CN103415904A - Load stepping switch - Google Patents
Load stepping switch Download PDFInfo
- Publication number
- CN103415904A CN103415904A CN2012800122031A CN201280012203A CN103415904A CN 103415904 A CN103415904 A CN 103415904A CN 2012800122031 A CN2012800122031 A CN 2012800122031A CN 201280012203 A CN201280012203 A CN 201280012203A CN 103415904 A CN103415904 A CN 103415904A
- Authority
- CN
- China
- Prior art keywords
- resistance
- resistor
- contact
- tap changer
- resistor cartridge
- 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
- 230000007704 transition Effects 0.000 claims abstract description 29
- 239000011810 insulating material Substances 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
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
- H01H9/0016—Contact arrangements for tap changers
-
- 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
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- 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)
- Details Of Resistors (AREA)
- Housings And Mounting Of Transformers (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Regulation Of General Use Transformers (AREA)
- Adjustable Resistors (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a load stepping switch for switching over between taps of a control winding of a stepped transformer without interruption, wherein fixed step contacts are arranged in at least one horizontal plane in a wall of an insulating-material cylinder or on an insulating-material frame and are electrically connected to the taps, wherein a rotatable switching shaft is arranged in the center, said switching shaft having, for each horizontal plane of fixed step contacts on a contact support, mechanical contacts which can each be connected to the fixed step contacts, and wherein at least one contact on the contact support is electrically connected to the load discharge line by means of at least one interposed transition resistor (Ru1, Ru2). The transition resistor (Ru1, Ru2) comprises, in each case, a meandering wire helix (3) which is clamped and fixed by means of at least two resistor holders (6) which are composed of insulating material. The at least two resistor holders (6) of each transition resistor are attached to a shell-like resistor support (10) which is composed of insulating material and the resistor support (10), for its part, is attached to the switch pillar with which it shares a contour.
Description
Technical field
The present invention relates to the on load tap changer of interruptedly not changing between a kind of tap of the winding of the adjusting at the adjustable variable-pressure device.
Background technology
WO99/60588 discloses a kind of on load tap changer of so-called load selector type.This on load tap changer has an insulating material cylinder as housing, and the fixing minute contact point be electrically connected to the tap of the adjusting winding that will connect is arranged in a plurality of horizontal planes circularly in the insulating material barrel.A rotatable transaxle is set in the insulating material cylinder, this transaxle has mechanical contact for each horizontal plane of fixing minute contact point on contact holder, and each mechanical contact can contact with a fixing minute contact point respectively.At least one armature contact on contact holder directly is connected with load leads; And the switching resistance that another contact at least on contact holder is accessed by centre is connected with load leads.Switching resistance at this in known manner for during load transfer, namely interruptedly from a fixing minute contact point to another adjacent fixing minute contact point transition period, be not limited to the loop current that this temporarily passes through.The disclosure document is not mentioned switching resistance itself in detail; In Fig. 3, only schematically show switching resistance on the transition mast right side.This switching resistance is connected with transition mast and together rotates with this transition mast.
DE38 33 126A1 illustrate a kind of on load tap changer of similar load selector type, and wherein, switching resistance is configured to taenidium, and described taenidium transition mast around center on spacing washer is directed.At this switching resistance also along with transition mast motion.But the view shown in the disclosure document is only schematically and therefore when the actual configuration on load tap changer, can't realize.In addition, but the guiding of switching resistance do not allow modular frame mode and be made as in advance the assembly of independent subsequent installation.
WO2008/024067A1 has described a kind of special resistance of the switching on load tap changer.This switching resistance is configured to integrated unit (Paket), and described integrated unit consists of modules.Resistance wire is set parallel to each other in a flat framework in each module, has gap between spiral resistance wire.But by the framework Modularly that a plurality of stacked on top arrange, configure the integrated unit of described total switching resistance.Switching resistance, integrated unit is fixed on a framework or rather, the load transducer that the supporting of this framework is actual.The disclosed switching resistance of the disclosure document therefore be applicable to have selector separately, movable and independent, for the on load tap changer of the fixing load transducer of actual load transfer.This switching resistance is not suitable for starting mentioned load selector type.Due to the frame mode of switching resistance and the space requirement of the whole integrated unit of the modular ground framework of switching resistance, it is impossible in order to when conversion, it is together rotated with transition mast that the resistance of directly transferring is arranged on transition mast.
