CN105226617B - A kind of 360 degrees omnidirection ring network electric arc light protection method - Google Patents
A kind of 360 degrees omnidirection ring network electric arc light protection method Download PDFInfo
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- CN105226617B CN105226617B CN201510619727.2A CN201510619727A CN105226617B CN 105226617 B CN105226617 B CN 105226617B CN 201510619727 A CN201510619727 A CN 201510619727A CN 105226617 B CN105226617 B CN 105226617B
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Abstract
The invention discloses a kind of 360 degrees omnidirection ring network electric arc light protection methods; arc light protective device carries out real-time arc light detecting by arc photosensor to the first transformer terminal; arc light is detected whether; it monitors the current signal of the first transformer in real time by the first current sensor, detects current increment；If detecting arc light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, arc light protective device disconnects the high-pressure side breaker of the first transformer or low-pressure side breaker；Current protection unit carries out real-time arc light detecting by arc photosensor to the second transformer terminal, has detected whether arc light, monitors the current signal of the second transformer in real time by the second current sensor, detects current increment；If detecting arc light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, current protection unit disconnects the high-pressure side breaker of the second transformer or low-pressure side breaker.
Description
Technical field
The present invention relates to arc protection field, more particularly to a kind of 360 degrees omnidirection ring network electric arc light protection method.
Background technology
In electric system, the busbar of 35kV and following voltage class does not install bus protection generally.It is however, low due in
Outlet on pressure busbar is more, frequent operation, and the distance of three-phase conductor wire spacing and the earth is closer, is easily endangered by toy
Evil, device fabrication quality is poorer than high-tension apparatus, and apparatus insulated aging and mechanical wear, service condition is severe, system operation conditions
Change, reasons, the probability of failure of middle voltage bus bar such as artificial and operating mistake are more much higher than high pressure, super-pressure busbar.It is but long-term
Since, people pay little attention to the protection of middle voltage bus bar always, also do not find advanced rational solution, therefore, mostly
Failure on busbar is cut off using the back-up protection with larger delay, failure is often made to be developed, expand, it is huge so as to cause
Big economic loss.In recent years, mesolow switchgear is seriously burnt due to various reasons, and some even develops into serious
Fire disaster, and main transformer is since the accident damaged by external short circuit rush of current also increases year by year, these distribution accidents
It deals with improperly or even is extended and develop into power transmission network accident, cause great economic loss, caused the extensive pass of power department
Note.Trace it to its cause is because without installing middle voltage bus bar protection, caused by failing quickly to cut off failure mostly.So in order to
Ensure the safe operation of transformer and bus switchgear, it is special there is an urgent need to configure according to the requirement of rapidity of relay protection
Middle voltage bus bar protection can protect a kind of 360 degrees omnidirection ring network electric arc protection of the monarch-type of busbar and feeder line simultaneously again
Method.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of 360 degrees omnidirection ring network arclight guarantors
Maintaining method.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of 360 degrees omnidirection ring network arclight is protected
Maintaining method, including following multiple steps：
S1, arc light protective device carry out real-time arc light detecting by arc photosensor to the first transformer terminal, and detection is
It is no to have arc light, it monitors the current signal of the first transformer in real time by the first current sensor, detects current increment；If it detects
Arc light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, arc light protective device disconnects
The high-pressure side breaker of first transformer or low-pressure side breaker.
S2, current protection unit carry out real-time arc light detecting to the second transformer terminal by arc photosensor, detect whether
There is arc light, monitor the current signal of the second transformer in real time by the second current sensor, detect current increment；If detect arc
Light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, current protection unit disconnects second
The high-pressure side breaker of transformer or low-pressure side breaker.
S3, arc light protective device and current protection unit are in communication with each other by interchanger.
S4, arc light protective device are also in communication with each other by interchanger and multiple arc light expanding elements, arc light extension
Unit respectively sets monitored under the monitored equipment under the first low-voltage bus bar and the second low-voltage bus bar by arc photosensor
It is standby to carry out arc light detecting.
