This paper introduces the mode and tripping condition of 110 kV automatic bus transfer equipment in detail,and puts emphasis on analysis of automatic bus transfer equipment in charging/discharging condition and action process.It also elaborates the cause of malfunctions of automatic bus transfer equipment and the serious consequences of the improper action to power grid and equipment,with putting forward the corresponding solutions and measures,and provides a reference for dispatching operators to deal with similar situations in future work.