The detection and location of power quality disturbances based on orthogonal wavelet packet transform

A novel method of power quality detection and location using orthogonal wavelet packet transform was proposed. First the theories of orthogonal wavelet packet transform and wavelet basis function choice were discussed; second power quality disturbances with white Gaussian noise in power frequency we...

Full description

Saved in:
Bibliographic Details
Published in2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies pp. 1831 - 1835
Main Authors Liyan Liu, Zhezhao Zeng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2008
Subjects
de-noising
Frequency
Orthogonal wavelet packet transform
Packaging
Power quality
Signal detection
signal location
Signal processing
soft threshold
Stein unbiased risk threshold
Transient analysis
universal threshold
Voltage fluctuations
Wavelet analysis
Wavelet packets
Wavelet transforms
Online AccessGet full text

Cover

More Information
Summary:A novel method of power quality detection and location using orthogonal wavelet packet transform was proposed. First the theories of orthogonal wavelet packet transform and wavelet basis function choice were discussed; second power quality disturbances with white Gaussian noise in power frequency were simulated; then, a soft-threshold method based on the concept of universal threshold and Stein unbiased risk threshold was given for solving the problem of de-noising in actual signal detection; finally power quality disturbances were detected and localized using orthogonal wavelet packet transform. The results show that the method proposed has a better detection performance; it has more accurate detection and location of the occurrence time and duration of transient. The method is suitable for detection of the transient and processing other non-time- varying signal.
DOI:10.1109/DRPT.2008.4523704