EP2122647A1 - Electric direct current network for water vessels and for offshore units having increased shut-off security - Google Patents
Electric direct current network for water vessels and for offshore units having increased shut-off securityInfo
- Publication number
- EP2122647A1 EP2122647A1 EP08701641A EP08701641A EP2122647A1 EP 2122647 A1 EP2122647 A1 EP 2122647A1 EP 08701641 A EP08701641 A EP 08701641A EP 08701641 A EP08701641 A EP 08701641A EP 2122647 A1 EP2122647 A1 EP 2122647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- switching
- pole
- switch
- commutation
- 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
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
- H01H33/60—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/08—Propulsion
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
- B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
Definitions
- the invention relates to an electrical DC network for watercraft, especially for underwater vehicles, as well as for offshore installations according to the preamble of claim 1;
- Such an electrical DC network is known for example from DE 10 2005 031 761 B3.
- an electrical DC network of a watercraft in particular an underwater vehicle, known in which between a DC power source, such as a battery or a fuel cell system, and an electrical load, such as a traction motor or a vehicle electrical system, a Stromabschalt adopted is connected, which comprises a formed as a vacuum switch circuit breaker and a commutation device.
- a DC power source such as a battery or a fuel cell system
- an electrical load such as a traction motor or a vehicle electrical system
- the commutation device acts on the vacuum switch immediately after the generation of the arc with an oppositely directed current which compensates for the current flowing in the arc or at least reduces it to such an extent that the arc comes to an end.
- the commutation device has a commutation circuit lying parallel to the vacuum switch and comprising a switch and a charge accumulator, for example a capacitor.
- a control device Via a control device, it is ensured that the switch is activated immediately after the opening of the vacuum switch in such a way that the charge accumulator runs parallel to the vacuum. circuit breaker and polarity reversed in order to extinguish the arc resulting in the switch when opening.
- a charge generator such as an electric coil, may be provided, which is controlled by the control device so that it generates a compensation current after opening the vacuum switch, which extinguishes the arc resulting from the opening of the vacuum switch.
- the turn-off device for at least one of the two switching poles has a commutation device for deleting an arc generated in this switching pole, because by switching off the current in this one switching pole is normally de-energized due to the current zero crossing of the other switching pole momentarily, so that he also experiences a current zero crossing, which leads to a deletion of the arc in this switching pole.
- the turn-off device can also have its own commutation device for each of the two switching poles.
- the turn-off device can also have its own commutation device for each of the two switching poles.
- the vacuum switch to a further, third switching pole, which is mechanically coupled to the first and the second switching pole and which is connected in series with the second switching pole in the current branch from the negative pole of the DC power source to the consumer.
- the second switching pole and the third switching pole each have their own commutation. It is sufficient if the second switching pole and the third switching pole have a common commutation device, i. the commutation device is connected in parallel with the series connection of the two switching poles. It is also sufficient if the second switching pole has a commutation device, whereas the third switching pole has no commutation device, i. only to the second switching pole is connected in parallel a commutation device. If this commutation extinguishes the arc in the second switching pole, there is also an interruption of the current flow and thus a deletion of the arc in the third switching pole.
- the contact gap with an open switching pole between 1.5 mm and 15 mm, preferably between 2 and 5 mm.
- a particularly stable magnetic field in the switching pole and thus a particularly good breaking capacity can be achieved.
- a further increase in the switch-off safety is possible in that a commutation pulse is triggered in a commutation device only at a predetermined minimum contact gap in the switching pole (eg minimum contact gap of 3 mm). This can be made possible, for example, by a delay of the triggering pulse of the commutation device by a time corresponding to the vacuum switch.
- the total inductance of a commutation circuit of a commutation device is preferably at most 0.5 ⁇ H.
- a commutation pulse is triggered only after a minimum arc duration has expired. This can ensure that the arc is sufficiently diffused and thus a safe shutdown is possible.
