The invention discloses a power network
anomaly detection method and
system, and relates to the technical field of intelligent
power grid monitoring, and the method comprises the steps: constructing a
neuron-like power network
graph model, carrying out the node
processing of equipment, introducing a multi-factor anomaly
score function, and dynamically activating an abnormal node through combining with an improved Winner-Take-All mechanism; the connection weight is dynamically optimized through a topology-aware composite
gradient descent method, and a multi-layer neural
network structure is constructed to realize cross-layer
forward propagation and feedback adjustment; and establishing an abnormal path model in combination with the propagation
phase difference and the information entropy, identifying an abnormal path by using a propagation
score function and a weighted shortest path
algorithm, and carrying out fault tracing. According to the power network
anomaly detection method provided by the invention, the
neuron-like
graph model is constructed, and a multi-factor anomaly activation mechanism is introduced, so that comprehensive
perception of a
power grid node state under a multi-dimensional time characteristic can be realized, and the anomaly recognition sensitivity and the multi-point simultaneous activation capability are effectively improved.