CN103189948B - Shunting switch - Google Patents
Shunting switch Download PDFInfo
- Publication number
- CN103189948B CN103189948B CN201180053016.3A CN201180053016A CN103189948B CN 103189948 B CN103189948 B CN 103189948B CN 201180053016 A CN201180053016 A CN 201180053016A CN 103189948 B CN103189948 B CN 103189948B
- Authority
- CN
- China
- Prior art keywords
- contact
- load
- tap
- load branch
- msv1
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims description 19
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 101000967087 Homo sapiens Metal-response element-binding transcription factor 2 Proteins 0.000 description 4
- 102100040632 Metal-response element-binding transcription factor 2 Human genes 0.000 description 4
- 241000701364 Thermoproteus tenax virus 1 Species 0.000 description 4
- 101000798109 Homo sapiens Melanotransferrin Proteins 0.000 description 3
- 101000967073 Homo sapiens Metal regulatory transcription factor 1 Proteins 0.000 description 3
- 101001030197 Homo sapiens Myelin transcription factor 1 Proteins 0.000 description 3
- 102100040514 Metal regulatory transcription factor 1 Human genes 0.000 description 3
- 101100258233 Caenorhabditis elegans sun-1 gene Proteins 0.000 description 1
- 101100024583 Mus musculus Mtf1 gene Proteins 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
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The present invention relates to a kind of shunting switch for carrying out unbroken conversion between the tapping of tapping transformer, wherein, two load branch, a load branch and the first tapping and another load branch and the electrical connection of the second tapping are set.Here, each load branch includes that at least one is used as the switch element of main contacts and is connected with common load leads.According to the present invention, first mechanical switch contact is set in the first load branch, the side away from load leads of the first switch element being used as main contacts by this transfer contact is optionally connected with the first tapping or with the second tapping, and arranging the second mechanical switch contact in the second load branch, the side away from load leads of the second switch element being used as main contacts by this transfer contact is the most optionally connected with the first tapping or with the second tapping.So follow current in steady statue is assigned on the switch element of two load branch in a beneficial manner.
Description
Technical Field
The invention relates to a tap changer for switching between two winding taps of a tap transformer without interruption.
Background
DE 2021575 discloses a tap changer with a total of four vacuum interrupter tubes for each stage. In each of the two load branches, a vacuum interrupter is provided as a main contact and a further vacuum interrupter is provided as a resistance contact in series with the switching resistor. During an uninterrupted load changeover from the current winding tap n to the new preselected winding tap n +1, the main contact on the open side is first opened and then the resistance contact on the receiving side is closed, so that a compensation current limited by the changeover resistance flows between the two stages n and n + 1. After the open-side resistive contact, which was closed so far, is opened, the accept-side main contact is closed, so that all the load current flows from the new winding tap n +1 to the load line, and the switching is finished.
In this known tap changer, the vacuum interrupter tube of the connected load branch conducts a continuous current during steady operation.
Tap changers of this kind with two load branches, each with two vacuum switching tubes, have proven suitable in practice. However, there are applications in which high follow-up currents can occur, so that in stationary operation conduction through a vacuum interrupter can be problematic.
A similar circuit is also known, which also has four vacuum interrupters per stage, but two vacuum interrupters are connected in series in each load circuit and one of the vacuum interrupters is connected in parallel with a switching resistor. In this case, two vacuum interrupters connected in series conduct a continuous current, which can also be problematic at very high continuous currents.
In principle, it is known in this case to provide various circuits with mechanical permanent contacts in parallel with the two load branches, which, after a load changeover, conduct a permanent current in steady operation and thus unload the vacuum interrupter. The current-carrying continuous contact is thus opened before the actual load changeover, and the current-receiving continuous contact is closed after the actual load changeover.
However, such mechanical permanent contacts increase the space requirement of the tap changer, the structural complexity and additionally extend the switching sequence, i.e. the number of contacts to be operated in sequence in one load change.
The problem is not limited to tap changers with vacuum interrupters as switching elements. This disadvantage also occurs in tap changers with mechanical contacts as switching elements or with semiconductor switches.
Disclosure of Invention
The object of the present invention is therefore to provide a tap changer of the type mentioned at the outset which can also conduct high continuous currents without additional mechanical continuous contacts.
The general idea of the invention is: the continuous current is distributed to all switching elements of the two load branches which are used as main contacts, and both the at least one switching element in the load branch which conducts the current and the at least one switching element in the load branch which does not conduct the load current, which is present but is not present in the prior art, are used to conduct the continuous current. The object of the invention is thus solved and no further switching elements or switching elements of larger dimensions are required.
Drawings
The invention is explained in detail below by way of example with the aid of the accompanying drawings. The attached drawings are as follows:
fig. 1 shows a tap changer according to the invention, in this case with a vacuum interrupter as a switching element, in the steady state when connected to a winding tap n of a tap winding of a tap transformer;
fig. 1a to 8 show the individual steps during the load changeover to the new winding tap n + 1.
