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Title

Wykorzystanie elektrycznych schematów zastępczych próbek izolacji celulozowo-olejowej do symulacji charakterystyk napięcia powrotnego

Authors

Title variant

EN The use of the equivalent circuits of the samples of cellulose-oil insulation for the simulation of return voltage domains

Year of publication

2014

Published in

Poznan University of Technology Academic Journals. Electrical Engineering

Journal year: 2014 | Journal number: Issue 78

Article type

scientific article

Publication language

polish

Keywords
PL
  • spektroskopia częstotliwościowa
  • izolacja celulozowo-olejowa
  • transformatory energetyczne
  • napięcie powrotne
Abstract

PL W artykule przedstawiono możliwość wykorzystania programu PSpice Schematics pod kątem zastosowania schematów zastępczych próbek izolacji celulozowo-olejowej do analizy napięcia powrotnego. Opisano również główne przyczyny awarii transformatorów energetycznych oraz jedną z nowoczesnych metod używanych do diagnostyki transformatorów, tzn. spektroskopię częstotliwościową dielektryków (FDS).

EN The article describes one of the methods used for the diagnosis of power transformers frequency dielectric spectroscopy FDS. With the obtained measurements can determine model parameters Cola-Cola (ɛs, ɛ∞, α, τ), which will enable the appointment of the substitute schem elements cellulose insulation oil. Designated RC elements designed the substitute schema in PSpice Schematics program allows to carry out computer simulation. The time constants specifying the polarization relaxation mechanisms are simulated as a combination of RC elements. Relaxation mechanisms occurring in isolation diagnosed determines the number of serial RC branch connected to the scheme. The analysis of the characteristics through computer simulations allow recovery voltage assess the impact of the degree of moisture and temperature insulation cellulose-oil. The article also presents the possibility of using a PSpice Schematics under an angle suitability characteristics obtained to analysis the voltage a return.

Pages (from - to)

113 - 119

Presented on

Computer Applications in Electrical Engineering 2014, 28-29.04.2014, Poznań, Polska

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Ministry points / journal

9

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