Noise Diagnostics of Insulating Materials for Operation at High Temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F01%3APU23918" target="_blank" >RIV/00216305:26220/01:PU23918 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Noise Diagnostics of Insulating Materials for Operation at High Temperature

Popis výsledku v původním jazyce

The samples of insulation materials for operation at temperatures to 350 oC were tested in a high electric field. Tested materials covered with metal electrodes on both sides represent a parallel plate capacitor. The VA characteristics are proportional to U^n where n ~ 1. Partial discharges have an impact on conductivity at a high electric field and they are important sources of noise and acoustic emission signals. This phenomenon is related to the sample homogeneity and may be used for technology assesssment and quality testing. The electromagnetic signal precedes the acoustic emission response and the time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. This phenomenon may be used for the localization of voids in an insulator. A current pulse generated by a random discharge in a void within the insulator is represented by an exponentially decreasing function, whereas the acoustic signal exhibits a quasiperiodic dampe

Název v anglickém jazyce

Noise Diagnostics of Insulating Materials for Operation at High Temperature

Popis výsledku anglicky

The samples of insulation materials for operation at temperatures to 350 oC were tested in a high electric field. Tested materials covered with metal electrodes on both sides represent a parallel plate capacitor. The VA characteristics are proportional to U^n where n ~ 1. Partial discharges have an impact on conductivity at a high electric field and they are important sources of noise and acoustic emission signals. This phenomenon is related to the sample homogeneity and may be used for technology assesssment and quality testing. The electromagnetic signal precedes the acoustic emission response and the time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. This phenomenon may be used for the localization of voids in an insulator. A current pulse generated by a random discharge in a void within the insulator is represented by an exponentially decreasing function, whereas the acoustic signal exhibits a quasiperiodic dampe

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F99%2F1088" target="_blank" >GA102/99/1088: Šumová spektroskopie a diagnostika elektroizolačních soustav s vysoce tepelně odolnými materiály</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of ICNF 2001

ISBN

981-02-4677-3

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

759-762

Název nakladatele

University of Florida, Gainesville, Florida, USA

Místo vydání

Gainesville, Florida, USA

Místo konání akce

Gainesville Florida USA

Datum konání akce

22. 10. 2001

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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