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Cable Thermal Model in Protection System

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F08%3APU77077" target="_blank" >RIV/00216305:26220/08:PU77077 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Cable Thermal Model in Protection System

  • Original language description

    Certain sophisticated digital relays offer the possibility of protecting cables by means of a thermal model with pa-rameter setting using the knowledge of the cable heating time constant and given operating conditions. The principle of the thermal modelis based on the theory of heating up a conductor by the flowing current and therefore it is neces-sary 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 the cable rated current capable of selective setting of the relay and its coordination with the protective system.

  • Czech name

    Cable Thermal Model in Protection System

  • 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

    D - Article in proceedings

  • 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

  • Article name in the collection

    Proceedings of 9th International Scientific Conference Electric Power Engineering 2008

  • ISBN

    978-80-214-3650-3

  • ISSN

  • e-ISSN

  • Number of pages

    4

  • Pages from-to

  • Publisher name

    Neuveden

  • Place of publication

    Neuveden

  • Event location

    Hotel Santon, Brno

  • Event date

    May 13, 2008

  • Type of event by nationality

    EUR - Evropská akce

  • UT code for WoS article

    000263964600035