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Thermal Models of Cables in Digital Protective Terminals

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F08%3APU77078" target="_blank" >RIV/00216305:26220/08:PU77078 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Thermal Models of Cables in Digital Protective Terminals

  • Original language description

    Certain sophisticated digital relays offer the possibility of protecting cables by means of a thermal model with parameter setting using the knowledge of the cable heating time constant and given operating conditions. The principle of the thermal model is based on the theory of heating up a conductor by the flowing current and therefore it is necessary to know to what extent the theory is respected by the relay and what consequences its application brings. The paper presents a comparison between the simulation of heating a real cable by means of a mathematical model and the algorithm for analyzing the cable temperature used in digital relays. It also deals with the definition of the thermal model breaking characteristic as a parametric function of thecable rated current capable of selective setting of the relay and its coordination with the protective system

  • Czech name

    Thermal Models of Cables in Digital Protective Terminals

  • Czech description

    Některé moderní digitální ochrany nabízí možnost chránit kabely pomocí tepelného modelu, který lze nasta-vit na základě znalosti časové oteplovací konstanty kabelu a jeho provozních podmínek. Princip funkce te-pelného modelu je založen na teorii oteplování vodiče průchodem proudu, proto je třeba vědět, do jaké míry je tato teorie ochranou respektována a jaké to má důsledky při jejím použití. Článek se zabývá také odvoze-ním vypínací charakteristiky tepelného modelu, která by umožnila jeho selektivní nastavení v systému chránění.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    JE - Non-nuclear power engineering, energy consumption and utilization

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Technična elektrodynamika

  • ISSN

    0204-3599

  • e-ISSN

  • Volume of the periodical

    1

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    UA - UKRAINE

  • Number of pages

    4

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database