EP4078642A1 - Insulation medium for an electric energy transfer device - Google Patents
Insulation medium for an electric energy transfer deviceInfo
- Publication number
- EP4078642A1 EP4078642A1 EP21708119.9A EP21708119A EP4078642A1 EP 4078642 A1 EP4078642 A1 EP 4078642A1 EP 21708119 A EP21708119 A EP 21708119A EP 4078642 A1 EP4078642 A1 EP 4078642A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulation
- insulation medium
- medium
- volume
- transmission device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 107
- 150000004812 organic fluorine compounds Chemical class 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 238000002955 isolation Methods 0.000 claims description 36
- 230000005540 biological transmission Effects 0.000 claims description 31
- 239000004020 conductor Substances 0.000 claims description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 101150046432 Tril gene Proteins 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- IYRWEQXVUNLMAY-UHFFFAOYSA-N fluoroketone group Chemical group FC(=O)F IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 description 5
- -1 fluoronitrile Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 229920000891 common polymer Polymers 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052756 noble gas Inorganic materials 0.000 description 2
- 150000002835 noble gases Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 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
- 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
- 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 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical compound CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- 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
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/56—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
Definitions
- Insulation medium for an electrical energy transmission device Insulation medium for an electrical energy transmission device
- the invention relates to an insulation medium for an electrical energy transmission device, such as for a high-voltage switch or a fluid-insulated pipe conductor, the insulation medium being a fluid at room temperature and atmospheric pressure.
- the invention also relates to an electrical energy transmission device which has such an Isolati onsmedium.
- Electrical power transmission devices such as gas-insulated pipe conductors or high-voltage switches or circuit breakers, are well known in the art.
- DE 102017 220 570 A1 relates to an insulation medium for an electrical energy transmission device, the insulation medium being a fluid at room temperature and atmospheric pressure, and the insulation medium having at least the following components: synthetic air in a content of> 50% by volume
- the object is achieved according to the invention by an insulation medium for an electrical energy transmission device with the features of claim 1.
- the object is also achieved according to the invention by using an insulation medium as an electrically insulating atmosphere in a fluid-insulated electrical energy transmission device according to claim 6.
- the object is achieved according to the invention is also carried out by a fluid-insulated electrical energy transmission device with the features of claim 7.
- Preferred embodiments of the invention are described in the subclaims, in the description or the figures, with further features described or shown in the subclaims or in the description or in the figures or in any combination an object of the invention can represent if the context does not clearly indicate the opposite.
- insulation medium for an electrical energy transmission device is proposed, the insulation medium being a fluid at room temperature and atmospheric pressure, and the insulation medium having at least the following components:
- An insulation medium described above allows a reliable reduction or extinction of an arc in a high-voltage switch and allows long-term stable or long-term functional operation of the high-voltage switch and is also particularly advantageous as an insulating atmosphere in a fluid-insulated pipe.
- a high-voltage switch or a fluid-insulated pipe conductor can be used as such.
- a high-voltage switch can in particular be understood to mean a switching device that has an electrical conductor that can be opened or closed by appropriate contact elements and thus allow or interrupt a current flow.
- the high-voltage switch can be suitable for carrying high currents or the application of a high voltage, and arcing can occur when the contacts are disconnected or opened.
- Exemplary currents that can be separated by a circuit breaker of a high-voltage switch can be in a range of up to 80,000 A.
- voltages in a range of up to 800,000 V can be applied to the switching device.
- a fluid-insulated pipe conductor can be understood in particular as a conductor in which normal operating voltages of approximately up to 500 kV with rated currents per conductor of up to approximately 5 kA can be present.
- the conductor can be present in an outer tube, with an insulating atmosphere being present in the outer tube and surrounding the conductor and with post insulators being present for mechanical support of the conductor.
- the insulation medium should thus serve to isolate a volume occurring in the electrical energy transmission device, in particular the high-voltage switch or disconnector or earthing switch, and, if necessary, to prevent an arc that may occur, particularly when contact elements are disconnected, but also when they are closed delete or ensure sufficient insulation in the pipe.
