EIS aging estimation and threshold values

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F16%3A43929671" target="_blank" >RIV/49777513:23220/16:43929671 - isvavai.cz</a>

Výsledek na webu

<a href="http://ieeexplore.ieee.org/document/7800684/" target="_blank" >http://ieeexplore.ieee.org/document/7800684/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICHVE.2016.7800684" target="_blank" >10.1109/ICHVE.2016.7800684</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EIS aging estimation and threshold values

Popis výsledku v původním jazyce

The aging of electrical insulation material is one of the main topics for designers of electrical appliances. Much effort has been devoted to prepare statistical or physical methods of life time estimation in real operation of electric machinery. One of the problems in the estimation of insulation operational life is the existence of threshold values at which the change of aging mechanisms occurs. The following is a rule for aging tests: aging must be performed so that the aging mechanism is the same as that in real operation. However, properly distinguishing different aging mechanisms is a real challenge. It can be expected that electrical insulating systems of high voltage machinery are operating under threshold value in case of electrical aging. We can determine the aging mechanism in a variety of ways, e.g., from aging data of large rotary machines and transformers, where the insulation systems were traditionally designed to encounter electrical stress under three kilovolts per millimeter. From more than fifty years of aging data, we can find examples of electrically unaged insulation. Of course, other aging mechanisms occur during this time (thermal, PDs, mechanical, etc.). Aging tests become disproportionately long, as we attempt to approach a level of operating stress. A method to estimate a threshold value for specific aging parameters is presented in this paper on example of thermal aging.

Název v anglickém jazyce

EIS aging estimation and threshold values

Popis výsledku anglicky

The aging of electrical insulation material is one of the main topics for designers of electrical appliances. Much effort has been devoted to prepare statistical or physical methods of life time estimation in real operation of electric machinery. One of the problems in the estimation of insulation operational life is the existence of threshold values at which the change of aging mechanisms occurs. The following is a rule for aging tests: aging must be performed so that the aging mechanism is the same as that in real operation. However, properly distinguishing different aging mechanisms is a real challenge. It can be expected that electrical insulating systems of high voltage machinery are operating under threshold value in case of electrical aging. We can determine the aging mechanism in a variety of ways, e.g., from aging data of large rotary machines and transformers, where the insulation systems were traditionally designed to encounter electrical stress under three kilovolts per millimeter. From more than fifty years of aging data, we can find examples of electrically unaged insulation. Of course, other aging mechanisms occur during this time (thermal, PDs, mechanical, etc.). Aging tests become disproportionately long, as we attempt to approach a level of operating stress. A method to estimate a threshold value for specific aging parameters is presented in this paper on example of thermal aging.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

ICHVE 2016 - International Conference on High Voltage Engineering and Application : summary book

ISBN

978-1-5090-0496-6

ISSN

—

e-ISSN

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Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

Piscataway

Místo konání akce

Chengdu, China

Datum konání akce

19. 9. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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