ALGORITHM FOR FAILURE FREQUENCY AND DURATION ASSESSMENT OF COMPOSITE POWER-SYSTEMS

Failure frequency and duration (F&D) indices are important load-point and system parameters in composite generation and transmission system adequacy evaluation. Several papers have been published in the past fe w years that focus on developing algorithms for more accurate assessme nt of the F&D indices, and considerable progress has been made. A new efficient and effective algorithm is presented in the paper, which pro vides a more accurate assessment of the F&D indices, when compared wit h previous approaches, without increase in computational effort. The n ew algorithm also provides an estimate of the failure frequency with a n exact and controllable error limit. The required concepts are develo ped and illustrated using simple networks, and practical application i s illustrated using two reliability test systems.