Consideration of dependent outages in security-constrained adequacy evaluation of composite systems

A security-constrained adequacy evaluation technique for composite power systems to include the effect on the adequacy indices of dependent outages of system components is presented. The effect of these outages on the reliability indices at different load levels is examined and compared. The resulting system indices can be used to provide a physical appreciation of the various factors that influence the actual system reliability, and to alleviate some of the difficulties encountered by both power system planners and operators with traditional adequacy evaluation