EP1899999A1 - Electrical switchgear and method for operating an electrical switchgear - Google Patents
Electrical switchgear and method for operating an electrical switchgearInfo
- Publication number
- EP1899999A1 EP1899999A1 EP06764046A EP06764046A EP1899999A1 EP 1899999 A1 EP1899999 A1 EP 1899999A1 EP 06764046 A EP06764046 A EP 06764046A EP 06764046 A EP06764046 A EP 06764046A EP 1899999 A1 EP1899999 A1 EP 1899999A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- switching point
- electrical
- point
- switching device
- 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.)
- Granted
Links
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
- H01H33/60—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
-
- 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
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/125—Load break switches comprising a separate circuit breaker
Definitions
- the invention relates to an electrical switching device with a first angeord ⁇ within an evacuated space Neten switching point and with a second outside of the evaku ⁇ wholesome space arranged switching, and to a ⁇ Ver drive to the operation of such an electrical switching device.
- An electrical switching device of the type mentioned is known for example from US Patent 4,538,039.
- a first switching point of the electrical switching device ⁇ is arranged in an evacuated space.
- a second switching point of the electric switching device is arranged au ⁇ ßerrenz the evacuated space.
- the switching points are designed as a so-called vacuum interrupter and as druckgasiso ⁇ lated switching point.
- the two switching points are arranged side by side lying and shaped independently. This creates an arrangement that requires comparatively much space.
- the object of the invention is therefore to provide an electrical switching device of the type mentioned, which has a reduced footprint.
- the object is achieved according to the invention in an electrical switching device of the type mentioned initially in that the first switching point is surrounded by the second switching point.
- a compact electrical switching device By deviating from the use of conventional switching points and the spatial connection of the first switching point and the second switching point, a compact electrical switching device can be formed.
- Another object of the invention is to provide a suitable method for operating a switching device according to the invention.
- An advantageous method for operating an electrical switching device having a first switching point arranged within an evacuated space and a second switching point arranged outside the eva ⁇ ku mandat room, at wel- ehern in a switch-on the first switching time ⁇ time before the second switching point turns on and at a Switching off the first switching point in time after the second switching point off, has the advantage that possibly occurring switching arcs preferably occur at the first switching point.
- the second switching point is protected by the first switching point from increased wear of the contacts.
- a corresponding encapsulation is provided to limit the evacuated space. This encapsulation is designed to be gas-tight in order to maintain the vacuum.
- switching arcs such as, for example, flashovers during switch-on processes or switch-off arcs
- Adjacent components such as the second Switching point, drive devices or other components, are well protected from the thermal effects of arcing. Thereby, it is for example possible to use for the two ⁇ te switching open switch contacts, since a skip Ü of the arc is prevented with the contacts of the second switching by the encapsulation.
- An advantageous embodiment may further provide that the first switching point and the second switching point are electrically connected in parallel to each other.
- An electrically parallel connection of the two switching points allows specifically to initiate a commutation of a current to be switched off on one of the two switching points.
- the current to be switched off is deliberately extinguished at the first switch point. This is possible, for example, by a time offset of the switching times of the two switching points.
- a further advantageous embodiment can provide that the first switching point relative to each other movably has a first and a second contact piece, which are arranged axially opposite and the second switching point relative to each other movable a first and a second contact piece, which are designed rotationally symmetric and coaxial the switching pieces of the first switching point are arranged.
- the axially opposite contact pieces are moved relative to one another in the axial direction.
- a coaxial arrangement of the switching pieces of the first and the second switching point and a rotationally symmetrical configuration creates a dielectrically favorable designed body.
- the two switching points should each cylinder-like configurations aufwei ⁇ sen, the interengaging are arranged nested.
- a further advantageous embodiment may provide that, in a projection range of an interrupter being scarf ⁇ ended second switching point is spanned by a delimiting the evacuated space encapsulation.
- the encapsulation In the use of relatively movable switching pieces arises in the off state of the respective switching contact between the involved switching pieces a breaker gap, which serves the potential separation between the switching pieces.