Detailed Description
In the tap changer according to the invention, a first load branch is provided in which a vacuum interrupter MSV1 serving as the main contact and a switching resistor R1 connected in parallel with it and a vacuum interrupter TTV1 serving as the resistive contact are arranged. In a completely similar manner, the second load branch comprises the vacuum switch tube MSV2 and, in parallel thereto, a further transfer resistor R2 and a vacuum switch tube TTV 2. The circuit corresponds to the prior art.
According to the invention, a first mechanical changeover contact MTF1 is provided in the first load branch, by means of which the side of the vacuum interrupter MSV1 not connected to the load line L can be connected selectively to the current tap winding tap n or to the new winding tap n + 1.
In addition, according to the invention, a second mechanical changeover contact MTF2 is provided in the second load branch, by means of which the side of the vacuum interrupter MSV2 not connected to the load line L can likewise be connected selectively to the current tap winding tap n or to the new winding tap n + 1.
In the case shown in fig. 1, the load current flows from the winding tap n to the load lead via the vacuum switching tube MSV1 according to the prior art. Only vacuum switching tube MSV1 conducts the continuous current. In contrast, by means of the circuit according to the invention with the mechanical changeover contacts MTF1 and MTF2 in the two load branches, the load current IL, i.e. the permanent current in stationary operation, is distributed to the vacuum switching tubes MSV1 and MSV2, which therefore each only have to conduct half the load current 1/2IL as permanent current. The advantages are obvious: the vacuum interrupter operates more economically, requires less space and does not require mechanical continuous contacts.
The sequence of one complete changeover of the tap changer according to the invention from winding tap n to winding tap n +1 is shown below with the aid of further figures. Ust here denotes the tapping voltage between the two winding taps. The path leading the load current is indicated by a bold line.
FIG. 1 a: tap n is still switched on stably, as already explained with the aid of fig. 1 a. The vacuum switching tubes TTV2 and MSV2 are disconnected; the conversion starts from this step.
FIG. 2: the vacuum switching tubes TTV2 and MSV2 are open and the mechanical contacts MTF2 are now closed. The load current IL now flows through only the left load branch.
FIG. 3: the vacuum switch MSV1 is opened and the load current is switched to the resistor branch of the series circuit comprising the vacuum switch TTV1 and the resistor R1.
FIG. 4: the vacuum switching tube TTV2 in the right resistive branch is now closed, forming the loop current Ic.
FIG. 5: the vacuum switching tube TTV1 is now open and the right resistor branch of the series circuit comprising the vacuum switching tube TTV2 and the resistor R2 receives the load current completely.
FIG. 6: vacuum switch tube MSV2 closes and conducts current while operating mechanical transfer contacts MTF 1.
FIG. 7: the vacuum switching tubes MSV1 and TTV1 of the left load branch are closed.
FIG. 8: a new stable final state is realized; the conversion is ended. The load current IL is distributed from the winding tap n +1 to two vacuum switching tubes MSV1 and MSV2, which each direct half of the load current 1/2IL to the load lead L.
It is particularly advantageous that the mechanical contacts (MTF1, MTF2) are constructed identically and/or combined into one single component.
The present invention is not limited to the use of vacuum switching tubes as switching elements. Tap changers with mechanical contacts or semiconductor switches as switching elements also belong to the scope of the invention. The advantages of the invention are equally applicable to such tap changers.
Claims (6)
1. Tap changer for uninterrupted switching between two winding taps (n, n +1) of a tap transformer, comprising:
-a first selector contact connectable with a first winding tap (n);
-a second selector contact connectable to a second winding tap (n + 1);
-a first load branch connected with the first selector contact;
-a second load branch connected with a second selector contact;
wherein,
-the first load branch comprises a first switching element (MSV1) acting as a main contact,
-the second load branch comprises a second switching element (MSV2) serving as a main contact, and
the first and second load branches are connected to a common load lead (L),
-additionally providing in the first load branch a first mechanical transfer contact (MTF1) by means of which the side of the first switching element (MSV1) not connected to the load lead (L) is selectively connectable to the respective selector contact,
-additionally providing in the second load branch a second mechanical transfer contact (MTF2) by means of which the side of the second switching element (MSV2) not connected to the load lead (L) can also be connected selectively to the respective selector contact in a similar manner.
2. Tap changer according to claim 1,
the first mechanical transfer contact (MTF1) includes: a first fixed contact connected to the first selector contact; a second fixed contact; a first movable contact connected to the first switching element (MSV1) and selectively connectable to the first or second fixed contact,
the second mechanical transfer contact (MTF2) comprises: a third fixed contact; a fourth fixed contact connected to the second selector contact; a second movable contact connected to a second switching element (MSV2) and selectively connectable to a third or fourth fixed contact,
the first fixed contact is connected with the third fixed contact,
the second fixed contact is connected with the fourth fixed contact.
3. Tap changer according to claim 1 or 2, characterized in that the first mechanical transfer contact (MTF1) and the second mechanical transfer contact (MTF2) are configured to be identical.
4. Tap changer according to claim 1 or 2, characterized in that the first mechanical transfer contact (MTF1) and the second mechanical transfer contact (MTF2) are combined into one component.
