EP3815121A1 - Anordnung mit hochspannungsschaltern - Google Patents
Anordnung mit hochspannungsschalternInfo
- Publication number
- EP3815121A1 EP3815121A1 EP18769055.7A EP18769055A EP3815121A1 EP 3815121 A1 EP3815121 A1 EP 3815121A1 EP 18769055 A EP18769055 A EP 18769055A EP 3815121 A1 EP3815121 A1 EP 3815121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistor
- voltage
- voltage switch
- capacitor
- switch
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims description 44
- 230000003068 static effect Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 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
- H01H33/59—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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
-
- 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
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
- H01H2033/146—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc using capacitors, e.g. for the voltage division over the different switches
-
- 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
- H01H9/42—Impedances connected with contacts
-
- 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
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
Definitions
- the invention relates to an arrangement with a first
- High voltage switches which are electrically connected in series.
- the invention further relates to a method for switching off a direct current by means of a first one
- the invention has for its object to provide an arrangement and a method with which the applied to the individual high-voltage switches of the series circuit
- Voltage can be influenced in a targeted manner.
- High voltage switch and a second High-voltage switches which are electrically connected in series (ie in a series connection, in a high-voltage switch series connection), the first
- High-voltage switch is connected to a first resistor and a first capacitor and the second
- High-voltage switch is connected to a second resistor and a second capacitor.
- Voltage can be influenced or set in a targeted manner. It has been found that wiring with only one capacitor is often not sufficient to influence the voltage sufficiently. With a resistive-capacitive circuit, significantly better results were achieved.
- the arrangement can be designed such that the first high-voltage switch has a (first) series circuit comprising the first resistor and the first capacitor
- the high-voltage switches can each be configured as a gas-insulated switch or as a vacuum-insulated switch. Both with gas-insulated
- High-voltage switches can (by means of the first resistor and the first capacitor and the second resistor and the second capacitor) advantageously over the Switches applied voltage are influenced or set.
- the high-voltage switches can also each be designed as a vacuum interrupter
- Vacuum interrupters are often electrically connected in series when large
- Vacuum interrupter is subject to a saturation effect. This means that if a further increase in the dielectric strength is desired, a point is reached at which the dielectric strength of the vacuum switch tube can no longer be achieved with reasonable effort
- Vacuum interrupter can enlarge. A further increase in the dielectric strength of the vacuum interrupter then advantageously takes place through the series connection of several vacuum interrupters. A series connection of
- Vacuum interrupters are also advantageous because, with increasing voltage applied to a vacuum interrupter, there is an increased emission of ionizing radiation
- AMF axial magnetic field
- the arrangement can be designed in such a way that the resistance and the resistance in at least one of the series circuits
- the arrangement can also be designed so that the
- the arrangement can be configured such that the first high-voltage switch has a third resistor
- the arrangement can also be designed such that the third resistor and the fourth resistor each have a larger (ohmic) resistance value than the first resistor and / or the second resistor.
- the third resistor and the fourth resistor can each have a resistance value greater than 1 MQ. With such a large resistance it is advantageous that this
- Direct currents are advantageous because an arrangement with high-voltage switches connected in series is advantageous.
- This DC circuit breaker can be designed to flow into the current path of the current flowing in the opposite direction to the DC current to be switched off (countercurrent)
- Such a DC circuit breaker is also called
- a method for switching off a direct current (in particular in the case of high-voltage direct current transmission) is disclosed by means of a series connection a first high voltage switch and a second
- High-voltage switch and the second high-voltage switch is divided by means of a series circuit comprising a first resistor and a first capacitor, which is connected in parallel to the first high-voltage switch, and by means of a series circuit of a second resistor and a second capacitor, which is the second
- High voltage switch is connected in parallel.
- the procedure can also be such that
- High-voltage switch is divided by means of a third resistor, the first high-voltage switch is connected in parallel, and by means of a fourth resistor, the second high-voltage switch
- DC voltage applied to high-voltage switches can be specifically distributed to the individual high-voltage switches.
