Koordinacija Izolacije U Vn Prekidaču S Aspekta Sigurnosti Od Eksplozije

Dejan Bešlija; Mahir Muratović; Sead Delić; Kyong-Hoe Kim; Rasim Gačanović

doi:10.2478/bhee-2015-0002

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Koordinacija Izolacije U Vn Prekidaču S Aspekta Sigurnosti Od Eksplozije

B&H Electrical Engineering

Volume 9 (2015): Issue 1 (December 2015)

By: Dejan Bešlija, Mahir Muratović, Sead Delić, Kyong-Hoe Kim and Rasim Gačanović

Open Access

|Dec 2015

Abstract

Pojava preskoka između glavnih kontakata visokonaponskog (VN) prekidača ili između prekidnog elementa i plašta VN prekidača spada u kategoriju najozbiljnijih kvarova u elektroenergetskom postrojenju. Ova vrsta kvara predstavlja realnu opasnost od eksplozije prekidača, a potencijalno može dovesti i do požara u postrojenju, posebno ukoliko se radi o metalom oklopljenom SF₆ gasom izoliranom postrojenju (MOP). U cilju prevencije ovakvih događaja neophodno je osigurati koordinaciju izolacije VN prekidača. Ona podrazumijeva takav dizajn, gdje je prekidač u otvorenom položaju u stanju podnijeti maksimalnu vrijednost napona koja se može pojaviti na njegovim priključcima (definirano odgovarajućim standardom i/ili uvjetima rada), pri čemu se eventualni preskok tokom operacije otvaranja odvija isključivo među lučnim, a nikako među glavnim kontaktima, što bi neminovno dovelo do kvara. U radu je na primjeru realnog SF₆ prekidača 420 kV, 63 kA, izvršeno modeliranje koordinacije izolacije uzimajući u obzir i strujanje SF₆ gasa. Predstavljen je i utjecaj ključnih parametara prekidača na koordinaciju izolacije, a što je u konačnici rezultiralo unaprijeđenjem postojećeg dizajna prekidača i povećanja sigurnosti od eksplozije.

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Articles in this issue

DOI: https://doi.org/10.2478/bhee-2015-0002 | Journal eISSN: 2566-3151 | Journal ISSN: 2566-3143

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Language: English

Page range: 13 - 19

Submitted on: Jun 1, 2015

Accepted on: Sep 1, 2015

Published on: Dec 31, 2015

Published by: Bosnia and Herzegovina National Committee CIGRÉ

In partnership with: Paradigm Publishing Services

Publication frequency: 2 issues per year

Keywords:

VN SF₆ prekidač,

koordinacija izolacije,

probojni napon,

sigurnost od eksplozije

Related subjects:

Computer sciences,

Computer sciences, other,

Engineering,

Electrical engineering,

Fundamentals of electrical engineering,

Mechanical engineering,

Mechatronics and automotive

© 2015 Dejan Bešlija, Mahir Muratović, Sead Delić, Kyong-Hoe Kim, Rasim Gačanović, published by Bosnia and Herzegovina National Committee CIGRÉ
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 9 (2015): Issue 1 (December 2015)