Summary of the invention
The object of the present invention is to provide a kind of on load tap changer that starts putting forward type, it has one or more switching resistance, described switching resistive mode blocking ground is constructed, has less installing space and can directly be fixed on rotatable transition mast in mode simply and cheaply according to the resistance value of specific (special) requirements, and this transition mast is rotated motion when the operation on load tap changer.
The on load tap changer of the feature of the present invention by having claim 1 solves.Dependent claims relates to particularly advantageous expansion scheme of the present invention.
Basic conception of the present invention is, fixes known taenidium own and the unit of this pre-installation is fixed on resistor cartridge by modular resistance retainer, and this resistor cartridge is fixed on transition mast itself.Resistor cartridge has the profile corresponding to the geometry of rotatable transition mast according to the present invention.
Have the cylindrical transition mast of circular cross section and therewith the corresponding resistor support as the shape of housing or part cylinder, be particularly advantageous, at the interior diameter of this this part cylinder, correspond essentially to the overall diameter of transition mast.But transition mast and resistor cartridge also can have the cross section of corresponding other geometry in category of the present invention.
Advantage of the present invention only is especially that a small amount of member is simple and saves to be directly installed on transition mast spatially.In addition, but but not only the whole resistor cartridge of pre-installation but also simple fit in various resistance value.
Particularly advantageously, on resistor cartridge, fix the switching resistance more than one; Also can be applicable to thus to connect each mutually need to the on load tap changer more than the switching resistance of one in.
The accompanying drawing explanation
Below by accompanying drawing, describe the present invention in detail.Accompanying drawing is as follows:
Fig. 1 is the taenidium according to the switching resistance of shunting switch of the present invention;
Fig. 2 is according to modular resistance retainer of the present invention;
Fig. 3 is according to resistor cartridge of the present invention itself;
Fig. 4 be in completion status according to resistor cartridge of the present invention;
Fig. 5 is this resistor cartridge be arranged on according on the transition mast of on load tap changer of the present invention.
Embodiment
Fig. 1 illustrates each taenidium 1 of being made by resistance wire, and each taenidium be electrically connected to each other by connector 2 respectively forms a complete taenidium structure 3.
In category of the present invention, a unique continuous taenidium 3 also can only be set, this taenidium on steering position only by crooked simply.By these two kinds of execution modes, realized a kind of serpentine configuration, wherein these taenidium parts are approximate extends abreast.
Contact jaw 4 and 5 is be used to being electrically connected to this taenidium structure freely; To this, also will describe in detail.In order to adapt to various resistance value, can select different filament length degree and filament diameter; In order to install, by the resistance retainer 6 of the two-piece type of being made by insulating material accordingly, clamp on preferred two zones and fixing taenidium 3.
Fig. 2 illustrates two different perspective views of this modular resistance retainer 6.Each resistance retainer 6 has clip 6a, and each clip holds respectively a taenidium 1.For these two the identical resistance retainers 6 that open wide in a side are plugged on together, wherein these two resistance retainers are fixed by kayser pin 7 and corresponding latch hole 8 clamp-types ground respectively, make the corresponding taenidium 1 of they encirclements.At the described contact pin 6b that is provided with shaping between be used to the clip 6a held, the position of fixing corresponding each taenidium 1 of each contact pin the position of therefore fixing whole taenidium 3.For clarity sake, for all these zones, do not mark Reference numeral.According to required resistance wire length and the therefore quantity of required taenidium 1, it is vacant that some clip 6a also can keep.Function about the alignment pin 9 illustrated on the closed side at resistance retainer 6 below also will be described.
Fig. 3 illustrates resistor cartridge 10, pre-installation, by described mirror image symmetrically the fixing taenidiums 3 of clip resistance retainer 6 together can be fixed on this resistor cartridge.Resistor cartridge 10 is made by insulating material and is had the columniform profile of part, and the curvature of this profile adapts to the diameter of unshowned transition mast.Due to resistance retainer 6, spatially be fixed on apart from each other on the diverse location of curved surface of resistor cartridge, thus the also deflection slightly of each taenidium, thus each taenidium is followed this bending.
