Data smoothing by B-spline wavelets for digital distance protection

Yuan Liao, S. Elangovan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The multiresolution analysis generated by the compactly supported cardinal B-spline wavelets for data smoothing is introduced. It is shown that the proposed technique has the advantages of high accuracy and low delay and may be used instead of the traditional low-pass filters for power system protection. Its applications in digital distance protection are presented in detail. Simulation studies using EMTP have shown that the wavelets-based method can reduce the relaying time and may be suitable for digital distance protection.

Original languageEnglish
Pages (from-to)281-286
Number of pages6
JournalInternational Journal of Electrical Power and Energy Systems
Issue number4
StatePublished - May 1998


  • B-spline wavelets
  • Digital distance protection
  • Digital filtering

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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