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Analytical model for unavailability due to aging failures in power systems

Authors
Journal
International Journal of Electrical Power & Energy Systems
0142-0615
Publisher
Elsevier
Publication Date
Volume
31
Identifiers
DOI: 10.1016/j.ijepes.2009.03.011
Keywords
  • Aging Failures
  • Analytical Model
  • Reliability Evaluation
  • Power System Reliability
  • Unavailability
Disciplines
  • Mathematics

Abstract

Abstract Power system component failures can generally be classified into two categories: repairable random failures and aging failures. An essential step in power system reliability evaluation is the calculation of component unavailability. The paper presents a new model for calculating the unavailability due to aging failures using the normal distribution. It is based on the strictly mathematical derivation and can be used more easily with high accuracy compared to the traditional model. An example of seven generating units and two test systems of the RBTS and the IEEE-RTS were used to demonstrate effectiveness of the proposed model and its applications in power system reliability evaluation.

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