- this is a fluid, for example gaseous, at room temperature and atmospheric pressure, for example in a range from atmospheric pressure to 10 bar (absolute).
- room temperature is also understood to mean a temperature of 22 ° C.
- atmospheric pressure is understood to mean a pressure of 1 bar and pressures mentioned in principle are to be understood as absolute values.
- the isolation medium is a fluid, for example gaseous, even under the operating conditions, that is to say under an increased pressure and / or an increased or decreased temperature, as is described below.
- the insulation medium By providing a fluid insulation medium, it can be made possible in a particularly simple manner that the insulation medium is introduced into an insulation space of the high-voltage switch or pipe and remains there. As a result, the insulation medium can completely surround contact elements, between which an arc can arise when they are separated or closed, or a conductor in a pipe conductor. Thus, in principle, the formation of an arc can be counteracted or extinguishing of the arc can be effectively supported or effective insulation of the conductor can be brought about.
- a gaseous insulation medium enables simple handling, for example when it is introduced into the insulation space, when it is held in the insulation space and, if necessary, when it is exchanged.
- the amount of existing isolation medium in the isolation space can be easily adapted and so the insulation capacity can be tailored to the desired application area.
- the insulation medium has at least the following components:
- the insulation medium can consist of nitrogen and the at least one organic fluorine compound in the proportions mentioned above, with any impurities being or impurities in the substances or, in principle, other substances must be taken into account and may be present in a content of ⁇ 0.1% by volume, for example in a content of ⁇ 0.01% by volume.
- Characteristic of this insulation medium is therefore in particular its special composition, which can be composed of nitrogen and the organic fluorine compound in particular.
- synthetic air or carbon dioxide is not used, or only to a very limited extent, in addition to the organic fluorine compound, but rather nitrogen that is as pure as possible.
- oxygen and water are present together in the insulation medium in a content of ⁇ 0.1% by volume, for example ⁇ 0.01% by volume, for example ⁇ 1 ppm by volume, about ⁇ 0.5 ppm by volume, or the insulation medium is also completely free of oxygen and water.
- the insulation medium has:
- Oxygen and optionally other components in the insulation medium can be present in a content of ⁇ 0.1% by volume, for example ⁇ 0.01% by volume.
- an improved long-term stability or a improved long-term functionality are made possible. It was found that compared to oxygen-containing and in particular water-containing gas mixtures with in particular fluoronitrile components, the risk of corrosion mechanisms in particular, which can limit the service life of switchgear, can be significantly reduced. In addition, in switching cases with high energy input (for example arcing faults, short-circuit connections), according to the invention, the risk of flammability, in particular in the case of fluoronitrile proportions greater than or equal to 5%, is significantly reduced.
- insulation media which comprise a fluoronitrile and an oxidizing carrier gas, such as oxygen, and possibly water
- an oxidizing carrier gas such as oxygen, and possibly water
- connections between the material of the component (usually Copper or silver) and the oxidizing effect of the carrier gas (usually oxygen) It is therefore usually a matter of metal complexes, in particular oxides, on the surface of the conductive components, which in turn react with the organic fluorine compound, in particular fluoronitrile.
- the use of the insulation gas described here prevents the formation of metal complexes or the formation of oxides on the surface. terbindet or so greatly reduced that a reaction with the fluorine compound, in particular with nitrile groups of fluoronitrile, is sustainably reduced on the surface of the components and thus the aging properties of the insulating medium are significantly improved.
- Current-carrying components are understood to mean the components in the switchgear that are used to conduct electrical current, in particular the contacts and the electrical supply lines.
- improved properties can be made possible according to the invention.
- improved long-term tightness can be made possible light.
- permeation mechanisms for example on elastomeric sealing materials, are significantly reduced, as described in greater detail below.
