Fault indicators effects on distribution reliability indices

Reduction of failure rates and applying effective fault management can be affected in improvement of reliability indices in distribution systems. One of the ways to improving the reliability of distribution networks in fault management procedure is installing Fault Indicators (FIs) in overhead primary networks. FIs allow operators to quickly identify the location of a fault on overhead lines feeders. FIs can reduce fault localization and therefore reduction in outage duration and outage cost. In this paper, modelling of FIs in reliability assessment and computing of related indices such as SAIFI, SAIDI, CAIFI is introduced. Using model development and case studies it is discussed and shown that location and numbers of FIs effect in distribution reliability indices.