EP2936530A1 - Leistungsschalter - Google Patents
LeistungsschalterInfo
- Publication number
- EP2936530A1 EP2936530A1 EP13823936.3A EP13823936A EP2936530A1 EP 2936530 A1 EP2936530 A1 EP 2936530A1 EP 13823936 A EP13823936 A EP 13823936A EP 2936530 A1 EP2936530 A1 EP 2936530A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrodes
- circuit breaker
- switching
- switching path
- sub
- 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 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 5
- 239000012212 insulator Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002250 progressing effect Effects 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
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
-
- 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
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- 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
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H33/10—Metal parts
-
- 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
- H01H33/16—Impedances connected with contacts
- H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
-
- 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
- H01H33/20—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
-
- 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
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
-
- 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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6647—Contacts; Arc-extinguishing means, e.g. arcing rings having fixed middle contact and two movable contacts
Definitions
- the present invention relates to a circuit breaker which is suitable for switching electrical voltages and / or electrical currents and powers.
- a circuit breaker contains two electrodes, to which in operation one pole of an electrical power to be switched is applied in each case.
- one pole of an electrical power to be switched is applied in each case.
- the insulating gas SF 6 In order to ensure the extinction of such arcs as far as possible, in many of the known high-voltage circuit breakers, the insulating gas SF 6
- Atmosphere can escape.
- vacuum switches have been developed for switching high voltages. To reduce the occurrence of arcs in vacuum switches, these are usually used in
- HVDC high-voltage direct current
- the European Patent EP 0 556 616 B1 - or its German translation DE 693 02 716 T2 - introduces a DC breaker arrangement which closes a commutating switch after interrupting a vacuum switch and converts an arc direct current by means of commutation into an alternating waveform to the interruption complete. This is intended to reliably interrupt a DC current to prevent an escalation of a malfunction.
- the circuit breaker according to the invention has two electrodes, to each of which a pole of an electrical voltage can be connected, which is to be switched or disconnected. These electrodes will be below as well
- the switch according to the invention is in principle suitable for switching voltages with arbitrary values. In this case, the generation of arcs should be prevented or their presence be terminated as quickly as possible during the switching process. Therefore, the switch according to the invention is particularly suitable for all applications in which such arcs are particularly harmful, such as in vehicles with electric drive and / or internal combustion engines and when switching high voltages.
- high voltage is understood to mean a voltage which may have a value of approx. 50 - 500 kilovolts or even more.
- the circuit breaker offers particular advantages as part of a system for transmission of ultra-high voltage alternating current (AC) or high voltage direct current (HVDC). For the switching process, the main electrodes must be brought together or
- both main electrodes are moved simultaneously or in succession.
- This switching movement takes place along a switching path. Usually this runs straight and perpendicular to the button of the stationary main electrode. However, any other form which is advantageous for mechanical and / or electrical reasons is also conceivable.
- the present invention is characterized in that at least one secondary electrode is present.
- This sub-electrode protrudes into the area near the switching path. This causes that in the separation process, first, a main arc between the two main electrodes is formed and with further progressing distance of the main electrodes to each other more arcs arise between the main electrodes and the secondary electrode. These further arcs are thus connected in parallel to the original main arc and cause it to extinguish much earlier than in previously known circuit breakers.
- the minimum distance between the switching path and the sub-electrode is less than 10 mm, with values between about 0.5 to 1 mm having proven particularly useful.
- the invention is based on the finding that the presence of the
- Arcs is unstable and follows statistical laws. If, instead of a main arc, several individual arcs occur, which are quasi connected in series, there is a much greater probability that one of these individual arcs will extinguish. When that happens, more of these single arcs will quickly go out, eventually wiping out the entire arc chain. The creation of such an arc chain instead of a single main arc, the presence of arcs during the switching process so finished faster and thus the
- the presence of the sub-electrodes according to the invention is basically possible in a circuit breaker containing a gas, such as the insulating gas SF 6 .
- a gas pressure is in the range of 10 ⁇ 4 to 10 "8 mbar, usually values in the range of 10 ⁇ 5 to 10" 7 mbar are particularly preferred.
