EP3032561A1 - Elektrische Schalteranordnung - Google Patents
Elektrische Schalteranordnung Download PDFInfo
- Publication number
- EP3032561A1 EP3032561A1 EP14290372.3A EP14290372A EP3032561A1 EP 3032561 A1 EP3032561 A1 EP 3032561A1 EP 14290372 A EP14290372 A EP 14290372A EP 3032561 A1 EP3032561 A1 EP 3032561A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- enclosure
- valve
- opening
- pressure
- switch section
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000010891 electric arc Methods 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
- H01H33/70—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
-
- 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
- H01H2033/902—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 with the gases from hot space and compression volume following different paths to arc space or nozzle, i.e. the compressed gases do not pass through hot volume
-
- 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
- H01H2033/908—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 using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume
-
- 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
Definitions
- the present invention relates to an electrical switch arrangement according to the preamble of claim 1.
- Such electrical switch arrangements are also known as circuit breakers in the non-restrictive field of high voltage. Principally, the breaking of an alternating current by such a high voltage circuit breaker is obtained by separating electrical contact elements ideally disposed in a metal casing comprising a gas (SF6 or gas mixture) or in an insulating medium such as vacuum. .
- Such electrical contact elements may also be arranged not in a metal casing (it is then a circuit breaker of Metal Under-Covered Substation or PSEM, in English “Gas-Insulated Switchgear or GIS", or “dead- tank "), but in an insulating envelope (it is then an AIS circuit breaker, in English” Air-Insulated Switchgear ", which despite this denomination may contain SF6, the air insulation being a means of external insulation of the insulating envelope.
- the current When the circuit breaker opens in a circuit carrying a current, the current continues to circulate in the form of an electric arc which is generated between and after separation of the contacts of the circuit breaker.
- the current In a gas blow-off circuit breaker, the current is cut off if the blowing is intense enough to cool the arc and turn it off. This cutoff is generally carried out at zero crossing of the current, because it is at this moment that the energy supplied by the network is minimal.
- this power failure arrangement is, when the switch is opened, to effectively "blow" the electric arc, by means of a suitable pressure balance as well as a temperature distribution between the cooling channel and the enclosure up to the switch section.
- the break is successful if the voltage that recovers between the contact elements or electrodes after the interruption of the current is at any time greater than a so-called transient recovery voltage (TTR) imposed by a targeted power grid.
- TTR transient recovery voltage
- a reboot or even in a few cases a reignition In particular, such a thermal reboot occurs very briefly during the first microseconds after the power failure. More details on the physical cut-off criteria can be obtained on the internet, for example under the link www.wikipedia.org from where some of this general information has been drawn.
- the object of the invention is here to provide an electrical switch arrangement allowing increased cutoff capacity to prevent a reboot, particularly by a better control of the pressure balance and the distribution of the aforementioned temperatures.
- the invention thus proposes a solution for these purposes in the form of an electrical switch arrangement according to claim 1.
- Figure 1 has a longitudinal section of an electrical switch arrangement (or circuit breaker) with an internal arc phase element as soon as the circuit breaker break has been initiated.
- the pressure output (SP) of the electrical switch section terminates in a first lateral opening of the enclosure and the valve is disposed on a second opening of the enclosure, namely ideally an opening laterally opposed to the first opening.
- This configuration is however not exclusive or essential to the invention.
- Said inner wall of the enclosure (EN) with the outer shell of the conductor (CL) forms a passageway below said wall for a first flow (FC1) of hot gas to the internal volume (VI) ( in the right part) of the enclosure, said internal volume thus becoming a volume of gas mainly hot, because a rise in temperature due to the heating of the electric arc causes a sharp increase in pressure vis-à-vis the valve thus preventing a complete opening of said valve (V1) to allow cooling of hot gas flows (FC1, FC2) accumulating in the chamber. Even if the valve (V1) opens slightly, it therefore allows a minority flow of cold gas (FF2) in the hot volume (VC) from the flow (FF1) from the cooling channel (CR).
- Figure 2 has a longitudinal section of the same arrangement of electrical switch with an inner wall element according to the state of the art that figure 1 but at the end of blowing the electric arc.
- This state of the arrangement thus reflects the end of cut for which the valve (V1) is at least almost completely open on the chamber, knowing that the pressure in the limited volume (VI) has decreased and forms a cooled volume (VD ) by cold gas flows (FF1, FF2, FF3, FF4) from the cooling channel (CR) via the internal volume (VI) to the arc zone (1).
- An emerging stream of hot gas (FC2) emanating from the arc zone (1) is a minority.
- the flow of return gas (FF3, FF4) and useful to the complete blowing of the arc that is to say forming from above then passing on an opening to the left of the left part of the wall internally (SP1) to end in the electric arc zone, will be mostly cold.
- valve between the enclosure and the cooling channel does not have a sufficiently controlled opening dynamics and sufficiently high at the start and a short cut-off time, so that also a dynamic and a distribution cooling flow in the enclosure are not optimal and therefore the risks of reintroduction are still present.
- Figure 3 has a longitudinal section of an electrical switch arrangement according to the invention with internal wall in the electric arc phase. Analogously to the figure 1 , the arrangement is in a state of cutoff start, that is to say that the electric arc (SI) is formed and must be blown down minimizing a risk of rebooting.