- insulation media according to the present invention do not have a significant tendency to form soot in disconnectors and earthing switches, which in combination with vacuum circuit breakers can also improve long-term functionality or long-term stability.
- an insulation medium described here in particular in combination with vacuum circuit breakers, enables an arc to be effectively extinguished in disconnectors and earthing switches and also enables long-term stable operation even with several switching operations of the high-voltage switch, or that one effective insulation of a conductor in an outer wall of a pipe is made possible.
- insulation media which contain nitrogen and one or more organofluorine components in the amounts described above, and where oxygen and in particular water is essentially dispensed with, that an improved long-term sealing. activity of switching devices or in pipelines is made possible, as was already indicated above. This can be due in particular to the fact that the insulation medium has a comparatively low permeation rate based on common polymers, which are mostly used as sealing materials. In particular, nitrogen has a particularly low permeation rate through common polymers.
- Exemplary polymers as sealing materials include, for example, EPDM (ethylene-propylene-diene rubber), NBR (nitrile-butadiene rubber), CR (chloroprene rubber), IIR (isobutene-isoprene rubber), SBR (styrene-butadiene rubber) Rubber) or FKM (fluoropolymer rubber).
- EPDM ethylene-propylene-diene rubber
- NBR nitrile-butadiene rubber
- CR chloroprene rubber
- IIR isobutene-isoprene rubber
- SBR styrene-butadiene rubber
- FKM fluoropolymer rubber
- the dielectric strength of the insulation medium is improved.
- the effectiveness of an insulation can be particularly high, especially when compared to pure synthetic air or also compared to pure nitrogen.
- organofluorine compound in the insulation medium is in a range of
- the at least one organofluorine compound is selected from the group consisting of fluoronitriles, such as perfluoronitriles, fluorethers, such as hydrofluoromonoethers, fluoroolefins, such as hydrofluoroolefins, and fluoroketones, such as perfluoroketones.
- Preferred organofluorine compounds can have hydrofluoromonoethers with at least three carbon atoms, fluoroketones with a number of four to twelve carbon atoms, for example five or six carbon atoms.
- the organofluorine compound can be a perfluoroalkylnitrile, such as a compound selected from perfluoroacetonitrile, perfluoropropionitrile (C 2 F 5 CN), perfluorobutyronitrile (C 3 F 7 CN), perfluoroisobutyronitrile (CF 3 ) 2 CFCN), perfluoro-2 -methoxypropanenitrile (CF 3 CF (OCF 3 ) CN), or mixtures thereof, as described for example in WO2015 / 071303 A1. These compounds are generally described as fluoronitriles.
- perfluoroalkylnitrile such as a compound selected from perfluoroacetonitrile, perfluoropropionitrile (C 2 F 5 CN), perfluorobutyronitrile (C 3 F 7 CN), perfluoroisobutyronitrile (CF 3 ) 2 CFCN), perfluoro-2 -methoxypropanenitrile (CF 3
- the dielectric strength or the insulation quality can be particularly high even when using such organofluorine compounds.
- the effect of extinguishing an arc can be particularly effective or effective electrical insulation of the contact elements or the conductor can be made possible even with high currents.
- the insulation medium is essentially free of at least one, for example all of water, carbon dioxide, and noble gases.
- the insulation medium can be completely free of water, Be carbon dioxide and noble gases.
- essentially free should in particular mean that the aforementioned substances are present in the insulation medium in a proportion of ⁇ 0.1% by volume, for example of
- ⁇ 1 ppm by volume for example ⁇ 0.5 ppm by volume, or completely free thereof.
- the aforementioned corrosion mechanisms can be prevented particularly effectively, so that the long-term stability can be improved in particular in this embodiment, especially in the absence of water.
- the purity in this embodiment is particularly high, so that the insulation medium has defined and predictable properties.
- High-voltage switching devices based on the insulation medium according to the invention in particular in combination with vacuum circuit breakers, also have an improved service life, especially compared to SF 6 technology, for example due to the decomposition of the gas through switching operations and material burn-off.
