Influence of Over-voltage Condition Brought by HEMP, Lightning Over-voltage and Operating Over-voltage during Commutation Period on Reliability of HVDC Converter Valve

Jiachen Tian, Chunyan Ma, Qing Duan, Ziqian Zhang, Feng Wang, Fang Zhuo, Hao Yi

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


With the rapid development of high voltage direct current (HVDC) transmission technology, it is necessary to assess the reliability of converter valve under different working conditions. In this paper, the working state of 6-pulse converter valve is divided into commutation period and non-commutation period. Two-phase short circuit is brought by commutation period and over-voltage impact will bring severe damages to the circuit especially under The influence of HEMP on the operation of the converter valve is studied. HEMP is also called high altitude nuclear electromagnetic pulse and it contains harmonics with different frequencies. HEMP will bring huge shocks to not only sources but valve. Lightning over-voltage is caused by thunder climate change and the high value of over-voltage may destroy the structure of thyristor. Operating over-voltage is brought by Therefore, in order to ensure the reliability and the operating efficiency of converter valve, we should focus on the influence of HEMP on the converter valve including the over-voltage distributions inside the HVDC converter valve and its impact to protecting circuits of thyristors.

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
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


Conference22nd International Conference on Electrical Machines and Systems


  • Commutation period
  • fault characteristic
  • Heat accumulation
  • HVDC converter valve
  • Lightning over-voltage
  • Operating over-voltage
  • over-voltage condition

ASJC Scopus subject areas

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

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