EP3504726A1 - Switch and method for disconnecting a switch - Google Patents
Switch and method for disconnecting a switchInfo
- Publication number
- EP3504726A1 EP3504726A1 EP17755157.9A EP17755157A EP3504726A1 EP 3504726 A1 EP3504726 A1 EP 3504726A1 EP 17755157 A EP17755157 A EP 17755157A EP 3504726 A1 EP3504726 A1 EP 3504726A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- commutation
- contact element
- switch
- closed
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 241000722921 Tulipa gesneriana Species 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 11
- IYRWEQXVUNLMAY-UHFFFAOYSA-N fluoroketone group Chemical group FC(=O)F IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 description 10
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 239000000126 substance Substances 0.000 description 6
- 229920001774 Perfluoroether Polymers 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 4
- JECYNCQXXKQDJN-UHFFFAOYSA-N 2-(2-methylhexan-2-yloxymethyl)oxirane Chemical compound CCCCC(C)(C)OCC1CO1 JECYNCQXXKQDJN-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- QAERDLQYXMEHEB-UHFFFAOYSA-N 1,1,3,3,3-pentafluoroprop-1-ene Chemical compound FC(F)=CC(F)(F)F QAERDLQYXMEHEB-UHFFFAOYSA-N 0.000 description 2
- BNYODXFAOQCIIO-UHFFFAOYSA-N 1,1,3,3-tetrafluoroprop-1-ene Chemical compound FC(F)C=C(F)F BNYODXFAOQCIIO-UHFFFAOYSA-N 0.000 description 2
- AASDJASZOZGYMM-UHFFFAOYSA-N 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile Chemical compound FC(F)(F)C(F)(C#N)C(F)(F)F AASDJASZOZGYMM-UHFFFAOYSA-N 0.000 description 2
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- DMUPYMORYHFFCT-OWOJBTEDSA-N (e)-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound F\C=C(\F)C(F)(F)F DMUPYMORYHFFCT-OWOJBTEDSA-N 0.000 description 1
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 description 1
- DMUPYMORYHFFCT-UPHRSURJSA-N (z)-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound F\C=C(/F)C(F)(F)F DMUPYMORYHFFCT-UPHRSURJSA-N 0.000 description 1
- GCDWNCOAODIANN-UHFFFAOYSA-N 1,1,1,2,2-pentafluoro-2-methoxyethane Chemical compound COC(F)(F)C(F)(F)F GCDWNCOAODIANN-UHFFFAOYSA-N 0.000 description 1
- NDMMKOCNFSTXRU-UHFFFAOYSA-N 1,1,2,3,3-pentafluoroprop-1-ene Chemical compound FC(F)C(F)=C(F)F NDMMKOCNFSTXRU-UHFFFAOYSA-N 0.000 description 1
- SFFUEHODRAXXIA-UHFFFAOYSA-N 2,2,2-trifluoroacetonitrile Chemical compound FC(F)(F)C#N SFFUEHODRAXXIA-UHFFFAOYSA-N 0.000 description 1
- MTLOQUGSPBVZEO-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanenitrile Chemical compound FC(F)(F)C(F)(F)C#N MTLOQUGSPBVZEO-UHFFFAOYSA-N 0.000 description 1
- BOZRBIJGLJJPRF-UHFFFAOYSA-N 2,2,3,3,4,4,4-heptafluorobutanenitrile Chemical compound FC(F)(F)C(F)(F)C(F)(F)C#N BOZRBIJGLJJPRF-UHFFFAOYSA-N 0.000 description 1
- LOUICXNAWQPGSU-UHFFFAOYSA-N 2,2,3,3-tetrafluorooxirane Chemical class FC1(F)OC1(F)F LOUICXNAWQPGSU-UHFFFAOYSA-N 0.000 description 1
- UWNGUOVHDOXBPJ-UHFFFAOYSA-N 2,3,3,3-tetrafluoro-2-(trifluoromethoxy)propanenitrile Chemical compound FC(F)(F)OC(F)(C#N)C(F)(F)F UWNGUOVHDOXBPJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- -1 fluoromethane ethers Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N monofluoromethane Natural products FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- GVGCUCJTUSOZKP-UHFFFAOYSA-N nitrogen trifluoride Chemical class FN(F)F GVGCUCJTUSOZKP-UHFFFAOYSA-N 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000004812 organic fluorine compounds Chemical class 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical class FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
- H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3052—Linear spring motors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
Definitions
- the invention relates to the field of switches, in particular the circuit breaker, combined disconnector and earthing switch, circuit breaker and / or earthing switch, further in particular the circuit breaker, combined disconnector and earthing switch, circuit breaker and / or earthing switch for high voltages.
