REEVALUATION OF THE NORMAL OPERATING STATE CONTROL OF THE POWER SYSTEM USING COMPUTER CONTROL AND SYSTEM THEORY.

A three-stage dispatch algorithm is proposed to dispatch economically the load imposed on the area by the customers, while maintaining frequency and tie line schedules. The three stages of the algorithm involve successively shrinking time horizons (one day, one half hour, and one half minute) along with detailed knowledge of the actual load variations and progressively more detailed descriptions of the system. Each algorithm stage draws on the results of the preceding stage and retains those features of the results which depend on the longer horizon of the preceding stage.