- the insulation medium consists of nitrogen and at least one organofluorine compound.
- the insulation medium should only contain further substances in a proportion of ⁇ 0.1% by volume, for example of
- ⁇ 1 ppm by volume for example ⁇ 0.5 ppm by volume, or completely absent.
- the insulation medium has other constituents, such as nitrogen oxides or carbon dioxide oxide. However, this is preferably in a range of a maximum of 1% by volume, for example a maximum of 0.5% by volume.
- the present invention also relates to the use of an insulating medium, as described in detail above, as an electrically insulating atmosphere in a fluid-insulated electrical energy transmission device, such as in a high-voltage switch or as an electrically insulating atmosphere in a fluid-insulated pipe.
- the isolation medium previously defined in detail, it is possible, in particular, to combine a high level of isolation with long-term stable operation of the electrical energy transmission device. Furthermore, a particularly good insulation quality and long-term stability of the insulating atmosphere in the pipe conductor can be made possible.
- the present invention also relates to a fluid-insulated electrical energy transmission device, having a fluid-tight sealed isolation space, an isolation medium being arranged in the isolation space or in a reservoir that can be connected to the isolation space, the isolation medium being designed as described in detail above.
- An electrical energy transmission device can in principle be understood to mean any device in which energy, in particular in the form of electricity, can be transmitted.
- the electrical energy transmission device has at least one of a high-voltage switch and a fluid-insulated pipe conductor.
- a high-voltage switch or a fluid-insulated pipe conductor are designed in particular, as described in detail above and below.
- the space of the pipe that surrounds the conductor and is surrounded by an outer wall is the insulation space in which the insulation medium is preferably permanently contained in a pipe.
- the high-voltage switch comprises an insulation space also referred to as a fluid receiving space.
- a first switching unit is arranged, which can be designed in particular as an earthing switch or as a disconnector or as an earthing switch and disconnector.
- an insulation medium is provided in the insulation space itself, that is, preferably permanently and independently of switching operations taking place, or also in a reservoir that can be connected to the insulation space, for example when a switching operation is imminent.
- the insulation medium is used to isolate the insulation space and can also be used to extinguish an arc.
- a second switching unit and optionally a third switching unit are arranged in the insulation space in addition to the first switching unit, the first switching unit and the third switching unit each having at least one of a disconnector and an earthing switch , and wherein the second switching unit has a circuit breaker, such as in particular a vacuum switch.
- a circuit breaker such as in particular a vacuum switch.
- an earthing switch, a circuit breaker and a circuit breaker, in particular a vacuum switch are provided, wherein the earthing switch and the circuit breaker can be separated from one another or can be designed as a single switching unit.
- the vacuum switch can be advantageous.
- the circuit breaker in particular a vacuum switch, can be triggered independently of disconnectors and earthing switches, for example if faults, such as short circuits in the power supply system, occur and high short-circuit currents have to be interrupted.
- Disconnectors and earthing switches are safety-relevant switching devices in particular and are triggered comparatively less often, for example when maintenance work is to be carried out or when there is a change between busbars. Switching a disconnector and earthing switch is usually preceded by switching the circuit breaker.
- a disconnector and an earthing switch in the insulation space which are preferably both surrounded by the insulation medium.
- a vacuum switch is provided in the insulation space, the contact elements of the vacuum switch not being in contact with the insulation medium, but rather being present in a vacuum atmosphere. This shows that the main task of the insulation medium is not to prevent the formation of soot or to extinguish an electric arc.
- the isolation space is separated into a plurality of areas, for example by fluid-tight, e.g. the area of the isolation space surrounding the first switching unit and optionally the area of the isolation space surrounding the third switching unit, is filled with the isolation medium.
