Selection of relevant failure modes and system states for the evaluation of reliability in distribution grids depending on ICT

摘要

The increasing number of intelligent applications such as automation, monitoring and control functionalities in distribution grids often with high penetration by distributed energy resources may lead to a scenario, in which operation of distribution grids in between technical constraints becomes dependent on the ICT-system in common operating conditions. For the assessment of reliability in such scenarios tools for reliability calculations need to be enhanced by an emulation of intelligent applications and need to consider time dependencies of grid utilisation as well as equipment failure rates. These additions raise the computational effort necessary for reliability assessment. In order to cope with this challenge, algorithms for the selection of relevant failure modes and system states have been developed and are presented in this paper. Simulation results prove their benefit for the process of reliability calculation.