EP3803931A1 - Gasisolierter schalter - Google Patents
Gasisolierter schalterInfo
- Publication number
- EP3803931A1 EP3803931A1 EP19745978.7A EP19745978A EP3803931A1 EP 3803931 A1 EP3803931 A1 EP 3803931A1 EP 19745978 A EP19745978 A EP 19745978A EP 3803931 A1 EP3803931 A1 EP 3803931A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- gas
- insulated switch
- contact unit
- stamp
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 241000722921 Tulipa gesneriana Species 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 10
- 239000011810 insulating material Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/905—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the compression volume being formed by a movable cylinder and a semi-mobile piston
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
- H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions
Definitions
- the invention relates to a gas-insulated switch according to claim 1 and a high-voltage switching arrangement according to claim
- circuit breaker in particular in the form of a gas-insulated switch, which can be opened under an electrical load, that is to say in particular in the event of a short circuit, and relieves the vacuum interrupter dielectrically.
- the object of the invention is to provide a disconnector in the form of a gas-insulated switch which has a higher opening speed of the contacts in the event of a short circuit compared to conventional gas-insulated switches. Furthermore, the object is to provide a high-voltage switching arrangement with a vacuum interrupter, which can carry a higher voltage per construction space compared to the prior art.
- the solution to the problem consists in a gas-insulated scarf ter according to claim 1 and in a high-voltage scarf teranssen according to claim 9.
- the gas-insulated switch according to claim 1 has a first contact and a second contact, which are each part of a contact unit. At least one contact unit is connected to the first contact as a moving contact unit with a drive unit. The moving contact unit is movably mounted along a switching axis. Furthermore, the gas-insulated switch comprises a multi-part insulating material nozzle system which has a main nozzle and an auxiliary nozzle, a heating channel being formed between the main nozzle and the auxiliary nozzle, which starts from an arc chamber and which opens into a gas reservoir. This gas reservoir is limited on one side by a stamp.
- the invention is characterized in that the gas reservoir is at least partially delimited radially with respect to the switching axis by a wall, the moving contact unit being movably mounted with respect to this wall along the switching axis and in that the stamp is part of the moving contact unit and thereby together with it is movably mounted in relation to the second contact such that the stamp moves away from the second contact along the switching axis during the opening process of the two contact units in order to enlarge the gas reservoir.
- the construction of the gas-insulated switch of the invention resembles a so-called auto-blow switch, but it differs in that the conventional auto-blow switch has a self-blowing volume that is reduced in volume when a contact is opened by a plunger so that an extinguishing gas is generated the heating duct is pressed back into the arc space and thereby extinguishes the arc.
- the wall which limits the self-blowing volume ra dial is part of the moving contact system and remains open when the switch is opened with respect to the self-blowing lumens or the gas reservoir unmoved.
- the wall is movably mounted with respect to the first contact unit and is therefore not part of this first contact unit.
- the gas reservoir that enlarges during the opening process moves along the wall of the reservoir described.
- the insulating material nozzle system is a functionally interacting system in which the individual components can each be part of the contact units. This means that the components such as the main nozzle and the auxiliary nozzle do not have to be arranged rigidly to one another, but can move towards and away from each other during the opening and closing processes.
- the wall that at least partially delimits the gas reservoir is an integral part of the contact unit of the second contact.
- the said wall is expediently constructively attached to the second contact system with little effort.
- a fastening of the wall to the housing of the vacuum interrupter can also be expedient.
- the plunger is arranged in the first contact system in such a way that it is configured substantially perpendicularly with respect to a switching axis. This essentially means that an angled position with respect to the switching axis does not exceed 15 °.
- the stamp is rotationally symmetrical with respect to the switching axis. This leads to a rotationally symmetrical gas cylinder-shaped reservoir around the switching contact.
- the stamp is attached in a before geous embodiment to a bracket of the auxiliary nozzle, and thus fixed to the moving contact system a related party.
- the two contacts In a gas-insulated switch after the construction of the self-blowing principle, the two contacts have different shapes, it is a tulip contact, which is preferably the first contact, and a pin contact, which is preferably designed as a second contact.
- the pin contact is preferably part of a fixed contact unit.