- the invention particularly relates to a switch and a method for disconnecting a switch.
- the invention relates to a switch having a snap connection and a method for disconnecting a switch comprising releasing a snap connection.
- Circuit switches such as circuit breakers
- a circuit breaker can be used to disconnect a circuit.
- a circuit breaker is used to open and / or close a connection when no current or only a very small current is flowing, for example, after the Stromfiuss was turned off or before the Stromfiuss was turned on. This distinguishes a circuit breaker from a circuit breaker that is used to turn on and / or turn off the current flow even at higher currents.
- a switch and method for disconnecting a switch are provided that solve at least some of the problems of the prior art.
- a switch according to claim 1 and a method according to claim 11 are provided. Further embodiments, embodiments and aspects of the present invention will become apparent from the dependent claims, the description and the accompanying drawings.
- a switch is provided.
- the switch comprises a housing, a first contact arrangement, which has a first contact element or commutation contact element and a first contact, and a second contact arrangement, which has a second contact element or commutation contact element and a second contact.
- the switch further comprises a nominal contact arrangement for transmitting the electrical power during operation of the switch in its closed state.
- the first contact is movable along an axis between a closed contact position in which the first contact contacts the second contact and an opened contact position in which the first contact is separated from the second contact.
- the first commutation contact element is movable along an axis between a closed Kommut réelleskontak- telement position in which the first Kommut réellesromeelement contacts the second Kommut réelles giftedelement, and an open Kommut réellesromeelement position in which the first Kommut réelles giftedelement is separated from the second Kommut réelles giftedelement.
- the first commutation contact element and the second commutation contact element are designed to form a snap connection with one another in the closed commutation contact element position.
- the first commutating contact element is coupled to the first contact via a first stop, a second stop and an elastic element, such that a) when the first contact is moved toward the closed contact position, the first stop connects the first commutation contact element to the closed contact B) when the first contact is moved in the existing snap connection from the closed contact position toward the open contact position, the elastic element biases the first Kommut réellesêtelement toward the open Kommut réelleENSs giftedelement position, c ) When the first contact during movement towards the open contact position exceeds a defined stop position, the second stop the first Kommut réellesMEDIAelement towards the open Kommut réelles giftedelement- position entrains to the snap connection to delete sen.
- the speed for opening the commutating contact elements can be increased. Thereby, the risk of the occurrence of an arc can be reduced. Furthermore, the risk of the occurrence of an arc when closing the switch can also be reduced.
- a method of disconnecting a switch comprises a housing, a first contact arrangement, which has a first commutation contact element and a first contact, and a second contact arrangement, which has a second commutation contact element and a second contact, wherein the first contact projects with respect to the first commutation contact element in the direction of the second contact arrangement, and the second contact projects beyond the second commutation contact element in the direction of the first contact arrangement.
- the switch further comprises a nominal contact arrangement for transmitting the electrical power during operation of the switch in its closed state.
- Disconnecting occurs from a closed commutating contact element position, in which the first commutating contact element contacts the second commutating contact element, into an open commutating contact element position, in which the first commutating contact element is separated from the second commutating contact element.
- the method includes moving, at a first speed, the first contact, upon a snap connection between the first commutating contact element and the second commutating contact element, along an axis from a closed contact position in which the first contact contacts the second contact to an opened one Contact position in which the first contact is separated from the second contact.
- the elastic element biases the first commutation contact element in the direction of the open commutation contact element position.
- the snap connection is released and the first commutation contact element is moved toward the open commutating contact element position at a second speed, the second speed being greater than that first speed is.
- the switch when the switch is closed, the first contact and the second contact contact (touch) before the first commutation contact element and the second commutation contact element.
- the first contact and the second contact In order for an arc between the first contact and the second contact is selectively formed, whereby the first commutation contact element and the second commutation contact element are protected in the operation of the switch from damage by burning and the like.
- the electrical connection between the first contact and the second contact will be timed before the electrical connection between the first commutating contact element and the second commutating contact element.
- This constellation is advantageous for ensuring that an arc is formed between the first commutation contact element and the second commutation contact element, so that the first contact and the second contact are protected against damage during operation of the switch.
- Figure 1 is a schematic partial view of a switch in an open state according to embodiments of the invention
- Figure 2 is a schematic partial view of a switch shortly before the closing of the snap connection according to embodiments of the invention
- Figure 3 is a schematic partial view of a switch in a state shortly before the separation of the snap connection according to embodiments of the invention.