- the procedure can also be such that
- the procedure can also be such that
- the high-voltage switches are each gas-insulated
- Switches or a vacuum-insulated switch are Switches or a vacuum-insulated switch.
- the procedure can also be such that
- the high-voltage switches are each a vacuum interrupter, in particular a vacuum interrupter with an AMF contact system or a plate-shaped contact system.
- the procedure can be such that
- the resistor and the capacitor are selected so that for the
- the procedure can also be such that
- the arrangement, the DC circuit breaker and the method have the same or similar
- Figure 1 shows a first embodiment of a
- Figure 2 shows a second embodiment of a
- FIG 3 shows an exemplary process flow for
- FIG. 1 shows an embodiment of an arrangement 1 with a first high-voltage switch S1 and a second
- High-voltage switch is understood here to be an electrical switch for voltages above 1 kV, in particular for voltages above 5 kV.
- the first high voltage switch S1 and the second high voltage switch S2 are under the formation of one
- Connection point 4 electrically connected in row 2
- High-voltage switch S1 a first connection 8 of the arrangement 1 is arranged; at the connection point 4
- a second connection 12 of the arrangement 1 is arranged opposite the side of the second high-voltage switch S2.
- the first connection 8 and the second connection 12 form the connections of the series connection 2 of the high-voltage switches S1 and S2.
- High-voltage switch S2 wired with a resistor and a capacitor.
- the first resistor RI and the first capacitor CI are arranged in particular in a first electrical series circuit 16.
- This first series circuit 16 is connected in parallel to the first high-voltage switch S1.
- the first series circuit 16 forms an electrical parallel branch 16 to the first high-voltage switch S1.
- the second resistor R2 and the second capacitor C2 are arranged in particular in a second electrical series circuit 20.
- This second electrical series circuit 20 is connected in parallel to the second high-voltage switch S2.
- the second Series connection 20 forms an electrical parallel branch 20 to the second high-voltage switch S2.
- the first high-voltage switch S1 and the second high-voltage switch S2 are each designed as a vacuum-insulated switch.
- the first high-voltage switch S1 and the second high-voltage switch S2 can each be a vacuum interrupter, preferably a vacuum interrupter with an AMF contact system or a plate-shaped contact system.
- other switches can also be used, in particular gas-insulated ones
- Ri is the ohmic resistance value of the
- Resistor component RI in ohms and Ci the capacitance of the capacitor CI in F.
- the second resistor R2 and the second capacitor C2 are the same
- first electrical series circuit 16 and the second electrical series circuit 20 in particular changing voltages (for example voltages with high dynamics) can be divided between the first high-voltage switch S1 and the second high-voltage switch S2.
- changing voltages for example voltages with high dynamics
- High voltage switch may be present) is however not satisfactorily possible by means of the first electrical series circuit 16 and the second electrical series circuit 20.
- the arrangement shown in FIG. 2 can advantageously be used to divide such a (static) DC voltage between the two high-voltage switches.
- FIG. 2 shows a further arrangement 200 with the first high-voltage switch S1 and the second
- This arrangement 200 differs from arrangement 1 in FIG. 1 in that a third resistor R3 is connected in parallel with the first electrical series circuit 16 and a fourth in parallel with the second electrical series circuit 20
- Resistor R3 is therefore parallel to the first one
- High-voltage switch S1 switched and forms a further parallel branch 205 to the first high-voltage switch S1.
- the fourth electrical resistor R4 is therefore connected in parallel to the second high-voltage switch S2 and forms a further parallel branch 210 to the second
- High voltage switch S2 In the case of a (static) DC voltage applied to the arrangement 200, the first is
- the third resistor R3 and the fourth resistor R4 are advantageously each designed with higher impedance than the first resistor RI and / or the second resistor R2. This advantageously flows through the third
- Resistor R3 and the fourth resistor R4 (in the case of a static DC voltage applied to the arrangement 200) only a relatively small current. As a result, only small electrical losses occur.
