Programmable automation system safety assessment (PASSI): Reliability assessment of a software-based motor protection relay using Bayesian networks

Atte Helminen, Urho Pulkkinen

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    Abstract

    Often to make justified reliability claim of a certain system different kinds of evidence needs to be combined. Some of the evidence supporting the claim may be of qualitative type, whereas some of the evidence may be of quantitative type. Combination of disparate evidence together is not always straightforward and the reasoning behind the conclusions obtained from the combination may be hard to explain. Bayesian networks provide a consistent and transparent method for the combination of the evidence and for the reasoning of one's beliefs on the relation of different pieces of evidence. In the special report we demonstrate the combination of disparate evidence with a case study on the reliability assessment of a software-based motor protection relay, where the combination of the reliability related evidence has been carried out using Bayesian networks. The reliability related evidence in the case study is the expert judgement on the development process and the operational experience estimated for the software-based motor protection relay.
    Original languageEnglish
    Title of host publicationFINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002
    Subtitle of host publicationFinal Report
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages218-225
    ISBN (Electronic)951-38-6086-8
    ISBN (Print)951-38-6085-X
    Publication statusPublished - 2002
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Tiedotteita - Research Notes
    Number2164
    ISSN1235-0605

      Fingerprint

    Cite this

    Helminen, A., & Pulkkinen, U. (2002). Programmable automation system safety assessment (PASSI): Reliability assessment of a software-based motor protection relay using Bayesian networks. In FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002: Final Report (pp. 218-225). VTT Technical Research Centre of Finland. VTT Tiedotteita - Research Notes, No. 2164