CN102646963A - Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet - Google Patents
Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet Download PDFInfo
- Publication number
- CN102646963A CN102646963A CN2012101068074A CN201210106807A CN102646963A CN 102646963 A CN102646963 A CN 102646963A CN 2012101068074 A CN2012101068074 A CN 2012101068074A CN 201210106807 A CN201210106807 A CN 201210106807A CN 102646963 A CN102646963 A CN 102646963A
- Authority
- CN
- China
- Prior art keywords
- arc
- unit
- arclight
- signal
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses an internal fault arc online monitoring and protecting system of a distributed multi-point switch cabinet, comprising an arc opto-sensor, wherein the arc opto-sensor sends acquired optical signals to an arc optical signal detection unit; the arc optical signal detection unit is connected to a fault analysis unit; the fault analysis unit is connected to a monitoring multiplex extension unit; and the fault analysis unit performs data processing on an arc fault arc optical signal and then sends the processing result to the monitoring multiplex extension unit. The internal fault arc online monitoring and protecting system of the distributed multi-point switch cabinet is economic and practicable, simple and convenient for mounting, good in antijamming capability, convenient for popularization and utilization, and suitable for various switch cabinets, etc.
Description
Technical field
The present invention relates to a kind of Distributed Multi switch cubicle internal fault electric arc on-line monitoring and protection system, be applicable to fault monitoring and protection field.
Background technology
The inner arc light short trouble of switch cubicle is a kind of very serious fault in the distribution system; Tend to cause catastrophic consequence; The various fault electric arc effects that huge energy produced that its internal arc burning discharges; Seriously burn expensive switchgear, short-circuit current rush can damage main transformer, causes long-time power failure.More serious is near staff's human casualty accident it also can cause.At present, mesolow switch cubicle in actual motion and busbar fault protection scheme mainly contain three kinds: the high impedance bus protection scheme of transformer reserve overcurrent protection scheme, feeder line overcurrent protection locking transformer overcurrent protection scheme and employing circulation principle.More than three kinds of schemes owing to all surpass the maximum arcing time (1 OOms) of the inner tolerance of switch cubicle operate time, all can not satisfy quick excision fault or protect the requirement of coverage.Arc light is to detect arc short-circuit method the most fast and effectively, but does not carry out short circuit device for monitoring and system according to arclight so far.
Summary of the invention
To the problems referred to above; The object of the present invention is to provide Distributed Multi switch cubicle internal fault electric arc on-line monitoring and protection system; Adopting the arc light that sends when detecting arc fault is criterion; Be used with mounted relay protection device, reach the purpose of carrying out the short circuit monitoring and protect distribution system.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
Distributed Multi switch cubicle internal fault electric arc on-line monitoring and protection system, it comprises an arclight transducer, this arclight transducer is delivered to the arclight detecting signal unit with the light signal that collects; The arclight detecting signal unit is connected with the accident analysis unit; The accident analysis unit is connected with monitoring multichannel expanding element, and the accident analysis unit carries out the arc fault arc optical signal to deliver to monitoring multichannel expanding element to result after the data processing.
This system is connected with protective relaying device, and protective relaying device is connected with circuit breaker.
The arclight detecting signal unit also is connected with a timing unit, and timing unit carries out timing to the time that the arclight signal continues; Timing unit is connected with the accident analysis unit.
Monitoring multichannel expanding element comprises encoder and multi-channel data selector; Encoder receives the signal that the transmission of accident analysis unit comes, and carries out behind the geocoding signal being sent to multi-channel data selector; Multi-channel data selector is exported one road fault-signal; Said encoder also is connected with the LED display module.
This system is Distributed Multi switch cubicle internal fault electric arc on-line monitoring and the protection system based on ARM; Mainly form by arclight transducer, arclight detecting signal unit, timing unit, accident analysis unit, monitoring multichannel expanding element; The arclight transducer is delivered to the arclight detecting signal unit with the light signal that collects; Deliver to the accident analysis unit through the processing of arclight detecting signal unit, timing unit will carry out timing to the time that the arclight signal continues, and the accident analysis unit carries out the data processing judgement with the arc fault arc optical signal and sends trip signal; With signal conveys to existing protective relaying device; In a single day protective relaying device detects the electric arc arc light and surmounts restriction, cooperates with electric current that inner CT surveys, and sending upstream circuit breaker that tripping operation indication makes fault loop separating brake immediately.
But to return number numerous for circuit in the mesolow switch cubicle, and protective relaying device does not have enough switching value interfaces, and corresponding arclight protection needs multichannel to expand.So in system, be provided with a monitoring multichannel expanding element, monitoring multichannel expanding element realization multichannel is imported the fault-signal of one tunnel output.
