CN103441473B - A kind of arc light protecting system being applicable to single mother partition - Google Patents
A kind of arc light protecting system being applicable to single mother partition Download PDFInfo
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- CN103441473B CN103441473B CN201310353988.5A CN201310353988A CN103441473B CN 103441473 B CN103441473 B CN 103441473B CN 201310353988 A CN201310353988 A CN 201310353988A CN 103441473 B CN103441473 B CN 103441473B
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- breaker
- bus
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- 238000005192 partition Methods 0.000 title claims abstract description 17
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 12
- 230000006378 damage Effects 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 abstract description 6
- 208000033999 Device damage Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect 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
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The invention discloses a kind of arc light protecting system being 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, I section lead-in circuit breaker, II section lead-in circuit breaker, also include section breaker, over-current detection unit one, over-current detection unit two, there is I section wire-outgoing breaker, II section wire-outgoing breaker, switch cubicle, arc photosensor, each arc photosensor of two groups of switch cubicles accesses arc light collecting unit one respectively, arc light collecting unit two, arc light collecting unit two is connected with arc protection master unit by optical fiber.The present invention can ensure that middle-low voltage switch cabinet is quick, accurate selectively open failure circuit at generation arc fault, the fundamentally duration of fault restriction electric arc, eliminate the harm that arc light causes, avoid the expansion of fault, ensure equipment and personal safety.
Description
Technical field
The present invention relates to a kind of arc light protecting system being applicable to single mother partition, be applicable to the arc protection of middle-low voltage switch cabinet bus.
Background technology
According to GB/T14285-2006 " relaying protection and automatic safety device technical regulation ", below 35kV electric power system does not install bus protection, and the general overcurrent protection that adopts is protected in support.But due to the outlet on middle voltage bus bar more, frequent operation, the reasons such as three-phase conductor wire spacing is closer with the distance of the earth, apparatus insulated aging and mechanical wear, the fault of middle voltage bus bar increases thereupon.In order to ensure the safe operation of transformer and bus switchgear and escape the inner arcing time, arc light protection system is adopted to add the fail safe of electric power system undoubtedly.Inside switch cabinet arc short-circuit fault is a kind of very serious fault in distribution system, its generation often causes catastrophic consequence, the various fault electric arc effects that the huge energy that the burning of its internal arc 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 the human casualty accident of neighbouring staff.Abroad start to pay close attention to from the sixties in 20th century seriousness that internal faults of switch cabinet electric arc injures personnel, and deep experimental study is carried out to internal faults of switch cabinet characteristic.Develop the middle-low voltage switch cabinet protection system based on detecting arclight in the early 1990s, 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 become, the standard configuration of low-tension switch cabinet.External application experiment shows; arc light protection system except alleviate to greatest extent switchgear damaged condition and for except neighbouring staff provides personnel protection; also can greatly reduce the interruption duration that internal faults of switch cabinet causes, thus concerning its application user, also there is very large economic benefit.
Fig. 1 is the damaged condition caused equipment under the various arcing times of data introduction both domestic and external:
85ms: do not destroy significantly, generally can come into operation after inspection insulation.
100ms: cable insulation weak spot takes fire, and damages system.
200ms: bus takes fire, 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: the situation that longer, the fault coverage of the time for current domestic breaking arc fault expands, simultaneously arc light protecting system in the market is not all suitable for the application scenario of single mother partition, provides a kind of arc light protecting system being applicable to single mother partition; Be intended to solve in the system of single mother partition, within the very first time of arbitrary bus generation arc fault, excise the fault of bus and inside switch cabinet, avoid further expansion, proterctive equipment and the personal safety of fault.
The technical solution adopted in the present invention is:
Be applicable to an arc light protecting system for 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 is also connected to I section lead-in circuit breaker, II section lead-in circuit breaker, is 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 to I section busbar transformer, II section busbar transformer, I section busbar transformer, the other end of II section busbar transformer is connected to over-current detection unit one, over-current detection unit two, over-current detection unit one, over-current detection unit two is connected to 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, is respectively equipped with multiple arc photosensor in two groups of switch cubicles, and each arc photosensor of two groups of switch cubicles accesses arc light collecting unit one respectively, arc light collecting unit two, arc light collecting unit one is connected with arc light collecting unit two and is connected to arc light and to trip outlet one, arc light tripping operation outlet two, arc light collecting unit two is connected with arc protection master unit by optical fiber, arc protection master unit, arc light collecting unit one, arc light collecting unit two is connected with power module jointly, 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 being 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 being applicable to single mother partition, is characterized in that: described arc photosensor includes arc light detecting probe, and arc light detecting probe adopts lens type arc light detecting probe.
