Vol.5 No.2
Year: 2011
Issue: Oct-Dec
Title: Time-Frequency Domain Techniques For Identification Of Power System Transients
Author Name: Ashwani Kumar Chandel, P. Srikanth
Synopsis:
In the present work power system transient disturbances using Stockwell and Hartley Stockwell transforms have been identified. Stockwell transform (ST) is utilized previously for the real time prediction of the disturbance as it is able to accurately determine the sudden burst in the signal. However, in some cases the frequency resolution of ST is low. Consequently, Hartley Stockwell transform (HST) has been proposed which has a good frequency resolution. A comparison of proposed HST technique with ST considering various test cases has been carried out, which shows its efficacy.
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