Off-line strategy table optimization method and device based on transient stability control

The invention discloses an offline strategy table optimization method and device based on transient stability control, and the method comprises the steps: extracting online operation modes at different moments during the online operation of a power system, carrying out the offline operation, generating an online strategy table corresponding to a non-passing moment, carrying out the clustering analysis of the online strategy table, and carrying out the clustering analysis of the online strategy table. Comparing a feature online strategy table obtained by clustering analysis with an offline strategy table, if the two have a difference, determining sub-feature quantities different from the offline strategy table, respectively calculating the sensitivity of the power system to the sub-feature quantities, and combining a plurality of sub-feature quantities with the highest sensitivity with the feature quantities corresponding to the offline strategy table to obtain a plurality of sub-feature quantities; and finall