The invention provides a
power grid data restoration method and
system based on Huber norm
tensor decomposition, and belongs to the technical field of intelligent power grids and high-dimensional
data processing. The method comprises the following steps: constructing multi-source and multi-dimensional
power grid load data into a high-dimensional
tensor structure; a Huber norm-based
tensor decomposition model is adopted as a core reconstruction engine, through differential punishment of different residual errors,
random noise is effectively suppressed, key abnormal
modes such as
electricity stealing are reserved, and excessive
smoothing of abnormal features by a traditional method is avoided; efficiently solving the low-rank
factor matrix of the tensor by using a stochastic optimization
algorithm; and finally, realizing accurate filling of massive missing values in the
original data through the reconstructed
factor matrix. According to the method, the restoration precision and robustness of the
power grid data containing
noise and abnormal values can be remarkably improved, a high-
quality data basis is provided for subsequent advanced analysis tasks such as
electricity larceny detection and load prediction, and the method has important practical application value.