An Analytical Approach Td Evaluate Probability Distributions Associated with the Reliability Indices of Electric Distribution Systems

Reliability indices of an electric distribution system are functions of factors such as component failures, repairs and restoration times which are random by nature. These indicies are, therefore, random variables and can be described by probability distributions. The mean values of the probability distributions associated with the reliability indices are very useful and conventional reliability analysis is normally only concerned with these values. There is, however, an increased awareness of the need to evaluate parameters which give information regarding the variation of the indices around their mean values. This paper presents 3n analytical approach to evaluate the probability distributions associated with the reliability indices of electric distribution systems with radial configurations. The results of a study on sample configuration are presented in this paper.