CN101141061A - Commutation locker cabinet electric arc protecting equipment - Google Patents
Commutation locker cabinet electric arc protecting equipment Download PDFInfo
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- CN101141061A CN101141061A CNA2007101267749A CN200710126774A CN101141061A CN 101141061 A CN101141061 A CN 101141061A CN A2007101267749 A CNA2007101267749 A CN A2007101267749A CN 200710126774 A CN200710126774 A CN 200710126774A CN 101141061 A CN101141061 A CN 101141061A
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Abstract
The invention relates to a rectifying cabinet electric arc protective device, which comprises a power module supplying power to the whole electric arc protective device, an arc detection main unit for managing and controlling the whole electric arc protective device, an arc detection assistant unit for collecting the light information from an arc sensor, an over-current detection unit for generating the tripping logical function, and an arc detection probe. The invention is characterized in that the arc detection probe is connected with the arc detection main unit and the arc detection assistant unit through a long optical fiber with photosensitive property at the front section. Moreover, the invention has advantages of ensuring the rectifying device to quickly and selectively cut the failure set or the feeding breaker when in arc fault, thereby radically limiting the duration of the failure arc and eliminating the harm to various personnel and devices caused by arc short circuit as well as reducing the sever economic loss brought about by accident expansion.
Description
One, technical field:
The present invention relates to a kind of commutation locker cabinet electric arc protecting equipment, particularly a kind of protective device that is used for the protection silicon rectifier device arc fault of aluminum electrolysis industry power-supply rectifying system.
Two, background technology:
Silicon rectifier device (rectifier cabinet) be the aluminium electroloysis power-supply rectifying main equipment, its fail safe, reliability directly affect normally carrying out of electrolysis production.Along with the continuous expansion of Aluminium Electrolysis scale, the capacity of silicon rectifier device also increases thereupon, when the arclight short trouble takes place, because capacity of short circuit is huge, generally all the rectifier cabinet explosion accident can take place, and causes the electrolytic series full cut-off.Electrolytic series full cut-off electricity and commutation system equipment breakdown have caused enormous economic loss to enterprise.Simultaneously, the various fault electric arc effects that huge energy produced that arc burning discharges in the rectifier cabinet are not only damaged native system equipment and nearby device, near staff's human casualty accident also can causing.At present, traditional design is still continued to use in jumbo silicon rectifier cubicle design, just strengthened the dielectric strength of rectifying installation, the current protection design of rectifier cabinet still is an overload protection, the time of overload protection action is generally more than 500ms, components and parts break down in rectifier cabinet, when causing among a small circle arclight, existing insulation and protection system be arc and timely open failure point effectively, cause the blast of arc light expanded range, rectifier cabinet arc short-circuit, and the arc short-circuit accident relies on fast tripping protection action disengagement failure point when taking place often; Obviously, existing protection scheme can not satisfy the requirement of quick excision fault and protection coverage.
The arc short-circuit accident is the ubiquitous problem of aluminium industry, and over the past two years, the great short circuit accident of tens of rectifier cabinets had taken place in each big aluminium manufacturer, had brought economic loss in various degree to enterprise.Guarantee that the safe operation of rectifier cabinet has become the problem of the very urgent solution of aluminium electroloysis industry.The arclight protection system is widely used in the ultrahigh speed of Utilities Electric Co. power plant and transformer station, industry and commercial distribution system at present abroad, in low-tension switch cabinet and the bus protection system, be one of the main salvo in important places such as electric power system, power plant.External application experience shows, the arclight protection system can alleviate the damaged condition of power supply-distribution system equipment to greatest extent and provide personnel protection near staff.Domestic, the arc protection system was applied to part power plant and some 10kV-35kV transformer stations in only nearest 2 years, and Xiang Guan State Grid's industry standard is not also put into effect as yet therewith.At present, domestic have two tame aluminium manufacturers (east wish and add peaceful Aluminum) the arc protection device that just put into operation in rectifier cabinet, but there is defective in design in this arc protection device, the protective device malfunction has all taken place and causes the accident of electrolytic series full cut-off electricity.
