CN103441474A - Digital electric arc protection system for chemical engineering equipment - Google Patents
Digital electric arc protection system for chemical engineering equipment Download PDFInfo
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- CN103441474A CN103441474A CN2013103826432A CN201310382643A CN103441474A CN 103441474 A CN103441474 A CN 103441474A CN 2013103826432 A CN2013103826432 A CN 2013103826432A CN 201310382643 A CN201310382643 A CN 201310382643A CN 103441474 A CN103441474 A CN 103441474A
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- arc light
- arc
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- chemical plant
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Abstract
The invention relates to a digital electric arc protection system for chemical engineering equipment. The digital electric arc protection system comprises a main control unit, a current detection unit, an arc detection unit and a breaker, the current detection unit is arranged on a bus return circuit of the chemical engineering equipment, the arc detection unit is arranged in a bus compartment, the breaker is arranged at the inlet position of a bus, and the main control unit is respectively connected with the current detection unit, the arc detection unit and the breaker. Compared with the prior art, the digital electric arc protection system has the advantages of improving safety of the chemical engineering equipment, shortening fault time and the like.
Description
Technical field
The present invention relates to a kind of arc light protection system, especially relate to a kind of arc light protecting system of the digital electric for chemical plant installations.
Background technology
Electric power system is because various short circuit reasons can cause arc light, and arc light can, with the speed outburst of 300m/s, destroy any material in way.As long as do not cut off the power supply in system, arc light will exist always.In existing chemical plant installations electric substation projects of relay protection standard; 35kV and following switch cubicle are not required to arrange special-purpose quick bus protection; but the busbar short-circuit fault is excised in the standby overcurrent protection that relies on the upper level transformer; cause fault clearing time to extend; easily cause the device interior arclight to produce; strengthened the degree of injury of fault to equipment, can generation equipment meltdown when serious, the great harm such as blast.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of arc light protecting system of the digital electric for chemical plant installations in order to overcome the defect that above-mentioned prior art exists, and this system can effectively improve the chemical plant installations fail safe, shorten fault time.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of arc light protecting system of the digital electric for chemical plant installations; comprise main control unit, current detecting unit, arc light detecting unit and circuit breaker; described current detecting unit is arranged on the bus bar circuit of chemical plant installations; described arc light detecting unit is arranged in the bus compartment; described circuit breaker is arranged at the point of incoming cables of bus, and described main control unit connects respectively current detecting unit, arc light detecting unit and circuit breaker.
Described main control unit is connected by optical cable between unit with current detecting unit, arc light detecting.
Described arc light detecting unit comprises a plurality of arc photosensors, and an arc photosensor all is set in each bus compartment.
Described arc photosensor is the passive sensor with filtering functions.
Described arc photosensor is installed on the middle part of bus compartment upside.
Described main control unit be provided with Ethernet interface and GPS to the time module.
Compared with prior art, the present invention has the following advantages:
(1) main control unit adopts arc light+electric current comprehensive criterion; the current judgement element adopts the three-phase current detection mode; after action, instantaneous tripping lead-in circuit breaker, with excision faulty section bus, as the main salvo of chemical plant installations median generatrix, ensures whole system unprotect dead band.
(2) the arclight transducer is installed in the upper middle side part of bus compartment, has both guaranteed enough insulation distances, has again enough angles arc light in cabinet can be detected simultaneously, guarantees gamut protection in cabinet.
(3) connecting line of main control unit and detecting unit adopts optical cable not affected by environment but not cable is avoided electromagnetic interference.
(4) the bus compartment of each switch cubicle must be installed independently arc photosensor, makes native system possess fault location function, can determine the particular location that arc light occurs, so that timely processing and the analysis of accident realize fault fast positioning.
(5) arc photosensor adopts the passive sensor with filtering functions of only identifying arclight spectrum, avoids protecting misoperation.
(6) protection system tripping operation outlet is not more than 4ms;
(7) adopt the digitlization Ethernet interface, can conveniently access integrated system; GPS synchronously to the time, self adaptation IRIG-B form or pulse per second (PPS) mode; Failure wave-recording is for up to 10s, standard C omtrade formatted output; The tripping operation outlet logic is able to programme.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1; a kind of arc light protecting system of the digital electric for chemical plant installations; comprise main control unit 1, current detecting unit 2, arc light detecting unit 3 and circuit breaker 4; current detecting unit 2 is arranged on the bus bar circuit of chemical plant installations; arc light detecting unit 3 is arranged in the bus compartment; circuit breaker 4 is arranged at the point of incoming cables of bus, and main control unit 1 connects respectively current detecting unit 2, arc light detecting unit 3 and circuit breaker 4.The detection signal that main control unit 1 receives from current detecting unit 2 arc light detecting unit 3, adopt arc light+electric current as comprehensive criterion, realizes the electric arc protection to the chemical plant installations bus.
