CN108780717B - Outdoor high-voltage power switch - Google Patents
Outdoor high-voltage power switch Download PDFInfo
- Publication number
- CN108780717B CN108780717B CN201680083435.4A CN201680083435A CN108780717B CN 108780717 B CN108780717 B CN 108780717B CN 201680083435 A CN201680083435 A CN 201680083435A CN 108780717 B CN108780717 B CN 108780717B
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- CN
- China
- Prior art keywords
- contact gap
- drive
- outdoor high
- voltage power
- power switch
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- 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.)
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- 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
-
- 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
- H01H33/165—Details concerning the impedances
-
- 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
- H01H33/168—Impedances connected with contacts the impedance being inserted both while closing and while opening the switch
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an outdoor high-voltage power switch, which comprises a first contact gap, a first switch rod, a first transmission device and a first driving device, wherein the first driving device drives the first switch rod, and the first switch rod opens or closes the first contact gap through the first transmission device. The outdoor high-voltage circuit breaker additionally comprises a second contact gap having a resistance, a second switching lever, a second gear and a second drive, wherein the second drive drives the second switching lever and the second switching lever opens or closes the second contact gap via the second gear.
Description
Technical Field
The invention relates to an outdoor high-voltage power switch
Background
Such an outdoor high-voltage circuit breaker is known, for example, from german utility model DEl 995069.
An outdoor high-voltage power switch may be used, for example, to switchably connect an overhead line to a voltage source. Overhead lines may have a length of, for example, hundreds of kilometers. When a voltage is connected to the overhead line by means of an outdoor high-voltage power switch, a voltage wave propagates on the overhead line, which voltage wave is reflected at the end of the overhead line. A certain influence time, typically between 10ms (milliseconds) and 15ms, therefore lasts until a stable state is established on the overhead line.
Generally, the overhead wire has a total resistance per unit length in the range of 200 Ω (ohm) to 600 Ω. The resistance of the overhead wire is generally a characteristic impedance having an impedance as a complex impedance.
Disclosure of Invention
The object of the invention is therefore to specify an outdoor high-voltage circuit breaker in which the reflection of voltage waves at the open end of a load, for example an overhead line, does not lead to excessive voltages.
The outdoor high-voltage circuit breaker according to the invention is designed such that it comprises a first contact gap, a first switching lever, a first transmission and a first drive, wherein the first drive drives the first switching lever and the first switching lever opens or closes the first contact gap by means of the first transmission. The outdoor high-voltage circuit breaker according to the invention additionally comprises a second contact gap having a resistance, a second switching lever, a second gear and a second drive, wherein the second drive drives the second switching lever and the second switching lever opens or closes the second contact gap via the second gear.
It is advantageous here that the outdoor high-voltage circuit breaker according to the invention closes the connected overhead line, for example, with the resistance of the second contact gap, so that reflection of the voltage wave does not lead to an excessively high voltage. By independently switching the resistance of the second contact gap and the first contact gap, the action time of the resistance of the switching task can be adjusted in each switching operation. In a transformer power switch, this may be, for example, switching on a transformer or switching on a connected overhead line. Furthermore, the mass of the movement is reduced by distributing the switching movement to the two systems. This makes it possible to use lighter switch levers and smaller drives.
In one embodiment, the first contact gap is arranged electrically in parallel with the second contact gap having the electrical resistance. Thus, by opening or closing the first contact gap or the second contact gap, the two parallel branches can be opened or closed separately by the outdoor high-voltage circuit breaker according to the invention.
In a further embodiment, the second drive is switched off or on before the first drive in terms of time. This ensures that the resistance of the second contact gap is used, for example, as a so-called on-resistance, which provides, for example, an impedance adjustment of the connected overhead line.
In a further embodiment, the second drive is switched on 10ms to 15ms before the first drive. For a typical overhead line resistance of 200 Ω to 600 Ω this means that the line charges to 100% in the influence time of 10ms to 15 ms. After charging the overhead line, the first contact gap can be switched on, so that the current path extends via the first contact gap. The resistance is approximately a few 10 μ Ω for the first contact gap which is closed.
In an alternative embodiment, the second drive is switched on 100ms to several hundred milliseconds before the first drive. It is advantageous here if, for example, the resistance of the second contact gap thus acts as a current limiter.
