CN105322506A - Reverse current protection rectifier unit - Google Patents
Reverse current protection rectifier unit Download PDFInfo
- Publication number
- CN105322506A CN105322506A CN201410294032.7A CN201410294032A CN105322506A CN 105322506 A CN105322506 A CN 105322506A CN 201410294032 A CN201410294032 A CN 201410294032A CN 105322506 A CN105322506 A CN 105322506A
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- reverse current
- protection
- single fighter
- bus
- rectifier
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Abstract
The present invention discloses a reverse current protection rectifier unit. A DC output positive bus bar or negative bus bar of each single unit is connected with a single unit reverse current detection box. The reverse current protection rectifier unit also includes a main reverse current protection box. The main reverse current protection box is connected with a circuit breaker protection circuit of the single unit and the reverse current detection box of the single unit. The reverse current detection box of the single unit includes a reverse current mutual inductor. The reverse current mutual inductor acquires DC bus bar signals. The reverse current mutual inductor transmits short-circuit fault signals to the reverse current detection box of the single unit when the short-circuit faults of the DC bus bar in a rectifier cabinet of the single unit occur, the reverse current detection box of the single unit transmits action signals to the main reverse current protection box, and the main reverse protection box transmits a plurality of action contacts to the circuit breaker protection circuit of each single unit so that a unit feeder line circuit trips out. The reverse current protection rectifier unit is advantageous in that the reverse current protection configuration of the rectifier unit is provided at the DC side, and the human body and equipment safety can be ensured because the rectifier unit is turned off timely when the short-circuit faults of the DC bus bar in the rectifier unit occurs.
Description
Technical field
The present invention relates to a kind of reverse current protection Rectification Power Factor, it is applicable to the multiple Rectification Power Factor reverse current protection of electrolytic aluminium factory.
Background technology
In electrolytic aluminium factory design in recent years, electric power system configuration great majority are 6 ~ 8 Rectification Power Factor is that complete series is DC bus powered; A Rectification Power Factor is made up of distribution system, rectifier transformer, rectifier cabinet and DC bus.The said equipment action principle is that alternating current is become direct current to DC bus powered by rectifier transformer, rectifier cabinet, if Rectification Power Factor DC bus is short-circuited, fault is excised not in time and the infringement jeopardizing personal safety and equipment will be caused heavy losses.
Summary of the invention
To be short-circuited failover technique problem for solving DC side in above-mentioned rectifier cabinet, to the invention provides the configuration of a kind of Rectification Power Factor reverse current protection, object to ensure in unit rectifier cabinet that the DC bus fault that is short-circuited is excised in time and ensured the person and device security.
The present invention adopts following technical scheme to realize:
A kind of reverse current protection Rectification Power Factor, comprise multiple single fighter, each single fighter comprises ac bus, circuit breaker, rectifier transformer, rectifier cabinet, DC bus, described reverse current protection Rectification Power Factor is by ac bus distribution, there is provided AC power through breaker protection to rectifier transformer, after rectifier cabinet rectification, become direct current by alternating current supply DC bus; Export in positive bus-bar or negative busbar at each single fighter direct current and connect a single fighter adverse current detection case, also comprise total reverse current protection case, breaker protection loop and the single fighter adverse current detection case of described total reverse current protection case and single fighter are connected; Described single fighter adverse current detection case comprises adverse current instrument transformer; described adverse current instrument transformer gathers DC bus signal; in the rectifier cabinet of certain single fighter, DC bus is short-circuited fault; adverse current instrument transformer is sent to single fighter adverse current detection case by cable; single fighter adverse current detection case sends actuating signal to total reverse current protection case; total reverse current protection case sends multiple action connection point to the breaker protection loop of each single fighter, and unit feeder assembly is tripped.
Send multiple contact point signal by heavy motor type relay after described total adverse current case receives the upstream signal of any single fighter and make unit circuit breaker trip.
Advantage of the present invention is: the present invention provides a kind of Rectification Power Factor reverse current protection to configure in DC side, in unit rectifier cabinet DC bus be short-circuited fault time cut off in time, ensure that the person and device security.