Wherein, arc light detecting unit 3 comprises a plurality of arc photosensors, an arc photosensor all is set each bus compartment 5 is interior, which arc photosensor is master control system sent by by the judgement detection signal, thereby carry out fault location, can determine the particular location that arc light occurs, so that timely processing and the analysis of accident realize fault fast positioning.
For fear of electromagnetic interference, main control unit is connected by optical cable between unit with current detecting unit, arc light detecting.Simultaneously, arc photosensor adopts the passive sensor with filtering functions of only identifying arclight spectrum, avoids protecting misoperation.And arc photosensor is installed in the upper middle side part of bus compartment, both guaranteed enough insulation distances, there are again enough angles arc light in cabinet can be detected simultaneously, guarantee gamut protection in cabinet.
In addition, main control unit 1 be provided with Ethernet interface and GPS to the time module, can connect easily external system, and carry out GPS to the time can function.And main control unit 1 has can self adaptation IRIG-B form or pulse per second (PPS) mode, the characteristics such as failure wave-recording, for up to 10s, adopts standard C omtrade formatted output, and the tripping operation outlet logic is able to programme.
Claims (6)
1. the arc light protecting system of the digital electric for chemical plant installations; it is characterized in that; comprise main control unit, current detecting unit, arc light detecting unit and circuit breaker; described current detecting unit is arranged on the bus bar circuit of chemical plant installations; described arc light detecting unit is arranged in the bus compartment; described circuit breaker is arranged at the point of incoming cables of bus, and described main control unit connects respectively current detecting unit, arc light detecting unit and circuit breaker.
2. a kind of arc light protecting system of the digital electric for chemical plant installations according to claim 1, is characterized in that, described main control unit is connected by optical cable between unit with current detecting unit, arc light detecting.
3. a kind of arc light protecting system of the digital electric for chemical plant installations according to claim 1, is characterized in that, described arc light detecting unit comprises a plurality of arc photosensors, and an arc photosensor all is set in each bus compartment.
4. a kind of arc light protecting system of the digital electric for chemical plant installations according to claim 3, is characterized in that, described arc photosensor is the passive sensor with filtering functions.
5. a kind of arc light protecting system of the digital electric for chemical plant installations according to claim 3, is characterized in that, described arc photosensor is installed on the middle part of bus compartment upside.
6. a kind of arc light protecting system of the digital electric for chemical plant installations according to claim 1, is characterized in that, described main control unit be provided with Ethernet interface and GPS to the time module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103826432A CN103441474A (en) | 2013-08-28 | 2013-08-28 | Digital electric arc protection system for chemical engineering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103826432A CN103441474A (en) | 2013-08-28 | 2013-08-28 | Digital electric arc protection system for chemical engineering equipment |
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| Publication Number | Publication Date |
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| CN103441474A true CN103441474A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103826432A Pending CN103441474A (en) | 2013-08-28 | 2013-08-28 | Digital electric arc protection system for chemical engineering equipment |
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| CN (1) | CN103441474A (en) |
Cited By (1)
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635683A (en) * | 2003-12-26 | 2005-07-06 | 西安润辉科技发展有限公司 | Middle/low voltage bus short circuit protection method |
| CN102623967A (en) * | 2012-04-07 | 2012-08-01 | 山东电力研究院 | Medium-low voltage bus electrical arc light protection method and system |
| CN203466561U (en) * | 2013-08-28 | 2014-03-05 | 上海建安化工设计有限公司 | Digital electric arc protection system for chemical engineering equipment |
-
2013
- 2013-08-28 CN CN2013103826432A patent/CN103441474A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635683A (en) * | 2003-12-26 | 2005-07-06 | 西安润辉科技发展有限公司 | Middle/low voltage bus short circuit protection method |
| CN102623967A (en) * | 2012-04-07 | 2012-08-01 | 山东电力研究院 | Medium-low voltage bus electrical arc light protection method and system |
| CN203466561U (en) * | 2013-08-28 | 2014-03-05 | 上海建安化工设计有限公司 | Digital electric arc protection system for chemical engineering equipment |
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 |
| CN106483426B (en) * | 2016-10-10 | 2019-08-02 | 杨勇 | Transmission open acess and analysis of causes method based on distributed monitoring electric arc |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131211 |
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| RJ01 | Rejection of invention patent application after publication |