- the tulip contact is preferably part of the moving contact unit, it being possible in principle for both contact units to be movable via a corresponding coupled drive.
- the wall of the gas reservoir described is part of the main nozzle.
- Another embodiment of the invention is a high-voltage switching arrangement according to claim 9, which comprises a gas-insulated switch according to one of claims 1 to 8 and a vacuum interrupter.
- the gas-insulated switch and the vacuum interrupter which in turn can be part of a circuit breaker, are connected in series. Because the gas-insulated switch described can be switched under load, the vacuum interrupter connected in series or in series manages with a lower electrical strength with respect to the rated voltage. This requires less technical effort in the construction of the vacuum interrupter and it is fundamentally possible to achieve higher rated voltages by means of a specified design.
- the gas-insulated switch and the vacuum interrupter or a circuit breaker in which the vacuum interrupter is integrated may be expedient for the gas-insulated switch and the vacuum interrupter or a circuit breaker in which the vacuum interrupter is integrated to be operated by a common drive. This enables a simple technical structure and, on the other hand, a safe chronological sequence of the switching operations.
- the high-voltage switching arrangement is designed in such a way that the voltage distribution via the gas-insulated switch and the vacuum interrupter is controlled by a control device.
- a control device can for example be a capacitor or a resistor or a coupling of a capacitor and a resistor.
- FIG. 1 shows a cross section through a gas-insulated switch with a moving contact unit and a fixed contact unit and with a gas reservoir
- FIG. 2 shows a gas-insulated switch analogous to FIG. 1 with an additional arc extinguishing volume
- FIG. 3 shows a gas-insulated switch analogous to FIG. 1, with an arc quenching volume in the main insulating material nozzle and
- Figure 4 shows a series connection of the gas-insulated switch described with a vacuum interrupter and control devices connected in parallel therewith.
- FIG. 1 shows a cross section through a gas-insulated switch which has a first contact 4 which is designed in the form of a tulip contact 30 and which has a second contact 6 which is designed in the form of a pin contact 32.
- Both contacts 30, 32 are each integrated in a contact unit 8, 9, a first contact unit 8 and a second contact unit 9.
- the two contacts 30 and 32 are translationally movable along a switching axis 10 during an opening or closing process of the gas-insulated switch 2 stored together.
- the pin contact 32 is generally not designed as a fixed contact, however, the tulip contact 30 is designed as a moving contact.
- the first contact unit 8 with the tulip contact 30 can also be referred to as a way contact unit.
- the gas-insulated switch 2 has an insulating material nozzle system 12, which in particular comprises a main nozzle 14 and an auxiliary nozzle 16 and a heating duct 18 formed thereby.
- the heating duct 18 leads from an arc space 20 to a gas reservoir 22.
- the arc space 20 is the space which forms when contacts 30, 32 open and in which a switching arc 21 occurs during the opening process.
- the gas reservoir 22 is delimited on the one hand on a radial inside in this embodiment by the auxiliary nozzle 16 and radially on the outside by the switching axis 10 by a wall 26. These two limits through the auxiliary nozzle 16 and the wall 26 extend radially umlau fend, but parallel to the switching axis 10. Furthermore, a stem 24 is provided which axially limits the gas reservoir 22.
- the stamp 24 is essentially perpendicular, but rotationally symmetrical to the switching axis 10 and the stamp 24 is at least movable with respect to the wall 26.
- the stamp 24 is an integral part of the moving contact unit 8
- the wall 26 is not part of the moving contact unit 8.
- the wall 26 can be part of the second contact unit 9, it can be designed as an extension of the main insulating material nozzle 14.
- the wall 26 can also be mechanically decoupled from the fixed contact unit 9 and, for example, be arranged on the (not shown) housing of the switch 2.
- the switch 2 opens, the tulip contact 30 and the pin contact 32 move apart along the switching axis 10, driven by a drive device, which is not shown here.
- a switching arc 21 is created.
- the switching medium 21 heats the insulating medium present in the arc space, which is essentially gaseous, and presses it into the gas reservoir 22 via the heating channel 18.
- the movement of the gas along the heating channel 18 takes place in particular through the temperature increase and the volume expansion resulting therefrom.