S401, if there is arc light alarm in the monitored equipment for detecting under the first low-voltage bus bar, arc light protective device
The power supply of the monitored equipment under first low-voltage bus bar is disconnected, and disconnects busbar breaker, isolates the first low-voltage bus bar and the
Two low-voltage bus bars.
S402, if there is arc light alarm in the monitored equipment for detecting under the second low-voltage bus bar, arc light protective device
The power supply of the monitored equipment under second low-voltage bus bar is disconnected, and disconnects busbar breaker, isolates the first low-voltage bus bar and the
Two low-voltage bus bars.
The arc photosensor includes transparent optical fibers sensor, and the transparent optical fibers sensor includes transparent optical fibers, passes through
Transparent optical fibers complete 360 degrees omnidirection arc light monitoring, and pass through transparent optical fibers and form annular monitoring net.
Further, the arc light protective device also concentrates feed protection, electric arc protection by protection for feed line unit
Device also monitors the environmental aspect residing for monitored equipment in real time by monitoring of working condition unit.
Further, the monitoring of working condition unit includes Temperature Humidity Sensor, radio temperature sensor, fuel gas sensing
Device, wireless humidity sensor, leakage current test unit and leakage current sensor.
Further, the transparent optical fibers from inside to outside successively include glass optical fiber, filled layer, filter layer, metal layer and
Protective layer.The filter layer includes visible ray filter layer and infrared light filter layer.
Further, the transparent optical fibers sensor further includes two connectors, and the connector is separately positioned on transparent
The both ends of optical fiber.
Further, the transparent optical fibers sensor further includes connector, sensor connector and orientation arc photosensor, institute
The one end for stating transparent optical fibers is connected with connector, and the other end of the transparent optical fibers passes through sensor connector and orientation arc light sensor
Device connects.
The beneficial effects of the invention are as follows：The present invention is designed using distributed mode, is suitable as the protection of mesolow double-bus,
Possesses flexible attributes of network.Wherein protection for feed line unit, which can be individually formed, minimizes protection system, and separately protected feeder line is to subtract
Minor accident power failure range.Feeder unit also can run on Centralized Monitoring pattern, pass through arc light protective device dispatching communication.This hair
Bright electric arc protection uses detection arc light and electric current as input quantity, can individually as overcurrent protection, pure arc protection and arc light and
The double criterion protections of overcurrent.The system have principle is simple, reliable in action is rapid, to primary equipment without particular/special requirement, be adapted to it is each
The advantages of kind method of operation.
The present invention can complete being detected without dead angle for 360 degrees omnidirection by transparent optical fibers arc light protective device, thoroughly
Mingguang City's fibre is additionally provided with filter layer and effectively visible or infrared light can be filtered, and can also be installed by hanging ring, installation side
Just.The present invention can set an orientation arc photosensor on the head of transparent optical fibers, convenient for oriented detection.In the present invention, all parts
Using modularized design, it is easily installed and safeguards.
Description of the drawings
Fig. 1 is a kind of system construction drawing of 360 degrees omnidirection ring network arc light protection system of the present invention；
Fig. 2 is the structure chart of transparent optical fibers of the present invention；
Fig. 3 is one schematic diagram of embodiment of annular fiber type arc photosensor of the present invention；
Fig. 4 is two schematic diagram of embodiment of annular fiber type arc photosensor of the present invention；
Fig. 5 is the front panel schematic diagram of arc light protective device of the present invention；
In figure, 1- glass optical fibers, 2- filled layers, 3- filter layers, 4- metal layers, 5- protective layers, 6- hanging rings, the transparent light of 7-
Fibre, 8- connectors, 9- orientation arc photosensors, 10- processors, 11- casings, 12- liquid crystal displays, 13-LED indicator lights, 14-
Function button, 15- guide keys, 16- installing plates.
