NDLI: Lightning-Induced Overvoltages Transmitted Over Distribution Transformer With MV Spark-Gap Operation—Part II: Mitigation Using LV Surge Arrester

Content Provider	IEEE Xplore Digital Library
Author	Sabiha, N.A. Lehtonen, M.
Copyright Year	1986
Abstract	When the distribution transformers are exposed to lightning overvoltages, it is worthy to study the low-voltage (LV) network response at the customer terminals using an accurate and simplified high-frequency transformer model. The impact of LV network feeder numbers, lengths, types, and loads on the lightning-induced overvoltage reached at the service entrance point is investigated. The high-frequency model representation of distribution transformer and the LV network are combined in a single arrangement in the environment of the Alternative Transients Programs/Electromagnetic Transients Program. Finally, a study is carried out to mitigate the overvoltages by allocating the surge arrester at the secondary side of the distribution transformer concerning the medium-voltage spark-gap operation. A simplified surge arrester model is represented and verified. This study can enhance the overvoltage protection of Finnish LV networks.
Sponsorship	IEEE Power Engineering Society
Starting Page	2565
Ending Page	2573
Page Count	9
File Size	894294
File Format	PDF
ISSN	08858977
Volume Number	25
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spark gaps Arresters Surge protection Power transformer insulation Power system protection Lightning Medium voltage Electromagnetic coupling Circuits Frequency mitigation of overvoltages High-frequency distribution transformer low-voltage surge arrester medium-voltage spark gap
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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