Beneficial effect of the present invention is: this system is not only simple in structure; With low cost, and operate time is fast, and antijamming capability is strong; Not only can use separately also can be integrated with various protective relaying devices; The use of expanding element makes a cover arclight monitoring can protect more loop with protection system, is fit to the mesolow switch cubicle and uses, thereby make switch cubicle increase at cost that security technique level and added value all are greatly improved under few situation.
Description of drawings
Accompanying drawing 1 is a schematic diagram of the present invention;
Accompanying drawing 2 is a monitoring multichannel expanding element structure chart of the present invention;
Accompanying drawing 3 is a fault location display circuit schematic diagram of the present invention.
Wherein, 1, arclight transducer; 2, arclight detecting signal unit; 3, accident analysis unit; 4, monitoring multichannel expanding element; 5, timing unit; 6, protective relaying device; 7, circuit breaker; 8, encoder; 9, multi-channel data selector; 10, LED display module.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
In Fig. 1, Distributed Multi switch cubicle internal fault electric arc on-line monitoring and protection system, it comprises an arclight transducer 1, this arclight transducer 1 is delivered to arclight detecting signal unit 2 with the light signal that collects; Arclight detecting signal unit 2 is connected with accident analysis unit 3; Accident analysis unit 3 is connected with monitoring multichannel expanding element 4, and accident analysis unit 3 carries out the arc fault arc optical signal to deliver to monitoring multichannel expanding element 4 to result after the data processing.
This system is connected with protective relaying device 6, and protective relaying device 6 is connected with circuit breaker 7.
Arclight detecting signal unit 2 also is connected with a timing unit 5, and the time that 5 pairs of arclight signals of timing unit continue is carried out timing; Timing unit 5 is connected with accident analysis unit 3.
In Fig. 2, monitoring multichannel expanding element 4 comprises encoder 8 and multi-channel data selector 9; Encoder 8 receives the signal that 3 transmission of accident analysis unit come, and carries out behind the geocoding signal being sent to multi-channel data selector 9; Multi-channel data selector 9 outputs one road fault-signal; Said encoder 8 also is connected with LED display module 10.Encoder 8 can adopt the 74LS148 chip to realize.Multi-channel data selector 9 can adopt the STC12C5A60S2 single-chip microcomputer to realize.
In Fig. 3, be example with 8 road detecting units, 8 road detecting units are carried out the numbering of S0-S7; The address of the fault electric arc of encoder output demonstrates numeral with the decoding diode; From this numeral just like a cork the failure judgement signal from which detecting unit, thereby recognize fault electric arc occurs in which position of switch cubicle, every of diode can show 16 different numerals at most; So every cover arc photosensor can have 16 detecting units at most; Whichsoever arc fault has taken place in detecting unit, and the numeral from diode can directly judge then and overhaul, and the expansion of some unit simultaneously can make detecting unit quantity increase once more; Make detection range wider, thereby the protection of switching devices is more abundant.
Though the above-mentioned accompanying drawing specific embodiments of the invention that combines is described; But be not restriction to protection range of the present invention; One of ordinary skill in the art should be understood that; On the basis of technical scheme of the present invention, those skilled in the art need not pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (4)
1. Distributed Multi switch cubicle internal fault electric arc on-line monitoring and protection system, it is characterized in that: it comprises an arclight transducer, this arclight transducer is delivered to the arclight detecting signal unit with the light signal that collects; The arclight detecting signal unit is connected with the accident analysis unit; The accident analysis unit is connected with monitoring multichannel expanding element, and the accident analysis unit carries out the arc fault arc optical signal to deliver to monitoring multichannel expanding element to result after the data processing.
2. Distributed Multi switch cubicle internal fault electric arc on-line monitoring as claimed in claim 1 and protection system, it is characterized in that: this system is connected with protective relaying device, and protective relaying device is connected with circuit breaker.
3. Distributed Multi switch cubicle internal fault electric arc on-line monitoring as claimed in claim 1 and protection system; It is characterized in that: said arclight detecting signal unit also is connected with a timing unit, and timing unit carries out timing to the time that the arclight signal continues; Timing unit is connected with the accident analysis unit.
