Transformers are the vital parts of an electrical grid system. A faulty transformer can destabilize the electrical
supply along with the other devices of the transmission system. Due to its significant role in the
system, a transformer has to be free from faults and irregularities. Dissolved Gas-in-oil Analysis (DGA)
is a method that helps in diagnosing the faults present in an electrical transformer. This paper proposes
a hybrid system based on Genetic Neural Computing (GNC) for analyzing and interpreting the data
derived from the concentration of the dissolved gases. It is further analyzed and clustered into four subsets
according to the standard C57.104 defined by IEEE using genetic algorithm (GA). The clustered data is
fed to the neural network that is used to predict the different types of faults present in the transformers.
The hybrid system generates the necessary decision rules to assist the system’s operator in identifying
the exact fault in the transformer and its fault status. This analysis would then be helpful in performing
the required maintenance check and plan for repairs.