The invention discloses a CVT running state evaluation method and
system based on an improved decoding layer model, and relates to the technical field of
electric power measurement online monitoring, and the method comprises the steps: obtaining CVT data, and carrying out the
hysteresis operation; constructing a CVT operation state evaluation model, wherein the CVT operation state evaluation model comprises an embedding layer, an improved
transformer decoding layer, a CloFormer layer and a distribution
estimation layer; the improved transform decoding layer comprises a first normalization layer, an attention layer, a second normalization layer and a feedforward neural layer; generating an embedded variable through an embedded layer, normalizing the embedded variable, and inputting the normalized embedded variable into an improved transform decoding layer; carrying out
feature extraction by utilizing a CloFormer layer; the distribution
estimation layer is a
Gaussian distribution model, an optimal parameter group is determined by using an EM
algorithm and a BIC criterion, and model training is carried out to obtain a final CVT operation state evaluation model; and inputting real-time CVT data into the final model to obtain the running state of the CVT.