Naslov
Line discharge capability of inductive voltage and combined transformers

Autori
Konta, I. ; Papić, D. ; Filipović-Grčić, D. ; Brezak, D.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 5th International Colloquium Transformer Research and Asset Management / - Opatija : Hrvatski komitet međunarodne konferencije za velike električne sisteme (CIGRE), 2019, 1-8

Skup
5th International Colloquium on Transformer Research and Asset Management

Mjesto i datum
Opatija, Hrvatska, 09.10.2019. - 12.10.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Instrument transformers, line discharge testing, EMTP simulation, Finite Element Analysis

Sažetak
Although their primary purpose is not line discharging, inductive voltage and combined transformers are recognized as suitable solution for line discharge due to a typically very fast decay of trapped charge. Discharge capability of instrument transformers is not defined by relevant standards. Instead, it is often specifically defined by technical specifications of individual network utilities. In this paper authors have analysed discharge capability of inductive voltage and combined transformers. The focus of this paper will be placed on two main aspects of line discharge activity: thermal and mechanical capability. The aim of this document is to prove that discharge capability of inductive and combined transformers can be simulated with adequate precision. Furthermore, the proposed approach provides an indispensable tool for determining and optimizing relevant electrical and mechanical transformer parameters in order to achieve requested discharge capability even when technical specifications or project requirements exceed discharge capability of a standard instrument transformer design. Lastly, the paper will present relevant testing procedures, which verify discharge capability of inductive voltage and combined transformers.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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