Fast method to alleviate line overloads by corrective generation rescheduling and load shedding

This paper presents simple, efficient and fast technique for the alleviation of line overloads by corrective generation and/or load shedding. The developed method ensures that alleviation of the existing violations does not create any new violations. The proposed algorithm is superior to existing methods and, in some cases, significant smaller amount of load shedding is required. The sensitivity matrix and the Lagrangian function, which are needed in almost all of the existing methods, it is not used in the proposed method. The reconstruction of Jacobian-like matrices, and determination of their inverse at each new operating point during the optimization procedure are not required. It gives less computation time for the proposed method as compared to the existing methods. The proposed technique will find extensive applications in operational planning, security and contingencies studies, and the reliability evaluation of power systems. To validate the proposed method results for 6-bus and 14-bus sample test systems have been presented.