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Insulation systems having improved partial discharge resistance, and method for producing same

A discharge, systematic technology, applied in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve problems such as erosion

Inactive Publication Date: 2019-01-18
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] A disadvantage of the known systems, especially those based on epoxy resins, is that the polymer matrix undergoes rapid decomposition under partial discharge stress, referred to here as erosion

Method used

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  • Insulation systems having improved partial discharge resistance, and method for producing same
  • Insulation systems having improved partial discharge resistance, and method for producing same
  • Insulation systems having improved partial discharge resistance, and method for producing same

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Embodiment Construction

[0043] figure 1 Taking bifunctional organosilane as an example, the general mechanism of in-situ particle crosslinking is schematically shown. In principle, the silane can have 1 to 4 reactive functional groups in order to exert a favorable influence on corrosion resistance. These functional groups have the characteristics of being able to react with the particle surface, thereby obtaining a wide band of organosilanes.

[0044] figure 1 The bifunctional silanes proposed in R 1 =hydroxyl, alkoxy, halogen, glycidoxy; R 2 = Alkyl, glycidoxy, vinyl, propyl succinic anhydride, and methacryloxy propyl The mechanism of crosslinking particles indicates the R on the silane 1 The base is replaced by nanoparticles. R 2 It can also be amidated, sulfurized, oxidized or H. "Amidated, oxidized, sulfurized" means other organic groups R' 2 Bonded to silicon via nitrogen, oxygen or sulfur.

[0045] Both particles 1 and 2 replace the radical R on the silicon core 3 2 (For example, under the condit...

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Abstract

The invention relates generally to the field of insulating electric conductors against partial discharge and specifically to a method for producing an insulation system having improved partial discharge resistance and to an insulation system having improved partial discharge resistance. The invention shows for the first time the surprising erosion-inhibiting effect of adhesion promoters, such as organic silicon compounds, added to resin when admixing nano particulate fillers. As a result of the introduction of the adhesion promoters into the resin before the nano particulate filler, surprisingly good results are achieved. It is discussed whether the good results, as indicated in figures 2 to 4, can be attributed to a type of particle wetting of the nano particles as a result of particle wetting with the organosilanes. In any case, it can convincingly be shown that the admixture of adhesion promoters with the resin before the addition of the nano particulate filler can provide considerable advantages.

Description

[0001] This application is a divisional application of the invention patent application with the application number 201280045367.4 (PCT / EP2012 / 067141) and the filing date on September 3, 2012. Technical field [0002] The invention relates to the field of insulation of electrical conductors against partial discharges, in particular to a method for preparing an insulation system with improved resistance to partial discharges and an insulation system with improved resistance to partial discharges. Background technique [0003] In rotating electrical machines such as motors or generators, the reliability of the insulation system has a decisive effect on its operational safety. The purpose of the insulation system is to electrically insulate electrical conductors (metal wires, coils, rods) from each other and the stator core or surroundings for a long time. In high-voltage insulation, it is divided into the insulation between winding segments (winding segment insulation), the insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/00H01B3/04H01B3/40H01B19/02H01B19/04B82Y30/00
CPCB82Y30/00H01B3/002H01B3/04H01B3/40H01B19/02H01B19/04
Inventor P.格勒佩尔D.海因尔C.迈希斯纳I.里特贝格
Owner SIEMENS AG
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