- FIG. 1 schematically shows a partial view of a switch 100.
- the switch 100 comprises a housing 105, a first contact arrangement 110 and a second contact arrangement 120, as well as a nominal contact arrangement 117, 115, 124, which will be discussed in more detail later.
- the switch 100 is shown in an open switch position in which the first contact arrangement 110 and the second contact arrangement 120 are separate from each other.
- the first contact arrangement 110 has a first contact element 112 or commutation contact element 112
- the second contact arrangement 120 has a second contact element 122 or commutation contact element 122.
- the first commutation contact element 112 and the second commutation contact element 122 are also arranged in an open commutation contact element position, in which the first commutation contact element 112 is separated from the second commutation contact element 122.
- the first contact arrangement 110 has a first contact 114 and the second contact arrangement 120 has a second contact 124.
- the first contact 114 and the second contact 124 are also arranged in an open contact position, in which the first contact 114 is separated from the second contact 124.
- the first commutation contact element 112 is movable along an axis A.
- the axis A may extend from the first contact arrangement 110 to the second contact arrangement 120.
- the first commutation contact element 112 is movable along the axis A between the open commutation contact element position and the closed commutation contact element position, in which the first commutation contact element 112 contacts the second commutation contact element 122 (see FIG. 2). If the first commutation contact element 112 and the second commutation contact element 114 are in the closed commutation contact element position, a current, in particular a commutation current when opening the switch 100, can flow via the first commutation contact element 112 and the second commutation contact element 114.
- first commutation contact element 112 and the second commutation contact element 114 can be burnout contacts or commutation contacts, in particular for opening the switch 100.
- the first contact 114 is movable along the axis A.
- the first contact 114 is movable between the open contact position and a closed contact position in which the first contact 114 contacts the second contact 124.
- the first contact 114 is between the open contact position and a closed contact position, in which the first contact 114 contacts the second contact 124, movable along the axis A.
- a current in particular a commutation current when closing the switch 100
- the closed switch position preferably no or only a very small current flows via the first contact 114 and the second contact 124.
- no nominal current flows via the first contact 114 and the second contact 124.
- the first contact 114 and the second contact 124 may be Abbrandkon- or commutation, in particular for closing the switch 100th
- the first commutation contact element 112 and the second commutation contact element 122 are configured to snap together in the closed commutating contact element position.
- a "snap fit" may be understood as a functional element for releasable, simple positive fit joining of components such as the first commutating contact element 112 and the second commutating contact element 122. At least one joining part, such as the first commutating contact element 112 and / or or the second commutation contact element 122, elastically deformed and then detachably hooked in.
- there can be a positive connection in particular between the first commutation contact element 112 and the second commutation contact element 122.
- a current can pass via the first commutation contact element 112 and the second commutation contact element 112 in the case of an existing snap connection Commutation contact element 122 flow.
- the first contact group 110 may comprise a contact part 115 and / or a first conducting contact 117.
- the contact part 115 may contact the first diverter contact 117.
- the second contact group 120 may have a second diverter contact 127.
- the contact part 115 can be movable along the axis A between a closed contact part position, in which the contact part 115 contacts the second diverter contact 127, and an open contact part position in which the contact part 115 is separated from the second diverter 127.
- the contact part 115 can thus form a stable electrical connection between the first diverter contact 117 and the second diverter contact 127.
- the switch can be in the closed contact part position with the switch position closed and / or in the opened contact part position when the switch position is open.
- the contact part 115 can be moved together with the first contact 114.
- the switch 100 can thus be designed so that the nominal current flow takes place via the contact part 115.
- the contact part 115 can therefore be a nominal contact.
- the switch 100 may have a nominal current flow equal to or greater than 100 A, in particular equal to or greater than 1000 A, typically equal to or greater than 1600 A, and / or nominal current flow equal to or less than 4000 A and / or a voltage equal to or greater than 52 kV, typically equal to or greater than 100 kV.
- dimensionally very compact switchgear can be realized. Since the demand for particularly compact switchgear is particularly large in comparison with high voltage switchgear with nominal voltages of about 170 kV and higher, the present invention enables a satisfaction of this continuing need.
- the first diverter contact 117 and / or the second diverter contact 127 may be formed as one or more spiral contacts 117, 127.
- the Ableitkinge 117, 127 may be designed to supply the nominal current to the contact part 115 and / or derive from it.
- the first contact group 110 further comprises an elastic element 116.
- the elastic member 116 may be, for example, a compression spring 116.
- the elastic element 116 may be connected to the first commutation contact element 112.
- the first contact group 110 may include a first stop 118 and a second stop 119.