Three, summary of the invention:
The objective of the invention is in time to disconnect the arc fault point at the particularity and the existing protection system in aluminium sector application field; cause the problem of equipment fault extension; guarantee rectifying installation can be fast when arc fault takes place, open failure unit or lead-in circuit breaker selectively; duration of fault restriction electric arc fundamentally; eliminate the caused personnel at all levels of arc short-circuit, equipment harm, reduce simultaneously because the heavy economic losses that the accident extension causes provides a kind of commutation locker cabinet electric arc protecting equipment.
The objective of the invention is to realize in the following manner:
The present invention includes and be used for providing to whole arclight protective device that the power module of power supply, the arc light that is used to manage and control whole arclight protective device detect master unit, the arc light that is used to gather from the optical information of arc photosensor detects auxiliary unit, the over-current detection unit that is used to generate the Trip Logic function, arc light detection probe, it is characterized in that: the arc light detection probe is to detect master unit with arc light and arc light detection auxiliary unit connects by the long optical fibers that leading portion has a photosensitive property.
Advantage of the present invention is: can guarantee rectifying installation when arc fault takes place fast, open failure unit or lead-in circuit breaker selectively, duration of fault restriction electric arc fundamentally, eliminate the caused personnel at all levels of arc short-circuit, equipment harm, reduce simultaneously because the heavy economic losses that the accident extension causes.
Four, description of drawings:
Fig. 1 is circuit theory diagrams of the present invention.
Five, execution mode:
With reference to accompanying drawing, the present invention includes and be used for providing that the power module 13 of power supply, the arc light that is used to manage and control whole arclight protective device detect master unit 10, the arc light that is used for gathering from the optical information of arc photosensor (the sensitization section that comprises arc light detection probe and long optical fibers) detects auxiliary unit 11, the over-current detection unit 12 that is used to generate the Trip Logic function, arc light detection probe 6 to whole arclight protective device.To be long optical fibers 9 of having a photosensitive property by leading portion detect master unit 10 and arc light with arc light to arc light detection probe 6 detects auxiliary unit 11 and connect.Described power module 13 adopts the 12VDC power module, and arc light detection probe 6 adopts lens type arc light detection probe, and arc light detection master unit 10, arc light detect auxiliary unit 11, over-current detection unit 12 is all selected the approved product of Finland UTU company production for use.In order to guarantee high vulnerability to jamming and the rapidity of the present invention at high-intensity magnetic field, Optical Fiber Transmission is all adopted in the signal transmission that arc light detection master unit 10 and arc light detect between auxiliary unit 11, the over-current detection unit 12.
Operation principle of the present invention is: in the rectifier cabinet 5, every exchanges 6 diodes 7 in parallel on the brachium pontis, every 6 in parallel of direct current brachium pontis melts 8 soon, amount to 12 and exchange brachium pontis, 12 direct current brachium pontis, other annexes such as folder that also have cooling jacket, sebific duct, diode 7, these components and parts by certain structure by dispersed placement on the alternating current-direct current brachium pontis, if still use original arc light detecting structure, can increase the quantity that arc light detects auxiliary unit 11 and arc light detection probe 6 greatly, thereby increased the complexity of device, also increased the use cost of device.We adopt leading portion to have the long optical fibers 9 of photosensitive property, the sensitization section of long optical fibers 9 will be arranged in the rectifier cabinet, so its length is by the decision of the size of rectifier cabinet, generally should be less than 2 meters, in the present embodiment the sensitization of optical fiber leading portion is partly accomplished about 2.5 meters, on the sensitization section of long optical fibers 9 is fixed on preventing arc dividing plate in the rectifier cabinet 5 along every group of length trend that exchanges brachium pontis and direct current brachium pontis, arc light detection probe 6 is fixed on the bottom of preventing arc dividing plate, like this, the components and parts on rectifier cabinet 5 interior every brachium pontis can both be within the optical fiber detection range.