- the circuit breaker can in particular be a vacuum circuit breaker and serve to interrupt high currents, in particular short-circuit currents, whereas the disconnector and the earthing switch can serve to interrupt small currents, in particular commutation currents, charging currents and induced currents, with the isolation medium as Arc extinguishing medium is used for disconnectors and earthing switches.
- the circuit breaker such as the vacuum switch, can separate currents in a range from 25,000 A to 80,000 A or voltages in a range from 72,500 V to 800,000 V can be applied to it.
- a circuit breaker can also separate currents in a range from 0.1 A to 8,000 A, or voltages in a range from 10 V to 1,000 V can be applied to it.
- An earthing switch can also separate currents in a range from 0.4 A to 500 A, or voltages in a range from 500 V to 70,000 V can be applied to it.
- the use of the insulation medium described above in combination with a vacuum switch as the preferred circuit breaker can be an optimal solution for switching devices with a long service life, which is particularly true for use in high-voltage technology.
- the isolation medium is present in the isolation space with a pressure in a range from greater than or equal to 4 bar (absolute) to less than or equal to 10 bar (absolute).
- Fig. 1 schematically shows an embodiment of a high-voltage switch as an electrical energy transmission device according to the present invention.
- FIG. 1 a schematic example of a configuration of an electrical power transmission device in the form of a high-voltage switch 10 according to the invention is shown.
- the high-voltage switch 10 comprises a gastight To closed insulation space 12, in which an insulation medium 13 is deposited, as will be described in detail below.
- first arrangement 14 of first switching units 16 is arranged in the isolation space 12.
- second arrangement 18 composed of first switching units 16 is arranged in the insulation space 12.
- the first switching unit 16 is designed as a combined earthing switch and disconnector.
- a second Druckein unit 20 is also arranged in the isolation space 12.
- the second switching unit 20 comprises a circuit breaker and is preferably designed as a vacuum switch.
- the vacuum switch has a switch room with a separable contact, with an exemplary pressure of less than or equal to 10 6 bar being present in the switch room. It is shown that the isolation space 12 is separated into a plurality of areas 15 by gas-tight or gas-permeable partitions 11, all areas 15 of the isolation space 12 being filled with the isolation medium 13 in this embodiment.
- the first switching unit 16 merely represents an earthing switch and accordingly a third switching unit would be provided which comprises the isolating switch.
- the third switching unit could then be part of the first arrangement 14 and the second arrangement 18, or further arrangements not shown.
- control cabinet 22 by means of which the high-voltage switch 10 can be controlled and which sits on a console 24.
- a spring-loaded drive 26 with a power switch control drive is also provided.
- a voltage converter 28 and a high-speed earth electrode 30 are also shown.
- the Overpressure can be present, for example, in a range from greater than or equal to 4 bar to less than or equal to 10 bar. So with the entire insulation space 12 is gas-tight even with a corre sponding overpressure.
- the insulation medium 13 is designed in that it has the following components:
- the fluorine compound for example, fluoronitrile, such as such as perfluoronitriles, fluoroethers such as hydrofluoromonoethers, fluoroolefins such as hydrofluoroolefins, and fluoroketones such as perfluoroketones.
- fluoronitrile such as such as perfluoronitriles
- fluoroethers such as hydrofluoromonoethers
- fluoroolefins such as hydrofluoroolefins
- fluoroketones such as perfluoroketones.
- oxygen and, for example, other compounds are generally present in the insulation medium in a Ge content of ⁇ 0.5% by volume.
- the insulation medium 13 can consist of nitrogen and the at least one organofluorine compound, so that the insulation medium 13 is essentially free of at least one of water, carbon dioxide and sulfur hexafluoride.
