The invention provides a power
system load online prediction method based on a space-time dynamic graph, and belongs to the technical field of
time series prediction, and the method comprises the following steps: S1, power
system time series data collection; s2, constructing a space-time dynamic
graph model, wherein a main body of the space-time dynamic
graph model is composed of a
time domain convolutional network (TCN) and a graph convolutional network (GCN); s3, constructing an online
time domain convolution module; s4, constructing an online graph
convolution module which comprises a matrix polynomial, a graph drift sensing mechanism and a graph
memory module; the method aims to construct a
time series online prediction model based on a space-time dynamic graph by using power
system load data, the whole model captures space-
time correlation of the power system load data through a
time domain convolutional network TCN and a graph convolutional network GCN, a dynamic
adjacency matrix is generated based on a matrix polynomial in a GCN module, and the dynamic
adjacency matrix is predicted and trained online. And modeling the evolution trend of the
transformer association mode to improve the accuracy of online prediction of the time series of the power system.