CN205992731U - A kind of arc light protecting system with selectivity trip avoidance function - Google Patents
A kind of arc light protecting system with selectivity trip avoidance function Download PDFInfo
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- CN205992731U CN205992731U CN201620697961.7U CN201620697961U CN205992731U CN 205992731 U CN205992731 U CN 205992731U CN 201620697961 U CN201620697961 U CN 201620697961U CN 205992731 U CN205992731 U CN 205992731U
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- arc light
- arc
- relay
- main control
- bus
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- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Abstract
The utility model discloses a kind of arc light protecting system with selectivity trip avoidance function, including main control unit, the first separating element and arc light unit；First separating element is arranged on and carries out staged isolation to it on bus，Including the first current unit、First arc photosensor and the first arc light relay，The normally-closed contact of the first current unit and the first arc light relay is connected on bus，The outfan of the first arc photosensor and the first current unit connects the input of main control unit respectively，The outfan of main control unit is connected with the input of each arc light unit respectively by arc light relay expanding element，This utility model is in the cable vault of feeder switch cabinet、Switch gear room is respectively configured arc probe，It is connected to arc light relay，When arc light relay monitors cable vault、There is arc fault in switch gear room，And in the case of electric current criterion meets，Directly jump this line switching，And send failure system to arc light main control unit，Bus-bar room configuration arc probe is directly accessed main control unit，If bus-bar room probe monitors are to arc light action，And main control unit determines electric current criterion and meets，Then main transformer low-pressure side switch or block switch are jumped according to the logic adjusted.
Description
Technical field
This utility model is related to the arc protection technical field of relay protection system, and more particularly, to one kind has selectivity and jumps
The arc light protecting system of lock function.
Background technology
With the continuous expansion of net capacity, the scale of In the distribution system of low voltage also becomes big therewith, and busbar short-circuit capacity is healed
Come higher, and middle low-pressure system, use enclosed middle-placed switch cabinet to draw with cable more, frequent operation, running current is big, fault mistake
Voltage is high, and device fabrication quality and safe distance are poorer than high pressure equipment, are susceptible to insulation fault.Often had in recent years switch cubicle or
The accident that bus is burned out because the reasons such as insulation damages, operational error, ageing equipment produce arc light occurs, and causes great warp
Ji loss and personnel's injury.
In current arc protection scheme, mostly rely on the back-up protection of upper level protection device it is impossible to burn in arc light
Harm excises fault before expanding.And tradition arc protection is directed to busbar, need when arc light information is detected to disconnect entirely
The power supply of system, is likely to result in power failure range and expands, so when how to consider that diverse location occurs arc fault, selective
Tripping operation be the now eager problem solving.
Utility model content
The purpose of this utility model is to provide a kind of arc light protecting system with selectivity trip avoidance function, is capable of presenting
Selectivity tripping operation during arc fault in the cable vault of wiretap cabinet, switch gear room, bus-bar room diverse location, it is to avoid power failure range there is
Extension.
The technical solution adopted in the utility model is：
A kind of arc light protecting system with selectivity trip avoidance function, including for accepting detection signal and sending control and refer to
The main control unit of order, for carrying out to bus selecting the first separating element of cut-off and each work interior to be monitored being carried out
The arc light unit of arc light monitoring；The first described separating element is arranged on and carries out staged isolation to it on bus, includes monitoring
First current unit of bus current size, the first arc photosensor and the first arc light relay, described the first current unit
Be connected on bus with the normally-closed contact of the first arc light relay, the first described arc photosensor and the first current unit defeated
Go out the input that end connects main control unit respectively, the outfan of main control unit pass through arc light relay expanding element respectively with each
The input of arc light unit is connected, and described arc light unit includes the second arc light relay, the line of described second arc light relay
Circle is connected with arc light relay expanding element, and the normally-closed contact of the second arc light relay is arranged on the voltage device confession of room to be monitored
In electric line.
Two main transformer low-pressure sides are additionally provided with second, third separating element respectively, for carrying out to main transformer low-pressure side
Arc light monitoring and cut-off protection.
The second described arc light relay is one or more.
Described arc light relay expanding element is eight road ports.
This utility model is respectively configured arc probe in the cable vault of feeder switch cabinet, switch gear room, is connected to arc light relay,
In the case of arc light relay monitors that cable vault, switch gear room occur arc fault, and electric current criterion meets, directly jump this line
Way switch, in switch trip, arc light relay sends failure system to arc light main control unit simultaneously, if after feeder switch tripping
Main control unit monitors that fault current yet suffers from, after 70-150ms (can adjust), the logic adjusted according to main control unit
Jump main transformer low-pressure side switch or block switch；Bus-bar room configuration arc probe is directly accessed main control unit, if bus-bar room probe prison
Measure arc light action, and main control unit determines electric current criterion and meets, then main control unit is low according to the logic jump main transformer adjusted
Pressure side switch or block switch.Realize selectivity tripping operation when feeder switch cabinet diverse location breaks down.
Brief description
Fig. 1 is schematic block circuit diagram of the present utility model.
