EP2689514A2 - Herstellungsverfahren eines elektrischen isolationssystems eines leiters in einem wickelkopf einer elektrischen maschine - Google Patents
Herstellungsverfahren eines elektrischen isolationssystems eines leiters in einem wickelkopf einer elektrischen maschineInfo
- Publication number
- EP2689514A2 EP2689514A2 EP12720128.3A EP12720128A EP2689514A2 EP 2689514 A2 EP2689514 A2 EP 2689514A2 EP 12720128 A EP12720128 A EP 12720128A EP 2689514 A2 EP2689514 A2 EP 2689514A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- insulation
- insulation system
- base resin
- main insulation
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/08—Insulating conductors or cables by winding
- H01B13/0891—After-treatment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
Definitions
- the invention relates to a method for producing an electrical insulation system for an electrical machine.
- a high-voltage machine such as a turbogenerator in a power plant for generating electrical energy
- the turbogenerator has a turbogenerator stand with a stator core and a plurality of generator winding bars, which are electrical conductors.
- the stator core has a
- the electrical insulation system covers each conductor and has the purpose of electrically insulating each conductor against adjacent conductors, against the stator core and against the environment.
- the insulation system has a main insulation, which envelops the conductor and forms interfaces with the stator core and the conductor. As a result of thermal or mechanical loading during operation of the high-voltage machine, the main insulation can lift off at these boundary surfaces, as a result of which cavities are formed. In these cavities sparks can be formed at high operating voltages, which are caused by partial electrical discharges. This electrical stress on the main insulation can lead to its damage.
- a weakly conductive internal potential control is provided.
- a weakly conductive and groundedassiglimmtik is provided, which wraps around the main insulation.
- the external corona protection extends starting from the stator core not completely on the Hauptisola ⁇ tion.
- the electric field strength is reduced starting from the inner potential control in the direction of the external corona protection.
- the degradation of the electric field is made more uniform by the provision of an end glow protection.
- the Endenglimmtik extends from the stator core facing away from the end of theêtmmtikes to the beginning of the winding head.
- the Endenglimmschutz To Ver ⁇ uniformity of the field strength of the Endenglimmschutz is formed with a material that has an increasing voltage, ie electric field strength, an exponentially decreasing electrical resistance.
- the Endenglimmschutz thus causes a field control.
- the Endenglimmschutz has partially conductive particles, wel ⁇ che are embedded in a polymer.
- the polymer is either part of a varnish or a band. If the polymer is part of the paint, the end corona protection is applied to the main insulation in an additional step after it has been impregnated and cured.
- the partially conductive particles are embedded in the polymer, which soaks through a fabric, a scrim or a non-woven.
- the polymer has a so-called B-state. This means that the polymer is present in egg ⁇ ner tack-free execution, in order to allow for further proces ⁇ processing of the tape at a high flexibility and strength.
- the polymer is partially crosslinked, so that the strip can be converted into its final form in a final curing.
- the final form of the belt is characterized by high temperature resistance and dimensional stability. The application of this volume before the ⁇ venezgntechnik the main insulation is disadvantageous because the polymer is a diffusion barrier that hinders the homogeneous and complete impregnation by the main insulation.
- the end corona protection strip is partly applied after impregnation and hardening of the main insulation and then thermally cured.
- the application of the Bandes on the main insulation after impregnation and before curing of the main insulation is not relevant for health reasons (contamination of employees with reactive resins).
- the partially conductive particles are suspended in the polymer.
- the paint is applied by dipping, spraying or painting in the appropriate places on the hardened main insulation. Subsequently, the paint is dried and cured.
- lacquers The problem with lacquers is that the layer thickness of the lacquer can fluctuate, which can lead to insufficient field control, which is insufficient to sufficiently prevent partial discharges.
- the object of the invention is to provide a method of making an electrical insulation system for an electrical machine with a ⁇ Ma Endenglimmschutz, wherein the life of the insulation system is increased and its Her ⁇ position is easy.