Specific embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
A kind of 360 degrees omnidirection ring network electric arc light protection method, including following multiple steps：
S1, arc light protective device carry out real-time arc light detecting by arc photosensor to the first transformer terminal, and detection is
It is no to have arc light, it monitors the current signal of the first transformer in real time by the first current sensor, detects current increment；If it detects
Arc light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, arc light protective device disconnects
The high-pressure side breaker of first transformer or low-pressure side breaker.
S2, current protection unit carry out real-time arc light detecting to the second transformer terminal by arc photosensor, detect whether
There is arc light, monitor the current signal of the second transformer in real time by the second current sensor, detect current increment；If detect arc
Light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, current protection unit disconnects second
The high-pressure side breaker of transformer or low-pressure side breaker.
S3, arc light protective device and current protection unit are in communication with each other by interchanger.
S4, arc light protective device are also in communication with each other by interchanger and multiple arc light expanding elements, arc light extension
Unit respectively sets monitored under the monitored equipment under the first low-voltage bus bar and the second low-voltage bus bar by arc photosensor
It is standby to carry out arc light detecting.
S401, if there is arc light alarm in the monitored equipment for detecting under the first low-voltage bus bar, arc light protective device
The power supply of the monitored equipment under first low-voltage bus bar is disconnected, and disconnects busbar breaker, isolates the first low-voltage bus bar and the
Two low-voltage bus bars.
S402, if there is arc light alarm in the monitored equipment for detecting under the second low-voltage bus bar, arc light protective device
The power supply of the monitored equipment under second low-voltage bus bar is disconnected, and disconnects busbar breaker, isolates the first low-voltage bus bar and the
Two low-voltage bus bars.
The arc photosensor includes transparent optical fibers sensor, and the transparent optical fibers sensor includes transparent optical fibers 7, passes through
Transparent optical fibers 7 complete 360 degrees omnidirection arc light monitoring, and pass through transparent optical fibers 7 and form annular monitoring net.
Further, the arc light protective device also concentrates feed protection, electric arc protection by protection for feed line unit
Device also monitors the environmental aspect residing for monitored equipment in real time by monitoring of working condition unit.
Further, the monitoring of working condition unit includes Temperature Humidity Sensor, radio temperature sensor, fuel gas sensing
Device, wireless humidity sensor, leakage current test unit and leakage current sensor.
As shown in Figure 1, the real-time distributed monitoring system that Fig. 1 is relied on for electric arc protection monitoring method of the present invention, bag
Include arc light protective device, one or more arc light expanding element, transparent optical fibers 7, current protection unit, protection for feed line unit and
Monitoring of working condition unit, the arc light protective device are expanded by interchanger with current protection unit and one or more arc lights respectively
Unit connection is opened up, the arc light expanding element is by connector 8 with connecting for the transparent optical fibers 7 of 360 degrees omnidirection arc light detecting
It connects.
Further, as shown in Fig. 2, the transparent optical fibers 7 include glass optical fiber 1, filled layer 2, filter successively from inside to outside
Photosphere 3, metal layer 4 and protective layer 5.The filter layer 3 includes visible ray filter layer and infrared light filter layer.
Further, as shown in figure 3, the transparent optical fibers sensor further includes two connectors 8, the connector 8 divides
The both ends of transparent optical fibers 7 are not arranged on.Downward in this connection side, transparent optical fibers sensor gathers arc light by transparent optical fibers 7
Signal, and pass through connector 8 and arc optical signal is sent to arc light protective device, arc light expanding element or current protection unit.
Further, as shown in figure 4, the transparent optical fibers sensor further includes connector 8, sensor connector and orientation arc
Optical sensor 9, one end of the transparent optical fibers 7 are connected with connector 8, and the other end of the transparent optical fibers 7 is connect by sensor
Head is connected with orientation arc photosensor 9.Downward in this connection side, transparent optical fibers sensor is not only gathered by transparent optical fibers 7
Arc optical signal also by orienting the arc optical signal of 9 oriented acquisition monitored equipment of arc photosensor, and passes through connector 8 and incites somebody to action thoroughly
The arc optical signal that Mingguang City's fibre 7 and orientation arc photosensor 9 collect is sent to arc light protective device, arc light expanding element or electricity
Flow protection location.
