EP2189998A1 - Agencement de commutation de générateur - Google Patents
Agencement de commutation de générateur Download PDFInfo
- Publication number
- EP2189998A1 EP2189998A1 EP08169795A EP08169795A EP2189998A1 EP 2189998 A1 EP2189998 A1 EP 2189998A1 EP 08169795 A EP08169795 A EP 08169795A EP 08169795 A EP08169795 A EP 08169795A EP 2189998 A1 EP2189998 A1 EP 2189998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- generator
- main
- arrangement according
- switch arrangement
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/168—Impedances connected with contacts the impedance being inserted both while closing and while opening the switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/002—Very heavy-current switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
Definitions
- the invention relates to a generator switch arrangement according to the preamble of claim 1. Such arrangements are used in power plants for producing a separable connection of generators to the electrical network.
- Commonly known generator switch assemblies include a single SF 6 switch. Such arrangements can switch as short-circuit currents up to about 210kA at rated voltages up to about 30kV. Increasingly, however, higher switching capacities are required, in particular for switching off even higher short-circuit currents, which can not be achieved with such generator switch arrangements.
- a generator switch arrangement with a secondary current path in which approximately a semiconductor switch made up of turn-off thyristors and a PTC resistor are connected in series is out of order EP 1 014 403 A1 known.
- EP 1 098 332 A2 shows a similar arrangement. Because of the limited switching power of the semiconductor switches, however, only short-circuit currents of a few tens of kA can be handled with such generator switch arrangements.
- the invention is based on the object to provide a generic generator switch arrangement, with the very high short-circuit currents, preferably of more than 210kA, can be handled at rated voltages of up to 36kV.
- the generator switch assembly has a main current path 1, in which a main switch 2 is located and a secondary current path 3, in which in series a generator side arranged damping resistor 4 and a sub-switch 5 are.
- a main current path 1 in which a main switch 2 is located
- a secondary current path 3 in which in series a generator side arranged damping resistor 4 and a sub-switch 5 are.
- the main switch 2 is designed as a closed SF 6 switch, ie as a SF 6 switch with a closed gas volume with a rated current contact arrangement and a burn-off contact arrangement parallel thereto. It may be a switch of the type HEC 7, HEC 8 or HECS ABB. These switches can break short-circuit currents of 140-160kA at a rated voltage of up to 30kV or 161-190kA at 27.5kV and 191-210kA at 25.2kV. The rated current at 50Hz mains frequency is 24kA, 28kA or 18kA. The switches come with pressures of about 6 bar and therefore require no large drives and no compressors.
- the sub-switch 5 need not have a rated current contact arrangement. It can be about a vacuum switch, eg VE1 of the ABB, the short-circuit currents of up to 31.5kA can switch off at a rated voltage of 36kV. It is also possible to use another encapsulated SF 6 switch, eg ABB's HD4, which can handle short-circuit currents of up to 50kA with a nominal voltage of up to 40.5kV. The rated current contact arrangement provided with this switch can be omitted. Again, the eligible switch only low requirements in terms of drive and maintenance. In general, sub-switches are switches with rated voltages between 20kV and 42kV and rated currents between 2.5kA and 3.6kA, capable of handling maximum short-circuit currents between 30kA and 50kA.
- the damping resistor 4 must be able to absorb a relatively high power.
- it is formed as a wire resistor, which consists of a plurality of parallel resistance wires of a refractory material. Its resistance value can be between 0.1 ⁇ and 10 ⁇ . It is preferably between 1 ⁇ and 5 ⁇ .
- the main switch 2 In a shutdown, especially in the event of a short circuit, the main switch 2 is first opened, wherein the current commutes when opening the rated current contact arrangement on the Abbrandpfad with the Abbrandcardan ever. In the separation of the Abbrand tokene an arc is drawn between them, which increases the voltage drop in the main current path 1 and causes a predominant commutation of the Maustrom path 3, which has a reduction of the current in the main current path 1 result, which deletes the arc in the main current path 1 between allowed the burn-off contacts at the next current zero crossing. After extinguishing the arc in the main current path, the current is thus completely commutated to the secondary current path 3.
- the contact arrangement of the sub-switch 5 is opened.
- the damping resistor 4 limited after the extinguishment of the arc in the main switch 2 under high power consumption, the short-circuit current, so that the same can be safely switched off by the relatively small sub-switch 5.
- short-circuit currents up to 250kA can be switched off at nominal voltages up to about 36 kV with the described generator switch arrangement, whereby even the highest current requirements are met.
Landscapes
- Control Of Eletrric Generators (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08169795A EP2189998A1 (fr) | 2008-11-24 | 2008-11-24 | Agencement de commutation de générateur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08169795A EP2189998A1 (fr) | 2008-11-24 | 2008-11-24 | Agencement de commutation de générateur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2189998A1 true EP2189998A1 (fr) | 2010-05-26 |
Family
ID=40139422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08169795A Withdrawn EP2189998A1 (fr) | 2008-11-24 | 2008-11-24 | Agencement de commutation de générateur |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2189998A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514872A1 (fr) * | 1991-05-23 | 1992-11-25 | Hitachi, Ltd. | Disjoncteur avec une résistance en parallèle |
EP1014403A1 (fr) | 1998-12-21 | 2000-06-28 | Asea Brown Boveri AG | Interrupteur limiteur de courant |
EP1098332A2 (fr) | 1999-11-08 | 2001-05-09 | ABB Hochspannungstechnik AG | Interrupteur limiteur de courant rapide |
FR2896335A1 (fr) * | 2006-01-17 | 2007-07-20 | Areva T & D Sa | Disjoncteur de generateur avec resistance inseree |
-
2008
- 2008-11-24 EP EP08169795A patent/EP2189998A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514872A1 (fr) * | 1991-05-23 | 1992-11-25 | Hitachi, Ltd. | Disjoncteur avec une résistance en parallèle |
EP1014403A1 (fr) | 1998-12-21 | 2000-06-28 | Asea Brown Boveri AG | Interrupteur limiteur de courant |
EP1098332A2 (fr) | 1999-11-08 | 2001-05-09 | ABB Hochspannungstechnik AG | Interrupteur limiteur de courant rapide |
FR2896335A1 (fr) * | 2006-01-17 | 2007-07-20 | Areva T & D Sa | Disjoncteur de generateur avec resistance inseree |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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AKY | No designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20101127 |