CN201590654U - Main control unit of photoelectric arc light protection system - Google Patents
Main control unit of photoelectric arc light protection system Download PDFInfo
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- CN201590654U CN201590654U CN2009202950164U CN200920295016U CN201590654U CN 201590654 U CN201590654 U CN 201590654U CN 2009202950164 U CN2009202950164 U CN 2009202950164U CN 200920295016 U CN200920295016 U CN 200920295016U CN 201590654 U CN201590654 U CN 201590654U
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Abstract
The utility model relates to a main control unit of a photoelectric arc light protection system, and aims to achieve the technical purpose that the provided main control unit of the photoelectric arc light protection system can solve the problem of economic loss which is caused by the development and extension of failures in low and medium voltage bus bars due to high failure occurrence rate and failure elimination delay. In order to achieve the purpose, the utility model adopts the technical scheme that the main control unit of the photoelectric arc light protection system comprises a programmable logic controller (PLC), wherein the input terminals of the PLC are connected with a group of arc light sensors, a group of trip input terminals and a group of data input terminals, the output pins of the PLC are connected with a thyristor quick trip output module, a conventional relay trip output module, and an output signal interface for remotely connecting other protection systems, and the PLC is connected with the arc light sensors, the trip output terminals and the output signal interface through optical fibers. The utility model is mainly applied to photoelectric arc light protection systems in the power industry for protecting low and medium voltage bus bars.
Description
Technical field
The utility model relates to a kind of photoelectric type arclight protection system main control unit.Be applied in the photoelectric type arclight protection system of centering in the power industry, low-voltage bus bar enforcement protection.
Background technology
Show that according to early stage foreign statistic data annual per 1000 switch cubicles just have 7 to be damaged, failure rate 0.7%.The probability of rural power distribution net is higher, reaches 1.2%.According to " communication of high-voltage switch gear technology ", singly be the handcart cabinet, China's electric power system year just has 200 multiaspect cabinets to burn.Because the attention of national governments is installed bus and is protected ratio to surpass 95% fast with relevant mandatory file, rules regulation, the Medium voltage switch or circuit breaker on ground such as Russia and America and Europe.External famous switch cubicle manufacturer, as Reyrolle, ABB, Siemens, Schneider, Moeller, Holec etc., wherein low-tension switch cabinet all has matching used arclight protection system.
In recent years, along with the high speed development of domestic power industry, the number of applications of Medium Voltage Switchgear is more and more, because the middle pressure busbar fault that switch cubicle arc short-circuit fault causes is also increasing; On the other hand; the user is also more and more higher to the reliability requirement of power supply; more domestic experts also emphasize to install the importance of special-purpose middle voltage bus bar protection always; the user wishes also to provide that a kind of cost is lower, principle simple, is applicable to the bus protection of 3KV～35KV; to reduce the infringement of busbar fault to greatest extent, improve power supply reliability to equipment.Under this background, the arclight protection system begins accelerated development in China's application on power system.
Following damaged condition under the various arcing times of external data introduction equipment being caused:
35ms: not significant the damage, generally can behind the check insulation resistance, come into operation.
100ms: damage lessly, before switch cubicle puts into operation once more, need to clean or some possible little repairing.
500ms: device damage is very serious, and personnel at the scene also are subjected to serious injury, must just can put into operation by removable parts equipment again.
Summary of the invention
The technical problems to be solved in the utility model is: the deficiency that can not satisfy quick excision fault at existing protection scheme; a kind of photoelectric type arclight protection system main control unit is provided; with in solving, low-voltage bus bar break down probability higher, postpone the excision fault and cause fault progression, expansion, thereby cause the problem of tremendous economic loss.
The technical scheme that the utility model adopted is: photoelectric type arclight protection system main control unit, it is characterized in that: described main control unit comprises a PLC programmable logic controller (PLC), and its input is connected to one group of arc photosensor, tripping operation input and data input pin; The output pin of this programmable logic controller (PLC) is connected to thyristor fast trip output module, conventional relay tripping operation output module and is used to the long-range output signal interface that is connected of other protection systems; Adopt optical fiber to be connected between this PLC programmable logic controller (PLC) and arc photosensor, tripping operation input and the output signal interface.
The control pin of described PLC programmable logic controller (PLC) connects toggle switch.The resetting pin of PLC programmable logic controller (PLC) connects reset switch.The demonstration pin of PLC programmable logic controller (PLC) connects and shows charactron.
Described optical fiber is single core Plasitc fibers optical fiber.Described arc photosensor is made up of a fiber adapter and the scatter filter that is used for the filtering ring environmental light source.
The beneficial effects of the utility model are: this main control unit has played management and has controlled the effect of whole photoelectric type arclight protection system, and the whole trip time was determined jointly by arclight protection system trip time and circuit breaker tripping time.Use fiber-optic monitoring arclight signal, cooperate the over-current signal failure judgement,, prevent fault progression, expansion, avoid the loss of personnel's property with the fastest speed, selectively in the very first time excision source of trouble.The single core plasticity optical fiber that uses in the utility model is easy to install and use, and anti-electromagnetic interference is strong, does not need special protection sheath, and length can be selected full-length or be selected arbitrarily by the client.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model is the main control unit of photoelectric type arclight protection system, comprises a PLC programmable logic controller (PLC) 6 (MU-PLC), and its input is connected to one group of (16) arc photosensor 2, tripping operation input 9 and data input pin 10; The output pin of this programmable logic controller (PLC) is connected to thyristor fast trip output module 8, conventional relay tripping operation output module 7 and is used to the long-range output signal interface 3 that is connected of other protection systems; Adopt optical fiber to be connected between this PLC programmable logic controller (PLC) 6 and arc photosensor 2, tripping operation input 9 and the output signal interface 3.
