油浸式变压器绝缘含水量检测新方法  

Moisture Content Measurement for Oil-immersed Transformer Insulation

作　　者：李燕青[1] 雍靖[1] 李菱[1] 王德艳[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《华东电力》2011年第8期1285-1287,共3页East China Electric Power

摘　　要：电力变压器绝缘结构中的水分会降低其介电常数,使其过早老化,从而威胁变压器的正常安全工作,在变压器制造及使用中,监测绝缘纸板中的微水分十分重要。针对目前几种测定油浸纸绝缘含水量方法的弊端,介绍了一种新的测定方法——介电频谱法,并采用该方法举例分析变压器受潮故障,实践证明了该方法的实用性和可靠性。Since the presence of moisture in the transformer insulation structure can damage the safe performance of the transformer by shortening its service.Therefore,it is very important to monitor the moisture condition in pressboard during both manufacturing and operating process of a transformer.Considering the disadvantage of several existing methods for measuring the insulation moisture in oil-immersed paper,a new test method-dielectric spectrum method is introduced,and exemplified by a transformer damp failure analysis.The method has been proved practical and reliable.

关 键 词：变压器 微水分 介电频谱 

分 类 号：TM411[电气工程—电器]