EP2566641A1 - Matériau isolant électrique, papier isolant et bande isolante pour une machine rotative haute tension - Google Patents

Matériau isolant électrique, papier isolant et bande isolante pour une machine rotative haute tension

Info

Publication number
EP2566641A1
EP2566641A1 EP11717543A EP11717543A EP2566641A1 EP 2566641 A1 EP2566641 A1 EP 2566641A1 EP 11717543 A EP11717543 A EP 11717543A EP 11717543 A EP11717543 A EP 11717543A EP 2566641 A1 EP2566641 A1 EP 2566641A1
Authority
EP
European Patent Office
Prior art keywords
tape
insulating
rotary machine
insulating material
paper
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Withdrawn
Application number
EP11717543A
Other languages
German (de)
English (en)
Inventor
Peter GRÖPPEL
Mario Brockschmidt
Friedhelm Pohlmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2566641A1 publication Critical patent/EP2566641A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H01B3/004—Inhomogeneous material in general with conductive additives or conductive layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/025—Other inorganic material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide

Definitions

  • the invention relates to an electrical insulation material for a high-voltage rotary machine, an insulation paper, which is made of the insulating material, and a Isolati ⁇ onsband, which is made from the insulation paper.
  • Insulation tape is suitable for electrical insulation in a high voltage rotary machine.
  • turbo-generator For a high-voltage rotary machine, such as a turbo-generator in a power plant for generating electrical energy, high efficiency and high availability are required. The result is usually a high mechanical, thermal and electrical DEMANDS ⁇ monitoring the components of the turbogenerator.
  • the turbogenerator has a stator winding to which an be ⁇ Sonders high demands with regard to strength and reliabil ⁇ stechnik is provided.
  • the insulation system of the stator winding is heavily loaded at the interface between the main insulation and the laminated core of the stator winding by a high thermal, thermomechanical, dynamic and electromechanical operating stress, whereby the risk of damage to the stator winding insulation system is high due to partial discharges during operation the high-voltage rotary machine occur incessantly.
  • electrical conductors wires, coils, rods, sub-conductors
  • a high voltage insulation ⁇ one differentiates the insulation between conductor elements (conductor insulation) between the conductors or windings (conductor or winding insulation) and between the conductor and ground potential in the tongue and winding area (main ⁇ insulation).
  • the operational safety of the high-voltage rota- Onsmaschine is significantly the reliability of Isolier ⁇ system determined.
  • a problem of the insulation system is that due to the high electrical load of the insulating material of the insulation system this is exposed to a partial discharge-induced erosion.
  • "treeing" channels are formed in the insulating material, which can lead to an electrical breakdown of the insulating material.
  • the addition of mica, for example in the form of mica paper, to the insulating material desirably prevents the propagation of "treeing" channels in the insulating material.
  • mica particles having an aspect ratio of at least 50 are used, i. the ratio of length to width on one side and the
  • Mica particles thickness on the other side is at least 50. This Minim ⁇ form the mica particles a large upper ⁇ surface, align the mica particles to each other. As a result, the mica paper is elastically bendable and mechanically stressable. Evoked by an interaction by van der Waals forces or hydrogen bonds between the surfaces of the mica particles, bond forces determined by the size of contact surfaces of adjacent mica particles result. Thus, the mica is flexible paper and thus may for example be wrapped around a elekt ⁇ step ladder. The mica paper may be further imgargnieret means of a reaction resin and ⁇ still represent the a good barrier for "treeing" channels. The mica particles are exposed to the partial discharges, so that it is desirable that the mica particles have a high partial discharge resistance.
  • a corona shielding tape as, for example, a fabric with the mica tape, wherein the mica tape is attached to the fabric with an adhesive.
  • the insulation ⁇ system has the corona protection band, are to be electrically insulated with the electrical conductors in the high-voltage rotary machine.
  • the thermal conductivity of the conventionally impregnated with epoxy resins mica tape with glass or polyester fabric as a carrier material is about 0.2 - 0.25 W / mK at room temperature. Because of this to be classified as low thermal conductivity of the corona strip, the heat generated during operation of the high-voltage rotary machine in the conductor can be delivered poorly to the stator.
  • thermally conductive Parti ⁇ angle to provide in the corona shielding such as Bromnitrid or diamond. Since these materials have virtually no positive influence on the electrical resistance of the insulation system due to their dimensions and their physical properties, it is indispensable that the corona protection band is nevertheless mixed with the mica.
