Risk Assessment in Low Voltage Distribution Networks

This paper presents a risk assessment methodology developed by Areti S.p.A., the distribution system operator of Rome, Italy, and applied in the more general context of a risk-based planning of low voltage distribution networks. A risk model comprising fault rate and impact analyses is applied to map the risk of the entire LV distribution grid of Rome. The continuity of supply indicator is used as a risk factor in the study. Risk thresholds are also defined with the aim to identify the portion of the grid which requires investments.