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Paper Information

Title: 

APPLICATION OF RELAXATION DISTRIBUTION FUNCTION IN DIAGNOSTIC OF POWER TRANSFORMER INSULATION

Type: PAPER
Author(s): SHAYEGANI AMIR ABBAS,MOHSENI HOSSEIN,BORSI HOSSEIN,GOCKENBACH ERNST,HASSAN OMAR
 
 
 
Name of Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVANIR
Date:  2004Volume 19
 
 
Abstract: 

IN THIS PAPER THE RELAXATION DISTRIBUTION FUNCTION, WHICH IS OBTAINED FROM MEASURING THE POLARIZATION AND DEPOLARIZATION CURRENT (PDC) ON OIL-PRESSBOARD SAMPLES, WILL BE PRESENTED. THE SAMPLES HAVE BEEN AGED AT 115OC WITH FE, CU AND ZN CONTENTS AS CATALYST IN ORDER TO SIMULATE THE STRESS CONDITIONS. FOUR SAMPLES HAVE BEEN AGED FOR 250, 500, 1000, 2000 HOURS. TESTS HAVE BEEN MADE ALSO ON FOUR MOISTURIZED SAMPLES. DEPOLARIZATION CURRENT CURVES ARE DECOMPOSED TO BASIC RELAXATION FUNCTIONS. THE RESULTS OBTAINED SHOW CLASSIFICATION OF SAMPLES TO DRY AND WET IS POSSIBLE. ALSO, THE QUALITY OF OIL CAN BE DETERMINED FROM THE RELAXATION DISTRIBUTION FUNCTION. AGING STATE OF THE SAMPLES HAS AN IMPACT ON THE MEASURING RESULT AND THE DEGREE OF AGING OF THE INSULATION CAN BE DISTINGUISHED.

 
Keyword(s): TRANSFORMER INSULATION, DIAGNOSTICS, DIELECTRIC RESPONSE, MOISTURE CONTENTS, AGING, RELAXATION DISTRIBUTION
 
 
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