A Wavelet Transform-Based Protection Scheme of Multi-Terminal HVDC System

Lian Liu, Marjan Popov, Mart Van Der Meijden, Vladimir Terzija

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

4 Citations (Scopus)


High-voltage direct current (HVDC) transmission has become a promising technology for the future electrical power grid, especially for the concept of Super Grid. There is a trend to connect the existing simple point-To-point HVDC lines together as multi-Terminal HVDC (MTDC) network for the sake of sustainable power supply. However, problems occur when it comes to protecting this complex electrical system because the current protection methods have shortcomings. Meanwhile, there are studies on developing protection schemes based on wavelet transform (WT), which are suitable for the point-To-point networks, but are insufficient for the MTDC networks. Therefore, this paper has conducted the transient analysis of a MTDC network after faults and presented a new WT-based protection. A protection scheme is then proposed. With certain thresholds, it has good selectivity of faults that are outside the protection zone. This protection scheme is validated by simulation on the PSCAD/EMTDC platform.

Original languageEnglish
Title of host publication2016 IEEE International Conference on Power System Technology, POWERCON 2016
Place of PublicationPiscataway, NJ
Number of pages6
ISBN (Electronic)978-1-4673-8848-1
Publication statusPublished - 2016
Event2016 IEEE International Conference on Power Systems Technology (POWERCON) - Wollongong, Australia
Duration: 28 Sep 20161 Oct 2016


Conference2016 IEEE International Conference on Power Systems Technology (POWERCON)


  • Multi-Terminal HVDC (MTDC)
  • Protection
  • Voltage source converter (VSC)
  • Wavelet transform (WT)


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