Shown in the example of Fig. 3 in, resistor cartridge 10 is provided for fixing the switching resistance of two independent pre-installations; But the present invention is not limited to this.Final this depends on the related circuit of concrete on load tap changer, namely for what each will be connected, needs mutually how many independent switching resistance.Resistor cartridge 10 has location hole 11, and each location hole is corresponding to the alignment pin 9 of the resistance retainer 6 that will install of having carried.Be provided with in addition the opening 12 for fixed resistance retainer 6.Wiring angle 13 is set in addition, and it also will be described in detail below.
Fig. 4 illustrates the resistor cartridge 10 of assembling fully.Can see that two are installed complete switching resistance R ü 1 and R ü 2, its comprise respectively a taenidium 3 and in both sides by four resistance retainers 6 are fixing altogether, wherein every two resistance retainers fit together.Complete switching resistance R ü 1 and the reality of R ü 2 are fixing is undertaken by the electric wire ligature, and described electric wire ligature passes the opening 12 of resistor cartridge 10 and is fixed.In category of the present invention, also can expect other fixedly possibility, for example by clamp-type, connect or be threaded connection.Also can see power lug 14 and 15, it is arranged on wiring angle 13 and sets up and be electrically connected to the starting point of corresponding complete switching resistance R ü 1, R ü 2 and terminal.For each switching resistance being streamed better by the insulating oil of on load tap changer and therefore improving mechanical strength cooling and raising switching resistance, resistor cartridge 10 has through hole 16, for all through holes, Reference numeral is not set.
Finally, this also in the both sides of the resistor cartridge 10 of shelly, on cantilever, be respectively equipped with fixed groove 17 and lower fixed groove 18.As mentioned above, because resistance retainer 6 consists of identical part, so can see untapped alignment pin on outside directed resistance retainer 6.
Fig. 5 illustrates the transition mast completed 19 according on load tap changer of the present invention.Only schematically show contact holder 20, this contact holder is fixed on transition mast 19 and support movable contact in known manner, when transition mast 19 rotation, can by described armature contact, connect in a known way (unshowned) fixed contact in (unshowned equally) wall of insulating material cylinder of on load tap changer.In example shown here, resistor cartridge 10 is fixed on switch element in locking manner and antitorquely, is on contact holder 20 by the sealed fixture of the shape of the correspondence on the groove 17,18 shown in Fig. 4 and switch element 20 and this additional safeties shape consisted of plastic pin in both sides in join domain 21.In category of the present invention, also resistor cartridge 10 directly can be fixed on transition mast 19.This is fixed itself and also can be undertaken by alternate manner.
In a word, on load tap changer according to the present invention has the simple especially, low-cost of switching resistance and in this reliable structure.Taenidium 3 can change in very large scope, in order to realize various resistance value.Resistance retainer 6 only comprises a unique same parts, at the rotatable 180 ° of clips each other of these two parts; Avoided in practice setup error.The structure of resistor cartridge 10 is also very simple.A plurality of switching resistance of resistor cartridge receivability, but and nonessential like this.When a unique switching resistance only was set, other zones of resistor cartridge kept vacant simply.
Claims (7)
1. the on load tap changer of interruptedly not changing between the tap for the adjusting winding at the adjustable variable-pressure device, wherein, in the wall of insulating material cylinder or a fixing minute contact point is being set on the insulating material frame at least one horizontal plane, each fixing minute contact point is electrically connected to each tap; A rotatable transaxle is set at center, and for each horizontal plane of each fixing minute contact point, this transaxle has mechanical contact on contact holder, and each mechanical contact can be connected respectively fixing minute contact point; At least one mechanical contact on contact holder directly is electrically connected to load leads; And at least one switching resistance that another contact at least on contact holder is accessed by centre is electrically connected to load leads,
It is characterized in that, described at least one switching resistance (R ü 1, R ü 2) comprises the taenidium (3) of snakelike shaping, this taenidium by least two respectively the resistance retainer (6) of being made by insulating material of two-piece type clamp and be fixing; Described at least two resistance retainers (6) of each switching resistance (R ü 1, R ü 2) are fixed on the resistor cartridge (10) of being made by insulating material; Resistor cartridge (10) has the profile of shelly, and this profile corresponds essentially to the profile of transition mast; And resistor cartridge (10) is fixed on transition mast.