4. Distributed Multi switch cubicle internal fault electric arc on-line monitoring as claimed in claim 1 and protection system is characterized in that: said monitoring multichannel expanding element comprises encoder and multi-channel data selector; Encoder receives the signal that the transmission of accident analysis unit comes, and carries out behind the geocoding signal being sent to multi-channel data selector; Multi-channel data selector is exported one road fault-signal; Said encoder also is connected with the LED display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101068074A CN102646963A (en) | 2012-04-13 | 2012-04-13 | Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101068074A CN102646963A (en) | 2012-04-13 | 2012-04-13 | Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102646963A true CN102646963A (en) | 2012-08-22 |
Family
ID=46659615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101068074A Pending CN102646963A (en) | 2012-04-13 | 2012-04-13 | Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102646963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483426A (en) * | 2016-10-10 | 2017-03-08 | 杨勇 | Transmission open acess based on distributed monitoring electric arc and analysis of causes method |
| CN108321709A (en) * | 2018-01-09 | 2018-07-24 | 国网山东省电力公司滨州供电公司 | Observation system in closed high-voltage switch cabinet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735201A (en) * | 1972-07-18 | 1973-05-22 | Ite Imperial Corp | Arcing time relay |
| CN2689428Y (en) * | 2004-04-01 | 2005-03-30 | 江苏长江电气集团有限公司 | Internal electric arc fault detecting protector in switching cabinet |
| US20080170344A1 (en) * | 2007-01-11 | 2008-07-17 | Square D Company | Arcing fault protection system for an air arc switchgear enclosure |
| CN102332753A (en) * | 2011-09-21 | 2012-01-25 | 山东大学 | Intelligentized switch cabinet integrative monitoring system |
-
2012
- 2012-04-13 CN CN2012101068074A patent/CN102646963A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735201A (en) * | 1972-07-18 | 1973-05-22 | Ite Imperial Corp | Arcing time relay |
| CN2689428Y (en) * | 2004-04-01 | 2005-03-30 | 江苏长江电气集团有限公司 | Internal electric arc fault detecting protector in switching cabinet |
| US20080170344A1 (en) * | 2007-01-11 | 2008-07-17 | Square D Company | Arcing fault protection system for an air arc switchgear enclosure |
| CN102332753A (en) * | 2011-09-21 | 2012-01-25 | 山东大学 | Intelligentized switch cabinet integrative monitoring system |
Non-Patent Citations (1)
| Title |
|---|
| 蔡彬等: "开关柜内部故障电弧的在线检测和保护装置", 《电工技术学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483426A (en) * | 2016-10-10 | 2017-03-08 | 杨勇 | Transmission open acess based on distributed monitoring electric arc and analysis of causes method |
| CN108321709A (en) * | 2018-01-09 | 2018-07-24 | 国网山东省电力公司滨州供电公司 | Observation system in closed high-voltage switch cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201590653U (en) | Photoelectric arc light protection system | |
| EP2315328A2 (en) | String and system employing direct current electrical generating modules and a number of string protectors | |
| CN201846069U (en) | Arc light protector | |
| CN102623967A (en) | Medium-low voltage bus electrical arc light protection method and system | |
| CN104993461A (en) | Relay protection device providing electric arc light protection function | |
| CN201797308U (en) | Microcomputer arc light protection device | |
| CN102646963A (en) | Internal fault arc online monitoring and protecting system of distributed multi-point switch cabinet | |
| CN101582581A (en) | Electricity leakage-prevention and overcurrent protection device | |
| CN201616666U (en) | Multifunctional short circuit protecting system of middle and low-voltage switch cabinet | |
| CN102882196B (en) | Fault isolation method for distribution network containing distributed power sources | |
| CN202550499U (en) | Arc light protection system for middle-low-voltage busbar | |
| CN104538933A (en) | Motor differential protection system and motor differential protection method | |
| CN204886153U (en) | A optic fibre dicyclo net arc light protection device for middle and low voltage bus protection | |
| CN204794054U (en) | A arc light protection system that is used for cubical switchboard cooking to go out circuit | |
| CN110048383A (en) | A kind of power distribution network Distributed Integration protection system | |
| CN106887827A (en) | A kind of main control unit for arc protection | |
| CN204068219U (en) | A kind of regulator cubicle arc light protecting device | |
| CN205489493U (en) | Arc light protective device | |
| CN203466561U (en) | Digital electric arc protection system for chemical engineering equipment | |
| CN201611775U (en) | Arc light monitoring and protecting device for bus compartment | |
| CN209472376U (en) | A kind of arc light protecting device | |
| CN202455048U (en) | Bus failure main protection device of track traffic power supply system | |
| CN201608515U (en) | Electric arc light protecting system for feeder cable in switch cabinet | |
| CN201629565U (en) | Switch cabinet arc light protection system with compact structure | |
| CN103441474A (en) | Digital electric arc protection system for chemical engineering equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121113 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant after: Shandong Research Inst. of Electric Power Applicant after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant before: Shandong Research Inst. of Electric Power |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120822 |