  • the proportion of the additional particles, and mica in the insulation system is adjusted such that the proportion of the mica is so high that the thermal conductivity of Glimmtikbands is sufficiently high, and the proportion of the additional particles is such ge ⁇ ring, that the resulting electrical resistance of Glimmschutzbands is sufficiently high.
  • the object of the invention is to provide an electrical insulating material for a high-voltage rotary machine, an insulation patch made of the insulating material, and an insulating tape made of the insulating paper, the electrical insulation of the high-voltage rotary machine being effective.
  • the electric insulation material for a high-voltage rotary machine comprises a base resin and a filler powder distributed in the base resin as a single filler, which is formed of platelet-shaped particles of alumina.
  • the proportion of the filler powder is preferably between 50% by volume and 75% by volume, the proportion of the filler powder more preferably being 70% by volume. Further, it is preferred that the filler powder be present in particle sizes in the range of 0.002 to 150 ym.
  • the filler powder is preferably present in monomodal, bimodal or multimodal distribution.
  • the insulating paper according to the invention for a high-voltage rotary machine has the electrical insulating material.
  • the insulating tape according to the invention for a Hochwoodsro ⁇ tationsmaschine includes a carrier tape and a tape of an insulating paper, the band being applied from the insulation paper on the carrier tape and fixed. It is preferred that the tape is glued by the insulating paper on the carrier tape.
  • the only filler in the base resin is formed by plate-like alumina particles with which due to their special shape, the electrical resistance of the insulating materials ⁇ is high.
  • the thermal conductivity of the insulating material is by the provision of only the flaky aluminum oxide particles high, since the intrinsic Leit ⁇ ability of alumina at 25 - 40 W / mK, wohinge ⁇ gen conventional mica has a value of 1 W / mK.
  • the insulating material can be processed to an insulating paper, which can be processed according to the invention to form an insulating strip, which can advantageously be used for electrical insulation in a high-voltage rotary machine.
  • the proportion of the plate-like alumina particles in the base resin is preferably up to 70% by volume without deteriorating the mechanical and electrical properties of the insulating material.
  • With a Vo ⁇ lumen Heilllgrad of Vol.50% platelet-shaped aluminum oxide particles in the base resin results in a thermal conductivity of 0.8 W / mK of the insulating material.
  • the insulating tape has a high resistance to the formation of "treeing" channels in the insulation paper, thereby advantageously high Volumengnacllgrade possible by the plurgitchenför ⁇ -shaped aluminum oxide particles in the base resin are.
  • the insulating material has a high varnishleitfä ⁇ ability. Due to the inorganic structure of the plate-like alumina particles in the base resin, the insulating material has high temperature resistance.
  • An electrical insulating material for a high voltage rotating machine is formed of a base resin.
  • a filler is provided as uniformly as possible dispersed in the base resin is at ⁇ sorted.
  • Another filler in particulate form is not provided in the base resin.
  • the filler is a filler powder formed from platelet-shaped particles of alumina.
  • the proportion of the filler powder in the base resin is Zvi ⁇ rule 50 vol% and 75 vol%, preferably 70 vol.%.
  • the filler powder is present in particle sizes in the range of 0.002 ym to 150 ym. Furthermore, the filler powder is in monomodal, bimodal or multimodal distribution.
  • An insulation paper for a high voltage rotary machine is made with the electrical insulation material.
  • an insulation tape for a high voltage rotary machine is made with the insulation paper.
  • the insulation ⁇ band has a carrier band and a band of the Isolationspa ⁇ pier. The tape from the insulating paper is applied and fixed on the carrier tape, the tape being glued to the carrier tape by the insulating paper.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Bodies (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un matériau isolant électrique pour une machine rotative haute tension, contenant une résine de base et une poudre de charge dispersée dans la résine de base en tant que seule charge, constituée de particules d'oxyde d'aluminium en forme de plaquettes. Un papier isolant pour une machine rotative haute tension contient le matériau isolant électrique. Une bande isolante pour une machine rotative haute tension comporte une bande support et une bande de papier isolant, la bande de papier isolant étant appliquée et fixée sur la bande support.
EP11717543A 2010-05-07 2011-04-20 Matériau isolant électrique, papier isolant et bande isolante pour une machine rotative haute tension Withdrawn EP2566641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019721A DE102010019721A1 (de) 2010-05-07 2010-05-07 Elektrisches Isoliermaterial, Isolationspapier und Isolationsband für eine Hochspannungsrotationsmaschine
PCT/EP2011/056375 WO2011138173A1 (fr) 2010-05-07 2011-04-20 Matériau isolant électrique, papier isolant et bande isolante pour une machine rotative haute tension

Publications (1)