In the above-mentioned module, tripping operation input 9 (also being the optical fiber input interface) is used for connecting or expansion, or connect simultaneously and the tripping operation output signal of extend current unit, tripping operation output signal that can also other arc light unit of cascade also converts the standard logic signal to and passes to 6 processing of PLC programmable logic controller (PLC).Described data input pin 10 is the differential signal input interface, is used for other current unit of cascade and arc light unit power supply or alert data output signal and passes to 6 processing of PLC programmable logic controller (PLC).Optical fiber input interface 2-1 is used for converting the light signal that arc photosensor 2 transmits to the standard logic signal and passes to 6 processing of PLC programmable logic controller (PLC) by combinational logic.Output signal interface 3 is used to other protection system output trip signals.
The control pin of described PLC programmable logic controller (PLC) 6 connects the toggle switch 4 of four patterns, is used to be provided with the mode of operation of tripping operation input 9 (also being the optical fiber input interface).The resetting pin of controller connects reset switch 5, is used for the hand-reset of main control unit; The demonstration pin of controller connects four eight sections and shows charactron 1, is used for the information of display system.
This routine optical fiber adopts single core Plasitc fibers optical fiber, is used for transmitting optical signal.Arc photosensor 2 is made up of a fiber adapter and the scatter filter that is used for the filtering ring environmental light source, is used to detect arc light intensity.
Operation principle of the present utility model is: as from current unit or arc light unit through the trip signal of tripping operation input 9 inputs, from the differential signal of data input pin 10 inputs or directly from arc photosensor 2 during through optical fiber input interface 2-1 input optical signal, these signals are input to PLC programmable logic controller (PLC) 6 by optical fiber or general data line respectively, and controller is handled the back and generated the tripping operation output signal and pass through 7 outputs of thyristor fast trip output module 8 and conventional relay tripping operation output module respectively.When toggle switch 4 on off states were ON, tripping operation input 9 can directly connect arc photosensor 2, and the intensity of sensor photosensitive can be regulated with the potentiometer of main control unit panel.When on off state was OFF, tripping operation input 9 was used for transmitting the trip signal that arc light unit or current unit are come.If tripping operation input 9 does not connect optical fiber, then Dui Ying switch 4 should be got to the ON position.
Claims (6)
1. photoelectric type arclight protection system main control unit, it is characterized in that: described main control unit comprises a PLC programmable logic controller (PLC) (6), its input is connected to one group of arc photosensor (2), tripping operation input (9) and data input pin (10); The output pin of this programmable logic controller (PLC) is connected to thyristor fast trip output module (8), conventional relay tripping operation output module (7) and is used to the long-range output signal interface (3) that is connected of other protection systems; Employing optical fiber is connected between this PLC programmable logic controller (PLC) (6) and arc photosensor (2), tripping operation input (9) and the output signal interface (3).
2. photoelectric type arclight protection system main control unit according to claim 1 is characterized in that: the control pin of described PLC programmable logic controller (PLC) (6) connects toggle switch (4).
3. photoelectric type arclight protection system main control unit according to claim 1 is characterized in that: the resetting pin of described PLC programmable logic controller (PLC) (6) connects reset switch (5).
4. photoelectric type arclight protection system main control unit according to claim 1 is characterized in that: the demonstration pin of described PLC programmable logic controller (PLC) (6) connects and shows charactron (1).
5. according to claim 1 or 2 or 3 or 4 described photoelectric type arclight protection system main control units, it is characterized in that: described optical fiber is single core Plasitc fibers optical fiber.
6. according to claim 1 or 2 or 3 or 4 described photoelectric type arclight protection system main control units, it is characterized in that: described arc photosensor (2) is made up of a fiber adapter and the scatter filter that is used for the filtering ring environmental light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202950164U CN201590654U (en) | 2009-12-25 | 2009-12-25 | Main control unit of photoelectric arc light protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202950164U CN201590654U (en) | 2009-12-25 | 2009-12-25 | Main control unit of photoelectric arc light protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590654U true CN201590654U (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202950164U Expired - Fee Related CN201590654U (en) | 2009-12-25 | 2009-12-25 | Main control unit of photoelectric arc light protection system |
Country Status (1)
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| CN (1) | CN201590654U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298106A (en) * | 2011-05-19 | 2011-12-28 | 河海大学 | FPGA (field programmable gate array)-based arc monitoring system in valve hall |
| CN103812082A (en) * | 2012-11-08 | 2014-05-21 | 李品德 | Novel arc light protection system |
| CN104953567A (en) * | 2015-07-14 | 2015-09-30 | 南京中凯光电技术有限公司 | Arc light protection system and method for feed-out circuit in switch cabinet |
| RU197599U1 (en) * | 2019-08-01 | 2020-05-15 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Device for monitoring the operability of photothyristors for protection against arc faults |
-
2009
- 2009-12-25 CN CN2009202950164U patent/CN201590654U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298106A (en) * | 2011-05-19 | 2011-12-28 | 河海大学 | FPGA (field programmable gate array)-based arc monitoring system in valve hall |
| CN103812082A (en) * | 2012-11-08 | 2014-05-21 | 李品德 | Novel arc light protection system |
| CN104953567A (en) * | 2015-07-14 | 2015-09-30 | 南京中凯光电技术有限公司 | Arc light protection system and method for feed-out circuit in switch cabinet |
| CN104953567B (en) * | 2015-07-14 | 2017-12-01 | 南京中凯光电科技股份有限公司 | A kind of arc light protection system and method for being used in switch cubicle feed out circuit |
| RU197599U1 (en) * | 2019-08-01 | 2020-05-15 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Device for monitoring the operability of photothyristors for protection against arc faults |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20121225 |