Summary of Fault Characteristic of Thyristors in HVDC Converter Valve under Over-voltage Condition

Jiachen Tian, Yating Gou, Cuicui Liu, Ziqian Zhang, Chong Gao, Jianhui Zhou, Jing Zhang, Fang Zhuo, Feng Wang

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

Abstract

With the development of HVDC transmission technology, HVDC converter valves are widely used in many areas including the connection between systems with different frequencies. Thyristor is the core component in HVDC converter valve and its reliability will influence the operation of HVDC converter valve. However, the structure of thyristor is fragile under over-voltage condition. On the one hand, external shock such as HEMP will cause over-voltage condition inside the converter valve. The changing rate of voltage is so large that structure of thyristor may be destroyed. On the other hand, when the thyristor is in reverse characteristic recovery phase, a large reverse recovery voltage overshoot occurs. This over-voltage condition will cause damage to thyristor because thyristor is fragile in this phase. Based on these analysis above, in order to reduce the damages caused by over-voltage and design some methods to realize the online- monitoring, this paper summarizes the fault characteristics of thyristor under over-voltage condition.

Original languageEnglish
Title of host publication2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Electronic)9781728133980
DOIs
Publication statusPublished - 1 Aug 2019
Event22nd International Conference on Electrical Machines and Systems, ICEMS 2019 - Harbin, China
Duration: 11 Aug 201914 Aug 2019

Publication series

Name2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019

Conference

Conference22nd International Conference on Electrical Machines and Systems, ICEMS 2019
CountryChina
CityHarbin
Period11/08/1914/08/19

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Keywords

  • Commutation period
  • HEMP
  • HVDC converter valve

ASJC Scopus subject areas

  • Control and Optimization
  • Energy Engineering and Power Technology
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Tian, J., Gou, Y., Liu, C., Zhang, Z., Gao, C., Zhou, J., ... Wang, F. (2019). Summary of Fault Characteristic of Thyristors in HVDC Converter Valve under Over-voltage Condition. In 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019 [8922237] (2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ICEMS.2019.8922237