Accompanying drawing illustrates:
Fig. 1: Rectification Power Factor main wiring diagram
Fig. 2: Rectification Power Factor reverse current protection schematic diagram
Specific implementation method
Below in conjunction with accompanying drawing, the invention will be further described illustrates, but protection scope of the present invention is not embodiment limit; As shown in Figure 1 and Figure 2, the present invention includes multiple single fighter, each single fighter comprises ac bus 1, circuit breaker 2, rectifier transformer 3, rectifier cabinet 4, DC bus 6, described reverse current protection Rectification Power Factor is by ac bus 1 distribution, protect through circuit breaker 2 and provide AC power to rectifier transformer 3, after rectifier cabinet 4 rectification, become direct current by alternating current supply DC bus 6; Export in positive bus-bar or negative busbar at each single fighter direct current and connect a single fighter adverse current detection case 5, also comprise total reverse current protection case 7, circuit breaker 2 protective loop and the single fighter adverse current detection case 5 of described total reverse current protection case 7 and single fighter are connected; Described single fighter adverse current detection case 5 comprises adverse current instrument transformer 51; described adverse current instrument transformer 51 gathers DC bus 6 signal; in the rectifier cabinet of certain single fighter, DC bus 6 is short-circuited fault; adverse current instrument transformer 51 is sent to single fighter adverse current detection case 5 by cable 53; single fighter adverse current detection case 5 sends actuating signal to total reverse current protection case 7; total reverse current protection case 7 sends multiple action connection point to the breaker protection loop of each single fighter, and unit feeder assembly is tripped.
Send multiple contact point signal by heavy motor type relay after described total adverse current case 7 receives the upstream signal of any single fighter and make unit circuit breaker trip.
Claims (2)
1. a reverse current protection Rectification Power Factor, comprise multiple single fighter, each single fighter comprises ac bus, circuit breaker, rectifier transformer, rectifier cabinet, DC bus, described reverse current protection Rectification Power Factor is by ac bus distribution, there is provided AC power through breaker protection to rectifier transformer, after rectifier cabinet rectification, become direct current by alternating current supply DC bus; It is characterized in that: export in positive bus-bar or negative busbar at each single fighter direct current and connect a single fighter adverse current detection case, also comprise total reverse current protection case, breaker protection loop and the single fighter adverse current detection case of described total reverse current protection case and single fighter are connected; Described single fighter adverse current detection case comprises adverse current instrument transformer; described adverse current instrument transformer gathers DC bus signal; in the rectifier cabinet of certain single fighter, DC bus is short-circuited fault; adverse current instrument transformer is sent to single fighter adverse current detection case by cable; single fighter adverse current detection case sends actuating signal to total reverse current protection case; total reverse current protection case sends multiple action connection point to the breaker protection loop of each single fighter, and unit feeder assembly is tripped.
2. reverse current protection Rectification Power Factor according to claim 1, is characterized in that: send multiple contact point signal by heavy motor type relay after total adverse current case receives the upstream signal of any single fighter and make unit circuit breaker trip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294032.7A CN105322506A (en) | 2014-06-26 | 2014-06-26 | Reverse current protection rectifier unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294032.7A CN105322506A (en) | 2014-06-26 | 2014-06-26 | Reverse current protection rectifier unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105322506A true CN105322506A (en) | 2016-02-10 |
Family
ID=55249373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410294032.7A Pending CN105322506A (en) | 2014-06-26 | 2014-06-26 | Reverse current protection rectifier unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105322506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123625A (en) * | 2017-12-26 | 2018-06-05 | 哈尔滨工业大学 | A kind of 500KA aluminium electroloysis power-supply rectifying and Fuzzy control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0915548A2 (en) * | 1997-11-07 | 1999-05-12 | Hüls Aktiengesellschaft | Rectifier device with protective circuit and method for switching off a rectifier device |
| CN1937346A (en) * | 2006-09-13 | 2007-03-28 | 沈阳铝镁设计研究院 | Power-supply rectifying system at direct current side with protection device |
| CN101141061A (en) * | 2007-06-29 | 2008-03-12 | 包头铝业股份有限公司 | Commutation locker cabinet electric arc protecting equipment |
| CN103107519A (en) * | 2011-11-14 | 2013-05-15 | 沈阳铝镁设计研究院有限公司 | Relay protection device of large-scale rectifier unit |
-
2014
- 2014-06-26 CN CN201410294032.7A patent/CN105322506A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0915548A2 (en) * | 1997-11-07 | 1999-05-12 | Hüls Aktiengesellschaft | Rectifier device with protective circuit and method for switching off a rectifier device |
| CN1937346A (en) * | 2006-09-13 | 2007-03-28 | 沈阳铝镁设计研究院 | Power-supply rectifying system at direct current side with protection device |
| CN101141061A (en) * | 2007-06-29 | 2008-03-12 | 包头铝业股份有限公司 | Commutation locker cabinet electric arc protecting equipment |
| CN103107519A (en) * | 2011-11-14 | 2013-05-15 | 沈阳铝镁设计研究院有限公司 | Relay protection device of large-scale rectifier unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123625A (en) * | 2017-12-26 | 2018-06-05 | 哈尔滨工业大学 | A kind of 500KA aluminium electroloysis power-supply rectifying and Fuzzy control system |
| CN108123625B (en) * | 2017-12-26 | 2019-07-23 | 哈尔滨工业大学 | A kind of 500KA aluminium electroloysis power-supply rectifying and Fuzzy control system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |