Electric energy quality prediction analysis method and system

The invention discloses an electric energy quality prediction analysis method and system, and the method comprises the steps: constructing a first matrix according to at least one influence factor and an electric energy quality index, and carrying out the mean value specification processing of the first matrix, and obtaining a second matrix; calculating association degree indexes between the influence factors and the power quality indexes in the second matrix, sorting the association degree indexes based on numerical values to obtain an association degree index sequence, and selecting at least one target association degree index from the association degree index sequence; classifying at least one influence factor, corresponding to the at least one target correlation index, of the harmonic source to be predicted to a certain electric energy quality parameter sample; and training influence factors of a certain electric energy quality parameter sample through a support vector machine regression algorithm, and pr