- SI electric arc
- Said pressure shield means being permanent, ideally by an internal wall in the form of at least one permanent physical screen of the valve with regard to an arrival of gas flow leaving the pressure outlet (SP), the valve ( V1) can thus very advantageously open (see dotted position) and thus allow a passage of cold gas in the internal volume (VI) of the enclosure (EN) immediately at the beginning of the cut-off phase, in contrast to the closed and blocked valve state according to the figure 1 . Blow conditions in the arc zone in terms of temperature (down) and defined pressure can therefore be achieved faster and more efficiently.
- the pressure output (SP) of the electrical switch section terminates in a first lateral opening of the enclosure and the valve is disposed on a second opening of the enclosure, namely ideally an opening laterally opposed to the first opening.
- SP pressure output
- the arrangement can simply provide that the inner wall mainly separates the enclosure into two lower and upper cavities (CI, CS) being coaxial with the axis of the electrical switch section.
- the arrangement being mainly of cylindrical shape, the realization of the inner wall and its insertion into the enclosure is greatly simplified, as a subchamber of said enclosure.
- the lower cavity is a hot gas receiver pressure tank delivered to the outlet (SP) of the electrical switch section and the upper cavity forms a cold gas receiver cooling pipe from the valve in the open position.
- SP hot gas receiver pressure tank delivered to the outlet (SP) of the electrical switch section
- the upper cavity forms a cold gas receiver cooling pipe from the valve in the open position.
- the inner wall (PI) forms a closed surface around the elongate conductor (CL) and comprises a single opening coupled in the area of the pressure outlet (SP), said opening thus forming a cold gas inlet to the arc zone.
- Figure 4 has a longitudinal section of the same electrical switch arrangement according to the invention that figure 3 but at the end of blowing the electric arc.
- This state of the arrangement thus reflects the end of cut for which the valve (V1) is completely open on a guided channel (FF1, FF5, FF6, FF7, FF8, FF9) of cold gas flow previously already predominantly established since the phase according to figure 3 knowing that the valve (V1) of the figure 3 could open earlier than at the figure 1 .
- the inner wall (PI) forms a closed surface around the elongate conductor (CL) and comprises a single opening (see reference CL1) coupled in the area of the pressure outlet (SP), said opening thus forming a cold gas inlet to the arc zone.
- the inner wall may also comprise other openings, said openings each comprising at least one non-return valve (CL1, CL2, CL3) opening in case of overpressure of the channel of cooling with respect to the limited hot gas holding space and the pressure outlet (SP).
- CL1, CL2, CL3 non-return valve
Landscapes
- Circuit Breakers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14290372.3A EP3032561B1 (de) | 2014-12-08 | 2014-12-08 | Elektrische Schalteranordnung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14290372.3A EP3032561B1 (de) | 2014-12-08 | 2014-12-08 | Elektrische Schalteranordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3032561A1 true EP3032561A1 (de) | 2016-06-15 |
EP3032561B1 EP3032561B1 (de) | 2017-08-30 |
Family
ID=52134076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14290372.3A Not-in-force EP3032561B1 (de) | 2014-12-08 | 2014-12-08 | Elektrische Schalteranordnung |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP3032561B1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112002605A (zh) * | 2020-08-25 | 2020-11-27 | 西安西电开关电气有限公司 | 一种开关设备及其灭弧室 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374384A2 (de) * | 1988-12-23 | 1990-06-27 | Licentia Patent-Verwaltungs-GmbH | SF6-Eindruckschalter |
EP0664551A2 (de) * | 1994-01-21 | 1995-07-26 | Siemens Aktiengesellschaft | Elektrischer Hochspannungs-Leistungsschalter mit einem Heizraum und einer Kompressionsvorrichtung |
DE29520809U1 (de) * | 1995-12-19 | 1996-02-15 | Siemens AG, 80333 München | Hochspannungs-Leistungsschalter mit einem Gasspeicherraum |
JP2014225467A (ja) * | 2014-07-25 | 2014-12-04 | 株式会社東芝 | ガス遮断器 |
-
2014
- 2014-12-08 EP EP14290372.3A patent/EP3032561B1/de not_active Not-in-force
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374384A2 (de) * | 1988-12-23 | 1990-06-27 | Licentia Patent-Verwaltungs-GmbH | SF6-Eindruckschalter |
EP0664551A2 (de) * | 1994-01-21 | 1995-07-26 | Siemens Aktiengesellschaft | Elektrischer Hochspannungs-Leistungsschalter mit einem Heizraum und einer Kompressionsvorrichtung |
DE29520809U1 (de) * | 1995-12-19 | 1996-02-15 | Siemens AG, 80333 München | Hochspannungs-Leistungsschalter mit einem Gasspeicherraum |
JP2014225467A (ja) * | 2014-07-25 | 2014-12-04 | 株式会社東芝 | ガス遮断器 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112002605A (zh) * | 2020-08-25 | 2020-11-27 | 西安西电开关电气有限公司 | 一种开关设备及其灭弧室 |
WO2022041829A1 (zh) * | 2020-08-25 | 2022-03-03 | 西安西电开关电气有限公司 | 一种开关设备及其灭弧室 |
Also Published As
Publication number | Publication date |
---|---|
EP3032561B1 (de) | 2017-08-30 |
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