CN103441473A - Arc light protection system suitable for single-bus section - Google Patents
Arc light protection system suitable for single-bus section Download PDFInfo
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- CN103441473A CN103441473A CN2013103539885A CN201310353988A CN103441473A CN 103441473 A CN103441473 A CN 103441473A CN 2013103539885 A CN2013103539885 A CN 2013103539885A CN 201310353988 A CN201310353988 A CN 201310353988A CN 103441473 A CN103441473 A CN 103441473A
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- 238000002955 isolation Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 12
- 230000006378 damage Effects 0.000 abstract description 7
- 238000010891 electric arc Methods 0.000 description 4
- 208000033999 Device damage Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses an arc light protection system suitable for single-bus section. The arc light protection system suitable for the single-bus section comprises a first section bus, a second section bus, a first section isolation disconnecting link, a second section isolation disconnecting link, a first section inlet wire breaker and a second section inlet wire breaker, and further comprises a section breaker, a first over-current detection unit, a second over-current detection unit, a first section outlet wire breaker, a second section outlet wire breaker, switch cabinets and arc light sensors, wherein the first section isolation disconnecting link, the second section isolation disconnecting link, the first section inlet wire breaker and the second section inlet wire breaker are connected with the first section bus and the second section bus respectively. All the arc light sensors of the two sets of switch cabinets are connected to a first arc light collecting unit and a second arc light collecting unit respectively, and the second arc light collecting unit is connected with an arc light protection main unit through optical fibers. According to the arc light protection system suitable for the single-bus section, medium and low voltage switch cabinets can be guaranteed to switch off faulty lines fast and accurately when arc light faults occur, the duration of fault arc light is restrained fundamentally, harm caused by the arc light is eliminated, enlarging of faults is avoided, and equipment and personal safety is guaranteed.
Description
Technical field
The present invention relates to a kind of arc light protecting system that is applicable to single mother partition, be applicable to the arc protection of middle-low voltage switch cabinet bus.
Background technology
According to GB/T 14285-2006 " relaying protection and automatic safety device technical regulation ", bus protection is not installed in the following electric power system of 35kV, generally adopts overcurrent protection to protect in support.Yet because the outlet on middle voltage bus bar is more, frequent operation, the distance of three-phase conductor wire spacing and the earth is closer, the reasons such as apparatus insulated aging and mechanical wear, the fault of middle voltage bus bar increases thereupon.For the safe operation that guarantees transformer and bus switchgear and escape the inner arcing time, adopt arc light protection system to increase undoubtedly the fail safe of electric power system.Inside switch cabinet arc short-circuit fault is a kind of very serious fault in distribution system, it tend to cause catastrophic consequence, the various fault electric arc effects that the huge energy that its internal arc burning discharges produces, seriously burn expensive switchgear, short-circuit current rush can damage main transformer, causes long-time power failure.More seriously, it also can cause near staff human casualty accident.Start to pay close attention to the seriousness of internal faults of switch cabinet electric arc to personnel's injury from the sixties in 20th century abroad, and the internal faults of switch cabinet characteristic is carried out to deep experimental study.Develop in the early 1990s the middle-low voltage switch cabinet protection system based on detecting arclight, and start in electric power system, industrial enterprise put into operation.In recent years, in more American-European countries, increasing user adopts electric arc protection as the protection of middle-low voltage switch cabinet internal fault, and in some these protective devices of country have become, the standard configuration of low-tension switch cabinet.External application experiment shows; arc light protection system provides personnel protection except the damaged condition that alleviates to greatest extent switchgear and near staff; also can greatly reduce the interruption duration that internal faults of switch cabinet causes, thereby its application also has very large economic benefit concerning the user.
The damaged condition under the various arcing times that Fig. 1 is data introduction both domestic and external, equipment caused:
85ms: not significant destruction, generally after the check insulation, can come into operation.
100ms: the cable insulation weak spot takes fire, and system is damaged.
200ms: bus takes fire, and damages comparatively serious.
500ms: device damage is very serious, and on-the-spot personnel may be subject to serious injury.
Summary of the invention
the technical problem to be solved in the present invention is: for the situation that the time is long, fault coverage enlarges of current domestic breaking arc fault, while arc light protecting system in the market all is not suitable for the application scenario of single mother partition, and a kind of arc light protecting system that is applicable to single mother partition is provided; Be intended to solve in the system of single mother partition, within the very first time of arbitrary bus generation arc fault, the fault of excision bus and inside switch cabinet, avoid the further expansion of fault, protection equipment and personal safety.
