A risk-based reliability method for N-1-1 contingency analysis

Muthanna Al-Sarray, Haider Mhiesan, Roy McCann, Haitao Liao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


There is a need for improved methods in conducting reliability studies of electric power systems. This is motivated by NERC TPL-001-4 for analyzing N-1-1 contingency events. In this paper a new reliability analysis technique is developed. Referred to as a Risk-Based Reliability Method (RBRM), it is applied to a 68-bus, 16-machine IEEE benchmark to evaluate system reliability under N-1-1 analysis. Factors include the transmission line age, load flow under normal conditions and load flow under post-first-disturbance conditions. Results are also included where reliability factors are modified in order to improve the ability to identify and rank the most severe and highly probable contingencies.

Original languageEnglish (US)
Title of host publicationNAPS 2016 - 48th North American Power Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509032709
StatePublished - Nov 17 2016
Externally publishedYes
Event48th North American Power Symposium, NAPS 2016 - Denver, United States
Duration: Sep 18 2016Sep 20 2016


Other48th North American Power Symposium, NAPS 2016
CountryUnited States


  • contingency analysis
  • protection systems
  • reliability
  • severity index

ASJC Scopus subject areas

  • Strategy and Management
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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