2. on load tap changer according to claim 1, it is characterized in that, the resistance retainer (6) of each two-piece type comprises two half identical ones, half and half one can be connected to each other by kayser pin (7) and corresponding latch hole (8), make half and half one have sealing be used to the clip (6a) that holds corresponding taenidium (1) and the contact pin (6b) be shaped between each clip.
3. on load tap changer according to claim 1 and 2, it is characterized in that, described resistance retainer (6) has respectively at least one alignment pin (9), and this at least one alignment pin is corresponding with at least one location hole (11) on resistor cartridge (10) in installment state.
4. according to the described on load tap changer of one of claims 1 to 3, it is characterized in that, described resistor cartridge (10) has the columniform profile of part.
5. according to the described on load tap changer of one of claim 1 to 4, it is characterized in that, described at least two resistance retainers (6) are fixed on resistor cartridge by fixture, and described fixture is passed the opening (12) of resistor cartridge (10).
6. on load tap changer according to claim 5, is characterized in that, described fixture is the device of electric wire ligature or other band shape or wire.
7. according to the described on load tap changer of one of claim 1 to 6, it is characterized in that, the fixed groove (17,18) of side direction is set on resistor cartridge (10), by described fixed groove, resistor cartridge (10) directly is fixed on the contact holder (20) of the upper or transition mast of transition mast (19).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011014325.4A DE102011014325B4 (en) | 2011-03-18 | 2011-03-18 | OLTC |
| DE102011014325.4 | 2011-03-18 | ||
| PCT/EP2012/052866 WO2012126685A1 (en) | 2011-03-18 | 2012-02-20 | Load stepping switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103415904A true CN103415904A (en) | 2013-11-27 |
| CN103415904B CN103415904B (en) | 2016-09-07 |
Family
ID=45722649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280012203.1A Active CN103415904B (en) | 2011-03-18 | 2012-02-20 | Load ratio bridging switch |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2686857B1 (en) |
| CN (1) | CN103415904B (en) |
| BR (1) | BR112013018969B1 (en) |
| DE (1) | DE102011014325B4 (en) |
| ES (1) | ES2525130T3 (en) |
| UA (1) | UA112177C2 (en) |
| WO (1) | WO2012126685A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546010A (en) * | 2017-08-16 | 2018-01-05 | 芜湖市凯鑫避雷器有限责任公司 | A kind of transformer regulating winding construction |
| CN109637858A (en) * | 2018-12-12 | 2019-04-16 | 国网北京市电力公司 | Transformer switch group, transformer, transformer capacity transfer method and device |
| CN114072891A (en) * | 2019-07-01 | 2022-02-18 | 日立能源瑞士股份公司 | Tap changer barrier in a power transformer |
| CN114450758A (en) * | 2019-09-27 | 2022-05-06 | 赖茵豪森机械制造公司 | Resistor device for a step switch and step switch |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013107552B4 (en) | 2013-07-16 | 2017-03-16 | Maschinenfabrik Reinhausen Gmbh | OLTC |
| US20230260695A1 (en) * | 2020-11-06 | 2023-08-17 | Abb Power Grids Switzerland Ag | A tap changer and a transformer arrangement comprising the tap changer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3546653A (en) * | 1969-06-02 | 1970-12-08 | Mc Graw Edison Co | Resistor assembly |
| FR2320000A1 (en) * | 1975-07-31 | 1977-02-25 | Acec | Support for resistors in transformer switch - has vert rectangular cavities each with helical resistor |