The technical solution adopted in the present invention is:
A kind of arc light protecting system that is applicable to single mother partition, include I section bus, II section bus and respectively with I section bus, the I section isolation switch that II section bus connects, II section isolation switch is characterized in that: described I section bus, II section bus also is connected with respectively I section lead-in circuit breaker, II section lead-in circuit breaker, be connected with section breaker between I section isolation switch and II section isolation switch, I section lead-in circuit breaker, II section lead-in circuit breaker is connected with respectively I section busbar transformer, II section busbar transformer, I section busbar transformer, the other end of II section busbar transformer is connected with respectively over-current detection unit one, over-current detection unit two, over-current detection unit one, over-current detection unit two is connected with respectively I section wire-outgoing breaker, II section wire-outgoing breaker, I section wire-outgoing breaker, II section wire-outgoing breaker is connected with the line outlet of two groups of switch cubicles respectively, in two groups of switch cubicles, is respectively equipped with a plurality of arc photosensors, and each arc photosensor of two groups of switch cubicles accesses respectively arc light collecting unit one, arc light collecting unit two, arc light collecting unit one is connected with arc light collecting unit two and is connected with respectively arc light tripping operation outlet one, arc light tripping operation outlet two, arc light collecting unit two is connected with the arc protection master unit by optical fiber, the arc protection master unit, arc light collecting unit one, arc light collecting unit two is connected with power module jointly, the arc protection master unit also with I section isolation switch, II section isolation switch, section breaker, over-current detection unit one, over-current detection unit two, I section lead-in circuit breaker, II section lead-in circuit breaker, I section wire-outgoing breaker, II section wire-outgoing breaker connects.
Described a kind of arc light protecting system that is applicable to single mother partition is characterized in that: described power module adopts 24VDC, 5VDC power module.
Described a kind of arc light protecting system that is applicable to single mother partition is characterized in that: described arc photosensor includes the arc light detecting probe, and the arc light detecting probe adopts lens type arc light detecting probe.
Described a kind of arc light protecting system that is applicable to single mother partition is characterized in that: 2 arc light detecting probes at least are installed in described each switch cubicle.
The invention has the beneficial effects as follows:
In single mother partition system, the present invention can guarantee that middle-low voltage switch cabinet is quick, accurately selectable open failure circuit arc fault occurs, and fundamentally the duration of fault restriction electric arc, eliminates the harm that arc light causes, avoid the expansion of fault, assurance equipment and personal safety.
The accompanying drawing explanation
Fig. 1 is the damaged condition schematic diagram under the various arcing times, equipment caused.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
Shown in Fig. 2, a kind of arc light protecting system that is applicable to single mother partition, include I section bus, II section bus and respectively with I section bus, the I section isolation switch 5 that II section bus connects, II section isolation switch 18, I section bus, II section bus also is connected with respectively I section lead-in circuit breaker 15, II section lead-in circuit breaker 6, be connected with section breaker 4 between I section isolation switch 5 and II section isolation switch 18, I section lead-in circuit breaker 15, II section lead-in circuit breaker 6 is connected with respectively I section busbar transformer 3, II section busbar transformer 8, I section busbar transformer 3, the other end of II section busbar transformer 8 is connected with respectively over-current detection unit 10, over-current detection unit 9, over-current detection unit 10, over-current detection unit 9 is connected with respectively I section wire-outgoing breaker 2, II section wire-outgoing breaker 7, I section wire-outgoing breaker 2, II section wire-outgoing breaker 7 is connected with the line outlet of two groups of switch cubicles 20 respectively, and each arc photosensor 1 that is respectively equipped with 1, two group of switch cubicle 20 of a plurality of arc photosensors in two groups of switch cubicles 20 accesses respectively arc light collecting unit 12, arc light collecting unit 13, arc light collecting unit 12 is connected with arc light collecting unit 13 and is connected with respectively arc light tripping operation outlet 16, arc light tripping operation outlet 17, arc light collecting unit 13 is connected with arc protection master unit 11 by optical fiber 14, arc protection master unit 11, arc light collecting unit 12, arc light collecting unit 13 is connected with power module 19 jointly, arc protection master unit 11 also with I section isolation switch 5, II section isolation switch 18, section breaker 4, over-current detection unit 10, over-current detection unit 9, I section lead-in circuit breaker 15, II section lead-in circuit breaker 6, I section wire-outgoing breaker 2, II section wire-outgoing breaker 7 connects.
Arc photosensor 1 includes the arc light detecting probe, and the arc light detecting probe adopts lens type arc light detecting probe.
2 arc light detecting probes at least are installed in each switch cubicle 20.
Operation principle of the present invention is:
Arc photosensor 1 in switch cubicle 20 is transferred to arc light collecting unit 12 and 13 by the arc light detected by special optic fibre 14; the arc light collecting unit selects arc light tripping operation outlet 16 and 17 to output to the tripping operation outlet port unit according to the arc light collected, and arc optical signal is transferred to arc protection master unit 11 by special optic fibre simultaneously.Arc protection master unit 11 is according to the arc optical signal collected; the over-current signal that over-current detection unit 9 and 10 transmission come; the contact point signal of I section isolation switch 5; the contact point signal of II section isolation switch 18; the contact point signal of section breaker 4, arc protection master unit 11 is exported trip signal to I section wire-outgoing breaker 2 according to control logic, II section wire-outgoing breaker 7; I section lead-in circuit breaker 15, II section lead-in circuit breaker 6.
The invention solves original protection system and can not disconnect in time the arc fault point, cause fault to enlarge, the problem of device damage, improved the reliability of power supply to a certain extent, protected equipment and personal safety.