- the elastic element 116 may be mounted or clamped between the first stop 118 and the second stop 119.
- the elastic element 116 can be tensioned, and / or the elastic element 16 can be relaxed when the first stop 118 and the second stop 119 move relative to one another.
- the elastic element 116 can thus build up a force that moves the first stop 118 and the second stop 119 away from each other.
- the first stop 118 may be connected to the first commutation contact element 112 so that they can be moved together.
- the second stop 119 may, for example, be connected to a housing 111 of the first contact arrangement 110. In particular, the second stop 119 can be moved together with the first contact 114.
- the first commutation contact element 112 and / or the first stop 118 can also be moved against the housing 111 of the first contact arrangement 110.
- the first commutation contact element 112 may be coupled to the first contact 114 via the first stop 118, the second stop 119 and the elastic element 116 such that a) when the first contact 114 moves toward the closed contact position the first stop 118 drives the first commutating contact element 112 toward the closed commutating contact element position; b) when the first contact 114 is moved from the closed contact position towards the open contact position when the snap connection is present, the elastic element 116 biases the first commutation contact element 112 in the direction of the open commutation contact element position, and c) when the first contact 114 exceeds a defined stop position during the movement toward the open contact position, the second stop 119 engages the first commutation contact element 112 in the direction to the open Kommutéess giftedelement position moves to release the snap connection.
- the switch 100 may be a circuit breaker, a combined disconnect and earthing switch (also called a combi-disconnector), a circuit breaker, or a grounding switch.
- the switch 100 may be a circuit breaker, a circuit breaker or a high voltage grounding switch.
- a high voltage may be a voltage equal to or greater than 1 kV, in particular equal to or greater than 52 kV.
- the switch 100 may be a gas-filled switch 100 filled with a dielectric insulating medium or gas. As part of this disclosure, the dielectric insulating medium or gas to 6 gas or some other dielectric insulation medium or arc extinguishing medium in the switch 100 SF, whether it is gaseous and / or liquid to be.
- Such a dielectric insulating medium or insulating gas may comprise, for example, an organic fluorine compound selected from the group consisting of: a fluoroether, an oxirane, a fluoramine, a fluoroketone, a fluoroolefin, a fluoronitrile, and mixtures and / or decomposition products of these substances ,
- an organic fluorine compound selected from the group consisting of: a fluoroether, an oxirane, a fluoramine, a fluoroketone, a fluoroolefin, a fluoronitrile, and mixtures and / or decomposition products of these substances .
- fluoroether oxirane
- fluoramine fluoramine
- fluoroketone fluoroolefin
- fluoronitrile refer to at least partly fluorinated substances.
- fluo- The term "oxirane” includes hydrofluoroxiranes and perfluoroxiranes
- fluoramine includes hydrofluoroamines and perfluoroamines
- fluoroketone includes hydrofluorocarbons and perfluoroketones
- fluoropolyether eg Galden
- fluoromethane ethers as well as hydrofluoroethers and perfluoroethers.
- Fluoroolefin includes hydrofluoroolefins and perfluoroolefins
- fluoronitrile includes hydro fluoronitriles and perfluoronitriles
- the fluoroether, oxirane, fluoramine, fluoroketone and fluoronitrile are or are completely fluorinated, ie perfluorinated.
- the dielectric isolation medium is selected from the group consisting of: one (or more) Hydrofluotechnikher, one (or more) perfluoroketone (s), one (or more) hydrofluoroolefin (s), one (or more) perfluoronitriles, and mixtures of these substances.
- fluoroketone is to be interpreted broadly in the context of the present invention and is intended to encompass both fluoromonoketones and fluorodiketones, or more generally fluoropolyketones, where more than one carbonyl group may be present laterally joined by carbon atoms in the molecule
- the at least partially fluorinated alkyl chain of the fluoroketones may be linear or branched and may optionally also form a ring.
- the dielectric insulating medium and arc extinguishing agent comprises as at least one component a fluoromonoketone, which may optionally also contain foreign atoms in the carbon backbone of the molecule, e.g. at least one foreign atom from the group consisting of: nitrogen atom, oxygen atom, sulfur atom, which replaces a corresponding number of carbon atom (s).
- the fluoromonoketone in particular perfluoroketone, has from 3 to 15 or from 4 to 12 and in particular from 5 to 9 carbon atoms.
- the fluoromonoketone has exactly 5 and / or exactly 6 and / or exactly 7 and / or exactly 8 carbon atoms.