- the third resistor R3 and / or the fourth resistor R4 advantageously each have a resistance value of at least 1 MQ. Electrical resistances between 1 MQ and for example 10 MQ are conceivable here.
- FIG. 1 While the arrangement 1 shown in FIG. 1 can preferably be used to divide changing voltages between the two high-voltage switches S1 and S2, the arrangement 200 according to FIG.
- statically applied voltages in particular direct voltages
- FIG. 3 shows an exemplary sequence of a method 300 for switching off a direct current.
- High voltage switches S1 and S2 open. An arc then arises between the switching contacts of the open high-voltage switch / the open high-voltage switch.
- a third method step 330 one is made of the first in this disconnection process on the series circuit
- High-voltage switch S1 and second high-voltage switch S2 present (dynamically) changing voltage on the first high-voltage switch S1 and the second
- step 340 after the changing voltage on the
- the current zero crossing can be generated with a current rate of change between 100 and 500 A per ys. Because of this high
- Switched high-voltage switch The total voltage applied to the high-voltage switches connected in series can be specifically distributed to the individual high-voltage switches. This can reduce the voltage load
- dielectric load of the individual high-voltage switches can be limited.
- Vacuum interrupter each shows a different electrical behavior.
- Vacuum switching tube which is driven by the transiently recurring voltage (recurring voltage).
- the behavior of the vacuum interrupter is predominantly resistive, i.e. the vacuum isolating section behaves electrically like a time-varying ohmic resistance R (t) that changes from highly conductive values (a few ohms) to highly resistive values (corresponding to the dielectric capacity of the switching path) increases.
- the voltage can be divided effectively and reliably between the individual vacuum interrupters using the first electrical series circuit 16 and second electrical series circuit 20 described. For example, this is not the case when trying to tension only with a first
- Capacitor CI and a second capacitor C2 (under
- Vacuum interrupters with pure capacities are therefore disclosed using an R-C combination.
- the resistors RI and R2 stabilize the voltage distribution in the post-arc phase.
- the capacitance of the capacitors CI or C2 is chosen so large that there is no significant charging of the capacitors CI in the phase of the post-arc current (post-arc phase)
- the post-arc phase has a duration of approx. 1 - 40 ys depending on the parameters of the switch-off process.
- DC circuit breakers this arrangement and the method can be used with advantage, because here (unlike AC circuit breakers which are operated at frequencies of 50 Hz or 60 Hz) high Current change rates can occur.
- Such DC circuit breakers can be used in particular for high-voltage DC transmission.
- the arrangement and the method can also
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2018/072896 WO2020038587A1 (de) | 2018-08-24 | 2018-08-24 | Anordnung mit hochspannungsschaltern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3815121A1 true EP3815121A1 (de) | 2021-05-05 |
Family
ID=63557405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18769055.7A Pending EP3815121A1 (de) | 2018-08-24 | 2018-08-24 | Anordnung mit hochspannungsschaltern |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3815121A1 (de) |
| WO (1) | WO2020038587A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305107A (en) * | 1977-09-02 | 1981-12-08 | Tokyo Shibaura Denki Kabushiki Kaisha | DC Interrupting apparatus |
| DE102010052136A1 (de) | 2010-11-22 | 2012-05-24 | Siemens Aktiengesellschaft | Schaltungsanordnungen für elektronisch gesteuerte DC-Netze |
| CN103296636B (zh) * | 2013-05-24 | 2016-12-28 | 西安交通大学 | 一种基于自激振荡电路的高压直流气体断路器 |
| CN103762547A (zh) * | 2014-01-08 | 2014-04-30 | 西安交通大学 | 基于人工过零的模块式高压真空直流开断装置 |
-
2018
- 2018-08-24 WO PCT/EP2018/072896 patent/WO2020038587A1/de not_active Ceased
- 2018-08-24 EP EP18769055.7A patent/EP3815121A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020038587A1 (de) | 2020-02-27 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20210127 |
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| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17Q | First examination report despatched |
Effective date: 20230307 |