The University of Southampton
University of Southampton Institutional Repository

Study of DC breakdown in multilayered insulation systems

Study of DC breakdown in multilayered insulation systems
Study of DC breakdown in multilayered insulation systems

Multilayer insulation systems have been widely used in both high voltage alternating current (HVAC) and high voltage direct current (HVDC) power systems. A well designed multilayer insulation structure could benefit the performances and reliability of the overall insulation system and as well as costs reduction. In this present work, DC breakdown strengths of various combinations of multilayer polyethylene terephthalate (PET) films (from one to four layers) with a same total thickness were investigated. It has been found that multilayer symmetrical structures can enhance the breakdown strength of the insulation system. Space charge characteristics of these various configurations have been initially studied, in order to understand the results of the DC breakdown tests. The space charge results indicate that large amount of fast moving charges presences immediately after the voltage application, which can be partially blocked and trapped by the interfaces between film layers. The trapped charges could further distort the electric field distributions in the insulation system, and resulting field enhancement in thin layers, particularly in unsymmetrical configurations. However, more evidences and investigations are required for better understanding the mechanisms of breakdown in multilayer insulation system.

226-229
Institute of Electrical and Electronics Engineers Inc.
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Zhan, Yunpeng
5d162333-4c63-4b95-9a11-87d6b438aea0
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Pu, Lu
10509dbc-38fd-4da9-9ea2-0572f3bce6fa
Zhao, Xuefeng
736a2ed3-cba4-4bbe-a5f9-76b07550980e
Duan, Wei
320e93a0-a89e-4f11-8e89-4b69ec882eec
Sun, Haofei
d67245e2-4acd-4ffa-bcba-5ff9d0d4ae9e
Ju, Zeli
9b34a7bd-21d8-446f-a8be-d05c69da8bf0
Wang, Nan
642b512c-b1e6-44f5-b48f-7baa25fd225c
Hao, Miao
fb7006e0-07c0-46f5-9279-e30a7d3bd614
Zhan, Yunpeng
5d162333-4c63-4b95-9a11-87d6b438aea0
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Pu, Lu
10509dbc-38fd-4da9-9ea2-0572f3bce6fa
Zhao, Xuefeng
736a2ed3-cba4-4bbe-a5f9-76b07550980e
Duan, Wei
320e93a0-a89e-4f11-8e89-4b69ec882eec
Sun, Haofei
d67245e2-4acd-4ffa-bcba-5ff9d0d4ae9e
Ju, Zeli
9b34a7bd-21d8-446f-a8be-d05c69da8bf0
Wang, Nan
642b512c-b1e6-44f5-b48f-7baa25fd225c

Hao, Miao, Zhan, Yunpeng, Chen, George, Pu, Lu, Zhao, Xuefeng, Duan, Wei, Sun, Haofei, Ju, Zeli and Wang, Nan (2019) Study of DC breakdown in multilayered insulation systems. In ICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings. Institute of Electrical and Electronics Engineers Inc. pp. 226-229 . (doi:10.1109/ICEMPE.2019.8727329).

Record type: Conference or Workshop Item (Paper)

Abstract

Multilayer insulation systems have been widely used in both high voltage alternating current (HVAC) and high voltage direct current (HVDC) power systems. A well designed multilayer insulation structure could benefit the performances and reliability of the overall insulation system and as well as costs reduction. In this present work, DC breakdown strengths of various combinations of multilayer polyethylene terephthalate (PET) films (from one to four layers) with a same total thickness were investigated. It has been found that multilayer symmetrical structures can enhance the breakdown strength of the insulation system. Space charge characteristics of these various configurations have been initially studied, in order to understand the results of the DC breakdown tests. The space charge results indicate that large amount of fast moving charges presences immediately after the voltage application, which can be partially blocked and trapped by the interfaces between film layers. The trapped charges could further distort the electric field distributions in the insulation system, and resulting field enhancement in thin layers, particularly in unsymmetrical configurations. However, more evidences and investigations are required for better understanding the mechanisms of breakdown in multilayer insulation system.

Full text not available from this repository.

More information

e-pub ahead of print date: 7 April 2019
Venue - Dates: 2nd International Conference on Electrical Materials and Power Equipment, ICEMPE 2019, Guangzhou, China, 2019-04-07 - 2019-04-10

Identifiers

Local EPrints ID: 433281
URI: https://eprints.soton.ac.uk/id/eprint/433281
PURE UUID: 0f9b9c41-bb95-45c4-b269-d0ea79ece41d
ORCID for Yunpeng Zhan: ORCID iD orcid.org/0000-0002-8171-8107

Catalogue record

Date deposited: 13 Aug 2019 16:30
Last modified: 15 Aug 2019 00:58

Export record

Altmetrics

Contributors

Author: Miao Hao
Author: Yunpeng Zhan ORCID iD
Author: George Chen
Author: Lu Pu
Author: Xuefeng Zhao
Author: Wei Duan
Author: Haofei Sun
Author: Zeli Ju
Author: Nan Wang

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×