Using the criterion of technical efficiency for set-up of line distance relay protection

T. H Q Minh, A. V. Shmoilov

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

    2 Citations (Scopus)


    For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed. The most representative and reliable results of making losses: refusals of operation, false and excessive actions take place at definition of their expressions as products of probabilities of corresponding conditions (faults on a protected line and in an external network, normal working operational conditions, asynchronous and open-phase modes, etc.) on conditional probabilities of losses in these conditions. The conditional probabilities are formed on the method SBID (selection the borders of intervals of the in and out data) allowing to define the full probability distribution law (PDL) of all determined or random functional dependences of any dimension on onedimensional PDL of arguments of these dependences. In the case of distance protection line reasonable to approximate PDL response parameter (the measured resistance by distance) to uniform law PDL that has allowed simplifying to calculate conditional probability of the losses and as a whole technical effect. Determining the criteria for technical efficiency is an objective indicator quality of functioning relay protection. Therefore, by its extremum or the nearest approximation to its extremum, determine the meaning and content of each stage distance protection, to determine the optical practical setting of distance protection.

    Original languageEnglish
    Title of host publicationProceedings of the 6th International Forum on Strategic Technology, IFOST 2011
    Number of pages5
    Publication statusPublished - 2011
    Event6th International Forum on Strategic Technology, IFOST 2011 - Harbin, China
    Duration: 22 Aug 201124 Aug 2011


    Other6th International Forum on Strategic Technology, IFOST 2011


    • distance relay protection
    • electric network
    • probability distribution density (PDD)
    • probability distribution function (PDL)
    • probability distribution law (PDL)
    • technical effect
    • Technical efficiency

    ASJC Scopus subject areas

    • Management of Technology and Innovation
    • Strategy and Management

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