Analysis on the Causes of Transformer Failure

At the same time ethyne was found in the oil of two 220 kV transformers.After long time tracing,the different failure parts were determined by various methods,and these failures were solved through proper measures.This paper proposed that it should avoid aimless actions of lifting transformer case which would cause possible secondary damage to equipment and unnecessary losses.Therefore,as key procedure for equipment smooth operation it is concluded that much more attention should be paid to the supervision during equipment installation and to the installation test records of hidden parts.