Described a kind of arc light protecting system being applicable to single mother partition, is characterized in that: at least install 2 arc light detecting probes in described each switch cubicle.
The invention has the beneficial effects as follows:
In single mother partition system, the present invention can ensure that middle-low voltage switch cabinet is quick, accurate selectively open failure circuit, the fundamentally duration of fault restriction electric arc at generation arc fault, eliminates the harm that arc light causes, avoid the expansion of fault, ensure equipment and personal safety.
Accompanying drawing explanation
Fig. 1 is to the damaged condition schematic diagram that equipment causes under the various arcing time.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
With reference to shown in Fig. 2, a kind of arc light protecting system being applicable to single mother partition, includes 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 is also connected to I section lead-in circuit breaker 15, section breaker 4, I section lead-in circuit breaker 15 is connected with between II section lead-in circuit breaker 6, I section isolation switch 5 and II section isolation switch 18, II section lead-in circuit breaker 6 is connected to 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 to over-current detection unit 10, over-current detection unit 9, over-current detection unit 10, over-current detection unit 9 is connected to 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 being respectively equipped with multiple arc photosensors 1, two groups of switch cubicles 20 in two groups of switch cubicles 20 accesses arc light collecting unit 12 respectively, arc light collecting unit 13, arc light collecting unit 12 is connected with arc light collecting unit 13 and is connected to arc light and to trip 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.
Power module 19 adopts 24VDC, 5VDC power module.
Arc photosensor 1 includes arc light detecting probe, and arc light detecting probe adopts lens type arc light detecting probe.
2 arc light detecting probes are at least installed in each switch cubicle 20.
Operation principle of the present invention is:
The arc light detected is transferred to arc light collecting unit 12 and 13 by special optic fibre 14 by the arc photosensor 1 in switch cubicle 20; arc light collecting unit selects arc light tripping operation outlet 16 and 17 to output to 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; over-current detection unit 9 and 10 transmits the over-current signal of coming; 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 exports trip signal to I section wire-outgoing breaker 2, II section wire-outgoing breaker 7 according to control logic; I section lead-in circuit breaker 15, II section lead-in circuit breaker 6.
The invention solves original protection system and can not disconnect arc fault point in time, cause failure propagation, the problem of device damage, improve the reliability of power supply to a certain extent, protect equipment and personal safety.
Claims (4)
1. be applicable to an arc light protecting system for 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 is also connected to I section lead-in circuit breaker, II section lead-in circuit breaker, is 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 to I section busbar transformer, II section busbar transformer, I section busbar transformer, the other end of II section busbar transformer is connected to over-current detection unit one, over-current detection unit two, over-current detection unit one, over-current detection unit two is connected to 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, is respectively equipped with multiple arc photosensor in two groups of switch cubicles, and each arc photosensor of two groups of switch cubicles accesses arc light collecting unit one respectively, arc light collecting unit two, arc light collecting unit one is connected with arc light collecting unit two and is connected to arc light and to trip outlet one, arc light tripping operation outlet two, arc light collecting unit two is connected with arc protection master unit by optical fiber, arc protection master unit, arc light collecting unit one, arc light collecting unit two is connected with power module jointly, 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 being applicable to single mother partition according to claim 1, is characterized in that: described power module adopts 24VDC and 5VDC power module.
3. a kind of arc light protecting system being applicable to single mother partition according to claim 1, is characterized in that: described arc photosensor includes arc light detecting probe, and arc light detecting probe adopts lens type arc light detecting probe.
4. a kind of arc light protecting system being applicable to single mother partition according to claim 1 or 3, is characterized in that: at least install 2 arc light detecting probes in described often group 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN103441473A CN103441473A (en) | 2013-12-11 |
| CN103441473B true CN103441473B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1971007A1 (en) * | 2007-03-16 | 2008-09-17 | ABB Technology AG | System and method for fault protection in compact secondary substations |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103441473A (en) | 2013-12-11 |
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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. |