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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 the cable rated current capable of selective setting of the relay and its coordination with the protective system.
  • 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 the cable rated current capable of selective setting of the relay and its coordination with the protective system. (en)
  • 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. (cs)
Title
  • Application of Thermal Models of Digital Protective Relays in Cable Protection
  • Application of Thermal Models of Digital Protective Relays in Cable Protection (en)
  • Použití tepelného modelu pro chránění kabelů (cs)
skos:prefLabel
  • Application of Thermal Models of Digital Protective Relays in Cable Protection
  • Application of Thermal Models of Digital Protective Relays in Cable Protection (en)
  • Použití tepelného modelu pro chránění kabelů (cs)
skos:notation
  • RIV/00216305:26220/07:PU69290!RIV08-MSM-26220___
http://linked.open.../vavai/riv/strany
  • 1-4
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM0021630516)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
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  • 410548
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26220/07:PU69290
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • power cable protections, thermal model, heating time constant (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [982441A1562E]
http://linked.open...v/mistoKonaniAkce
  • Stará Lesná
http://linked.open...i/riv/mistoVydani
  • Košice
http://linked.open...i/riv/nazevZdroje
  • PROCEEDINGS OF IVth INTERNATIONAL SCIENTIFIC SYMPOSIUM ELEKTROENERGETIKA 2007
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Orságová, Jaroslava
  • Chmela, Michal
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
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  • Neuveden
https://schema.org/isbn
  • 978-80-8073-844-0
http://localhost/t...ganizacniJednotka
  • 26220
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