Distribution Automation System

Disclosed is a power distribution automation system. The power distribution automation system comprises a power distribution automation master station, a plurality of transformer substations which are connected with the power distribution automation master station through an SDH optical fiber backbone network, and a plurality of power distribution automation terminals which are connected with the transformer substations through an optical fiber ring network. The power distribution automation system improves power distribution reliability, improves the network distribution planning level, lowers power grid line loss, improves the network distribution dispatching management level and improves first-aid repair working efficiency.