The invention provides a low-
voltage transformer area topology intelligent identification method and
system, and relates to the technical field of electrical monitoring, and the method comprises the steps: executing double-layer disturbance splitting according to first
time sequence measurement data, and generating second
time sequence measurement data with a disturbance
label; according to the non-abnormal interval, executing node response
differential analysis to generate first association relationship data; extracting a
voltage sag slope, a sag starting point, a
recovery speed and a node response sequence to form a transient
feature vector, and correcting the first association relationship data according to the transient
feature vector to generate second association relationship data; verifying perturbation section
voltage fluctuation periodicity, identifying cross-
branch response offset, and adjusting the second association relationship data to generate final association relationship data; reconstructing a
branch structure, and determining an affiliation relationship among a
trunk node, a
branch node and an end node through node order consistency and association strength; according to the invention, the autonomy and accuracy of low-voltage
transformer area topology intelligent identification are improved.