EP3087578A1 - Electrical switching device - Google Patents
Electrical switching deviceInfo
- Publication number
- EP3087578A1 EP3087578A1 EP14828031.6A EP14828031A EP3087578A1 EP 3087578 A1 EP3087578 A1 EP 3087578A1 EP 14828031 A EP14828031 A EP 14828031A EP 3087578 A1 EP3087578 A1 EP 3087578A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- volume
- exhaust gas
- exhaust
- switching device
- electrical switching
- 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
- IYRWEQXVUNLMAY-UHFFFAOYSA-N fluoroketone group Chemical group FC(=O)F IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 claims abstract description 45
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229920001774 Perfluoroether Polymers 0.000 claims abstract description 14
- MDQRDWAGHRLBPA-UHFFFAOYSA-N fluoroamine Chemical compound FN MDQRDWAGHRLBPA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000013011 mating Effects 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 237
- 239000000203 mixture Substances 0.000 claims description 38
- 125000004432 carbon atom Chemical group C* 0.000 claims description 32
- 238000009413 insulation Methods 0.000 claims description 22
- 230000008033 biological extinction Effects 0.000 claims description 20
- 238000000354 decomposition reaction Methods 0.000 claims description 20
- 230000003116 impacting effect Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 238000010891 electric arc Methods 0.000 claims description 11
- 230000001965 increasing effect Effects 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- 230000006978 adaptation Effects 0.000 claims description 7
- JECYNCQXXKQDJN-UHFFFAOYSA-N 2-(2-methylhexan-2-yloxymethyl)oxirane Chemical compound CCCCC(C)(C)OCC1CO1 JECYNCQXXKQDJN-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Natural products O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 4
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000306 component Substances 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 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 claims description 2
- AASDJASZOZGYMM-UHFFFAOYSA-N 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile Chemical group FC(F)(F)C(F)(C#N)C(F)(F)F AASDJASZOZGYMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 241000722921 Tulipa gesneriana Species 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- MTLOQUGSPBVZEO-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanenitrile Chemical compound FC(F)(F)C(F)(F)C#N MTLOQUGSPBVZEO-UHFFFAOYSA-N 0.000 claims 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 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 41
- 230000008901 benefit Effects 0.000 description 8
- -1 hydrofluoroether Chemical compound 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 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
- 238000005422 blasting Methods 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- GVGCUCJTUSOZKP-UHFFFAOYSA-N nitrogen trifluoride Chemical compound FN(F)F GVGCUCJTUSOZKP-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 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
- SFFUEHODRAXXIA-UHFFFAOYSA-N 2,2,2-trifluoroacetonitrile Chemical compound FC(F)(F)C#N SFFUEHODRAXXIA-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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical class FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/22—Selection of fluids for arc-extinguishing
-
- 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
-
- 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
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in 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
- H01H33/88—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
- H01H2033/888—Deflection of hot gasses and arcing products
Definitions
- the invention is in the field of medium and high voltage switching technologies and relates to an electrical switching device and a method for operating it according to the independent claims, particularly for a use as an earthing device, a fast-acting earthing device, a circuit breaker, a generator circuit breaker, a switch disconnector, a combined disconnector and earthing switch, or a load break switch in power transmission and distribution systems.
- At least one intermediate volume is arranged, is enclosed by an intermediate wall, comprises at least one inlet opening for receiving exhaust gas coming from the arcing region, and comprises at least one outlet opening, which outlet opening is facing an opposing wall, in particular of the exhaust volume, and is for producing at least one exhaust gas jet and for discharging it towards and impacting it on the opposing wall.
- Fig. 4 a graph showing absorbed thermal energy in kilo-Joule versus time after current zero CZ in seconds for novel arc extinction media (here fluoroketone in a mixture with air) compared to conventional SF 6 ,” and
- Switching device means electrical switching device and can encompass, for example, a high-voltage circuit breaker, a generator circuit breaker, a disconnector, a combined disconnector and earthing switch, a load break switch, an earthing device, or a fast-acting earthing device.
- the first arcing contact 4a is attached to an exhaust tube 7 ' ' ' and the first nominal contact 3a is attached to a first intermediate volume 7 which at least partially surrounds the exhaust tube 7 ' ' ' .
