Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags

M. F. Faisal, Azah Mohamed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Conventional methods currently used by power utilities for detecting power quality disturbances are primarily based on visual inspection of the rms value of voltage and current waveforms recorded by power quality recorders. The disturbance detection and classification results can help to identify any potential degrading trends in the electrical system. Once identified, inspection and preventive maintenance can be carefully targeted to the specific equipment, allowing us to avoid electrical disruptions altogether. However, to perform manual analyses on all the recorded voltage events is time consuming. Therefore an automated technique for analyzing the recorded signals is required. Currently, advanced signal processing techniques such as Short Time Fourier transform (STFT) and continuous wavelet transform (CWT) are widely used for analyzing voltage events. In the CWT approach, the original signal is multiplied with a function known as the mother wavelet. The mother wavelet is actually a prototype for generating the other window functions. However, there are many mother wavelet functions to be selected for generating the other functions and it is important to determine the best mother wavelet function for accurate detection of disturbances. In this paper, an evaluation is done on the various mother wavelet functions in analyzing actual three phase voltage sags. The mother wavelet that portrays the best resolution for the contours is selected for further detection and classification of voltage sags in the local supply systems.

Original languageEnglish
Title of host publicationPECon 2008 - 2008 IEEE 2nd International Power and Energy Conference
Pages657-661
Number of pages5
DOIs
Publication statusPublished - 2008
Event2008 IEEE 2nd International Power and Energy Conference, PECon 2008 - Johor Baharu
Duration: 1 Dec 20083 Dec 2008

Other

Other2008 IEEE 2nd International Power and Energy Conference, PECon 2008
CityJohor Baharu
Period1/12/083/12/08

Fingerprint

Electric potential
Power quality
Wavelet transforms
Inspection
Preventive maintenance
Fourier transforms
Signal processing

Keywords

  • Continuous wavelet transform
  • Power quality detection

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Faisal, M. F., & Mohamed, A. (2008). Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags. In PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference (pp. 657-661). [4762557] https://doi.org/10.1109/PECON.2008.4762557

Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags. / Faisal, M. F.; Mohamed, Azah.

PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference. 2008. p. 657-661 4762557.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Faisal, MF & Mohamed, A 2008, Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags. in PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference., 4762557, pp. 657-661, 2008 IEEE 2nd International Power and Energy Conference, PECon 2008, Johor Baharu, 1/12/08. https://doi.org/10.1109/PECON.2008.4762557
Faisal MF, Mohamed A. Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags. In PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference. 2008. p. 657-661. 4762557 https://doi.org/10.1109/PECON.2008.4762557
Faisal, M. F. ; Mohamed, Azah. / Comparing the performance of various mother wavelet functions in detecting actual 3-phase voltage sags. PECon 2008 - 2008 IEEE 2nd International Power and Energy Conference. 2008. pp. 657-661
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