Abstract

The power transformer is one of the main components in a power transmission network. Major faults of transformers can cause extensive damage. These faults do not only interrupt electricity supply but also result in large revenue losses. There are several methods for diagnosis of implicit faults in power transformer, one of them is diagnosis based on the Dissolved Gas Analysis (DGA) performed routinely using the technique of fuzzy logic. A fuzzy logic interpretation module which can be used for interpreting most of DGA test results has already been completed and discussed in this paper