A computerized technique for reliability evaluation in power system transmission planning

Abstract The paper discusses two computer programs to calculate the composite system reliability indices, the loss of load probability and the expected demand not served, for use in long-range power system transmission expansion planning. The programs are based on the maximum-flow-minimum-cut technique and a decomposition principle which transforms the network capacity state space into nonoverlapping subsets to calculate the reliability indices. A modified version is also discussed in which the respective individual load reliability indices at each bus are determined. The programs have been applied to different test systems and typical results are presented in the paper.