Reactive voltage control data preprocessing module design method and system

The invention belongs to the technical field of data preprocessing, and the method comprises the steps: building a data preprocessing model according to a least square criterion, and carrying out the multi-scale data fusion; performing problem optimization through algorithm iteration, dynamically adjusting the Jacobian matrix to perform rapid and efficient data preprocessing, and keeping continuous updating of the Jacobian matrix; and after the Jacobian matrix is preprocessed, a data preprocessing calculation result is output, and reactive voltage optimization control is carried out. According to the method, calculation efficiency and calculation power consumption need to be taken into consideration during data preprocessing in actual engineering, the calculation efficiency can be improved by reducing the number of iterative calculation times of the Jacobian matrix by using a dynamic adjustment strategy of the Jacobian matrix, and the operation time consumption caused by calculation of the Jacobian matrix is