- the dielectric isolation medium and arc quenching agent comprises as at least one component a hydrofluoroether selected from the group consisting of: hydro fluoro-monoethers comprising at least 3 carbon atoms; Hydro fluoro monoether comprising exactly 3 or exactly 4 carbon atoms; Hydrofluoromonether having a ratio of the number of fluorine atoms to the total number of fluorine and hydrogen atoms of at least 5: 8 hydro fluoronoethers having a ratio of the number of fluorine atoms to the number of carbon atoms in the range of 1.5: 1 to 2: 1; Pentafluoroethylmethyl ether; 2,2,2-trifluoroethyl-Trifluormethyltechnik; and mixtures of these substances.
- hydro fluoro-monoethers comprising at least 3 carbon atoms
- Hydro fluoro monoether comprising exactly 3 or exactly 4 carbon atoms
- Hydrofluoromonether having a ratio of the number of fluorine atoms to the total number
- the dielectric isolation medium comprises as at least one component a fluoroolefin selected from the group consisting of: Hydro fluoroolefins (HFO) having at least 3 carbon atoms, hydrofluoroolefins (HFO) having exactly 3 carbon atoms, 1, 1, 1, 2-tetrafluoropropene (HFO) 1234yf), l, 2,3,3-tetrafluoro-2-propene (HFO-1234yc), 1,1,3,3-tetrafluoro-2-propene (HFO-1234zc), 1,1,3,3-tetrafluoro 2-propene (HFO-1234ze), 1, l, 2,3-tetrafluoro-2-propene (HFO-1234ye), 1,1,1,3,3-pentafluoropropene (HFO-1225ye), 1,1, 2,3,3-pentafluoropropene (HFO-1225yc), 1,1,1,3,3-pentafluoropropenene (
- the dielectric isolation medium comprises, as at least one component or organofluoro compound, a fluoronitrile, in particular a perfluoronitrile.
- a fluoronitrile in particular a perfluoronitrile.
- the fluoronitrile or perfluoronitrile comprises at least or exactly 2 or 3 or 4 carbon atoms.
- the fluoronitrile is preferably a perfluoroalkylnitrile, in particular a perfluoroacetonitrile, perfluoropropionitrile (C2F5CN) and / or a perfluorobutyronitrile (C3F7CN).
- the fluoronitrile is a perfluoroisobutyronitrile (having the formula (CF3) 2CFCN) and / or a perfluoro-2-methoxypropanenitrile (having the formula CF3CF (OCF3) CN);
- perfluoroisobutyronitrile is especially advantageous because of its low toxicity.
- the dielectric isolation medium may also additionally comprise a background gas or carrier gas which is different from the organofluorine compound and which in particular is not a fluoroether, oxirane, fluoramine, fluoroketone, fluoroolefin or fluoronitrile.
- the carrier gas may be selected from the group consisting of: air, air component, N 2 , 0 2 , CO2, a noble gas, H 2 ; Nitrogen oxides and in particular N0 2 , NO, N 2 0; Fluorocarbons, and especially perfluorocarbons such as CF 4 ; CF3I, SF 6; and mixtures of these substances.
- the first commutation contact element 112 and / or the second commutation contact element 122 may be substantially symmetrical, in particular cylindrically symmetric, about the Be axis A.
- the first commutation contact element 112 and the second commutation contact element 122 can be designed so that they can form a positive connection with one another.
- the first commutation contact element 112 may be configured as a contact tulip
- the second commutation contact element 122 may be formed as a contact pin, so that the first commutation contact element 112 partially encloses the second commutation contact element 122 in the closed switch state.
- the second commutation contact element 122 may be formed as a contact tulip, and the first commutation contact element 112 may be formed as a contact pin, so that the second commutation contact element 122 partially encloses the first commutation contact element 112 in the closed switch state.
- a stable electrical connection between the first commutation contact element 112 and the second commutation contact element 122 can be formed.
- the second commutation contact element 122 can have a taper, in which a widening of the first commutation contact element 112 in the closed switch state can engage in order to form the snap connection.
- the first commutation contact element 112 may have a taper into which a widening of the second commutation contact element 122 in the closed switch state may engage to form the snap connection.
- this commutation contact element 112, 122 may have the widening
- the commutation contact element 112, 122 which is designed as a contact pin, may have the taper.
- the first contact 114 and / or the second contact 124 may, viewed from the axis A, be arranged on only one side of the first contact arrangement 110 and the second contact arrangement 120. Alternatively, the first contact 114 and / or the second contact 124 may be formed circumferentially about the axis A. For example, the first contact 114 and / or the second contact 124 may have a recess for a linear transmission (see below).