In a further embodiment, the second drive is switched on before the first drive, so that an electrical overload of the second contact gap is prevented. If the resistance of the first contact gap is designed to be, for example, a few 10 μ Ω, it is ensured that a current flows through this first path when the first contact gap is closed. The ohmic resistance of the second contact gap is then relieved and no further energy is dissipated in this resistance.
In a further embodiment, the second drive is switched off or on before the first drive in terms of time by mechanical or electrical coupling. For example, the controllers of the first and second drive means may provide an electrical coupling, but a mechanical coupling of the movements of the first and second switch lever is likewise conceivable.
In one embodiment, the second contact gap is arranged parallel to the first contact gap.
In a further embodiment, the first contact gap is arranged perpendicular to the first switching lever and the second contact gap is arranged perpendicular to the second switching lever.
In a further embodiment, the first switching lever extends parallel to the second switching lever.
In an alternative embodiment, the first contact gap is arranged electrically in series with a second contact gap having a resistance, and the resistance is arranged electrically in parallel with the second contact gap.
In this alternative embodiment, the second drive is switched on after the first drive in terms of time. For example, the second drive can be switched on 10ms to 15ms after the first drive in terms of time. Likewise, the second drive can be switched on in time between 100ms and several hundred milliseconds after the first drive.
Drawings
The above features, characteristics and advantages of the present invention and the manner of attaining them will become more apparent and the invention will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings.
In the drawings:
figure 1 shows a side view of an outdoor high-voltage power switch,
fig. 2 shows a further side view of an outdoor high-voltage power switch, an
Fig. 3 shows a top view of an outdoor high-voltage power switch.
Detailed Description
Fig. 1 to 3 show an outdoor high voltage power switch 100 according to the invention. Fig. 1 shows a side view of an outdoor high voltage power switch 100, fig. 2 shows a further side view of the outdoor high voltage power switch, and fig. 3 shows a top view of the outdoor high voltage power switch.
The outdoor high voltage power switch 100 comprises a first contact gap 111; 112. depending on the voltage to be switched, the first contact gap 111; 112 may be divided into a plurality of switch chambers. For example for an outdoor high voltage power switch 100 switching voltages in the range of 420kV, the first contact gap may be two switch chambers, as shown in fig. 2 and 3. The two switch chambers 111 and 112 are connected in series and by opening and closing prevent or enable current flow through the outdoor high voltage power switch 100. Furthermore, the outdoor high voltage power switch comprises a first switch lever 120, a first transmission 130 and a first drive 140. The first drive 140 drives the first switching lever 120 and the first switching lever opens or closes the first contact gap 111 by means of the first gear 130; 112.
furthermore, the outdoor high voltage power switch 100 according to the invention additionally comprises a second contact gap 211; 212. the second contact gap can also be formed by the two switching chambers 211 and 212. A switch chamber 211; 212 are electrically connected in series. The second contact gap 211; 212 include resistors. The resistance may be, for example, an on-resistance. The resistor may for example have an impedance of 450 omega or typically in the range between 200 omega and 600 omega.
The second contact gap 211; 212 are likewise driven by a second switch lever 220, a second gear 230 and a second drive 240. The second drive means 240 drives the second switch lever 220 and the second switch lever drives the second contact gap 211 via the gear 230; 212 are used to turn off or on.
The first contact gap 111; 112 and a second contact gap 211 having a resistance; 212 are arranged electrically in parallel. For example, the second contact gap 211; 212 may be 450 Ω in the on state and the first contact gap 111; the resistance of 112 may be in the range of about a few 10 μ Ω in the on state.
The second drive 240 may be controlled such that it is switched off or on prior in time to the first drive 140. Therefore, when the outdoor high-voltage power switch 100 is turned on, the second driving device 240 operates first, and the second contact gap 211 having a resistance; 212 are turned on. Thus, for example, a voltage can be supplied to the connected overhead line. Through the second contact gap 211; the resistance of 212 accordingly blocks the reflection of the voltage wave and the overhead line can accordingly be charged to 100%. This typically occurs after an impact time of 10ms to 15 ms. After an impact time of 10ms to 15ms, the first contact gap 111; 112 are switched on, so that the current now flows predominantly through the first contact gap 111; 112.
likewise, for example, when switching on a transformer by the outdoor high-voltage circuit breaker 100, it may be desirable that the second contact gap 211; the resistance of 212 acts as a current limiter. It is advantageous, for example, to switch on the second drive 240 100ms to several hundred milliseconds before the first drive 140. This time period is sufficient for limiting the current in the transformer.