Detection principle of the present invention is the unit independent principle: every Rectification Power Factor installs all that an arc light detects master unit 10, an arc light detects auxiliary unit 11 and an over-current detection auxiliary unit 12; do not have between apparatus of the present invention of Rectification Power Factor in the assurance commutation system and contact directly, satisfy the requirement of electrolytic aluminium Rectification Power Factor protection configuration.
The course of work of the present invention: the sensitization section of arc light detection probe 6 and long optical fibers 9 detects diode 7 in the rectifier cabinet 5, soon molten 8 etc. when spray arc fault is arranged, by long optical fibers 9 fault-signal being delivered to arc light detects in master unit 10 or the arc light detection auxiliary unit 11, while over-current detection unit 12 detects the electric current that flows through in the primary side current instrument transformer 1 of voltage regulating transformer 3 and reaches the over-current adjusting value, arc light detects master unit 10 and sends trip signal, drives this unit circuit breaker 2 tripping operation or other Rectification Power Factor circuit breaker trips.4 is rectifier transformers in the accompanying drawing 1.
The present invention has satisfied the protection of aluminium electroloysis power-supply rectifying system and has required independently equipping rules of unit, and its tripping operation output contact inserts trip(ping) circuit through auxiliary relay, does not have with major loop to be electrically connected, and protection is thrown and moved back conveniently; Simultaneously can realize protecting intelligent grading control: jump fault unit switch, jump all unit switches, jump into wiretap according to the detected line current of current detecting unit; The protection control loop is accomplished to combine from controlling seamless connection with original.
By practical exploration, we adopt the technology that long optical fibers and lens type arc light detection probe combine in the present invention, solve the inner problem that needs many sonde configurations of electrolytic aluminium rectifier cabinet with succinct, reasonable manner, and eliminated the defective that there is detection blind area in ordinary ultrasonic probe.In the installation process of protective device, adopt passive optical fiber simultaneously, thereby can not influence the original dielectric strength of rectifier cabinet owing to us.
The invention solves original protection system and can not in time disconnect the arc fault point; cause the problem of equipment breakdown extension; can also reduce the possibility of electrolytic series full cut-off or the time of full cut-off electricity to a certain extent; thereby, the arc protection device is installed in rectifier cabinet is had very big economic benefit.
Claims (2)
1. commutation locker cabinet electric arc protecting equipment; comprise being used for providing to whole arclight protective device that the power module of power supply, the arc light that is used to manage and control whole arclight protective device detect master unit, the arc light that is used to gather from the optical information of arc photosensor detects auxiliary unit, the over-current detection unit that is used to generate the Trip Logic function, arc light detection probe, it is characterized in that: the arc light detection probe is to detect master unit with arc light and arc light detection auxiliary unit connects by the long optical fibers that leading portion has a photosensitive property.
2. commutation locker cabinet electric arc protecting equipment according to claim 1 is characterized in that: the arc light detection probe is a lens type arc light detection probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101267749A CN101141061A (en) | 2007-06-29 | 2007-06-29 | Commutation locker cabinet electric arc protecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101267749A CN101141061A (en) | 2007-06-29 | 2007-06-29 | Commutation locker cabinet electric arc protecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101141061A true CN101141061A (en) | 2008-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101267749A Pending CN101141061A (en) | 2007-06-29 | 2007-06-29 | Commutation locker cabinet electric arc protecting equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN101141061A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640406A (en) * | 2008-07-30 | 2010-02-03 | 通用电气公司 | Arc flash detection system, apparatus and method |
