Dynamic inversion method and system for power system fault diagnosis

The invention discloses a dynamic inversion method and system for power system fault diagnosis. The method comprises a wave recording step: defining a wave recording window period which comprises a detection wave recording period for wave recording before a disturbance event happens and a disturbance wave recording period for wave recording after the disturbance event happens and recording the data information of the detection wave recording period and the data information of the disturbance wave recording period by adopting the wave recording window period, a diagnosis and recording step: starting expert diagnosis of the disturbance event after the disturbance event is calm down and recording a diagnosis reasoning process, and a graphical dynamic display step: inverting the diagnosis andreasoning process according to the time sequence of the disturbance events in a graphical manner and displaying expert rules traversed by the diagnosis and reasoning process. According to the method,dynamic inversion of power