- the hollow exhaust tube 7' ' ' is mechanically connected to the first arcing contact 4a at a second end part, and/or
- fluoroketone as used in the context of the present invention shall be interpreted broadly and shall encompass both fluoromonoketones and fluorodiketones or generally fluoropolyketones . Explicity, more than a single carbonyl group flanked by carbon atoms may be present in the molecule. The term shall also encompass both saturated compounds and unsaturated compounds including double and/or triple bonds between carbon atoms.
- the at least partially fluorinated alkyl chain of the fluoroketones can be linear or branched and can optionally form a ring.
- Fig. 4 shows the beneficial effect of using the first intermediate volume 7 in conjunction with the dielectric insulation medium comprising a fluoroketone, specifically gaseous C5-fluoroketone (i.e. comprising exactly 5 carbon atoms) , in a mixture with air as background gas.
- the graphs are showing absorbed thermal energy in kilo-Joule (i.e. exhaust gas cooling) versus time after current zero CZ in seconds for fluorketone-air mixtures (upper curve) compared to conventional SF 6 (lower curve) .
- This prooves that the novel arc extinction medium comprising organofluorine compounds have unexpectedly better exhaust gas cooling by an intermediate volume 7, 8 as disclosed herein.
- Fig. 2 shows a sectional view of another embodiment of a high voltage circuit breaker 1 in an opened configuration.
- This embodiment is similar to the embodiment described in connection with Fig. 1 with the difference that the first wall 14a (here shown for left- hand first intermediate volume 7, but alternatively or in addition equally applicable to right-hand second intermediate volume 8) is actuated in a different way for its movement along the longitudinal axis z.
- no actuator and spring are present. Instead the actuation is done by using a drive 17 which is already present in the circuit breaker 1 and is coupled to the nominal and/or arcing contacts 3a, 3b, 4a, 4b by a drive rod.
- Fig. 2 also shows an embodiment of a second wall 14b being moveable transversely to the longitudinal axis z. This is, among other possibilities of providing moveable first and/or second moveable walls 14a, 14b, useful and can be implemented in a relatively simple manner .
- the electrical switching device 1 in particular as disclosed above, has a longitudinal axis z, comprises an arcing volume 6 and at least an arcing contact arrangement with a first arcing contact 4a and a mating second arcing contact 4b, and further comprises an exhaust system 7, 7', 7'', 7 ' ' ' ; 8, 8', 8'' with at least one exhaust volume 7'; 8', wherein for closing and opening the electric switching device 1 at least one of the arcing contacts 4a, 4b is movable parallel to the longitudinal axis z and coope ⁇ rates with the other arcing contact 4b, 4a, wherein the electrical switching device 1 comprises a dielectric insulating medium comprising an organofluorine compound selected from the group consisting of fluoronitriles , in particular perfluoronitriles , and mixtures and/or decom ⁇ position products thereof, wherein inside the exhaust volume 7'; 8'
Landscapes
- Gas-Insulated Switchgears (AREA)
- Organic Insulating Materials (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14828031.6A EP3087578B1 (en) | 2013-12-23 | 2014-12-22 | Electrical switching device |
BR112016014319A BR112016014319A8 (en) | 2013-12-23 | 2014-12-22 | ELECTRICAL SWITCHING DEVICE |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP2013077960 | 2013-12-23 | ||
EP14828031.6A EP3087578B1 (en) | 2013-12-23 | 2014-12-22 | Electrical switching device |
PCT/EP2014/078975 WO2015097143A1 (en) | 2013-12-23 | 2014-12-22 | Electrical switching device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3087578A1 true EP3087578A1 (en) | 2016-11-02 |
EP3087578B1 EP3087578B1 (en) | 2018-02-28 |
Family
ID=56979723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14828031.6A Active EP3087578B1 (en) | 2013-12-23 | 2014-12-22 | Electrical switching device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3087578B1 (en) |
BR (1) | BR112016014319A8 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4125108A1 (en) * | 2021-07-26 | 2023-02-01 | Hitachi Energy Switzerland AG | Gas-insulated high or medium voltage circuit breaker |
-
2014
- 2014-12-22 EP EP14828031.6A patent/EP3087578B1/en active Active
- 2014-12-22 BR BR112016014319A patent/BR112016014319A8/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4125108A1 (en) * | 2021-07-26 | 2023-02-01 | Hitachi Energy Switzerland AG | Gas-insulated high or medium voltage circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
BR112016014319A2 (en) | 2017-08-08 |
EP3087578B1 (en) | 2018-02-28 |
BR112016014319A8 (en) | 2017-12-26 |
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