A Comprehensive Data Driven Outage Analysis for Assessing Reliability of the Bulk Power System

This paper presents a comprehensive overview of how historical outage data can be analyzed to determine the reliability of the bulk power system (BPS) using both outage frequency and outage duration metrics. In addition to outage analysis, different outage categories are analyzed and prioritized according to their outage severity level. A new reliability indicator, Outage Impact Index (OII) is also proposed which identifies annual system risks for a given voltage class. The key performance indices discussed in this paper can be used by power utilities to quantify and assess transmission system performance, establish baselines from chronological trends, and minimize system risks by developing corrective measures.