Influence of Nonstandard Voltage Stresses on Transformer Insulation Paper

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00317576" target="_blank" >RIV/68407700:21230/17:00317576 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/CEIDP.2017.8257543" target="_blank" >http://dx.doi.org/10.1109/CEIDP.2017.8257543</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/CEIDP.2017.8257543" target="_blank" >10.1109/CEIDP.2017.8257543</a>

Result language
angličtina
Original language name
Influence of Nonstandard Voltage Stresses on Transformer Insulation Paper
Original language description
Over the last few years, nonstandard voltage stresses have begun to occur in electrical power systems as a consequence of power electronics usage. Power semiconductors contribute to the advanced management and current quality control of power flow. A mutual interaction between switching pulses, emitted by power electronics, and passive parameters of power system produce high-frequency harmonics and oscillating impulses. These distortions are superimposed on operating voltage of power frequency and stress the insulation system. This additional voltage stress can accelerate degradation processes and subsequently decrease the lifetime of insulation systems. Standard aging models have to be verified to respect these effects. For this purpose, corresponding laboratory measurements are needed. Due to the fact,that the oil filled paper insulation is the most used insulation, the laboratory experiments were focused on this type of combined insulation. Voltage-time characteristics of transformer insulation paper were measured and evaluated for the case of standard sinusoidal power frequency voltage stresses, and the case of sinusoidal power frequency voltage stresses with superimposed high frequency oscillation impulses.
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of 2017 IEEE Conference on Electrical Insulation and Dielectric Phenomena
ISBN
978-1-5090-4653-9
ISSN
—
e-ISSN
—
Number of pages
4
Pages from-to
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Publisher name
IEEE
Place of publication
Piscataway
Event location
Fort Worth
Event date
Oct 22, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000428013100136

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