Patterns in Failure Rate of LV Distribution Components

Abstract

In general Distribution System Operators are more focused on Medium Voltage (MV) distribution grids as higher voltage levels contribute more to the average interruption duration than Low Voltage (LV) distribution grids. This focus has led to a reduction of the average interruption duration on MV level, which consequently led to a relative increase in costs and interruption duration on LV level. Therefore DSOs want to have more insight into interruptions on LV level. A first step is to analyse patterns in the failure of LV components. By analysing interruptions and assets it can be concluded that failures on LV level are not (completely) related to age. Also differences in failure rate between components and regions can be observed. These patterns ask for performing a more complex statistical analysis in order to investigate other predictors for outages and for assessing the condition of LV grids.