- the first contact 114 and / or the second contact 124 may serve to reduce or prevent the generation of an arc or its effects on the adjacent parts, such as the first contact group 110, the second contact group 120 and / or the housing 105 , In particular, they can determine the location where an arc occurs, influence so that the arc, for example, when closing the switch 100, between the first contact 114 and the second contact 124 is formed.
- the first commutation contact element 112, the second commutation contact element 122, the first contact 114 and / or the second contact 124 may comprise an arc-resistant material.
- the first contact 114 can withstand the first commutation contact element 112 in the direction of the second contact arrangement 120 and the second contact 124 can withstand the second commutation contact element 122 in the direction of the first contact arrangement 110, if the first contact 114 to the closed contact Position is moved.
- a distance between the first contact 114 and the second contact 124 is smaller than a distance between the first commutation contact element 112 and the second commutation contact element 122 in the direction of the axis (A).
- a distance between the first contact 114 and the second contact 124 may be less than a distance between the first commutation contact element 112 and the second commutation contact element 122.
- an arc is more preferably formed between the first contact 114 and the second contact 124 than between the first commutation contact element 112 and the second commutation contact element 122.
- the first stop 118 can be moved together with the first commutation contact element 112 against and / or with the direction of the force of the elastic element 116.
- the first stop 118 can be moved together with the first commutating contact element 112 against the direction of the force of the elastic element 116.
- the elastic member 116 can be tensioned.
- the elastic element 116 can relax and the first stop 118 can be moved together with the first commutation contact element 112 in the direction of the force of the elastic element 116.
- This movement is substantially uniform along a contact distance corresponding to a distance, the second contact 114 travels from the closed contact position to the open contact position, in particular to an end position of the contact position.
- the movement of the first contact 114 along the contact path can be at a first speed vi.
- the first speed vi can be substantially constant over the entire contact distance.
- the contact path can also cover the second stop 119 at the first speed vi.
- the second sequence of movements corresponds to the movement of the first commutation contact element 112 from the closed commutation contact element position into the opened commutation contact element position.
- the snap connection remains in the closed state and the first commutation contact element 112 does not move away from the second commutation contact element 122.
- a relative movement between the first commutation contact element 112 and the second contact 114 takes place via the first part of the contact path.
- first stop 118 which is arranged to be moved together with the first commutation contact element 112 and the second stop 119, which is arranged so as to be common with the first part of the contact path first contact 114 to be moved.
- the first stop 118 and the second stop 119 thus move towards each other. Since the elastic member 116 is supported between the first stopper 118 and the second stopper 119, the movement of the first stopper 118 and the second stopper 119 towards each other urges the elastic member 116.
- the elastic element 116 thus relaxes when the first part of the contact path is exceeded or when the snap connection is released, and pulls the first commutation contact element 112 at a pulling speed Vz in the direction of the opened one Kommut réelles giftedelement position.
- the second commutation contact element 112 moves back a distance which is predetermined by the first stop 118 and the second stop 119, in particular by a distance between the first stop 118 and the second stop 119.
- the pull rate Vz at which the elastic element 116 pulls the first commutation contact element 112 in the direction of the opened commutation contact element position, adds to the first speed vi, with which the first commutation contact element 112 via the positive connection of the first stop 118 and the second stop 119 is moved.
- the first commutation contact element 112 is thus separated at a second speed v2 from the second commutation contact element 122, which is greater than the first speed vi.
- the pulling speed Vz is preferably greater than the first speed.
- the speed with which the first commutation contact element 112 is moved away from the second commutation contact element 122 can be increased. This can also reduce the occurrence of an arc and the damage caused by this.
- the first commutation contact element 112 can be further pulled away from the second contact group 120 than the first contact 114.
- a drive (not shown) may be provided.
- the drive may drive the first contact 114 to move the first contact 114, in particular along the axis A, from the first contact position to the second contact position and from the second contact position to the first contact position.
- the drive via a transmission, in particular a linear gear, be positively connected to the first contact 114 to move the first contact 114 along the axis A.
- the drive can specify the first speed vi.
- FIG. 2 schematically shows a partial view of the switch 100 moving from the separate commutating contact element position to the closed commutating contact element position, in particular shortly before the first commutating contact element 112 contacts the second commutating contact element 122.
- the first contact 114 contacts the second contact 124 before the first commutation contact element 112 contacts the second commutation contact element 122.
- This can an arc is selectively formed between the first contact 114 and the second contact 124, whereby in particular damage to the first Kommut réellesWalletelements 112 and the second Kommuttechniks giftedelements 122 can be prevented.
