Three-bus four-section standby power automatic operation device self-adaption in service and out of service control method

The invention discloses a three-bus four-section standby power automatic operation device self-adaption in service and out of service control method. The method comprises the steps of before standby power automatic operation device is in service under a voltage of 10 kV, calculating the transformer load condition after the spare power automatic switching is performed the by using an algorithm of summation of effective values of bilateral current, so that the problem that a transformer is overloaded after automatic operation is solved; simultaneously providing an intelligent equalization load function of the standby power automatic operation device in a three-bus four-section connecting method, choosing whether the equalization load function is performed or not intelligently according to a load situation of an inlet wire, and improving the usage efficiency of the transformer; and monitoring and calculating the load situation in real time after the standby power automatic operation device is in service, and load intertripping is performed automatically when the transformer is overloaded, so that the safety of the transformer is guaranteed. According to the method, logical data acquisition quantity of a whole action is small, a device is convenient to implement and the engineering popularization applicability is good.