Electrical stress suffered by medium voltage medium frequency transformer

Changjiang Zheng; Qian Wang; Huai Wang; Zhan Shen; Claus Leth Bak

doi:10.1109/EIC49891.2021.9612278

Electrical stress suffered by medium voltage medium frequency transformer

Changjiang Zheng, Qian Wang, Huai Wang, Zhan Shen, Claus Leth Bak

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

Medium voltage medium frequency transformers may face electrical stress different from that of conventional transformers. Working under PWM-like voltages, inter-Turn and inter-layer overvoltage could be induced within the transformer's winding. This overvoltage can increase the probability of partial discharge that can degrade the insulation quickly and lead to premature breakdown. Therefore, an investigation on the electrical stress of medium-frequency transformer is necessary. This paper chooses a transformer prototype as a case and creates its equivalent circuit. Based on this circuit, transient inter-Turn and inter-layer voltage simulation is conducted under different voltage rise times, relative insulation permittivity and winding structures. The simulation results confirm the existence of interturn and inter-layer overvoltage and reveal the influence of the above-mentioned parameters on the overvoltage.

Original language	English
Title of host publication	2021 Electrical Insulation Conference, EIC 2021
Number of pages	4
Publisher	IEEE
Publication date	2021
Pages	116-119
ISBN (Print)	978-1-6654-4686-0
ISBN (Electronic)	978-1-6654-1564-4
DOIs	https://doi.org/10.1109/EIC49891.2021.9612278
Publication status	Published - 2021
Event	2021 Electrical Insulation Conference, EIC 2021 - Virtual, Online, United States Duration: 7 Jun 2021 → 28 Jun 2021

Conference

Conference	2021 Electrical Insulation Conference, EIC 2021
Country/Territory	United States
City	Virtual, Online
Period	07/06/2021 → 28/06/2021

Series	IEEE Electrical Insulation Conference (EIC)
ISSN	2576-6791

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

electrical stress
insulation
inter-Turn voltage
Medium voltage medium frequency transformer

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10.1109/EIC49891.2021.9612278

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Cite this

@inproceedings{f1d268f33fe1410bb9ca8810b29c8cf4,

title = "Electrical stress suffered by medium voltage medium frequency transformer",

abstract = "Medium voltage medium frequency transformers may face electrical stress different from that of conventional transformers. Working under PWM-like voltages, inter-Turn and inter-layer overvoltage could be induced within the transformer's winding. This overvoltage can increase the probability of partial discharge that can degrade the insulation quickly and lead to premature breakdown. Therefore, an investigation on the electrical stress of medium-frequency transformer is necessary. This paper chooses a transformer prototype as a case and creates its equivalent circuit. Based on this circuit, transient inter-Turn and inter-layer voltage simulation is conducted under different voltage rise times, relative insulation permittivity and winding structures. The simulation results confirm the existence of interturn and inter-layer overvoltage and reveal the influence of the above-mentioned parameters on the overvoltage.",

keywords = "electrical stress, insulation, inter-Turn voltage, Medium voltage medium frequency transformer",

author = "Changjiang Zheng and Qian Wang and Huai Wang and Zhan Shen and Bak, {Claus Leth}",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 Electrical Insulation Conference, EIC 2021 ; Conference date: 07-06-2021 Through 28-06-2021",

year = "2021",

doi = "10.1109/EIC49891.2021.9612278",

language = "English",

isbn = "978-1-6654-4686-0",

series = "IEEE Electrical Insulation Conference (EIC)",

publisher = "IEEE",

pages = "116--119",

booktitle = "2021 Electrical Insulation Conference, EIC 2021",

address = "United States",

}

Zheng, C, Wang, Q, Wang, H, Shen, Z & Bak, CL 2021, Electrical stress suffered by medium voltage medium frequency transformer. in 2021 Electrical Insulation Conference, EIC 2021. IEEE, IEEE Electrical Insulation Conference (EIC), pp. 116-119, 2021 Electrical Insulation Conference, EIC 2021, Virtual, Online, United States, 07/06/2021. https://doi.org/10.1109/EIC49891.2021.9612278

Electrical stress suffered by medium voltage medium frequency transformer. / Zheng, Changjiang; Wang, Qian; Wang, Huai et al.
2021 Electrical Insulation Conference, EIC 2021. IEEE, 2021. p. 116-119 (IEEE Electrical Insulation Conference (EIC)).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Electrical stress suffered by medium voltage medium frequency transformer

AU - Zheng, Changjiang

AU - Wang, Qian

AU - Wang, Huai

AU - Shen, Zhan

AU - Bak, Claus Leth

PY - 2021

Y1 - 2021

N2 - Medium voltage medium frequency transformers may face electrical stress different from that of conventional transformers. Working under PWM-like voltages, inter-Turn and inter-layer overvoltage could be induced within the transformer's winding. This overvoltage can increase the probability of partial discharge that can degrade the insulation quickly and lead to premature breakdown. Therefore, an investigation on the electrical stress of medium-frequency transformer is necessary. This paper chooses a transformer prototype as a case and creates its equivalent circuit. Based on this circuit, transient inter-Turn and inter-layer voltage simulation is conducted under different voltage rise times, relative insulation permittivity and winding structures. The simulation results confirm the existence of interturn and inter-layer overvoltage and reveal the influence of the above-mentioned parameters on the overvoltage.

AB - Medium voltage medium frequency transformers may face electrical stress different from that of conventional transformers. Working under PWM-like voltages, inter-Turn and inter-layer overvoltage could be induced within the transformer's winding. This overvoltage can increase the probability of partial discharge that can degrade the insulation quickly and lead to premature breakdown. Therefore, an investigation on the electrical stress of medium-frequency transformer is necessary. This paper chooses a transformer prototype as a case and creates its equivalent circuit. Based on this circuit, transient inter-Turn and inter-layer voltage simulation is conducted under different voltage rise times, relative insulation permittivity and winding structures. The simulation results confirm the existence of interturn and inter-layer overvoltage and reveal the influence of the above-mentioned parameters on the overvoltage.

KW - electrical stress

KW - insulation

KW - inter-Turn voltage

KW - Medium voltage medium frequency transformer

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DO - 10.1109/EIC49891.2021.9612278

M3 - Article in proceeding

AN - SCOPUS:85123350470

SN - 978-1-6654-4686-0

T3 - IEEE Electrical Insulation Conference (EIC)

SP - 116

EP - 119

BT - 2021 Electrical Insulation Conference, EIC 2021

PB - IEEE

T2 - 2021 Electrical Insulation Conference, EIC 2021

Y2 - 7 June 2021 through 28 June 2021

ER -

Electrical stress suffered by medium voltage medium frequency transformer

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