Title :
Estimation of the Water Content in High Voltage Oil-impregnated Transformer Insulation
Author_Institution :
The Israel Electric Corporation, Haifa, Israel
Abstract :
This paper describes the possibility methods of estimation water content in oil impregnated cellulose insulation of HV transformer. The first method is based on measured or calculated relative humidity of transformer´s oil. This method is usable for energizing transformers. The second method is based on measured dielectric dissipation factor and capacitance of insulation zones of transformer and dielectric parameters of oil. This method is usable for no-energizing transformers.
Keywords :
Dielectric measurements; Dielectrics and electrical insulation; Humidity; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Solids; Temperature; Water; dielectric dissipation factor; large power transformer; oil impregnated cellulose insulation; water content in insulation;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 2006 IEEE 24th Convention of
Conference_Location :
Eilat, Israel
Print_ISBN :
1-4244-0229-8
Electronic_ISBN :
1-4244-0230-1
DOI :
10.1109/EEEI.2006.321103
