Wavelets for the Analysis and Compression of Power System Disturbances

Research output: Contribution to journalArticlepeer-review

172 Citations (Scopus)


Wavelets introduce new classes of basis functions for time-frequency signal analysis and have properties particularly suited to the transient components and discontinuities evident in power system disturbances. Wavelet analysis involves representing signals in terms of simpler, fixed building blocks at different scales and positions. This paper examines the analysis and subsequent compression properties of the discrete wavelet and wavelet packet transforms and evaluates both transforms using an actual power system disturbance from a digital fault recorder. The paper presents comparative compression results using the wavelet and discrete cosine transforms and examines the application of wavelet compression in power monitoring to mitigate against data communications overheads.
Original languageEnglish
Pages (from-to)358-364
Number of pages7
JournalIeee Transactions On Power Delivery
Volume14, No. 2
Issue number2
Publication statusPublished - Apr 1999

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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