- This volume expansion in turn means that the insulating medium 23 is pressed against the plunger 24 with such high energy that the translational movement of the first contact unit 8, which in the Essentially includes the tulip contact 30, the auxiliary nozzle 16 and the stamp 24, so quickly that the speed of the movement caused by the drive is exceeded. It is therefore an additional acceleration of the moving contact unit 8 away from the fixed contact 32. As a result, the gas reservoir 22 is enlarged and the plunger 24 moves in the direction of the arrow 25.
- the energy of the arc 21 is thus used to accelerate the opening of the switch 2 and thus also to increase the separation distance between the two contacts 30, 32. In this way, the arc 21 is also extinguished. This can be particularly relevant if the switch 2 is connected in series with a vacuum interrupter 48, as shown in FIG. 4. This series connection will be discussed further below.
- a self-blowing volume known as an auto-blowing switch for extinguishing the switching arc 21 is dispensed with.
- Arc energy is thus used for the accelerated opening of the contact units 8, 9.
- the energy present by the arc is divided up and, on the one hand, is used for the accelerated opening of the switch 2 or the contact units 8 and 9, and another part of the arc energy is directed into an arc extinguishing volume 34 analogously to the auto-blow switch, similar to the known self-blowing switch, a compression volume 38 is also present here, which opens at a specific counterpressure and increases the pressure in the arc extinguishing volume 34, so that a return flow of the heated insulating medium 23 takes place through a branched heating channel 18 'into the arc space 20 and a Quenching the switching arc 21 occurs. This is shown in FIG.
- the device according to FIG. 1 also aligns a second one radially with respect to the switching axis 10 Wall 36 which is part of the second contact unit 9 and which in turn surrounds the gas reservoir 22 and the first contact unit 18 at least partially radially.
- the speed of the opening movement is increased with the same drive energy and, in parallel, a further part of the energy of the switching arc 21 is used for arc quenching.
- FIG. 3 shows an alternative embodiment of the prior illustration according to FIG. 2, in which the switch 2 according to FIG. 1 is used again, but this is designed in such a way that the arc extinguishing volume 34 is fitted in the main nozzle 14, where the flow control is optionally ensured by a hot gas channel 44 and a cold gas channel 42 and a corre sponding arrangement of flow control elements 40.
- a compression volume 38 can also be provided, via which the insulating medium 23 can additionally be pressed into the arc extinguishing volume 34 through a compression channel 46.
- FIG. 4 shows a circuit breaker 52 which comprises a gas-insulated switch 2 and a vacuum interrupter 48.
- Parts of the circuit breaker 52 are one or two control devices 50 which are connected in parallel to the respective switching units, the gas-insulated switch 2 and the vacuum interrupter 48.
- the control device 50 is, for example, a serial or parallel circuit of a capacitor with a resistor or only a resistor.
- This arrangement has the effect that, for example, a vacuum interrupter 48, which is designed for a rated voltage level of 145 kV or 245 kV, in conjunction with the gas-insulated switch 2 which can be switched under load, also an isolating switch in several hundred kilovolt higher rated levels than the nominally provided voltage levels can be used. In this way the technical effort for producing the vacuum interrupter tube 48 is significantly reduced, which leads to smaller installation spaces and lower manufacturing costs. An important prerequisite for achieving this is the described gas-insulated switch 2, which uses the technology of a conventional one
- Auto blow switch is based, but is modified compared to this in such a way that it can be opened under load, especially in the event of a short circuit, and rapid dielectric re-consolidation takes place.
