Detection and Localization of Electrical Power Quality Disturbances

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2014 by IJETT Journal
Volume-11 Number-4                          
Year of Publication : 2014
Authors : Wai Phyo Khaing , Theingi Zin , Hla Myo Tun


Wai Phyo Khaing , Theingi Zin , Hla Myo Tun. "Detection and Localization of Electrical Power Quality Disturbances", International Journal of Engineering Trends and Technology (IJETT), V11(4),163-168 May 2014. ISSN:2231-5381. published by seventh sense research group


Power quality disturbance is an issue that is gaining the attention of researchers, electrical utilities and customers. For developing tools for power quality (PQ) analysis and diagnosis PQ data is required. Therefore the generation of the typical power quality disturbances by using the mathematical equations is presented in this paper. PQ signal analysis carried out using transformation techniques that have its own advantages and limitations. Wavelet transform is particularly useful in detecting discontinuities in signals, and this makes it appropriate for detection of disturbances in power quality. In this work, Mathematical models for various PQ signal disturbances are developed with the goal of detecting and localization them using wavelet transform. Various types of mother wavelets were used to process different power quality disturbance signals. The comparison results show clearly that PQ disturbances are detected and the exact location of the disturbance can also be found on the time scale.


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PQ Disturbance Signal, Wavelet, Detection, MATLAB.