- the enclosing the evacuated enclosure encapsulation must be at least partially formed of an electrically insulating material to keep the switching pieces of the first switching point isolated from each other. As a result, secondary current paths are avoided, which could adversely affect the switching capacity of the switching point.
- the encapsulation In a projection, for example radially to the axis on which the switching pieces of the first switching point are arranged and to which, for example, the switching pieces of the second switching point are arranged coaxially, the encapsulation can span the isolation of the second switching point. This makes it possible to carry out an inspection of the encapsulation through the opened second switching point. In a rotationally symmetrical configuration, this is possible from many positions, so that a quick inspection can take place.
- the electrical switching device has a substantially rotationally symmetrical housing with a first housing section and a second housing Housing portion which are spaced apart leaving a gap.
- rotationally symmetrical housing sections supports the dielectric strength of the electrical
- Switching device Due to the electrical insulation, it is mög ⁇ Lich, to urge the two housing portions with different electrical potentials, without creating short circuits or the like.
- the gap is spanned by at least one electrically insulated retaining element, which connects the first and the second Genzouseab ⁇ section .
- electrically insulated retaining elements can be used.
- the holding element can be is madestal ⁇ tet, for example, plate-shaped.
- Several of these holding elements can be arranged distributed on the circumference of the two housing sections. It is per ⁇ but also possible to manufacture the retaining element for example, an insulating tube and this tube fully connect with the housing sections to. This creates a rigid connection between the individual housing sections.
- an inspection of the encapsulation of the evacuated space can continue to take place through the intermediate spaces between the individual holding elements.
- this can be made of a translucent material, for example, ge ⁇ .
- a further advantageous embodiment provides that the gap is an annular gap.
- the annular shape avoids sharp edges.
- the housing sections are formed dielectrically low. Wei ⁇ terhin, the gap can be used to hold, for example, a switching piece of a switching point.
- a further advantageous embodiment may provide that the gap is electrically bridged by means of a movable contact piece of the second switching point.
- the use of the gap as the interruption distance of an electrical switching point allows an improved utilization of the available installation space on the electrical switching device.
- An advantageous embodiment may further provide that the evacuated space is surrounded by an electrically insulating fluid.
- An electrically insulating fluid may, for example, be an electron-negative gas, such as sulfur hexafluoride, nitrogen or mixtures of such gases.
- a suitable insulating oil is used to surround the evacuated space.
- the electrically insulating fluid may be, for example atmo ⁇ spherical air.
- the housing sections may be part of a current path, which is switchable by the switching device.
- the housing sections have a corresponding wall thickness.
- suitable electrically conductive materials such as aluminum or copper, allows a low-loss conduction of an e- lectric current also on the housing sections.
- a further advantageous embodiment can provide that the annular gap surrounds the evacuated space.
- Another embodiment can provide advantageous that at least one of the housing portions surrounding a Getriebeeinrich ⁇ tung which drives provide the moving contacts of the switching ⁇ .
- a transmission device can be used, for example, to distribute a drive movement to the movable contact pieces and to force a time offset between the movements of the contact pieces of the two switching points. Due to the arrangement within at least one Georesu ⁇ seabiteses, the gear means by the housing sections are protected against external mechanical forces. Furthermore, the housing sections can accommodate the transmission device within a field-free space. As a result, the formation of parallel current paths is prevented at the transmission device, whereby, for example, smaller discharges could occur.
- Figure 1 shows a section through an electrical switching device in an off position
- FIG 3 shows a section through an encapsulation of a first switching point.
- FIG. 1 shows an electrical switching device 1.
- the electrical switching device 1 has a first switching point 2 and a second switching point 3.
- the first switching point 2 is designed as a vacuum interrupter, which has an evacuated space in its interior.
- the structure of the first switching point 2 is shown in the figure 3 and described in more detail in the associated descrip tion ⁇ part.
- the first switching point 2 has a rotationally symmetrical structure and is coaxial with along a first axis 4 this arranged.
