Resilience Trapezoid-Based Operational Reliability of Distribution System

摘要

The operational reliability analysis to events with low probability and high impact is crucial for power system. The cyber-physical threats to a power system possess several challenges to a reliable and efficient power supply to its customers. In this paper, operational reliability of a microgrid is quantified using the "resilience trapezoid." This paper aims to study the time-dependent metrics that capture distribution system degradation phases due to any external threat and its recovery process based on the trapezoid method. It illustrates the sensitivity of the distribution system due to the effect of abnormal weather conditions or cyber threats and how it can recover back to its original form in a fast and efficient way. The operational reliability analysis of a distribution network consisting of lines, loads, and wind turbine generator is done to identify its performance during such high impact conditions. Loss of load probability and expected energy not served are calculated to have a proper assessment of the system and its measures to keep the network intact for a comparatively more time duration thus preventing further damage.