Abstract:The Transformer is an important original for transmitting electrical energy or transmission signals from one circuit to another using the principle of electromagnetic induction. The power transformer is the core of energy conversion and transmission, and it is also the most critical equipment in the power grid. Whether the transformer runs normally is an important guarantee for the normal,reliable, stable, and economic operation of the power system. Therefore, the duty officer should prevent and reduce the transformer failure as much as possible, so as to prevent the accident from happening.