NDLI: Cole-cole diagram as diagnostic tool for dielectric liquids

Content Provider	IEEE Xplore Digital Library
Author	Martin, S. Vaclav, M. Pavel, T. Jiri, B. Josef, P. Petr, M.
Copyright Year	2011
Description	Author affiliation: Department Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, Pilsen, Czech Republic (Martin, S.; Vaclav, M.; Pavel, T.; Jiri, B.; Josef, P.; Petr, M.)
Abstract	Dielectric subsystems have an important influence on reliability, lifetime and power of electrical equipments. Study of dielectric parameters and their changes due to degradation mechanisms provide important information about the equipments. Paper deals with oil-paper systems and their thermal degradation. These systems are used for example in transformer, capacitors and bushings. Thermal degradation causes increasing of moisture content thus number of polar particles. Therefore the main idea of this paper is diagnostic of oil-paper insulation based on a method of polarization measurement. One of the methods is Cole-Cole diagram [1] or its modification e.g. Davidson [5], Havriliak-Negami [11]. The next aim of the paper is measurement of the system parameters (Complex permittivity, Viscosity, Acid value, Resistivity, Polarization index and Dissipation factor) and their changes due to thermal degradation. In experiments are used a normal and an environmental friendly fluid.
Starting Page	1
Ending Page	4
File Size	772804
Page Count	4
File Format	PDF
ISBN	9781424473526
ISSN	21533725
e-ISBN	9781424473557
e-ISBN	9781424473540
DOI	10.1109/ICDL.2011.6015448
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-26
Publisher Place	Norway
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Insulators Liquids Particle measurements Atmospheric measurements Moisture Reliability oil-paper system Cole-Cole diagram transformer oils dissipation factor polarization index complex permittivity
Content Type	Text
Resource Type	Article

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