- the insulation medium 13 has:
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Gas-Insulated Switchgears (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020202688.2A DE102020202688A1 (en) | 2020-03-03 | 2020-03-03 | Insulation medium for an electrical energy transmission device |
| PCT/EP2021/052914 WO2021175537A1 (en) | 2020-03-03 | 2021-02-08 | Insulation medium for an electric energy transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4078642A1 true EP4078642A1 (en) | 2022-10-26 |
Family
ID=74758736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21708119.9A Withdrawn EP4078642A1 (en) | 2020-03-03 | 2021-02-08 | Insulation medium for an electric energy transfer device |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20230110903A1 (en) |
| EP (1) | EP4078642A1 (en) |
| JP (1) | JP2023516043A (en) |
| KR (1) | KR20220144870A (en) |
| CN (1) | CN115244642A (en) |
| DE (1) | DE102020202688A1 (en) |
| WO (1) | WO2021175537A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024205069A1 (en) * | 2023-03-24 | 2024-10-03 | 엘에스전선 주식회사 | Insulating gas used for electrical insulation and electrical device using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2834818B1 (en) * | 2012-04-04 | 2018-06-06 | 3M Innovative Properties Company | Fluorinated nitriles as dielectric gases |
| US20180322981A1 (en) * | 2015-12-04 | 2018-11-08 | Solvay Sa | Methods for dielectrically insulating electrical active parts |
| DE102017220570A1 (en) * | 2017-11-17 | 2019-05-23 | Siemens Aktiengesellschaft | Insulation medium for an electric power transmission device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2869449B1 (en) * | 2004-04-21 | 2008-02-29 | Areva T & D Sa | ELECTRIC CUTTING EQUIPMENT IN MEDIUM OR HIGH VOLTAGE. |
| UA105668C2 (en) * | 2009-06-12 | 2014-06-10 | Абб Текнолоджи Аг | Dielectric insulation medium |
| DE202009018213U1 (en) * | 2009-06-12 | 2011-06-09 | Abb Technology Ag | Dielectric insulation medium |
| HUE035818T2 (en) | 2013-11-12 | 2018-08-28 | Abb Schweiz Ag | Water and contamination adsorber for co2 insulated electrical apparatus for the generation, transmission, distribution and/or usage of electrical energy |
| EP3104391A1 (en) * | 2015-06-10 | 2016-12-14 | General Electric Technology GmbH | Gas-insulated electric apparatus filled with a dielectric gas |
| DE102015218003A1 (en) * | 2015-09-18 | 2017-03-23 | Siemens Aktiengesellschaft | Medium or high voltage switchgear with a gas-tight insulation space |
| DE102018209180A1 (en) * | 2018-06-08 | 2019-12-12 | Siemens Aktiengesellschaft | Gas-insulated switchgear |
-
2020
- 2020-03-03 DE DE102020202688.2A patent/DE102020202688A1/en not_active Withdrawn
-
2021
- 2021-02-08 US US17/909,488 patent/US20230110903A1/en not_active Abandoned
- 2021-02-08 KR KR1020227033820A patent/KR20220144870A/en not_active Ceased
- 2021-02-08 EP EP21708119.9A patent/EP4078642A1/en not_active Withdrawn
- 2021-02-08 CN CN202180018168.3A patent/CN115244642A/en active Pending
- 2021-02-08 WO PCT/EP2021/052914 patent/WO2021175537A1/en not_active Ceased
- 2021-02-08 JP JP2022552404A patent/JP2023516043A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2834818B1 (en) * | 2012-04-04 | 2018-06-06 | 3M Innovative Properties Company | Fluorinated nitriles as dielectric gases |
| US20180322981A1 (en) * | 2015-12-04 | 2018-11-08 | Solvay Sa | Methods for dielectrically insulating electrical active parts |
| DE102017220570A1 (en) * | 2017-11-17 | 2019-05-23 | Siemens Aktiengesellschaft | Insulation medium for an electric power transmission device |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2021175537A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220144870A (en) | 2022-10-27 |
| US20230110903A1 (en) | 2023-04-13 |
| CN115244642A (en) | 2022-10-25 |
| WO2021175537A1 (en) | 2021-09-10 |
| DE102020202688A1 (en) | 2021-09-09 |
| JP2023516043A (en) | 2023-04-17 |
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