- the secondary electrode (or more) can be designed in various ways. In order to ensure the highest possible operational reliability, it has been proven to make the secondary electrode annular or planar, with an opening is provided through which the switching path passes.
- the secondary electrode (or more) has a contour, whereby it is thinner in the region of the switching path, as on the side facing away from the switching path.
- a contour can be realized for example by a triangular-shaped course (see Fig. 5).
- the secondary electrode each has a rounded course (see Fig. 4), which can be described by a small radius (r) or a larger radius (R), where r ⁇ R is.
- Fig. 4 is an enlarged view of the sub-electrode 30a of Fig. 2 Fig. 5 sub-electrodes with triangular contour
- Fig. 6 shows another embodiment of the circuit breaker with wiring.
- circuit breaker according to the invention is suitable for the switching of electrical voltages with arbitrary values.
- Fig. 1 shows a symbolic representation of a preferred circuit breaker 10, which is suitable to switch DC voltages up to 100 kV and more. It is preferably designed as a vacuum switch, in which there is usually a pressure of about 10 ⁇ 6 mbar.
- the preferred embodiment is designed substantially circular or cylindrical symmetry. That is, the housing of the circuit breaker 10 includes a substantially cylindrical insulator 12 and an upper end plate 14 and a lower end plate 16, which are each nearly disc-shaped.
- the circuit breaker 10 further includes an upper
- Main electrode 18 having an upper shaft 20 and a lower main electrode 22 with a lower shaft 24.
- About the main electrodes 8, 22 may be a
- Both shafts 20, 24 are electrically conductive and connected respectively to their associated main electrode 18 and 22 both mechanically and electrically conductive.
- the upper shaft 20 is fixed to the upper end plate 14 so that the upper main electrode 18 within the circuit breaker 10 is almost stationary.
- the lower shaft 24 can be through an opening, not shown here within the lower End plate 16 along the arrow 26 to move back and forth vertically.
- the lower main electrode 22 vertically, that is, up and down, are moved along a switching path, which is indicated here by the dashed lines sl and sr.
- Via a lower connection port B the second pole of the high voltage to be switched can be applied.
- This port B is electrically connected to a sliding contact 28, which in turn makes contact between the electrically conductive lower shaft 24 and thus also to the lower
- Main electrode 22 allows.
- the circuit breaker 10 further includes five sub-electrodes 30a, ..., 30e, which are each formed almost disc-shaped, and which are each held by one of the holders 31a, ..., 31 e.
- the brackets 31 are
- brackets 31 are formed as webs or the like.
- the auxiliary electrons 30 each have an opening 32a,..., 32e in the central region, which are designed and arranged such that the movable lower main electrode 22 can be moved therethrough.
- the openings 32 are symmetrical to the positions of the lower main electrode 22 along its vertical switching path. If this is in the middle of one of the
- Openings 32 is located, there is a minimum distance d between the exterior of the main electrode 22 and the interior of such opening 32, as shown in Fig. 1.
- This distance d between the switching path sr and the sub-electrode 30 is less than 10 mm, with values between 0.5 and 1 mm having proven particularly useful.
- the uppermost sub-electrode 30a is arranged such that the upper main electrode 18 is in the region of the opening 32a. Such embodiments are shown for example in FIGS. 3 and 4
- FIG. 2 shows a cross-sectional view of the preferred circuit breaker 10, which-as already mentioned above-is substantially circular or cylindrically symmetrical. For clarity, were by the side electrodes 30a, ..., 30e only three are drawn. Fig. 2 also shows other possible modifications.
- the insulator 12 has first regions 12a, which are electrically conductive, and second regions 12b, which are electrically insulating.
- the first regions 12a are preferably made of metal.
- the second portions 12b are made of ordinary material such as ceramic or the like.
- the upper main electrode 18 is made quite large, so that its lateral dimension is larger than that of the lower main electrode 22.
- the power switch 10 here has a shielding plate 33. Together with the brackets 31a and 31e, which are also preferably designed as sheets and thus also function as shielding plates, so the dielectric surface of the insulators 12 is shielded during the emergence and presence of an arc against thereby occurring flows of metal particles.
