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Study on Partial Discharge Characteristics of Epoxy Resin Under Bipolar High-Frequency Square Wave Voltage

  • Yongsheng Xu
  • , Bing Luo
  • , Jiaju Lv
  • , Qihang Jiang
  • , Weiwang Wang
  • China Southern Power Grid
  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

One of the essential parts of the isolated DC-DC power converter is the high-frequency transformer (HFT). It typically functions with non-sinusoidal high-frequency excitation. Epoxy resin insulation is suffered from high dv/dt and high-frequency square voltage in HFT. Consequently, it is more vulnerable to cause degradation and failure. This study uses the Ultra-high frequency (UHF) antenna sensoring technique to examine the partial discharge (PD) characteristic parameters of 3 epoxy resin samples under high-frequency square wave voltage. PD characteristics and associated parameters are calculated and examined. Effects of frequency on discharge amplitude, discharge delay time etc. were discussed. They increase with the increase in frequency. It is noted that the coronal discharge is enhanced at high frequency. PD events at high frequency increases the discharge photon. This work is extremely important for the insulation design and optimization of HFT.

Original languageEnglish
Title of host publicationThe proceedings of the 18th Annual Conference of China Electrotechnical Society - Volume VII
EditorsQingxin Yang, Zewen Li, An Luo
PublisherSpringer Science and Business Media Deutschland GmbH
Pages649-656
Number of pages8
ISBN (Print)9789819710713
DOIs
StatePublished - 2024
Event18th Annual Conference of China Electrotechnical Society, ACCES 2023 - Nanchang, China
Duration: 15 Sep 202317 Sep 2023

Publication series

NameLecture Notes in Electrical Engineering
Volume1169 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference18th Annual Conference of China Electrotechnical Society, ACCES 2023
Country/TerritoryChina
CityNanchang
Period15/09/2317/09/23

Keywords

  • Corona discharge
  • Epoxy resin
  • High-Frequency square wave voltage
  • Partial discharge
  • UHF

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