| CN101814721A (en) * | 2009-11-24 | 2010-08-25 | 国电南瑞科技股份有限公司 | Direct current protection method with rectifying transformer alternating current protection in direct current power supply system |
| CN102346229A (en) * | 2010-08-04 | 2012-02-08 | 河南省电力公司安阳供电公司 | System for monitoring arc discharge of power towers |
| 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 |
| CN103457351A (en) * | 2013-02-28 | 2013-12-18 | 南京亚电电力设备有限公司 | Integrated switch cabinet intelligent operating system |
| CN103618295A (en) * | 2013-11-29 | 2014-03-05 | 国家电网公司 | Photoelectric type arc light protecting system |
| CN103959622A (en) * | 2011-12-05 | 2014-07-30 | Abb技术有限公司 | Method for eliminating an electric arc driven by at least one voltage source of an inverter circuit |
| CN104476028A (en) * | 2014-11-19 | 2015-04-01 | 柳州市国辉汽车零部件有限公司 | Automatic arc light stopping device |
| CN105322506A (en) * | 2014-06-26 | 2016-02-10 | 沈阳铝镁设计研究院有限公司 | Reverse current protection rectifier unit |
| US9324527B2 (en) | 2008-10-08 | 2016-04-26 | Abb Technology Ltd | Arc monitor |
| CN112981515A (en) * | 2021-05-06 | 2021-06-18 | 四川英创力电子科技股份有限公司 | Current regulation and control method |
-
2007
- 2007-06-29 CN CNA2007101267749A patent/CN101141061A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640406B (en) * | 2008-07-30 | 2015-06-03 | 通用电气公司 | Arc flash detection system, apparatus and method |
| CN101640406A (en) * | 2008-07-30 | 2010-02-03 | 通用电气公司 | Arc flash detection system, apparatus and method |
| US9324527B2 (en) | 2008-10-08 | 2016-04-26 | Abb Technology Ltd | Arc monitor |
| CN101814721A (en) * | 2009-11-24 | 2010-08-25 | 国电南瑞科技股份有限公司 | Direct current protection method with rectifying transformer alternating current protection in direct current power supply system |
| CN101814721B (en) * | 2009-11-24 | 2013-10-09 | 国电南瑞科技股份有限公司 | Direct current protection method with rectifying transformer alternating current protection in direct current power supply system |
| CN102346229A (en) * | 2010-08-04 | 2012-02-08 | 河南省电力公司安阳供电公司 | System for monitoring arc discharge of power towers |
| 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 |
| CN103107519B (en) * | 2011-11-14 | 2016-06-22 | 沈阳铝镁设计研究院有限公司 | A kind of protective relaying device of large-scale Rectification Power Factor |
| CN103959622A (en) * | 2011-12-05 | 2014-07-30 | Abb技术有限公司 | Method for eliminating an electric arc driven by at least one voltage source of an inverter circuit |
| CN103457351B (en) * | 2013-02-28 | 2016-05-25 | 南京亚电电力自动化有限公司 | Integral switch cabinet Intelligent control system |
| CN103457351A (en) * | 2013-02-28 | 2013-12-18 | 南京亚电电力设备有限公司 | Integrated switch cabinet intelligent operating system |
| CN103618295A (en) * | 2013-11-29 | 2014-03-05 | 国家电网公司 | Photoelectric type arc light protecting system |
| CN105322506A (en) * | 2014-06-26 | 2016-02-10 | 沈阳铝镁设计研究院有限公司 | Reverse current protection rectifier unit |
| CN104476028A (en) * | 2014-11-19 | 2015-04-01 | 柳州市国辉汽车零部件有限公司 | Automatic arc light stopping device |
| CN104476028B (en) * | 2014-11-19 | 2016-06-01 | 柳州市国辉汽车零部件有限公司 | The automatic retention device of arc light |
| CN112981515A (en) * | 2021-05-06 | 2021-06-18 | 四川英创力电子科技股份有限公司 | Current regulation and control method |
| CN112981515B (en) * | 2021-05-06 | 2021-09-14 | 四川英创力电子科技股份有限公司 | Current regulation and control method |
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| 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: BAOTOU ALUMINUM CO., LTD. Free format text: FORMER OWNER: BAOTOU ALUMINIUM INDUSTRY CO., LTD. Effective date: 20081010 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20081010 Address after: Donghe District of the Inner Mongolia Autonomous Region city of Baotou post Mao Qi Lai encoding: 014046 Applicant after: Baotou Aluminum Co., Ltd. Address before: Donghe District of the Inner Mongolia Autonomous Region city of Baotou post Mao Qi Lai encoding: 014046 Applicant before: Baotou Aluminium Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080312 |