Arc light protective device is a kind of core of 360 degrees omnidirection ring network arc light protection system, is responsible for system
Information taken, logic analysis, breakdown judge and tripping control, while all expanding elements are managed, feeder unit can also be carried out
Centralized Monitoring.
Protection for feed line unit can gather 4 road arc lights, and 4 road TA current acquisition passages are that is, maximum to can be achieved adjacent 2
The arc light and current protection of feeder line realize fast shut-off failure.
Arc light expanding element：Expansible 16 road arc light acquisition channel.
Current protection unit：Expansible 6 road TA current acquisitions passage and tripping passage.
Arc sensor：It is responsible for detection arc light information, is digital signal by arc light intensity-conversion.
Heretofore described arc light protective device by interchanger respectively with current protection unit and one or more arc
Light expanding element connects, and the arc light expanding element is connected with multiple arc photosensors.
Further, the tripping output port of the arc light protective device respectively with the high-pressure side of the first transformer and low
Breaker and the busbar breaker connection of pressure side, the current detecting end of the arc light protective device are become by current line and first
The first current sensor connection of the low-pressure side of depressor, the arc light sensor input interface of the arc light protective device also with it is multiple
Arc photosensor connects.
Further, the tripping output port of the current protection unit high-pressure side and low pressure with the second transformer respectively
The breaker connection at end, the current detecting end of the arc light protective device pass through current line and the low-pressure side of the second transformer
Second current sensor connects.
Further, first low-voltage bus bar is connected by busbar breaker with the second low-voltage bus bar, the arclight
Protective device is also connected with protection for feed line unit and monitoring of working condition unit.
Further, as shown in figure 5, the arc light protective device includes casing 11 and internal circuit board, the casing
11 main panel is equipped with liquid crystal display 12, a variety of LED lights 13, function button 14 and guide key 15, the casing
11 rear panel is equipped with alternating current input interface, arc light sensor input interface, tripping output port, clock sync cap, logical
Believe interface, monitoring interface, expansion interface and environmental data input interface；
Further, it is abnormal to include power supply indicator, run indicator, synchro light, device for the LED light 13
Indicator light, environmental monitoring indicator light, the out-of-limit indicator light of electric current, the out-of-limit indicator light of arc light, tripping indicator light and maintenance indicator light.
Wherein, green light can be used in power supply indicator, run indicator and synchro light, power supply indicator when having electricity
Bright, run indicator is flickered with 2Hz when having program operation, and synchro light is bright after time synchronization.
Red light can be used in device exception indicator light, the out-of-limit indicator light of electric current, the out-of-limit indicator light of arc light and tripping indicator light, when
Device exception indicator light is bright during device exception, and the out-of-limit indicator light of electric current of more prescribing a time limit when electric current is long is bright, more prescribes a time limit when arc light is long
The out-of-limit indicator light of arc light is bright, and the indicator light that trips after device trips is bright.
Amber light can be used in environmental monitoring indicator light and maintenance indicator light, the environmental monitoring indicator light when environmental monitoring is alarmed
It is bright, when device be arranged to maintenance when overhaul indicator light it is bright.
Further, the function button 14 includes returning to button F1, upper function pages button F2, next function pages
Button F3, main interface button F4 and reset key are returned to.
Further, the guide key 15 is pressed including button, square down button, direction left button, the direction right side on direction
Key and confirmation OK keys.
The function button 14 and/or guide key 15 are touch key-press, and the liquid crystal display 12 is touch display screen.
Further, the touch key-press and touch display screen together as one.
Further, the monitoring of working condition unit includes Temperature Humidity Sensor, radio temperature sensor, fuel gas sensing
Device, wireless humidity sensor, leakage current test unit and leakage current sensor.
