A reliability and economic evaluation of a transmission system-II: Using probability method

For Part I, see ibid., pp. 94-100 (1993). The reliability of a transmission system model consisting of transmission lines, transformers, and circuit breakers is calculated from sample data using the probability method. The results of this method differ by less than 0.7% from the results of Part I when the reliabilities of the circuit breakers are set to 100%. If the reliabilities of the circuit breakers are known and are different from 100%, this method must be used to obtain more accurate reliability.