Component Reliability Parameters of Distribution Network

This paper deals with reliability of distribution network and component reliability calculated from failures data bases. Reliability indices are possible to retrieve only from accurate databases of distribution companies. Such a database includes records of outages and interruptions in power networks. The main problem for an analysis of these databases is the heterogeneity feature: databases of various distributors differ from one another. It is impossible to retrieve reliability parameters from this data in a direct way. In this paper there is applied a framework for the retrieving of parameters from various outage databases in the Czech and Slovak republics. There are also actual results and description of confidence intervals for certain features within the distribution grid.