Dissolved Gas Analysis is an important analysis for fault diagnosis and condition monitoring of power transformer. The various technique such as conventional methods, Artificial Intelligence, Artificial Neural network, Fuzzy Expert system, Genetic algorithm etc can be used to increase the efficiency and accuracy of diagnostics system. Failures of power transformer can cause malfunction of system device or damage to apparatus. This paper presents the review of different techniques with their relative advantages and shortcomings. Dissolved Gas Analysis of the oil samples has been widely used fault diagnostic tool.
Dissolved Gas Analysis, Power Transformer, Fuzzy Logic, Fuzzy inference system, Artificial Neural Network, Expert System
