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This paper is concerned with the investigation of a systematic corrective control approach for the transient emergency state problem of the power system. The proposed new control framework involves distributing the task of system transient stability margin improvement among several local facilities dedicated to the various subsystems comprising the power system. The functional design of the various local controllers to undertake local information processing and provide appropriate closed-loop stabilizing control action during severe transient disturbance is presented. An illustrative example is included to demonstrate the effectiveness of the proposed local control framework.