Flows through the second contact gap 211; the current of the resistor of 212 must be limited in time to prevent overloading of the resistor. Therefore, the second drive 240 should be switched on before the first drive 140 in time, so as to prevent the second contact gap 211; 212 is overloaded and the resistance is not overheated. This time period varies with the functionality implemented by the resistance.
The temporal switching on and off behavior of the first drive 140 and the second drive 240 can be realized by a mechanical or electrical coupling of the two drives. For example, the controllers of the first drive device 140 and the second drive device 240 may be electrically coupled. However, mechanical couplings are likewise conceivable, which ensure that the second drive 240 is switched on before the first drive 140 in time.
The outdoor high voltage power switch 100 may be mechanically constructed such that the second contact gap 211; 212 and the first contact gap 111; 112 are arranged in parallel. This is shown for example in fig. 2 and 3. The load is electrically connected to the first contact gap 111; 112 and a second contact gap 211; 212, respectively, outer ends. This is for example the left and right in the illustrations of fig. 2 and 3.
The outdoor high-voltage power switch 100 can be constructed according to fig. 2 such that the first contact gap 111; 112 extend perpendicularly to the first switch lever 120. The first switch lever 120 may, for example, extend inside the support column 151, however an extension outside the support column 151 is likewise conceivable. The second contact gap 211; 212 may likewise be disposed perpendicular to the second switch lever 220. The second switch lever 220 may also extend inside the support column 151 or may also extend outside the support column 151.
Corresponding to fig. 1, the first switch lever 120 may extend parallel to the second switch lever 220.
According to the embodiment shown, a resistor is connected in series with the second contact gap 211; 212 are arranged.
Alternatively, it is possible that the first contact gap 111; 112 are electrically connected in series to a second contact gap 211 having a resistance; 212 and the resistance is electrically parallel to the second contact gap 211; 212 are arranged.
In this alternative embodiment of the outdoor high-voltage circuit breaker 100 according to the invention, the second drive 240 is switched on after the first drive 140 in terms of time. The second drive 240 can be switched on 10ms to 15ms after the first drive 140 in time. Likewise, the second drive 240 may be switched on 100ms to several hundred milliseconds after the first drive 140 in time.
The on-resistance on the outdoor high-voltage circuit breaker 100 is usually used only at high operating voltages, which requires correspondingly long supporting columns. In the case of the implementation of support columns with composite insulators, these composite insulators provide a greater free space inside than porcelain insulators due to the required mechanical strength. In this free space, a further second switching lever 220 is now arranged, which is associated with the on-resistance and has a corresponding guide element. Additionally, a further second drive 240 is provided on the switch base, which is associated with the on-resistance. Two driving devices 140; 240, thereby preventing the second contact gap 211; 212 is overloaded with on-resistance. By controlling the two drives 140, 240 over time, the time of application of the on-resistance can be varied until the overload protection is reached.
By independently switching the second contact gap 211; 212 and the first contact gap 111; 112 can adjust the second contact gap 211 of the switching task in each switching operation; 212, on-time of resistance. For example, in a transformer power switch, this may be to turn on the transformer or to turn on the connected overhead line. In order to avoid and reduce overvoltages when long overhead lines are switched on, an operating time of typically 10ms to 15ms is sufficient. In contrast, an operating time of 100ms to several hundred milliseconds is required to effectively attenuate the transformer inrush current. The mass of the movement is reduced by distributing the switching movement to both systems. A lighter switch lever 120 can thereby be used; 220 and smaller drive devices 140; 240.
Claims (6)
1. an outdoor high-voltage power switch (100) comprising a first contact gap (111; 112), a first switch lever (120), a first gear (130) and a first drive (140), wherein the first drive (140) drives the first switch lever (120) and the first switch lever opens or closes the first contact gap (111; 112) by means of the first gear (130),
characterized in that the outdoor high-voltage circuit breaker (100) additionally comprises a second contact gap (211; 212) having a resistance, a second switch lever (220), a second gear mechanism (230) and a second drive mechanism (240), wherein the second drive mechanism (240) drives the second switch lever (220) and the second switch lever opens or closes the second contact gap (211; 212) by means of the second gear mechanism (230), the first contact gap (111; 112) is arranged electrically in parallel to the second contact gap (211; 212) having the resistance, the second drive mechanism (240) is opened or closed temporally before the first drive mechanism (140), and the second drive mechanism (240) is closed temporally 100 milliseconds to several hundred milliseconds before the first drive mechanism (140) when the outdoor high-voltage circuit breaker (100) is switched on a transformer.
