Reactive power and voltage control partition (VCA) can be described as a spatial clustering problems. Based on clustering method SAGA, the first to use the full dimension of the sensitivity matrix contains all nodes in the system to calculate the spatial electrical distance, multi-dimensional space constructed data set between nodes, the advantages of integration into the SA and GA fuzzy C-means clustering class algorithms, one for each node in the system partition. On IEEE39 node system to classify, validate the usefulness of the method, and reliability.