• Siyuan Liu
  • Yingsan Geng
  • Marjan Popov
  • Jianhua Wang
  • Zhiyuan Liu
  • Bojian Zhang

The vacuum interrupter is used as the key component of an active DCCB due to its excellent interruption and dielectric recovery characteristics after current zero. The vacuum interrupter can only interrupt the fault currents below the limitation of a critical di/dt and TIV, otherwise it causes a reignition and the interruption failure. In this paper, a detailed active injection DC CB model is developed, considering operation delay of switches, parasitic parameters of switches and thorough control logic. The limitation dielectric strength between the vacuum gap is defined by the cold break down voltage. Based on the numerical modelling, investigation will be performed to see the performance of DC CB with a failure interruption on the first current zero. The simulation results can help to optimize the injection circuit parameters when DC CB has a failure on the first current zero and has to interrupt in the next current zeros. This algorithm will consider predefined threshold of di/dt, chopping current and variable operation time in different scenarios.

Original languageEnglish
Title of host publicationISDEIV 2018 - Proceedings of the 28th International Symposium on Discharges and Electrical Insulation in Vacuum
EditorsLesli T. Falkingham, Eiji Kaneko
Place of PublicationPiscataway, NJ, USA
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages559-562
Number of pages4
Volume2
ISBN (Electronic)978-1-5386-4373-0
ISBN (Print)978-1-5386-4375-4
DOIs
Publication statusPublished - 2018
Event28th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2018 - Greifswald, Germany
Duration: 23 Sep 201828 Sep 2018

Conference

Conference28th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2018
CountryGermany
CityGreifswald
Period23/09/1828/09/18

    Research areas

  • active injection, di/dt, fault interruption, HVDC circuit breaker, PSCAD simulation

ID: 52265049