- an electromagnet 34, a permanent magnet 36 and a spring 38 are also shown, with appropriate circuitry and control by suitable means (not shown here) a vertical actuation of the lower shaft 24 - and thus also the lower main electrode 22 - allow and so can cause a desired switching operation by an interconnection or separation of the two main electrodes 18, 22.
- Electromagnet 34 and the spring 38 preferably below the lower
- End plate 16 and mounted outside the vacuum chamber.
- the special feature of the present invention are those in the
- Embodiments shown auxiliary electrodes 30. These cause that
- Fig. 3 consists of the individual representations 3a ... 3h.
- the side electrodes 30a, ..., 30e are shown as well as various arcs that may arise during such a switching operation.
- the uppermost sub-electrode 30a is at substantially the same height as the first one
- Fig. 3b shows a situation in which the lower main electrode 22 has moved further down during the switching operation. The distance between the
- the lower main electrode 22 is at the level of the sub-electrode 30d and just below.
- the arc 132 is extinguished.
- an arc 150 occurs (between the sub-electrodes 30c and 30d) and an arc 152 (between the sub-electrode 30d and the lower main electrode 22).
- the lower main electrode 22 is at the level of the auxiliary electrode 30e or just below.
- the arc 152 is extinguished.
- an arc 170 occurs (between the sub-electrodes 30d and 30e) and an arc 172 (between the sub-electrode 30e and the lower main electrode 22).
- the arcs 112, 114, 130, 150, 170 and 172 present during the switching operation and in particular also in the position according to FIG. 3h have arisen due to the particular design and positioning of the auxiliary electrodes 30 relative to one another and with respect to the position of the upper main electrode 18 and the switching path of the lower main electrode 22. These arcs are quasi connected in series. This means that if one of these arcs disappears due to the statistical laws, the entire spark gap is interrupted. This ensures that arcs extinguish much earlier in the inventive high-voltage circuit breaker than in previously known
- the side electrodes 30 in the outer region that is to say on the side remote from the switching path sl, have a very small distance of a few millimeters from one another, as a result of which the arcs 114, 130, 150 and 170 (see FIG ) can arise;
- the side electrodes 30 in the region of the switching path sl, sr have a significantly greater distance from each other than to the
- Fig. 6 shows symbolically a further embodiment of the
- Circuit breaker 10 according to the invention.
- the special feature of this is the
- the electronic circuit 50 which consists of a plurality of ohmic resistors 52 and a plurality of voltage-dependent resistors 54, which are also called varistors in the following.
- the resistors 52 and the varistors 54 are each connected in series.
- the resistors 52 each have a value greater than 100 kO. In this case, a range between 100 kD and 1 ⁇ is particularly advantageous.
- the varistors are designed in the preferred embodiment to have a limiting voltage (threshold voltage) of about 1 kV.
- the preferred embodiment of the circuit breaker 10 is designed so that voltages in the range of about 200 kV can be switched. If 5 sub-electrodes 30a, ..., 30e are present (as also shown), four gaps result between these sub-electrodes 30a-30e. To be optimal
- Varistors 54 arranged so as to allow the desired limiting voltages. By the resistors 52, a good voltage distribution between the sub-electrodes 30 is ensured.
- the electronic circuit 50 is connected as follows in this embodiment.
- the brackets 31 are here each designed as a sheet metal, so that these holding plates each also function as a shielding plate.
- the first retaining plate 31a is electrically connected to the upper main electrode 18 via the upper shaft 20.
- Holding plate 31 a and the second holding plate 31 b are connected a series of varistors 54, to which a series of resistors 52 are connected in parallel.
- both six resistors 52 and six varistors 54 are shown between the first holding plate 31 a and the second holding plate 31 b.
- Also between the other adjacent retaining plates 31 b-31 c, 31 c-31 d and 31 d-31 e six resistors 52 and six varistors 54 are shown. It should be noted that this number is only an example and may be different between adjacent retaining plates 31. This also means that the number of resistors 52 may be different from the number of varistors 54.