- the second switching point 3 surrounds the first switching point 2.
- the second switching point 3 is rotationally symmetrical ⁇ designed and arranged coaxially to the first axis 4 ⁇ .
- the second switching point 3 has a first switching piece 5 and a second switching piece 6.
- Switching piece 6 is movable by means of a drive along the first axis 4.
- the first switching piece 5 of the second switching point 3 is mounted stationary.
- the switching pieces 5, 6 of the second switching point 3 are designed as a hollow cylinder and each arranged coaxially with the first axis 4.
- the first contact piece 5 has a plurality of movable contact elements.
- the second contact piece 6 is retractable with an outer jacket region, so that an electrical contact between the first contact piece 5 and the second contact piece 6 of the second switching point 3 can be made.
- the first contact piece 5 is mounted on a first housing section 7.
- the second contact piece 6 is mounted on a second housing section 8.
- the housing sections 7, 8 are each configured substantially rotationally symmetrical and arranged coaxially with the first axis 4. Between the axially opposite ends of the two housing sections 7, 8 an annular gap 9 is formed.
- the annular gap 9 serves the second switching point 3 as a breaker distance.
- the two housing sections 7, 8 are joined together by a plurality of electrically insulating support members 10,. 11
- the holding elements 10, 11 are arranged uniformly distributed on the circumference of the two housing sections 7, 8.
- the annular gap 9 is covered by an encapsulation 23 which delimits the evacuated space of the first switching point 2.
- ⁇ nen zones between the individual holding elements 10, 11 is a visual inspection of the outer wall of the encapsulation 23 of the first switching point 2 possible.
- the two switching points 2, 3 are electrically connected in parallel to each other.
- a gear ⁇ device 12 is arranged within the second housing section 8.
- the transmission device 12 has a drive lever 13 for transmitting a drive movement, via which an on or off movement is initiated.
- output levers for the movable contact pieces 6, 21 of the first and the second switching point 2, 3 are provided.
- the transmission device 12 is designed such that a time offset between the onset and the suspension of the movement of the movable contact pieces 6, 21 is generated. For example, it may be provided that during a switch-on operation first the movable switching piece 21 of the first switching point 2 and subsequently the movable second switching piece 6 of the second switching point 3 are moved. In a switch-off can be provided accordingly that first the movable second contact piece 6 of the second switching point 3 is moved, and temporally following a movement of the movable contact piece 21 of the first switching point 2 takes place.
- connection pieces 14, 15 are arranged, which serve to connect an electrical supply line. Via the connection pieces 14, 15 which are Georesu ⁇ seabête 7, 8 as part of a current path to be switched in an electrical power transmission system insertion bar.
- the first switching piece 5 of the second switching point 3 is electrically conductively connected to the first housing portion 7 via a rigid connection.
- the second switching piece 6 of the second switching point 3 is electrically conductive via a corresponding Gleitkon ⁇ clock arrangement with the second Gescouseab- cut 8 connected.
- the second switching piece 6 of the second switching point 3 is for this purpose telescopically within a cylind ⁇ cal section of the second housing section 8 verfahr ⁇ bar.
- fe ⁇ - reducing contact fingers, worm springs or the like may be arranged as contact elements.
- the electrical switching device 1 may be surrounded by an electrically iso ⁇ lierenden fluid, for example an insulating liquid or an insulating gas. This can be done, for example, under a relation to the rest of the environment increased pressure. Through appropriate openings, the insulating medium can also flow into the interior of the electrical switching device and there surround the first switching point 2.
- an electrically iso ⁇ lierenden fluid for example an insulating liquid or an insulating gas. This can be done, for example, under a relation to the rest of the environment increased pressure.
- the insulating medium can also flow into the interior of the electrical switching device and there surround the first switching point 2.
- the position of the second contact piece 6 of the first switching point 2 is shown in its ON position.
- the annular gap 9 is now bridged by the hollow cylindrical second switching piece 6.
- the two housing sections 7, 8 are electrically contacted with each other. Now, the housing sections 7, 8 part of a through current path.