Specific embodiment
As shown in figure 1, a kind of arc light protecting system with selectivity trip avoidance function, including for accepting detection signal simultaneously
Send the main control unit of control instruction, be used for bus being carried out select the first separating element of cut-off and to each work to be monitored
Make the arc light unit that interior carries out arc light monitoring, the first described separating element is arranged on and carries out staged isolation to it on bus,
Include monitoring the first current unit of bus current size, the first arc photosensor and the first arc light relay, described the
The normally-closed contact of one current unit and the first arc light relay is connected on bus, the first described arc photosensor and first electricity
The outfan of stream unit connects the input of main control unit respectively, and the outfan of main control unit passes through arc light relay expanding element
It is connected with the input of each arc light unit respectively, described arc light unit includes the second arc light relay, described second arc light
The coil of relay is connected with arc light relay expanding element, and the normally-closed contact of the second arc light relay is arranged on room to be monitored
Voltage device supply line on.Two main transformer low-pressure sides are additionally provided with second, third separating element, respectively for main transformer
Low-pressure side carries out arc light monitoring and cut-off protection.The second described arc light relay is one or more.Described arc light continues
Electrical equipment expanding element is eight road ports.
Illustrated with specific example below：Gather 2 main transformer low-pressure side electric currents including main control unit.Main transformer low-pressure side is entered
Line room, switch gear room, bus-bar room, main transformer isolation cabinet bus-bar room, handcart room, cable vault, bus section cable vault, bus-bar room, bus
Staged isolation cabinet bus-bar room, handcart room, cable vault, PT cabinet bus-bar room, the arc photosensor feeding out the configuration of switch bus room is direct
It is connected to main control unit, I section of bus has the arc photosensor of equipment close and be coupled to 1# main transformer low-pressure side electric current, II section of bus sets
Standby arc photosensor closes and is coupled to 2# main transformer low-pressure side electric current, and 2 arc photosensors are installed in busbar sectional izing switch room, are respectively associated
To 1#, 2# main transformer low-pressure side electric current, bus connection switch electric current associates all arc photosensors.Each feed out switch cable vault dress,
Switch gear room respectively fills 1 arc photosensor, is connected to the arc light relay originally feeding out switch, and arc light relay is expanded by arc light relay
Exhibition unit is connected to main control unit, and arc light relay, according to feeding out bus belonging to switch, is respectively configured pass in main control unit and is coupled to
To 1#, 2# main transformer low-pressure side electric current, bus connection switch electric current associates all arc light relays.Arc light relay expanding element is as arc
The relay unit of optical relay completes arc light relay to main control unit signal transmission.
This switch is jumped, if the current module fault of switch tripping backarc optical relay association during arc light actuating of relay outlet
Electric current appoints right presence, then start the failure protection logic of main control unit, the switch of the current module of tripping arc light relay association.
Can select during tripping operation, using 6 groups of exit relays in main control unit, going out current unit each switch on also to may be selected
Mouth relay TRIP nearby.
Because arc photosensor closes the current acquisition module being coupled to sensor mounting location equipment direct correlation, therefore no matter
Run in system separation, or system powered by single main transformer, or closing the ring runs, all ensure that master control when breaking down
Unit selectively excises main transformer low-pressure side switch and bus connection switch, improves the reliability of system operation.
Claims (4)
1. a kind of arc light protecting system with selectivity trip avoidance function it is characterised in that：Including for accepting detection signal simultaneously
Send the main control unit of control instruction, be used for bus being carried out select the first separating element of cut-off and to each work to be monitored
Make the arc light unit that interior carries out arc light monitoring；The first described separating element is arranged on and carries out staged isolation to it on bus,
Include monitoring the first current unit of bus current size, the first arc photosensor and the first arc light relay, described the
The normally-closed contact of one current unit and the first arc light relay is connected on bus, the first described arc photosensor and first electricity
The outfan of stream unit connects the input of main control unit respectively, and the outfan of main control unit passes through arc light relay expanding element
It is connected with the input of each arc light unit respectively, described arc light unit includes the second arc light relay, described second arc light
The coil of relay is connected with arc light relay expanding element, and the normally-closed contact of the second arc light relay is arranged on room to be monitored
Voltage device supply line on.
2. the arc light protecting system with selectivity trip avoidance function according to claim 1 it is characterised in that：Two main transformers
Low-pressure side is additionally provided with second, third separating element respectively, protects for main transformer low-pressure side is carried out with arc light monitoring and cut-off
Shield.
3. the arc light protecting system with selectivity trip avoidance function according to claim 2 it is characterised in that：Described
Two arc light relays are one or more.
4. the arc light protecting system with selectivity trip avoidance function according to claim 3 it is characterised in that：Described arc
Optical relay expanding element is eight road ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697961.7U CN205992731U (en) | 2016-07-05 | 2016-07-05 | A kind of arc light protecting system with selectivity trip avoidance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697961.7U CN205992731U (en) | 2016-07-05 | 2016-07-05 | A kind of arc light protecting system with selectivity trip avoidance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992731U true CN205992731U (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620697961.7U Active CN205992731U (en) | 2016-07-05 | 2016-07-05 | A kind of arc light protecting system with selectivity trip avoidance function |
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| Country | Link |
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| CN (1) | CN205992731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977927A (en) * | 2016-07-05 | 2016-09-28 | 国家电网公司 | Arc protection system and method having selective trip-out function |
-
2016
- 2016-07-05 CN CN201620697961.7U patent/CN205992731U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977927A (en) * | 2016-07-05 | 2016-09-28 | 国家电网公司 | Arc protection system and method having selective trip-out function |
| CN105977927B (en) * | 2016-07-05 | 2024-02-23 | 国家电网公司 | Arc light protection system and method with selective tripping function |
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