Landscapes
- Circuit Breakers (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018211621.0A DE102018211621A1 (de) | 2018-07-12 | 2018-07-12 | Gasisolierter Schalter |
PCT/EP2019/068211 WO2020011695A1 (de) | 2018-07-12 | 2019-07-08 | Gasisolierter schalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3803931A1 true EP3803931A1 (de) | 2021-04-14 |
EP3803931B1 EP3803931B1 (de) | 2022-06-29 |
Family
ID=67480148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19745978.7A Active EP3803931B1 (de) | 2018-07-12 | 2019-07-08 | Gasisolierter schalter |
Country Status (5)
Country | Link |
---|---|
US (1) | US11676785B2 (de) |
EP (1) | EP3803931B1 (de) |
CN (1) | CN112673445B (de) |
DE (1) | DE102018211621A1 (de) |
WO (1) | WO2020011695A1 (de) |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH607658A5 (en) * | 1976-10-26 | 1978-09-29 | Sprecher & Schuh Ag | Gas-blast circuit breaker |
EP0019806B1 (de) * | 1979-05-25 | 1983-11-30 | Mitsubishi Denki Kabushiki Kaisha | Leistungsschalter mit Anordnung zur Lichtbogenlöschung |
JPS5736733A (de) * | 1980-08-14 | 1982-02-27 | Tokyo Shibaura Electric Co | |
DE3265381D1 (en) | 1981-06-12 | 1985-09-19 | Bbc Brown Boveri & Cie | High-voltage power circuit breaker |
JPS58207802A (ja) * | 1982-05-27 | 1983-12-03 | 株式会社東芝 | ハイブリツド形しや断器 |
JPH04284319A (ja) * | 1991-03-13 | 1992-10-08 | Hitachi Ltd | ガス遮断器 |
DE4420386C2 (de) * | 1994-05-31 | 1998-07-02 | Siemens Ag | Druckgas-Leistungsschalter mit einer Isolierstoffdüse |
ATE176082T1 (de) | 1995-05-04 | 1999-02-15 | Ansaldo Ind S P A | Hochspannungsschalter mit dielektrischem gas mit selbst-beblasung |
DE19536673A1 (de) | 1995-09-30 | 1997-04-03 | Asea Brown Boveri | Leistungsschalter |
DE29706202U1 (de) * | 1997-03-27 | 1997-06-05 | Siemens Ag | Druckgasleistungsschalter |
DE19809088C1 (de) * | 1998-02-25 | 1999-09-30 | Siemens Ag | Hochspannungsleistungsschalter mit einer Isolierstoffdüse |
DE19939940A1 (de) | 1999-08-23 | 2001-03-01 | Abb Research Ltd | Druckgasschalter |
FR2821482B1 (fr) * | 2001-02-27 | 2003-04-04 | Alstom | Disjoncteur incluant un canal de vidange de la chambre de compression par piston |
DE50309339D1 (de) * | 2003-12-22 | 2008-04-17 | Abb Technology Ag | Löschkammer und Hochleistungsschalter mit starker Lichtbogenbeblasung |
DE502006003878D1 (de) * | 2006-04-05 | 2009-07-16 | Abb Research Ltd | Schaltkammer eines Hochspannungsschalters mit einem Heizvolumen veränderbarer Grösse |
EP2325859B1 (de) * | 2009-11-24 | 2013-04-17 | ABB Technology AG | Gasisolierter Hochspannungsschalter |
DE102010020979A1 (de) * | 2010-05-12 | 2011-11-17 | Siemens Aktiengesellschaft | Druckgas-Leistungsschalter |
DE102011005905B4 (de) | 2011-03-22 | 2021-05-27 | Siemens Energy Global GmbH & Co. KG | Schalter für eine Übertragungsstrecke für Hochspannungs-Gleichstrom |
KR20150000664A (ko) * | 2013-06-25 | 2015-01-05 | 현대중공업 주식회사 | 가스차단기 |
-
2018
- 2018-07-12 DE DE102018211621.0A patent/DE102018211621A1/de active Pending
-
2019
- 2019-07-08 CN CN201980046413.4A patent/CN112673445B/zh active Active
- 2019-07-08 US US17/259,653 patent/US11676785B2/en active Active
- 2019-07-08 WO PCT/EP2019/068211 patent/WO2020011695A1/de unknown
- 2019-07-08 EP EP19745978.7A patent/EP3803931B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020011695A1 (de) | 2020-01-16 |
CN112673445B (zh) | 2024-04-05 |
CN112673445A (zh) | 2021-04-16 |
US11676785B2 (en) | 2023-06-13 |
EP3803931B1 (de) | 2022-06-29 |
US20210319966A1 (en) | 2021-10-14 |
DE102018211621A1 (de) | 2020-01-16 |
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