Alleviation of line overloads and voltage violations by corrective rescheduling

This paper presents simple and efficient algorithms for the alleviation of line overloads and voltage violations by corrective rescheduling. The proposed approach utilises the decoupling of real and reactive power and the decomposition between optimisation without security constraints and optimisation to satisfy security constraints. Highlights of the proposed approach are: (i) a choice of performance index which ensures that alleviation of some of the existing violations does not create any fresh violations, thus avoiding the need for cycling in optimisation; and (ii) the use of a classical optimisation technique for faster solutions. Results for two sample test systems have been presented to validate the proposed algorithms