- a galvanic connection is also produced in the interior of the encapsulation 23 of the first switching point 2 between the switching pieces there. Due to the temporally successive circuits of the first and the second switching point 2, 3 described above, the first switching point 2 acts as a power switching point and the second switching point 3 as a separation point, since this is usually switched off in the current ⁇ case.
- the structure of the first switching point 2 will be explained in more detail below with reference to the section shown in FIG.
- the first switching point 2 has a first contact piece 20 as ⁇ a second contact piece 21.
- the first contact piece 20 is mounted stationary.
- the second switching piece 21 is movably mounted and drivable via the transmission device 12.
- the contact pieces 20, 21 of the first switching point 2 are arranged axially ge ⁇ genüberod and along the first axis 4 rela tively ⁇ movable to each other.
- the first contact piece 20 of the first switching point 2 is electrically connected via its bearing on the first housing ⁇ section 7 with the first switching piece 5 of the second switching point 3.
- the first contact members 5, 20 as well as the second contact pieces 6, 21 have each characterized ⁇ wells the same electrical potential.
- the switching pieces 20, 21 of the first switching point 2 are surrounded by an encapsulation 23.
- the enclosure 23 has an evacuated space in its interior. This evacuated space is also called a vacuum.
- the encapsulation 23 has a first and a second tubular insulating piece 24, 25, wherein the tubular insulating pieces 24, 25 are arranged coaxially with the first axis 4.
- the two tubular insulators 23, 24 are connected to the facing ends by a metallic central body 26 together ⁇ ver.
- the interrup ⁇ is cherrange the first switching point 2 is arranged.
- an electrode 27 disposed in the interior of the enclosure 23.
- the switching pieces 20, 21 of the first switching ⁇ point 2 gas-tight through a wall portion hin penge- passes.
- the encapsulation 23 may be surrounded by a shock-absorbing cladding.
Landscapes
- Gas-Insulated Switchgears (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Patch Boards (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005032709A DE102005032709A1 (en) | 2005-07-07 | 2005-07-07 | Electrical switching device and method for operating an electrical switching device |
PCT/EP2006/063844 WO2007006686A1 (en) | 2005-07-07 | 2006-07-04 | Electrical switchgear and method for operating an electrical switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1899999A1 true EP1899999A1 (en) | 2008-03-19 |
EP1899999B1 EP1899999B1 (en) | 2011-06-15 |
Family
ID=36869897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06764046A Not-in-force EP1899999B1 (en) | 2005-07-07 | 2006-07-04 | Electrical switchgear |
Country Status (9)
Country | Link |
---|---|
US (1) | US20080197008A1 (en) |
EP (1) | EP1899999B1 (en) |
JP (1) | JP2008545228A (en) |
CN (1) | CN101233593A (en) |
AT (1) | ATE513303T1 (en) |
DE (1) | DE102005032709A1 (en) |
ES (1) | ES2364076T3 (en) |
RU (1) | RU2008104641A (en) |
WO (1) | WO2007006686A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006023372A1 (en) * | 2006-05-16 | 2007-11-22 | Siemens Ag | breakers |
DE102011083594A1 (en) * | 2011-09-28 | 2013-03-28 | Siemens Aktiengesellschaft | Circuit-breaker interrupter unit |
DE102012005357A1 (en) * | 2012-03-16 | 2013-09-19 | Schneider Electric Industries Sas | Direct-current switch device for use in electric line of direct-current network to switch-off load currents if necessary, has PTC resistor enabling current flow in cold operating mode and interrupting current flow in heated operating state |
