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Detection of voltage flicker based on hilbert transform and wavelet denoising

  • Harbin Institute of Technology

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

Abstract

Precise detection is very important for monitoring and controlling voltage flicker efficiently. As voltage flicker can be regarded as a narrowband signal, this paper proposed a novel detecting method based on Hilbert transform and wavelet denoising. By Hilbert transform, the flicker envelope can be extracted while higher harmonics and other noises contained in voltage flicker can be eliminated by Daubechles-8 wavelet. Simulation results showed that the higher harmonics and other noises could be filtered and amplitude and frequency of the modulation signal could be calculated precisely. Therefore, this detection method can be widely applied to developing intelligent and digital flickermeters.

Original languageEnglish
Title of host publication3rd International Conference on Deregulation and Restructuring and Power Technologies, DRPT 2008
Pages2286-2289
Number of pages4
DOIs
StatePublished - 2008
Event3rd International Conference on Deregulation and Restructuring and Power Technologies, DRPT 2008 - Nanjing, China
Duration: 6 Apr 20089 Apr 2008

Publication series

Name3rd International Conference on Deregulation and Restructuring and Power Technologies, DRPT 2008

Conference

Conference3rd International Conference on Deregulation and Restructuring and Power Technologies, DRPT 2008
Country/TerritoryChina
CityNanjing
Period6/04/089/04/08

Keywords

  • Hilbert transform
  • Voltage flicker
  • Wavelet denoising

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