The both sides of the front panel are additionally provided with installing plate 16, and multiple installation mounting holes are offered on the installing plate 16.
Arc light protective device in the present invention possesses the acquisition, tripping and signal output of electric current and arc photosensor signal
Ability provides a variety of indicator lights, and the state of arc light protecting device is more visually known convenient for operator.The present invention also provides
Touch display screen and touch key-press support large-size screen monitors to show, and reduce the volume of device, reduce the occupied space of device.The present invention
Also there is abundant external interface, support more functions, the monitoring of visible ray and infrared light can be completed simultaneously.
A kind of 360 degrees omnidirection ring network arc light protection system proposed by the invention carries out arc light guarantor to double-bus
Shield, in order to reduce fault zone, the first low-voltage bus bar and the second low-voltage bus bar are limited by busbar breaker.Electric arc protection
Device and current protection unit are as trip unit.Arc light protective device jumps the first transformation in the first low-voltage bus bar failure
The breaker of device when the first low-voltage bus bar and the second low-voltage bus bar failure, makees breaking failure protection.If it exceeds electric current is determined
Value, when area breaks down, the busbar breaker of arc light protective device the first low-voltage bus bar of tripping and the second low-voltage bus bar.Electricity
The breaker that protection location jumps the second transformer is flowed, while as the breaking failure protection of the second low-voltage bus bar.
Arc light is alerted to be obtained from the alarm relay of arc light protective device, is activated when region is broken down, and system is certainly
Inspection alarm is obtained from arc light protective device alarm relay.
Electric arc protection principle：According to two factors of arc light and current increment, when being detected simultaneously by arc light and current increment
When send trip signal.When system jam, arc optical signal is converted into electric signal by arc photosensor, is aided in by I/O
Unit is transmitted to arc light protective device, and arc light protective device by sensed current signal and reaches initiation value again, that is, sends
Trip signal.
The present invention is designed using distributed mode, is suitable as the protection of mesolow double-bus, possesses flexible attributes of network.
Wherein protection for feed line unit, which can be individually formed, minimizes protection system, and separately protected feeder line is to reduce forced outage scope.Feeder line
Unit also can run on Centralized Monitoring pattern, pass through arc light protective device dispatching communication.Electric arc protection of the present invention is using inspection
It is input quantity to survey arc light and electric current, can individually be protected as overcurrent protection, pure arc protection and arc light and the double criterions of overcurrent.This
System have the advantages that principle is simple, reliable in action is rapid, to primary equipment without particular/special requirement, be adapted to the various methods of operation.
Describe a kind of 360 degrees omnidirection ring network arclight according to the present invention in an illustrative manner above with reference to attached drawing
Guard method.It will be understood by those skilled in the art, however, that a kind of 360 degrees omnidirection ring proposed for the invention described above
Shape net electric arc light protection method can also make various improvement on the basis of present invention is not departed from.Therefore, it is of the invention
Protection domain should be determined by the content of appended claims.
