METHODOLOGY AND COMPUTER PACKAGE FOR GENERATION RESCHEDULING

Generation rescheduling is a cost-effective way to enhance steady-stat e and dynamic security. The paper presents an improved formulation for generation rescheduling and develops an iterative solution procedure. The proposed method can be used to assist operators to eliminate pote ntial steady-state insecurity, dynamic insecurity, or their combinatio n. Steady-state security is established by the well known Cn - 1) crit erion which deals with thermal limits of transmission lines. Dynamic s ecurity is defined in such a fashion that transient stability of the s ystem is maintained under any of the contingencies which may occur at each end of every transmission line of a power system. An attractive f eature of the proposed method is that it is reliable, realistic and ea sy to understand since dynamic security is checked in the method by an integration procedure. Simulation results of a 36-machine 200-node pr actical power system are demonstrated.