DE102012005358A1 (en) * | 2012-03-16 | 2013-09-19 | Schneider Electric Industries Sas | Direct current switching device has control device which is switched off by contact elements to approach switching contacts with small arc resistor and high arc resistor respectively |
FR2995131A1 (en) * | 2012-12-12 | 2014-03-07 | Alstom Technology Ltd | Circuit breaker for medium and high voltages at output of generator, has arcing contacts housed in bulb with sulfur hexafluoride, and permanent contacts housed in main chamber containing insulating gas under pressure |
DE102013225112B4 (en) | 2013-12-06 | 2021-06-02 | Siemens Aktiengesellschaft | Electrical switchgear |
US10242825B1 (en) * | 2014-09-16 | 2019-03-26 | Cleaveland/Price Inc. | High voltage switch vacuum interrupter |
CN104701064B (en) * | 2015-03-26 | 2015-12-09 | 江苏现代电力科技股份有限公司 | AC vacuum switchgear is pressed in intelligent integrated based on flexible divide-shut brake technology |
DE102016213158A1 (en) * | 2016-07-19 | 2018-01-25 | Siemens Aktiengesellschaft | Switchgear arrangement |
DE102016215699A1 (en) * | 2016-08-22 | 2018-02-22 | Siemens Aktiengesellschaft | Device and method for switching medium and / or high voltages with specific drive characteristics |
DE102018201151A1 (en) * | 2018-01-25 | 2019-07-25 | Siemens Aktiengesellschaft | Electrical switching device |
CN109637882A (en) * | 2018-10-25 | 2019-04-16 | 国网宁夏电力有限公司电力科学研究院 | Vacuum circuit breaker |
FR3089342B1 (en) | 2018-12-04 | 2021-09-17 | Schneider Electric Ind Sas | Actuation system for a vacuum interrupter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3261954A (en) * | 1965-01-11 | 1966-07-19 | Joslyn Mfg & Supply Co | Current interruption and separation electrode structure for vacuum switching apparatu |
GB1126362A (en) * | 1965-07-06 | 1968-09-05 | Ass Elect Ind | Improvements in and relating to electric circuit breakers |
US4188514A (en) * | 1978-11-01 | 1980-02-12 | Westinghouse Electric Corp. | Telescoping disconnect switch with gasketed covered access port |
JPS58181218A (en) * | 1982-04-19 | 1983-10-22 | 株式会社日立製作所 | Composite vacuum breaker |
DE3705719A1 (en) * | 1987-02-23 | 1988-09-01 | Bbc Brown Boveri & Cie | Heavy-current switch |
DE4405206A1 (en) * | 1994-02-18 | 1995-08-24 | Abb Research Ltd | Switching device |
FR2763171B1 (en) | 1997-05-07 | 1999-07-09 | Gec Alsthom T & D Sa | CIRCUIT BREAKER |
FR2763422B1 (en) | 1997-05-15 | 1999-07-09 | Gec Alsthom T & D Sa | GENERATOR CIRCUIT BREAKER |
-
2005
- 2005-07-07 DE DE102005032709A patent/DE102005032709A1/en not_active Withdrawn
-
2006
- 2006-07-04 EP EP06764046A patent/EP1899999B1/en not_active Not-in-force
- 2006-07-04 JP JP2008518867A patent/JP2008545228A/en not_active Abandoned
- 2006-07-04 US US11/994,708 patent/US20080197008A1/en not_active Abandoned
- 2006-07-04 AT AT06764046T patent/ATE513303T1/en active
- 2006-07-04 RU RU2008104641/09A patent/RU2008104641A/en not_active Application Discontinuation
- 2006-07-04 CN CNA2006800246518A patent/CN101233593A/en active Pending
- 2006-07-04 ES ES06764046T patent/ES2364076T3/en active Active
- 2006-07-04 WO PCT/EP2006/063844 patent/WO2007006686A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007006686A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101233593A (en) | 2008-07-30 |
RU2008104641A (en) | 2009-08-20 |
EP1899999B1 (en) | 2011-06-15 |
DE102005032709A1 (en) | 2007-01-11 |
WO2007006686A1 (en) | 2007-01-18 |
ATE513303T1 (en) | 2011-07-15 |
US20080197008A1 (en) | 2008-08-21 |
JP2008545228A (en) | 2008-12-11 |
ES2364076T3 (en) | 2011-08-24 |
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