- transient recovery voltages at the switching pole can be limited to values below 500 V / ⁇ s.
- the switch-off device preferably has a device for measuring tripping characteristics in the DC network and for generating a tripping pulse for a mechanical opening mechanism of the vacuum switch and for the commutation device from one or more of these tripping characteristics.
- the shutdown device has at least one overcurrent release for the vacuum interrupter, wherein as overcurrent release both instantaneous overcurrent release (ie delay of the overcurrent trip only by the proper time of the switch) and delayed overcurrent release (ie delay of the overcurrent trip through the proper time of the switch and through an adjustable in the overcurrent release Time) can be used.
- overcurrent release both instantaneous overcurrent release (ie delay of the overcurrent trip only by the proper time of the switch) and delayed overcurrent release (ie delay of the overcurrent trip through the proper time of the switch and through an adjustable in the overcurrent release Time) can be used.
- FIG. 1 shows a circuit diagram of a DC network with a turn-off device with a switched between a DC power source and a consumer three-pole vacuum switch and two commutation
- Figure 2 shows an advantageous embodiment of a commutation
- FIG. 3 shows a side view of a switch-off device
- FIG. 4 shows a front view of a switch-off device
- a DC power supply 1 shown in FIG. 1 in a particularly simplified representation has a DC power source 2, an electrical load 3 and a disconnection device 4 for disconnecting a current flowing between the DC power source 2 and the load 3.
- the turn-off device 4 has a vacuum switch 5 connected between the DC power source 2 and the load 3 and having three switching poles (i.e., three switching paths) 5a, 5b, 5c.
- the switching poles are mechanically coupled to each other and have a common mechanical drive, i. An opening or closing of the three switching poles always takes place simultaneously.
- the switching pole 5a is connected in a current branch 6, which connects a positive pole of the DC power source 2 to the consumer 3.
- the switching poles 5b and 5c are in series in one
- the turn-off device 4 has a first commutation device 8 which is connected in parallel with the switching pole 5a and serves to extinguish arcs in the switching pole 5a by applying a countercurrent to the switching pole 5a. Furthermore, the turn-off device 4 has a second commutation device 9, which is connected in parallel with the series connection of the two switching poles 5b and 5c.
- the turn-off device 4 may also have only the commutation device 8 or only the commutation device 9.
- a measuring device 19 serves to measure tripping characteristics in the DC network 1 and to generate a tripping pulse for a mechanical opening mechanism 21 of FIG
- Vacuum switch 5 and for the commutation 8, 9 from one or more of these tripping characteristics are connected via control lines 20 to the opening mechanism 21 and the commutation devices 8, 9.
- the turn-off device 4 shown with two commutation devices 8, 9 and a total of three switched in series and mechanically coupled to each other switching poles (or switching sections) 5a, 5b, 5c is characterized by a particularly high breaking capacity and a particularly high shutdown safety with great compactness. Due to the two commutation devices 8, 9 even a shutdown of a double ground fault in the DC network 1 is possible.
- Each of the commutation 8, 9 here preferably - as shown in Figure 2 - designed as a pulse circuit 10 Kommut réellesstrom Vietnamese on a high-power semiconductor switch 11 for high pulse currents, such as a thyristor, a surge capacitor 12, a charging device 13 for charging the capacitor 12 and a Ignition device 14 for ignition of the high-power semiconductor switch 11 comprises.
- the vacuum circuit breaker 5 is arranged above the commutation device 8 or 9, which is essentially formed by the high-power thyristor 11 and the capacitor 12.
- the vacuum interrupters 15 of the vacuum circuit breaker 5 are connected via insulators 16 to a housing of the switch drive 17.
- switching tubes 15 and insulators 16 are used for low nominal voltages, which allow a much more compact and lighter design.
- FIG. 4 shows a front view of the advantageous embodiment of the shut-off device 4 according to FIG. 1, shown in side view in FIG. 1.