- the inventive method for producing an electrical insulation system for an electrical machine comprises the following steps: applying a porous Kleinisolati ⁇ onspapiers on a conductor of the electric machine; On- bring a porous Endglimmschutzpapier on the main ⁇ insulation paper, whereby a Isolationsroh redesign of the insulation system is formed; By impregnating the Isolationsroh ⁇ body with a base resin, wherein the Endenglimmschutzpapier and the main insulation paper have such a porosity that the Isolationsroh redesign is saturated with the base resin to form a homogeneous base resin matrix; Completing the insulation system.
- the method according to the invention preferably has the step of curing the base resin so that the insulation system is completed.
- the main insulation paper has before ⁇ Trains t on mica paper, alumina paper and / or crepe paper.
- the Endenglimmschutzpapier preferably has a Parti ⁇ kelverbund from partially conductive particles, in particular silicon carbide particles, or particles with microvaristors ei ⁇ ner partially conductive coating.
- the main insulation paper preferably has a support structure which increases the mechanical strength of the main insulation paper.
- the final corona protection paper preferably has a carrier structure which increases the mechanical strength of the final corona protection paper.
- the support structure is preferably a woven fabric, a Ge ⁇ put and / or a nonwoven, wherein the support structure is glued to the denklimmstoffpapier ene.
- FIG. 1 shows one Cross section of a turbogenerator stand with an insulation system produced by the method according to the invention.
- a turbine generators torformatr 1 a stator core 2, from which a Genera ⁇ torwicklungsstab 3 protrudes.
- the generator winding rod 3 is surrounded by a main insulation 4, wherein the winding rod 3 is arranged with its main insulation 4 and with its one end outside of the stator core 2.
- a conspiracyglimmschutz 5 is provided, which sheathed the main insulation 4 and is grounded to a grounding 6.
- Au ⁇ ßerdem is provided an inner potential controller 7 at the exposed longitudinal end of the main insulation. 4
- the end corona protection 8 envelops the main insulation 4.
- a main insulation paper is applied to the generator winding rod 3.
- An end corona protection paper is applied to the main insulating paper, starting from the internal potential control up to the distance from the stator core, on which the stator core facing away from the end of the outer corona shielding 5 is provided, whereby an insulation ⁇ raw body is formed.
- the insulating raw body is impregnated by a base resin, wherein the final corona protection paper and the main insulating paper have a porosity such that the insulating raw body is impregnated by the base resin to form a homogeneous base resin matrix.
- the insulation system is cured by applying heat.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011075425A DE102011075425A1 (de) | 2011-05-06 | 2011-05-06 | Verfahren zum Herstellen eines elektrischen Isolationssystems für eine elektrische Maschine |
PCT/EP2012/057482 WO2012152580A2 (de) | 2011-05-06 | 2012-04-24 | Verfahren zum herstellen eines elektrischen isolationssystems für eine elektrische maschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2689514A2 true EP2689514A2 (de) | 2014-01-29 |
Family
ID=46052723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12720128.3A Withdrawn EP2689514A2 (de) | 2011-05-06 | 2012-04-24 | Herstellungsverfahren eines elektrischen isolationssystems eines leiters in einem wickelkopf einer elektrischen maschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140083592A1 (de) |
EP (1) | EP2689514A2 (de) |
CN (1) | CN103765731A (de) |
DE (1) | DE102011075425A1 (de) |
WO (1) | WO2012152580A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013200499A1 (de) | 2013-01-15 | 2014-07-17 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Ausbilden eines Glimmschutzes |