Claims (1)
1. the real-time distributed monitoring system that electric arc protection monitoring method is relied on, including arc light protective device, one or
Multiple arc light expanding elements, transparent optical fibers, current protection unit, protection for feed line unit and monitoring of working condition unit, the arclight
Protective device is connected by interchanger with current protection unit and one or more arc light expanding elements respectively, the arc light extension
Unit is connected by connector with for the transparent optical fibers of 360 degrees omnidirection arc light detecting；
The transparent optical fibers include glass optical fiber, filled layer, filter layer, metal layer and protective layer successively from inside to outside；The filter
Photosphere includes visible ray filter layer and infrared light filter layer；
One end of the transparent optical fibers is connected with connector, and the other end of the transparent optical fibers passes through sensor connector and orientation arc
Optical sensor connects；It is downward in this connection side, arc optical signal is gathered by transparent optical fibers, is oriented by orienting arc photosensor
The arc optical signal of monitored equipment is gathered, and passes through connector and believes the arc light that transparent optical fibers and orientation arc photosensor collect
Number it is sent to arc light protective device, arc light expanding element or current protection unit；
Arc light protective device is a kind of core of 360 degrees omnidirection ring network arc light protection system, is responsible for the information of system
Collect, logic analysis, breakdown judge and tripping control, while manage all expanding elements, feeder unit can also be concentrated
Monitoring；
Protection for feed line unit can gather 4 road arc lights, and 4 road TA current acquisition passages are that is, maximum that adjacent 2 feedbacks can be achieved
The arc light and current protection of line realize fast shut-off failure；
Arc light expanding element：Expansible 16 road arc light acquisition channel；
Current protection unit：Expansible 6 road TA current acquisitions passage and tripping passage；
Orient arc photosensor：It is responsible for detection arc light information, is digital signal by arc light intensity-conversion；
The arc light protective device is connected by interchanger with current protection unit and one or more arc light expanding elements respectively
It connects, the arc light expanding element is connected with multiple orientation arc photosensors；
The tripping output port of the arc light protective device respectively with the high-pressure side of the first transformer and the breaker of low-pressure end
And busbar breaker connection, the current detecting end of the arc light protective device pass through current line and the low-pressure side of the first transformer
The connection of the first current sensor, the arc light sensor input interface of the arc light protective device also with multiple orientation arc light sensors
Device connects；
The tripping output port of the current protection unit connects respectively with the breaker of the high-pressure side of the second transformer and low-pressure end
It connects, the current detecting end of the arc light protective device passes through the second current sense of current line and the low-pressure side of the second transformer
Device connects；
First low-voltage bus bar is connected by busbar breaker with the second low-voltage bus bar, and the arc light protective device is also protected with feeder line
Shield unit is connected with monitoring of working condition unit；
The arc light protective device includes casing and internal circuit board, the main panel of the casing be equipped with liquid crystal display,
A variety of LED lights, function button and guide key, the rear panel of the casing are equipped with alternating current input interface, arc light biography
Feel input interface, tripping output port, clock sync cap, communication interface, monitoring interface, expansion interface and environmental data input
Interface；
The LED light includes power supply indicator, run indicator, synchro light, device exception indicator light, environmental monitoring
The out-of-limit indicator light of indicator light, electric current, the out-of-limit indicator light of arc light, tripping indicator light and maintenance indicator light；
Green light can be used in power supply indicator, run indicator and synchro light, and power supply indicator is bright when having electricity, there is program fortune
Run indicator is flickered with 2Hz during row, and synchro light is bright after time synchronization；
Red light can be used in device exception indicator light, the out-of-limit indicator light of electric current, the out-of-limit indicator light of arc light and tripping indicator light, works as device
Device exception indicator light is bright when abnormal, and the out-of-limit indicator light of electric current of more prescribing a time limit when electric current is long is bright, arc light of more prescribing a time limit when arc light is long
Out-of-limit indicator light is bright, and the indicator light that trips after device trips is bright；
Amber light can be used in environmental monitoring indicator light and maintenance indicator light, and environmental monitoring indicator light is bright when environmental monitoring is alarmed, when
It is bright that device is arranged to maintenance indicator light during maintenance；