- the first commutating contact element 112 During movement from the open commutating contact element position to the closed commutating contact element position, the first commutating contact element 112, the first contact 114, the first stop 118 and the second stop 119 can be moved together in the direction of the second contact arrangement 120.
- the elastic element 116 can not be tensioned by the movement from the opened commutating contact element position to the closed commutation contact element position.
- the snap connection described herein between the first commutating contact element 112 and the second commutating contact element 122 is formed in the closed commutating contact element position.
- the snap connection not only provides a mechanically stable connection between the first commutation contact element 112 and the second commutation contact element 122, but in combination with the mounting of the first commutation contact element 1 12 in the first contact arrangement 110 via the elastic element 116 has the advantage that the speed when separating the first contact arrangement 112 from the second contact arrangement 122 can be increased.
- FIG. 3 shows schematically a partial view of the switch 100 in the movement from the closed commutating contact element position to the separate commutating contact element position, in particular in a state shortly before the snap connection is released.
- the first Kommut réellesromeelement 112 and the second Kommut réelles giftedelement 122 still in the closed Kommut réelles giftedelement position, the first Kommut réelles giftedelement 112 has not yet been separated from the second Kommut réelles giftedelement 122.
- the first commutation contact element 112 and the second commutation contact element 122 are shown in a quasi-transparent manner, which is why both contours are visible in the contact region.
- the first contact 114 may already be separated from the second contact 124.
- the contact part 115 may already be in the open contact part position, ie already be separated from the second diverter contact 127.
- the first commutation contact element 112 in this state can withstand the first contact 114 in the direction of the second contact arrangement 120.
- the first contact 114 may already have traveled a part of the distance in the direction of the open contact position.
- the stop position is not reached, in which the snap connection is released. Consequently, the first stop 118 is still spaced from the second stop 119 and the positive connection of the first stop 118 and the second stop 119 is not yet done.
- Embodiments also include gas-insulated switchgear comprising one or more switches according to described embodiments.
- the invention has been exemplified with reference to a switch, in particular based on a shielding gas switch explained. However, it is also suitable for other switches for high and medium voltage applications, in particular of substations, eg for vacuum circuit breakers, self-blower circuit breakers, etc.
- the invention is suitable for alternative gas switch, so for switch, in particular with a Herein described alternative gas to SF 6 gas are filled. Also, the invention is suitable for switches that are filled with oil or air or other insulating medium.
- the present invention thus provides a method for disconnecting a switch 100.
- the switch 100 comprises a housing 105, a first contact arrangement 110 having a first commutation contact element 112 and a first contact 114, and a second contact arrangement 120 having a second commutation contact element 122 and a second contact 124, wherein the first contact 114 opposite to first commutation contact element 112 projects in the direction of the second contact arrangement 120 and the second contact 124 protrudes with respect to the second commutation contact element 122 in the direction of the first contact arrangement 110.
- the disconnection of the switch 100 occurs from a closed commutation contact element position, in which the first commutation contact element 112 contacts the second commutation contact element 122, into an open commutation contact element position, in which the first commutation contact element 112 is separated from the second commutation contact element 122.
- the method includes moving, at a first velocity vi, the first contact 114 upon a snap connection between the first commutation contact element 112 and the second commutation contact element 122 along an axis A from a closed contact position in which the first contact 114 is the first contact 114 contacted second contact 124, to an open contact position, in which the first contact 114 is separated from the second contact 124.
- a cycle of a closing movement and a ⁇ ffhungshunt may consist in particular of three contacting levels.
- the first contact 114 may first contact the second contact 124, allowing a commutation current to flow between the first contact 114 and the second contact 124. Thereafter, the contact part 115 can contact the second diverter contact 127, whereby the switch 100 can be closed. Through the contact part 115, the nominal current can flow in contact with the second diverter contact 127.
- the contact part 115 can first be separated from the discharge contact 127. Then, the first contact 114 may be disconnected from the second contact 124. Subsequently, the first contact element 112 can be separated from the second contact element 122 via the snap connection, as a result of which a commutation current can flow between the first contact element 112 and the second contact element 122.
