Frequency and harmonic evaluation using non-linear least-squares technique

S. K. Tso, Wai Lok Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


With increasing harmonic pollution in the power system, monitoring and analysis of harmonic variations has become important. Because of limitations associated with conventional algorithms, particularly under supply-frequency drift and transient situations, a new approach based on non-linear least-squares parameter estimation is proposed as an alternative solution for high-accuracy evaluation. The proposed algorithm determines simultaneously the supply-frequency variation, the fundamental-amplitude variation, as well as the harmonic-amplitude variation. Examples are used to demonstrate the effectiveness of the algorithm.
Original languageEnglish
Pages (from-to)124-132
Number of pages9
JournalJournal of Electrical and Electronics Engineering, Australia
Issue number2
Publication statusPublished - 1 Jun 1994
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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