Insulation condition assessment of transformer bushings by means of polarisation/depolarisation current analysis

S. Bhumiwat
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引用次数: 21

Abstract

This paper presents some practical experience of polarisation/depolarisation current (PDC) analysis on a number of condenser bushings having three different insulation designs-oil impregnated paper (OIP), synthetic resin bonded paper (SRBP) and resin impregnated paper (RIP). It suggests methods for performing successful on-site measurement. The document contains PDC measurement results and evaluation results of main insulation C1 for each type of bushing. It proves that the sensitivity in detecting insulation aging of the PDC technique is better than the conventional 50 Hz test.
用极化/去极化电流分析评价变压器套管绝缘状态
本文介绍了用三种不同绝缘设计——油浸纸(OIP)、合成树脂结合纸(SRBP)和树脂浸渍纸(RIP)对若干冷凝器轴套进行极化/去极化电流(PDC)分析的一些实践经验。它提出了进行成功的现场测量的方法。本文档包含各类型套管的配电柜测量结果和主绝缘C1的评定结果。结果表明,该方法检测绝缘老化的灵敏度优于传统的50 Hz试验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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