  This paper aims at assessing the power system reliability by estimating loss
of load (LOL) index using mutual information based Bayesian approach.
Reliability analysis is a key component in the design, analysis and tuning of
complex structure like electrical power system. Consideration is given to rare
events while constructing the Bayesian network, which provides reliable
estimates of probability distribution function of LOL with lesser computing
effort. Also, the ranking of load components due to loss of load is evaluated.
The RBTS and IEEE RTS-24 systems are used as test cases.