5. Tap changer according to claim 1 or 2,
vacuum switching tubes are used as switching elements (MSV1, MSV 2); or
Using mechanical contacts as switching elements (MSV1, MSV 2); or
As switching elements, electrical semiconductor switches are used (MSV1, MSV 2).
6. Tap changer according to claim 5, characterized in that thyristors or IGBTs are used as switching elements.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010050882A DE102010050882A1 (en) | 2010-11-09 | 2010-11-09 | step switch |
| DE102010050882.9 | 2010-11-09 | ||
| PCT/EP2011/005337 WO2012062408A1 (en) | 2010-11-09 | 2011-10-22 | On-load tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103189948A CN103189948A (en) | 2013-07-03 |
| CN103189948B true CN103189948B (en) | 2016-10-12 |
Family
ID=44903151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180053016.3A Expired - Fee Related CN103189948B (en) | 2010-11-09 | 2011-10-22 | Shunting switch |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2638553B1 (en) |
| CN (1) | CN103189948B (en) |
| DE (1) | DE102010050882A1 (en) |
| HK (1) | HK1186290A1 (en) |
| WO (1) | WO2012062408A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3004284B1 (en) | 2013-04-08 | 2015-04-03 | Schneider Electric Ind Sas | TRANSFORMER WITH MEANS FOR ADJUSTING THE LOAD TRANSFORMATION RATIO |
| DE102015106178A1 (en) * | 2015-04-22 | 2016-10-27 | Maschinenfabrik Reinhausen Gmbh | OLTC |
| US12198886B2 (en) | 2020-06-29 | 2025-01-14 | Electric Power Research Institute. China Southern Power Grid | Passive triggered-power electronic tap-changer device and contact device |
| CN111899999B (en) * | 2020-06-29 | 2021-09-03 | 南方电网科学研究院有限责任公司 | Power electronic tap changer and distribution transformer |
| CN112151289A (en) * | 2020-09-23 | 2020-12-29 | 上海华明电力设备制造有限公司 | An on-load tap-changer for tapping with power semiconductor devices |
| CN112670066B (en) * | 2020-11-18 | 2023-03-21 | 中国电力科学研究院有限公司 | Transition circuit device and method for alternately bearing symmetrical vacuum bubbles |
| CN116721848B (en) * | 2023-06-05 | 2024-04-02 | 中国南方电网有限责任公司超高压输电公司广州局 | On-load tap changer and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3467800A (en) * | 1967-03-21 | 1969-09-16 | Gen Electric | Reversible cam actuating mechanism for electric switches |
| US3935407A (en) * | 1973-09-25 | 1976-01-27 | Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. | Multiphase vacuum switch assembly having cam operated spring charging drive mechanism with lost motion connection |
| US4384247A (en) * | 1981-05-08 | 1983-05-17 | Trw Inc. | Under-load switching device particularly adapted for voltage regulation and balance |
| CN1965276A (en) * | 2004-09-28 | 2007-05-16 | 赖茵豪森机械制造公司 | Device for regulating electrical voltage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2125763A1 (en) * | 1971-05-25 | 1972-12-07 | Transformatoren Union Ag | |
| DE2228445A1 (en) * | 1972-06-10 | 1973-12-20 | Transformatoren Union Ag | DRIVE FOR LOAD SWITCH |
| EP0009287A1 (en) * | 1978-09-18 | 1980-04-02 | ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme | Electrical apparatus comprising a series of voltage taps and a tap selector and/or a circuit breaker |
| JPS5792813A (en) * | 1980-12-01 | 1982-06-09 | Toshiba Corp | On-load tap changer |
| EP1779397B1 (en) * | 2004-06-30 | 2015-12-02 | ABB Research Ltd. | A diverter switch, a method for operating such a switch and use of such a switch |
-
2010
- 2010-11-09 DE DE102010050882A patent/DE102010050882A1/en not_active Ceased
-
2011
- 2011-10-22 WO PCT/EP2011/005337 patent/WO2012062408A1/en active Application Filing
- 2011-10-22 EP EP11776703.8A patent/EP2638553B1/en not_active Not-in-force
- 2011-10-22 CN CN201180053016.3A patent/CN103189948B/en not_active Expired - Fee Related
-
2013
- 2013-12-06 HK HK13113635.9A patent/HK1186290A1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3467800A (en) * | 1967-03-21 | 1969-09-16 | Gen Electric | Reversible cam actuating mechanism for electric switches |
| US3935407A (en) * | 1973-09-25 | 1976-01-27 | Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. | Multiphase vacuum switch assembly having cam operated spring charging drive mechanism with lost motion connection |
| US4384247A (en) * | 1981-05-08 | 1983-05-17 | Trw Inc. | Under-load switching device particularly adapted for voltage regulation and balance |
| CN1965276A (en) * | 2004-09-28 | 2007-05-16 | 赖茵豪森机械制造公司 | Device for regulating electrical voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012062408A1 (en) | 2012-05-18 |
| EP2638553A1 (en) | 2013-09-18 |
| CN103189948A (en) | 2013-07-03 |
| EP2638553B1 (en) | 2015-09-30 |
| DE102010050882A1 (en) | 2012-05-10 |
| HK1186290A1 (en) | 2014-03-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20181022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |