A New Index for Quantitative Assessment of ‎Distribution Network Resilience in the Presence of Distributed ‎Generations

Resilience is defined as the system ability to keep an acceptable performance level against a sever disturbance and to return to a stable condition in a suitable time. Occurrence of inconvenient weather conditions and natural disasters, which are growing in number and severity during the last years, has always led to damages and wide outage throughout the distribution network. Therefore the assessment of distribution network resilience and its return ability against sever weather condition and also reducing the vulnerability of distribution network against the events should have the priority in the planning and operation of these networks. In this paper, the resilience concept and its characteristics are determined and then by modeling the natural disasters including flood and storm, a new index for resilience assessment of distribution network in the presence of distributed generators is introduced. The proposed model has been applied to a real network and the effects of distributed generators on the resilience of distribution networks have been studied using the new introduced index.