Island operation circumstance can endanger safe and stable operation of power system and its occurrence needs to be monitored with the specified time. In this paper

the logical regression algorithm is introduced to the island operation monitoring. Firstly

the accurate distribution generation system model is set up in the environment of Matlab. The model considers various possible island operating states

minimum monitoring area

multiple distributed power supplies

various operating conditions and different network topologies

and then trains the model by the use of data feature quantity under various island operating conditions in the tensor flow environment. Finally

the trained model is used to monitor the island status and feasibility of the method is shown by the result.