arc light unit (3) is in switchgear (2)
In each interval.
2. intelligence arc light protecting device according to claim 1, it is characterised in that：The arc light unit (3) is including 36
A arc probe, the arc probe face protected object.
3. intelligence arc light protecting device according to claim 1, it is characterised in that：The current start element includes prominent
Variable starting element and electric current constant starting element.
4. intelligence arc light protecting device according to claim 1, it is characterised in that：Alarm is provided on infrared sensor
Device.
5. intelligence arc light protecting device according to claim 2, it is characterised in that：The arc probe is passive arc light
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810226476.5A CN108258659A (en) | 2018-03-19 | 2018-03-19 | Intelligent arc light protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810226476.5A CN108258659A (en) | 2018-03-19 | 2018-03-19 | Intelligent arc light protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108258659A true CN108258659A (en) | 2018-07-06 |
Family
ID=62747202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810226476.5A Pending CN108258659A (en) | 2018-03-19 | 2018-03-19 | Intelligent arc light protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258659A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601480U (en) * | 2009-12-31 | 2010-10-06 | 南京弘毅电气自动化有限公司 | Arc light protecting system |
| CN202513561U (en) * | 2012-04-28 | 2012-10-31 | 四川省电力公司自贡电业局 | Arc light protection system of high-voltage switch cabinet |
| CN203135421U (en) * | 2013-03-19 | 2013-08-14 | 山东电力集团公司济南供电公司 | Arc light protecting system |
| CN206533120U (en) * | 2017-02-22 | 2017-09-29 | 保定佰泓电气科技有限公司 | Switch cubicle arc light protecting system and feeder cabinet arc light protecting system |
| CN208028571U (en) * | 2018-03-19 | 2018-10-30 | 科姆勒电气（安徽）有限公司 | Intelligent arc light protecting device |
-
2018
- 2018-03-19 CN CN201810226476.5A patent/CN108258659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601480U (en) * | 2009-12-31 | 2010-10-06 | 南京弘毅电气自动化有限公司 | Arc light protecting system |
| CN202513561U (en) * | 2012-04-28 | 2012-10-31 | 四川省电力公司自贡电业局 | Arc light protection system of high-voltage switch cabinet |
| CN203135421U (en) * | 2013-03-19 | 2013-08-14 | 山东电力集团公司济南供电公司 | Arc light protecting system |
| CN206533120U (en) * | 2017-02-22 | 2017-09-29 | 保定佰泓电气科技有限公司 | Switch cubicle arc light protecting system and feeder cabinet arc light protecting system |
| CN208028571U (en) * | 2018-03-19 | 2018-10-30 | 科姆勒电气（安徽）有限公司 | Intelligent arc light protecting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |