摘要
为检测变压器绝缘介质中的水分,采用极化去极化电流(PDC)和频域介电谱(FDS)相结合的介电谱测试方法用于变压器现场测试。PDC和FDS测试方法可区分出绝缘油和绝缘纸中的水分含量,为变压器绝缘评估提供依据,两者相结合进行测试可有效缩短现场测试时间,测试实例说明开展变压器介电谱测试是可行的。
In order to detect moisture in transformer＇s insulating medium, the dielectric spectroscopy test method, which combined polar- ization and depolarization current （PDC） with frequency domain dielectric spectroscopy （FDS）, was used in transformers field test. The PDC and FDS test method could distinguish between the moisture content in the insulating oil and that of the insulating paper, which provided the basis for transformer insulation assessment. The combined test method can effectively shorten the time of field test and the test instance proves that the transformer dielectric spectroscopy test is feasible.
出处
《电工电气》
2012年第6期29-33,共5页
Electrotechnics Electric
关键词
电力变压器
极化去极化电流(PDC)
频域介电谱(FDS)
介电谱测试
power transformer
polarization and depolarization current
frequency domain dielectric spectroscopy
dielectric spectroscopy test