- the three vacuum interrupters 15 of the three poles 5a, 5b, 5c of the switch 5 are - as already shown in FIG. 3 - via the commutation devices 8 , 9 arranged and connected via insulators with the housing of the switch drive 17. The current paths are not shown for reasons of clarity.
- the commutation device 8 is connected in parallel with the switching pole 5a and the commutation device 9 in parallel with the series connection of the switching poles 5b and 5c.
- the commutation devices 8, 9 each have a high-performance thyristor 11 and a capacitor
- the shutdown device is further characterized by the following features: Limiting the maximum rate of change of current through the vacuum interrupters to less than 2000 A / ⁇ s during the commutation process,
- transient recovery voltage transient voltage after a short circuit current interruption
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710004528 DE102007004528B3 (en) | 2007-01-24 | 2007-01-24 | Electric DC network for watercraft and offshore installations with increased shutdown safety |
PCT/EP2008/050759 WO2008090175A1 (en) | 2007-01-24 | 2008-01-23 | Electric direct current network for water vessels and for offshore units having increased shut-off security |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2122647A1 true EP2122647A1 (en) | 2009-11-25 |
EP2122647B1 EP2122647B1 (en) | 2014-11-26 |
Family
ID=39316425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08701641.6A Not-in-force EP2122647B1 (en) | 2007-01-24 | 2008-01-23 | Electric direct current network for water vessels and for offshore units having increased shut-off security |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2122647B1 (en) |
KR (1) | KR101140428B1 (en) |
DE (1) | DE102007004528B3 (en) |
ES (1) | ES2527061T3 (en) |
WO (1) | WO2008090175A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010052136A1 (en) | 2010-11-22 | 2012-05-24 | Siemens Aktiengesellschaft | Circuit arrangements for electronically controlled DC networks |
KR102615108B1 (en) * | 2016-12-21 | 2023-12-15 | 한국전기연구원 | Device and method for interrupting dc current by injection of reverse current using vacuum gap switch |
CN107867384B (en) * | 2017-10-28 | 2019-07-26 | 中车永济电机有限公司 | 5000 tons of inland water transport marine electric propulsion systems |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3548256A (en) * | 1968-07-05 | 1970-12-15 | Gen Electric | High voltage d-c circuit breaker |
JP3114328B2 (en) * | 1992-02-20 | 2000-12-04 | 株式会社日立製作所 | DC circuit breaker |
DE19525288C2 (en) * | 1995-07-03 | 2002-08-01 | Siemens Ag | Multipole vacuum switch with parallel poles |
JP4403782B2 (en) | 2003-11-17 | 2010-01-27 | 株式会社日立製作所 | Vacuum switchgear |
DE102005031761B3 (en) * | 2005-07-07 | 2006-08-24 | Howaldtswerke-Deutsche Werft Gmbh | Watercraft e.g. submarine boat, has circuit breaker provided between power source and electrical load, where circuit breaker is formed by vacuum switch having commutation device arranged outside of cylindrical housing |
-
2007
- 2007-01-24 DE DE200710004528 patent/DE102007004528B3/en not_active Expired - Fee Related
-
2008
- 2008-01-23 KR KR1020097017616A patent/KR101140428B1/en not_active IP Right Cessation
- 2008-01-23 WO PCT/EP2008/050759 patent/WO2008090175A1/en active Application Filing
- 2008-01-23 ES ES08701641.6T patent/ES2527061T3/en active Active
- 2008-01-23 EP EP08701641.6A patent/EP2122647B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008090175A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2122647B1 (en) | 2014-11-26 |
KR20090106627A (en) | 2009-10-09 |
WO2008090175A1 (en) | 2008-07-31 |
DE102007004528B3 (en) | 2008-08-07 |
ES2527061T3 (en) | 2015-01-20 |
KR101140428B1 (en) | 2012-04-30 |
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