Claims (4)
1. an arc light protecting system that is applicable to single mother partition, include I section bus, II section bus and respectively with I section bus, the I section isolation switch that II section bus connects, II section isolation switch is characterized in that: described I section bus, II section bus also is connected with respectively I section lead-in circuit breaker, II section lead-in circuit breaker, be connected with section breaker between I section isolation switch and II section isolation switch, I section lead-in circuit breaker, II section lead-in circuit breaker is connected with respectively I section busbar transformer, II section busbar transformer, I section busbar transformer, the other end of II section busbar transformer is connected with respectively over-current detection unit one, over-current detection unit two, over-current detection unit one, over-current detection unit two is connected with respectively I section wire-outgoing breaker, II section wire-outgoing breaker, I section wire-outgoing breaker, II section wire-outgoing breaker is connected with the line outlet of two groups of switch cubicles respectively, in two groups of switch cubicles, is respectively equipped with a plurality of arc photosensors, and each arc photosensor of two groups of switch cubicles accesses respectively arc light collecting unit one, arc light collecting unit two, arc light collecting unit one is connected with arc light collecting unit two and is connected with respectively arc light tripping operation outlet one, arc light tripping operation outlet two, arc light collecting unit two is connected with the arc protection master unit by optical fiber, the arc protection master unit, arc light collecting unit one, arc light collecting unit two is connected with power module jointly, the arc protection master unit also with I section isolation switch, II section isolation switch, section breaker, over-current detection unit one, over-current detection unit two, I section lead-in circuit breaker, II section lead-in circuit breaker, I section wire-outgoing breaker, II section wire-outgoing breaker connects.
2. a kind of arc light protecting system that is applicable to single mother partition according to claim 1, is characterized in that: described power module employing 24VDC, 5VDC power module.
3. a kind of arc light protecting system that is applicable to single mother partition according to claim 1 is characterized in that: described arc photosensor includes the arc light detecting probe, and the arc light detecting probe adopts lens type arc light detecting probe.
4. according to the described a kind of arc light protecting system that is applicable to single mother partition of claim 1 or 3, it is characterized in that: 2 arc light detecting probes at least are installed in described each switch cubicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310353988.5A CN103441473B (en) | 2013-08-14 | 2013-08-14 | A kind of arc light protecting system being applicable to single mother partition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310353988.5A CN103441473B (en) | 2013-08-14 | 2013-08-14 | A kind of arc light protecting system being applicable to single mother partition |
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| CN103441473A true CN103441473A (en) | 2013-12-11 |
| CN103441473B CN103441473B (en) | 2016-03-30 |
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| CN201310353988.5A Active CN103441473B (en) | 2013-08-14 | 2013-08-14 | A kind of arc light protecting system being applicable to single mother partition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466702A (en) * | 2014-12-01 | 2015-03-25 | 广西电网有限责任公司玉林供电局 | 10kV switch cabinet rapid arc-control device |
| CN104836212A (en) * | 2015-01-28 | 2015-08-12 | 合肥天海电气技术有限公司 | Arc light protection system suitable for double-power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100142103A1 (en) * | 2007-03-16 | 2010-06-10 | Carsten Thrue | Compact Secondary Substation Comprising A Fault Protection System, A Method For Fault Protection In A Compact Secondary Substation, And A Control Unit For Performing The Method |
| CN201629565U (en) * | 2010-02-10 | 2010-11-10 | 保定天威恒通电气有限公司 | Switch cabinet arc light protection system with compact structure |
| 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 |
-
2013
- 2013-08-14 CN CN201310353988.5A patent/CN103441473B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100142103A1 (en) * | 2007-03-16 | 2010-06-10 | Carsten Thrue | Compact Secondary Substation Comprising A Fault Protection System, A Method For Fault Protection In A Compact Secondary Substation, And A Control Unit For Performing The Method |
| CN201629565U (en) * | 2010-02-10 | 2010-11-10 | 保定天威恒通电气有限公司 | Switch cabinet arc light protection system with compact structure |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466702A (en) * | 2014-12-01 | 2015-03-25 | 广西电网有限责任公司玉林供电局 | 10kV switch cabinet rapid arc-control device |
| CN104836212A (en) * | 2015-01-28 | 2015-08-12 | 合肥天海电气技术有限公司 | Arc light protection system suitable for double-power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103441473B (en) | 2016-03-30 |
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Effective date of registration: 20170815 Address after: Ji Road in Shushan District of Hefei City, Anhui Province, No. 335 230031 Patentee after: HEFEI TIANHAI ELECTRIC APPARATUS TECHNOLOGY CO.,LTD. Address before: Ji Road Shushan Economic Development Zone of Hefei City, Anhui province 230031 No. 335 Patentee before: HEFEI TIANHAI ELECTRICAL TECHNOLOGY Co.,Ltd. |
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Address after: No. 335 Xueji Road, Shushan District, Hefei City, Anhui Province, 230031 Patentee after: Hefei Ousa Tianhai Electrical Technology Co.,Ltd. Address before: No. 335 Xueji Road, Shushan District, Hefei City, Anhui Province, 230031 Patentee before: HEFEI TIANHAI ELECTRIC APPARATUS TECHNOLOGY CO.,LTD. |