| EP0252400A2 (en) * | 1986-07-05 | 1988-01-13 | Maschinenfabrik Reinhausen Gmbh | Tap selector for tapped transformers equipped with a preliminary selector |
| CN101506913A (en) * | 2006-08-25 | 2009-08-12 | Abb技术有限公司 | A resistor for electric high-voltage apparatus and a method of mounting a resistor |
| CN101807472A (en) * | 2009-02-13 | 2010-08-18 | 上海华明电力设备制造有限公司 | Vacuum tube group for replacing copper-tungsten contact group of on-load tap changer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2434364C2 (en) * | 1974-07-17 | 1976-09-02 | Reinhausen Maschf Scheubeck | LOAD CHANGE-OVER SWITCH WITH SWITCHING RESISTORS FOR TAP-SWITCHES OF TAPPING TRANSFORMERS |
| DE3833126C2 (en) * | 1988-09-29 | 1995-11-30 | Reinhausen Maschf Scheubeck | Load selector for step transformers |
| DE4231353C2 (en) * | 1991-09-19 | 1997-07-24 | Toshiba Kawasaki Kk | Tap changer |
| DE9405427U1 (en) * | 1994-03-30 | 1995-04-27 | Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg | Load selector with switching resistors |
| DE19821775C1 (en) * | 1998-05-14 | 1999-10-14 | Reinhausen Maschf Scheubeck | Load selector for step transformer |
-
2011
- 2011-03-18 DE DE102011014325.4A patent/DE102011014325B4/en not_active Expired - Fee Related
-
2012
- 2012-02-20 EP EP12705134.0A patent/EP2686857B1/en active Active
- 2012-02-20 UA UAA201311093A patent/UA112177C2/en unknown
- 2012-02-20 CN CN201280012203.1A patent/CN103415904B/en active Active
- 2012-02-20 WO PCT/EP2012/052866 patent/WO2012126685A1/en active Application Filing
- 2012-02-20 BR BR112013018969-0A patent/BR112013018969B1/en not_active IP Right Cessation
- 2012-02-20 ES ES12705134.0T patent/ES2525130T3/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3546653A (en) * | 1969-06-02 | 1970-12-08 | Mc Graw Edison Co | Resistor assembly |
| FR2320000A1 (en) * | 1975-07-31 | 1977-02-25 | Acec | Support for resistors in transformer switch - has vert rectangular cavities each with helical resistor |
| EP0252400A2 (en) * | 1986-07-05 | 1988-01-13 | Maschinenfabrik Reinhausen Gmbh | Tap selector for tapped transformers equipped with a preliminary selector |
| CN101506913A (en) * | 2006-08-25 | 2009-08-12 | Abb技术有限公司 | A resistor for electric high-voltage apparatus and a method of mounting a resistor |
| CN101807472A (en) * | 2009-02-13 | 2010-08-18 | 上海华明电力设备制造有限公司 | Vacuum tube group for replacing copper-tungsten contact group of on-load tap changer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546010A (en) * | 2017-08-16 | 2018-01-05 | 芜湖市凯鑫避雷器有限责任公司 | A kind of transformer regulating winding construction |
| CN109637858A (en) * | 2018-12-12 | 2019-04-16 | 国网北京市电力公司 | Transformer switch group, transformer, transformer capacity transfer method and device |
| CN114072891A (en) * | 2019-07-01 | 2022-02-18 | 日立能源瑞士股份公司 | Tap changer barrier in a power transformer |
| CN114072891B (en) * | 2019-07-01 | 2024-02-27 | 日立能源有限公司 | Tap changer barrier in a power transformer |
| CN114450758A (en) * | 2019-09-27 | 2022-05-06 | 赖茵豪森机械制造公司 | Resistor device for a step switch and step switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103415904B (en) | 2016-09-07 |
| ES2525130T3 (en) | 2014-12-17 |
| BR112013018969B1 (en) | 2020-10-13 |
| EP2686857B1 (en) | 2014-09-03 |
| DE102011014325B4 (en) | 2014-11-27 |
| HK1189420A1 (en) | 2014-06-06 |
| DE102011014325A1 (en) | 2012-09-20 |
| UA112177C2 (en) | 2016-08-10 |
| WO2012126685A1 (en) | 2012-09-27 |
| EP2686857A1 (en) | 2014-01-22 |
| BR112013018969A2 (en) | 2016-10-04 |
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