- the last retaining plate 31 e is also electrically connected via a second electrical conductor 58 via the lower shaft 24 to the lower main electrode 22.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012025115.7A DE102012025115A1 (de) | 2012-12-21 | 2012-12-21 | Leistungsschalter |
PCT/EP2013/003890 WO2014095079A1 (de) | 2012-12-21 | 2013-12-20 | Leistungsschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2936530A1 true EP2936530A1 (de) | 2015-10-28 |
EP2936530B1 EP2936530B1 (de) | 2017-02-22 |
Family
ID=49999863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13823936.3A Not-in-force EP2936530B1 (de) | 2012-12-21 | 2013-12-20 | Leistungsschalter |
Country Status (4)
Country | Link |
---|---|
US (1) | US9543086B2 (de) |
EP (1) | EP2936530B1 (de) |
DE (1) | DE102012025115A1 (de) |
WO (1) | WO2014095079A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102442624B1 (ko) * | 2014-11-11 | 2022-09-13 | 삼성전자주식회사 | 반도체 디바이스 |
FR3039924B1 (fr) * | 2015-08-07 | 2019-05-10 | Supergrid Institute | Appareil de coupure mecanique d'un circuit electrique |
DE102016212335B4 (de) | 2016-07-06 | 2019-08-29 | Siemens Aktiengesellschaft | Schaltgerät mit Lichtbogenlöschvorrichtung sowie Verfahren zum Betreiben eines solchen Schaltgeräts |
CN111554541B (zh) * | 2020-06-29 | 2022-05-27 | 广东电网有限责任公司东莞供电局 | 一种真空断路器 |
CN114256010B (zh) * | 2021-11-15 | 2024-04-09 | 双杰电气合肥有限公司 | 常压密封开关用极柱及常压密封开关 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185797A (en) * | 1962-07-17 | 1965-05-25 | Gen Electric | Vacuum-type circuit interrupter with improved arc splitting means |
CH566070A5 (de) * | 1974-06-13 | 1975-08-29 | Sprecher & Schuh Ag | |
CH598691A5 (de) * | 1976-06-21 | 1978-05-12 | Bbc Brown Boveri & Cie | |
US4267415A (en) * | 1977-10-06 | 1981-05-12 | Electric Power Research Institute | Current limiter vacuum envelope |
DE2812987A1 (de) * | 1978-03-23 | 1979-10-04 | Tokyo Shibaura Electric Co | Vakuumunterbrecher |
US4295021A (en) * | 1979-01-19 | 1981-10-13 | Asinovsky Erik I | Electromagnetic arc extinction apparatus for switchgear |
US4346273A (en) * | 1979-12-10 | 1982-08-24 | Westinghouse Electric Corp. | Circuit-interrupter having a high-frequency transverse magnetic field to assist in arc interruption |
JPS58181222A (ja) * | 1982-04-19 | 1983-10-22 | 株式会社東芝 | 直流しや断装置 |
JPS63314728A (ja) * | 1987-06-17 | 1988-12-22 | Mitsubishi Electric Corp | 回路遮断器 |
JPH03230436A (ja) * | 1990-02-06 | 1991-10-14 | Toshiba Corp | 真空バルブ |
JP3114328B2 (ja) | 1992-02-20 | 2000-12-04 | 株式会社日立製作所 | 直流遮断器 |
FR2721434B1 (fr) * | 1994-06-20 | 1996-08-02 | Schneider Electric Sa | Ampoule sous vide, notamment pour disjoncteur ou interrupteur électrique moyenne tension et interrupteur intégrant une telle ampoule. |
JP2000021276A (ja) * | 1998-07-07 | 2000-01-21 | Toshiba Corp | 真空遮断器 |
US8884176B2 (en) | 2009-10-27 | 2014-11-11 | Abb Technology Ag | HVDC breaker and control apparatus for controlling an HVDC breaker |
-
2012
- 2012-12-21 DE DE102012025115.7A patent/DE102012025115A1/de not_active Withdrawn
-
2013
- 2013-12-20 US US14/652,971 patent/US9543086B2/en active Active
- 2013-12-20 WO PCT/EP2013/003890 patent/WO2014095079A1/de active Application Filing
- 2013-12-20 EP EP13823936.3A patent/EP2936530B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2014095079A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2936530B1 (de) | 2017-02-22 |
US9543086B2 (en) | 2017-01-10 |
DE102012025115A1 (de) | 2014-06-26 |
WO2014095079A1 (de) | 2014-06-26 |
US20150332878A1 (en) | 2015-11-19 |
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