Abstract

This paper presents an on-line economic power dispatch method with security; it maintains the advantage of rapid calculation possessed by the classical dispatch approach and at the same time settles N and N — 1 security problems. The calculations are divided into two stages. The optimality of the problem is first obtained and then the feasibility is satisfied on condition that the optimality remains. No slack bus is concerned with, the on-line problem is considered, the storage requirements are small and computational accuracy is sufficiently high. The results of the IEEE 30-bus system are presented in order to demonstrate the efficiency.

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