- opening and closing an occurrence of arcs can be reduced and thus damage to the switch can be reduced.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016115912 | 2016-08-26 | ||
PCT/EP2017/070855 WO2018036904A1 (en) | 2016-08-26 | 2017-08-17 | Switch and method for disconnecting a switch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3504726A1 true EP3504726A1 (en) | 2019-07-03 |
EP3504726B1 EP3504726B1 (en) | 2020-12-02 |
Family
ID=59683567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17755157.9A Active EP3504726B1 (en) | 2016-08-26 | 2017-08-17 | Switch and method for disconnecting a switch |
Country Status (6)
Country | Link |
---|---|
US (1) | US10720291B2 (en) |
EP (1) | EP3504726B1 (en) |
KR (1) | KR102491405B1 (en) |
CN (1) | CN109643619B (en) |
HU (1) | HUE052765T2 (en) |
WO (1) | WO2018036904A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4227971A1 (en) * | 2022-02-09 | 2023-08-16 | Hitachi Energy Switzerland AG | High voltage disconnector switch |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2811612A (en) | 1956-02-23 | 1957-10-29 | Mc Graw Edison Co | Load break interrupter |
DE2704389C3 (en) * | 1977-01-31 | 1980-06-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Disconnector for metal-enclosed high-voltage switchgear |
CH653474A5 (en) | 1980-05-14 | 1985-12-31 | Bbc Brown Boveri & Cie | WALK CONTACT DEVICE OF AN ELECTRICAL SWITCH. |
EP0042456B1 (en) * | 1980-06-23 | 1985-01-23 | BBC Aktiengesellschaft Brown, Boveri & Cie. | High voltage power circuit breaker |
EP0046824B1 (en) * | 1980-09-01 | 1984-07-11 | Sprecher + Schuh AG | Gas blast switch |
DE3122442A1 (en) * | 1981-06-02 | 1982-12-23 | Siemens AG, 1000 Berlin und 8000 München | DISCONNECTOR FOR HIGH VOLTAGE SYSTEMS |
YU173582A (en) * | 1981-09-16 | 1985-03-20 | Bbc Brown Boveri & Cie | Electrical switch |
DE3331819A1 (en) * | 1983-09-01 | 1985-03-21 | Siemens AG, 1000 Berlin und 8000 München | DISCONNECTOR FOR METAL-ENCLOSED, COMPRESSED-GAS INSULATED HIGH-VOLTAGE SWITCHGEAR |
DE3938711A1 (en) * | 1989-11-17 | 1991-05-23 | Siemens Ag | DISCONNECTOR FOR METAL-ENCLOSED, PRESSURE-GAS INSULATED HIGH-VOLTAGE SWITCHGEAR |
FR2748598B1 (en) * | 1996-05-13 | 1998-06-05 | Gec Alsthom T & D Sa | HIGH-VOLTAGE SELF-BLOWING CIRCUIT BREAKER |
US6236010B1 (en) | 1999-07-14 | 2001-05-22 | Southern States, Inc. | Circuit interrupter including a penetrating electrical contact with grip and release structure |
DE102010062343A1 (en) * | 2010-12-02 | 2012-06-06 | Siemens Aktiengesellschaft | Electric contact arrangement |
TWM420835U (en) * | 2011-08-18 | 2012-01-11 | Sung Jung Minute Industry Co Ltd | Rectifier chip terminal |
DE102012203042B4 (en) * | 2012-02-28 | 2024-01-25 | Siemens Aktiengesellschaft | Switching device and electrical switching device |
EP2728602B1 (en) * | 2012-11-05 | 2015-01-21 | ABB Technology AG | Electrical high voltage circuit breaker and method for opening same |
FR3016470B1 (en) * | 2014-01-14 | 2016-02-26 | Alstom Technology Ltd | DISCONNECT WITH FAILURE DETECTION OF ACCELERATION SPRING OF ARC CONTACT |
CN104867785B (en) * | 2015-05-11 | 2017-03-01 | 温州大学 | Permanent magnetism type contactor with disjunction protection device |
-
2017
- 2017-08-17 EP EP17755157.9A patent/EP3504726B1/en active Active
- 2017-08-17 KR KR1020197008287A patent/KR102491405B1/en active IP Right Grant
- 2017-08-17 HU HUE17755157A patent/HUE052765T2/en unknown
- 2017-08-17 WO PCT/EP2017/070855 patent/WO2018036904A1/en unknown
- 2017-08-17 CN CN201780052558.6A patent/CN109643619B/en active Active
-
2019
- 2019-02-26 US US16/285,882 patent/US10720291B2/en active Active
Also Published As
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US20190198272A1 (en) | 2019-06-27 |
US10720291B2 (en) | 2020-07-21 |
CN109643619A (en) | 2019-04-16 |
KR20190039308A (en) | 2019-04-10 |
EP3504726B1 (en) | 2020-12-02 |
WO2018036904A1 (en) | 2018-03-01 |
HUE052765T2 (en) | 2021-05-28 |
CN109643619B (en) | 2020-12-25 |
KR102491405B1 (en) | 2023-01-20 |
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