JP6165836B2 (ja) * | 2013-02-25 | 2017-07-19 | 株式会社日立製作所 | 回転機 |
DE102014203744A1 (de) * | 2014-02-28 | 2015-09-03 | Siemens Aktiengesellschaft | Leitfähiges Glimmschutzpapier, insbesondere für den Außenglimmschutz |
DE102014203740A1 (de) | 2014-02-28 | 2015-09-03 | Siemens Aktiengesellschaft | Glimmschutzsystem, insbesondere Außenglimmschutzsystem für eine elektrische Maschine |
DE102014208857A1 (de) | 2014-05-12 | 2015-11-12 | Siemens Aktiengesellschaft | Glimmschutzsystem für eine Hochspannungsmaschine, Reparaturlack und Herstellungsverfahren |
EP3402050A1 (de) * | 2017-05-12 | 2018-11-14 | ABB Schweiz AG | Isolierter draht einer spule für einen wildgewickelten stator |
WO2018206222A1 (en) * | 2017-05-12 | 2018-11-15 | Abb Schweiz Ag | Insultated wire of a stator winding comprising grounding by conducting layer |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127470A (en) * | 1959-02-24 | 1964-03-31 | Asea Ab | Insulation for electrical conductors |
US3811005A (en) * | 1972-02-23 | 1974-05-14 | Westinghouse Electric Corp | Glass-mica composite structure containing dephenyl oxide b-stage resin |
US4091139A (en) * | 1975-09-17 | 1978-05-23 | Westinghouse Electric Corp. | Semiconductor binding tape and an electrical member wrapped therewith |
US4286010A (en) * | 1979-10-05 | 1981-08-25 | Essex Group, Inc. | Insulating mica paper and tapes thereof |
JPS60170434A (ja) * | 1984-02-14 | 1985-09-03 | Toshiba Corp | 電機巻線およびその製造方法 |
WO1993006646A1 (de) * | 1991-09-13 | 1993-04-01 | Siemens Aktiengesellschaft | Imprägnierbare anordnung aus einem trägerkörper und wicklungselementen |
DE4218969A1 (de) * | 1992-06-10 | 1993-12-16 | Asea Brown Boveri | Verfahren zur Fixierung von Wickelköpfen elektrischer Maschinen und Mittel zur Durchführung des Verfahrens |
DE4244298C2 (de) * | 1992-12-28 | 2003-02-27 | Alstom | Isolierband und Verfahren zu seiner Herstellung |
DE10227227A1 (de) * | 2002-06-18 | 2004-01-22 | Siemens Ag | Glimmschutz |
WO2006118536A1 (en) * | 2005-05-04 | 2006-11-09 | Abb Research Ltd. | Electric insulation material, an electric device and a method for producing an electric insulation material |
EP1736998A1 (de) * | 2005-06-21 | 2006-12-27 | Abb Research Ltd. | Band mit Varistor-Verhalten zur Steuerung eines elektischen Feldes |
EP1903662A1 (de) * | 2006-09-25 | 2008-03-26 | Abb Research Ltd. | Drehende Hochspannungsmaschine und damit versehene elektrische Anlage |
DE102009039456A1 (de) * | 2009-08-31 | 2011-03-03 | Siemens Aktiengesellschaft | Leitereinrichtung sowie elektrische Maschine |
-
2011
- 2011-05-06 DE DE102011075425A patent/DE102011075425A1/de not_active Withdrawn
-
2012
- 2012-04-24 EP EP12720128.3A patent/EP2689514A2/de not_active Withdrawn
- 2012-04-24 CN CN201280022066.XA patent/CN103765731A/zh active Pending
- 2012-04-24 US US14/115,346 patent/US20140083592A1/en not_active Abandoned
- 2012-04-24 WO PCT/EP2012/057482 patent/WO2012152580A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012152580A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012152580A3 (de) | 2013-09-12 |
CN103765731A (zh) | 2014-04-30 |
WO2012152580A2 (de) | 2012-11-15 |
US20140083592A1 (en) | 2014-03-27 |
DE102011075425A1 (de) | 2012-11-08 |
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Legal Events
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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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Effective date: 20131024 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HILDINGER, THOMAS Inventor name: KEMPEN, STEFAN Inventor name: GROEPPEL, PETER Inventor name: POHLMANN, FRIEDHELM Inventor name: LANG, STEFFEN |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT Owner name: VOITH PATENT GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20181101 |