The function button includes returning to button, upper function pages button, next function pages button, return main interface button
And reset key；
The guide key includes button on direction, square down button, direction left button, the right button in direction and confirmation OK keys；
The function button and/or guide key are touch key-press, and the liquid crystal display is touch display screen；
The monitoring of working condition unit includes Temperature Humidity Sensor, radio temperature sensor, combustible gas sensor, wireless humidity and passes
Sensor, leakage current test unit and leakage current sensor；
A kind of a kind of corresponding 360 degrees omnidirection ring network arclight of 360 degrees omnidirection ring network arc light protection system
Guard method comprises the following steps：
S1, arc light protective device carry out real-time arc light detecting by orienting arc photosensor to the first transformer terminal, and detection is
It is no to have arc light, it monitors the current signal of the first transformer in real time by the first current sensor, detects current increment；If it detects
Arc light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, arc light protective device disconnects
The high-pressure side breaker of first transformer or low-pressure side breaker；
S2, current protection unit carry out real-time arc light detecting to the second transformer terminal by orienting arc photosensor, detect whether
There is arc light, monitor the current signal of the second transformer in real time by the second current sensor, detect current increment；If detect arc
Light or current anomaly, and pass through rectification, filtering, threshold value comparison processing, after confirming abnormal alarm, then current protection unit disconnects the
The high-pressure side breaker of two transformers or low-pressure side breaker；
S3, arc light protective device and current protection unit are in communication with each other by interchanger；
S4, arc light protective device are also in communication with each other by interchanger and multiple arc light expanding elements, arc light expanding element
Monitored under the monitored equipment under the first low-voltage bus bar and the second low-voltage bus bar is set respectively by orienting arc photosensor
It is standby to carry out arc light detecting；
S401, if arc light alarm occurs in the monitored equipment for detecting under the first low-voltage bus bar, arc light protective device disconnects
The power supply of monitored equipment under first low-voltage bus bar, and disconnect busbar breaker isolates the first low-voltage bus bar and second low
Press busbar；
S402, if arc light alarm occurs in the monitored equipment for detecting under the second low-voltage bus bar, arc light protective device disconnects
The power supply of monitored equipment under second low-voltage bus bar, and disconnect busbar breaker isolates the first low-voltage bus bar and second low
Press busbar
The orientation arc photosensor includes transparent optical fibers sensor, and the transparent optical fibers sensor includes transparent optical fibers, passes through
Transparent optical fibers complete 360 degrees omnidirection arc light monitoring, and pass through transparent optical fibers and form annular monitoring net.
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| CN201510619727.2A CN105226617B (en) | 2015-09-25 | 2015-09-25 | A kind of 360 degrees omnidirection ring network electric arc light protection method |
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| CN201510619727.2A CN105226617B (en) | 2015-09-25 | 2015-09-25 | A kind of 360 degrees omnidirection ring network electric arc light protection method |
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| CN105226617B true CN105226617B (en) | 2018-05-29 |
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| FR3069951B1 (en) * | 2017-08-03 | 2019-08-09 | Schneider Electric Industries Sas | METHOD AND DEVICE FOR PROTECTION AGAINST INTERNAL ARC DEFECTS IN AN ELECTRICAL DISTRIBUTION SYSTEM, AND ELECTRICAL CABINET HAVING SUCH A DEVICE |
| CN113381380B (en) * | 2021-06-17 | 2023-06-27 | 广东韶钢松山股份有限公司 | Electrical equipment protection method and device and electrical equipment |
| CN115632379B (en) * | 2022-11-09 | 2023-06-16 | 安徽得润电气技术有限公司 | Arc light protection system for vcs isolating switch box with multi-path detection |
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| CN101860080B (en) * | 2010-05-18 | 2012-07-04 | 武汉国测科技股份有限公司 | Distribution network metering and protection integral device suspended at high-voltage side |
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|---|---|---|---|---|
| CN203589715U (en) * | 2013-11-26 | 2014-05-07 | 成都比善科技开发有限公司 | Master-control-type arc light protection system |
| CN104201655A (en) * | 2014-08-14 | 2014-12-10 | 国家电网公司 | Automatic protection system of unattended substation |
| CN204389023U (en) * | 2015-02-06 | 2015-06-10 | 成都比善科技开发有限公司 | A kind of arclight sensor of loop mode |
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| CN105226617A (en) | 2016-01-06 |
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Denomination of invention: A 360 degree omnidirectional circular network arc protection method Effective date of registration: 20230818 Granted publication date: 20180529 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chengdu high tech Industrial Development Zone Branch Pledgor: CHENGDU GONGBAILI AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2023510000200 |
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