Modelling of interactions between power system and communication systems for the evaluation of reliability

In the process of integrating further distributed generation units and optimizing current power systems intelligent applications such as generation side management represent a cost efficient alternative to conventional grid reinforcement and expansion. The functionality of those intelligent applications however is often dependent on an information and communication technology system (ICT-system). Therefore interactions between power system and ICT-system gain in importance with extensive installation of such applications, especially in the field of power system reliability. For the assessment of reliability in such power systems partly dependent on an ICT-System various additional aspects have to be considered. Therefore a new approach has been developed, which focuses especially on interactions with the ICT-system, intelligent applications and time dependencies of power demand and injection as well as failure rates for the calculation of power system reliability. The results emphasize its benefits for the evaluation of reliability in power systems depending on an ICT-system.