Publication Number Publication Date
EP2566641A1 true EP2566641A1 (fr) 2013-03-13

Family

ID=44544088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11717543A Withdrawn EP2566641A1 (fr) 2010-05-07 2011-04-20 Matériau isolant électrique, papier isolant et bande isolante pour une machine rotative haute tension

Country Status (6)

Country Link
US (1) US20130157042A1 (fr)
EP (1) EP2566641A1 (fr)
CN (1) CN102869467B (fr)
DE (1) DE102010019721A1 (fr)
RU (1) RU2534744C2 (fr)
WO (1) WO2011138173A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012205046A1 (de) * 2012-03-29 2013-10-02 Siemens Aktiengesellschaft Elektroisolationskörper für eine Hochspannungsrotationsmaschine und Verfahren zum Herstellen des Elektroisolationskörpers
DE102012205650A1 (de) 2012-04-05 2013-10-10 Siemens Aktiengesellschaft Isolierstoff für rotierende Maschinen
DE102012207535A1 (de) * 2012-05-07 2013-11-07 Siemens Aktiengesellschaft Isolierband-Material, Verfahren zur Herstellung und Verwendung dazu
DE102013201053A1 (de) * 2013-01-23 2014-07-24 Siemens Aktiengesellschaft Isolationsanordnung für eine Hochspannungsmaschine
DE102014204416A1 (de) * 2014-03-11 2015-09-17 Siemens Aktiengesellschaft Isolationsband, dessen Verwendung als elektrische Isolation für elektrische Maschinen, die elektrische Isolation und Verfahren zur Herstellung des Isolationsbandes
EP3151249A1 (fr) * 2015-09-29 2017-04-05 Siemens Aktiengesellschaft Papier d'isolation electrique pouvant etre impregne et procede de fabrication d'un papier d'isolation electrique
EP3179482A1 (fr) * 2015-12-10 2017-06-14 ABB Schweiz AG Dispositif conducteur doté d'une isolation pour machine électrique
CN106782763A (zh) * 2016-12-19 2017-05-31 东莞珂洛赫慕电子材料科技有限公司 一种含片状氧化铝的铝基介质浆料及其制备方法
CN106847375A (zh) * 2016-12-19 2017-06-13 东莞珂洛赫慕电子材料科技有限公司 一种含片状二氧化硅的铝基介质浆料及其制备方法
US10965235B2 (en) * 2017-03-31 2021-03-30 University Of Illinois At Urbana-Champaign High frequency electric motor, control system, and method of manufacture
DE102020212993A1 (de) 2020-10-15 2022-04-21 Siemens Energy Global GmbH & Co. KG Verfahren zur Verringerung einer von einem Eisenkern eines Transformators ausgehenden Geräuschbelastung, Eisenkern sowie Transformator

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JPS6083831A (ja) * 1983-10-14 1985-05-13 三菱電機株式会社 熱伝導性銅張り積層板
JP2756075B2 (ja) * 1993-08-06 1998-05-25 三菱電機株式会社 金属ベース基板およびそれを用いた電子機器
DE69941734D1 (de) * 1999-08-27 2010-01-07 Hitachi Ltd Isoliermaterial, elektrische wicklung und herstellungsmethode
RU2194323C2 (ru) * 2001-01-12 2002-12-10 Открытое акционерное общество "Всероссийский научно-исследовательский и проектно-конструкторский институт электровозостроения" Электроизоляционная теплопроводящая композиция
US6743830B2 (en) * 2001-03-07 2004-06-01 Innovative Construction And Building Materials Construction board materials with engineered microstructures
RU2231148C2 (ru) * 2002-09-06 2004-06-20 Общество с ограниченной ответственностью Научно-производственная фирма "Барс-2" Электроизоляционная композиция
US7553438B2 (en) * 2004-06-15 2009-06-30 Siemens Energy, Inc. Compression of resin impregnated insulating tapes
WO2005124790A2 (fr) * 2004-06-15 2005-12-29 Siemens Power Generation, Inc. Materiaux a conductivite thermique elevee alignes avec des resines
CN101423669A (zh) * 2008-12-04 2009-05-06 浙江工业大学 一种用于发热电缆的绝缘导热材料

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See also references of WO2011138173A1 *

Also Published As

Publication number Publication date
CN102869467B (zh) 2016-02-24
RU2534744C2 (ru) 2014-12-10
US20130157042A1 (en) 2013-06-20
WO2011138173A1 (fr) 2011-11-10
RU2012152608A (ru) 2014-06-20
CN102869467A (zh) 2013-01-09
DE102010019721A1 (de) 2011-11-10

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