Investigation of the overvoltage and fast transient phenomena on transformer terminals by taking into account the grounding effects

M Popov, L Grcev, KR Høidalen

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)
4 Downloads (Pure)

Abstract

A large number of electromagnetic transient studies have so far reported findings related to the overvoltage behavior of systems within a broad frequency range. However, in most cases, actual grounding effects have been either not taken into account or have been just partially considered. Although an accurate methodology to study grounding effects exists, a detailed analysis of the grounding effects has not yet been fully performed. Moreover, many test applications are performed in laboratories where the grounding is close to ideal. In this paper, the grounding system modeling methodology is described, and its capability is demonstrated for an existing complex grounding system. First, the complex grounding system is modeled in the frequency domain by the TRAGSYS program, which represents the grounding system as an equivalent multiport network. Next, the equivalent network parameters are represented in a broad frequency range enabling time domain computations in ATP-EMTP. Finally, the protection level of the chosen lightning arresters is discussed under most severe conditions.
Original languageEnglish
Pages (from-to)5218-5227
Number of pages10
JournalIEEE Transactions on Industry Applications
Volume51
Issue number6
DOIs
Publication statusPublished - 2015

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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