The present invention discloses a method for panoramic intelligent
perception of the state of a distribution network, which relates to the technical field of distribution
network monitoring and management and is used to solve the problem of poor abnormal monitoring of the distribution network. Through precise acquisition and preprocessing of the node signals of the distribution network, the present invention realizes multi-scale
decomposition and baseline construction of the signals, effectively extracts the steady-state and abnormal dynamic characteristics of the distribution network, uses
variational mode decomposition technology, constructs a baseline by screening low-frequency
modes through the central frequency, and then combines the difference between the baseline and the original
signal to construct robust residuals and abnormal
energy indicators to accurately determine abnormal events. After an abnormal trigger, the distribution network nodes switch to the ultra-
high frequency sampling mode, use time-domain difference to extract local disturbance characteristics, and perform
noise reduction through
robust filtering, and adaptively adjust the filtering parameters according to the local edge ratio, so as to fully retain the abnormal edge information, thereby realizing real-time and high-precision
perception of the abnormal state of the distribution network and improving the response speed and accuracy of the panoramic
perception of the distribution network.