2. The outdoor high-voltage power switch (100) according to claim 1, wherein the second drive means (240) is switched on before the first drive means (140) in time to prevent an overload of the resistance of the second contact gap (211; 212).
3. The outdoor high voltage power switch (100) according to claim 1, wherein the second driving means (240) is switched off or on before the first driving means (140) in time, either mechanically or by electrical coupling.
4. The outdoor high-voltage power switch (100) according to claim 1, wherein the second contact gap (211; 212) is arranged parallel to the first contact gap (111; 112).
5. The outdoor high-voltage power switch (100) according to claim 1, wherein the first contact gap (111; 112) is arranged perpendicular to the first switch lever (120) and the second contact gap (211; 212) is arranged perpendicular to the second switch lever (220).
6. The outdoor high voltage power switch (100) according to claim 1, wherein the first switch lever (120) extends parallel to the second switch lever (220).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016202764.6A DE102016202764A1 (en) | 2016-02-23 | 2016-02-23 | Outdoor high-voltage circuit breakers |
| DE102016202764.6 | 2016-02-23 | ||
| PCT/EP2016/078424 WO2017144131A1 (en) | 2016-02-23 | 2016-11-22 | High-voltage outdoor circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108780717A CN108780717A (en) | 2018-11-09 |
| CN108780717B true CN108780717B (en) | 2020-11-06 |
Family
ID=57442651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680083435.4A Active CN108780717B (en) | 2016-02-23 | 2016-11-22 | Outdoor high-voltage power switch |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108780717B (en) |
| DE (1) | DE102016202764A1 (en) |
| WO (1) | WO2017144131A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018214493A1 (en) | 2018-08-28 | 2020-03-05 | Siemens Aktiengesellschaft | Medium or high voltage switch and its use |
| DE102018216725A1 (en) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | High-voltage switching device and method for switching high voltages |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263490A (en) * | 1977-08-24 | 1981-04-21 | Delle-Alsthom | Device for switching in closing resistors for high-voltage cut-out switches |
| EP0574903A1 (en) * | 1992-06-18 | 1993-12-22 | Kabushiki Kaisha Toshiba | UHV breaker provided with resistances |
| CN1199234A (en) * | 1997-05-14 | 1998-11-18 | Abb·专利有限公司 | Metal-enclosed gas-insulated circuit breaker |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1995069U (en) | 1968-07-25 | 1968-10-24 | Siemens Ag | THREE-POLE CIRCUIT BREAKER. |
| DE2627769C3 (en) * | 1976-06-18 | 1979-04-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Resistance arrangement for high voltage equipment |
| JPS5774917A (en) * | 1980-10-25 | 1982-05-11 | Tokyo Shibaura Electric Co | Breaker with parallel resistor |
| JPS5968127A (en) * | 1982-10-13 | 1984-04-18 | 株式会社日立製作所 | Porcelain-type breaker |
| JP3399987B2 (en) * | 1992-10-14 | 2003-04-28 | 株式会社東芝 | Circuit breaker with resistance |
| DE10013232A1 (en) * | 2000-03-13 | 2001-09-20 | Siemens Ag | Outdoor multiphase encapsulated gas-insulated high-voltage (HV) switching equipment |
-
2016
- 2016-02-23 DE DE102016202764.6A patent/DE102016202764A1/en active Pending
- 2016-11-22 CN CN201680083435.4A patent/CN108780717B/en active Active
- 2016-11-22 WO PCT/EP2016/078424 patent/WO2017144131A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263490A (en) * | 1977-08-24 | 1981-04-21 | Delle-Alsthom | Device for switching in closing resistors for high-voltage cut-out switches |
| EP0574903A1 (en) * | 1992-06-18 | 1993-12-22 | Kabushiki Kaisha Toshiba | UHV breaker provided with resistances |
| CN1199234A (en) * | 1997-05-14 | 1998-11-18 | Abb·专利有限公司 | Metal-enclosed gas-insulated circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016202764A1 (en) | 2017-08-24 |
| WO2017144131A1 (en) | 2017-08-31 |
| CN108780717A (en) | 2018-11-09 |
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Effective date of registration: 20211129 Address after: Munich, Germany Patentee after: Siemens energy Global Ltd. Address before: Munich, Germany Patentee before: SIEMENS AG |
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