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NUMERICAL SIMULATION ON CHARGE TRANSPORT AND ANALYSIS OF ITS RELATIONSHIP WITH DC ELECTRIC BREAKDOWN

  • Dongri Xie
  • , Wei Wei
  • , Li Ding
  • , Shuibin Xia
  • , Dengping Tang
  • , Tao Peng
  • , Daomin Min
  • , Shengtao Li
  • State Grid Hubei Marketing Service Center (Measurement Center)
  • Xi'an Jiaotong University

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

Abstract

Electric field distortion caused by charge transport is an important factor resulting in breakdown. Based on bipolar charge transport model, the dynamic process of space charge distribution and electric field distortion varied with voltage is simulated. The results show that the electric field distortion caused by charge accumulation in the shallow region of material is a key factor that affects the breakdown process. Due to the homo space charges accumulation, the reverse electric field formed at sample edge, which makes the electric field weakened in the region, while the electric field inside the sample is strengthened, thus inducing the maximum E. The PEA result verifies the relationship between charge distribution and electric field distortion. Besides, seen from the view of impact ionization and free volume breakdown theory, the charge energy affected by distorted electric field and free volume should be jointly considered to interpret the breakdown process.

Original languageEnglish
Title of host publicationIET Conference Proceedings
PublisherInstitution of Engineering and Technology
Pages285-288
Number of pages4
Volume2021
Edition15
ISBN (Electronic)9781839536052
DOIs
StatePublished - 2021
Event22nd International Symposium on High Voltage Engineering, ISH 2021 - Xi'an, Virtual, China
Duration: 21 Nov 202126 Nov 2021

Conference

Conference22nd International Symposium on High Voltage Engineering, ISH 2021
Country/TerritoryChina
CityXi'an, Virtual
Period21/11/2126/11/21

Keywords

  • CHARGE TRANSPORT
  • DC BREAKDOWN
  • ELECTRIC FIELD DISTORTION
  • TRAP

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