For e.g. If i take sine wave input (it may have some small disturbance), after creating the fault @0.5s,that waveform will be more distorted than normal,that particular time i need to measure precisecly.
To measure time for sudden change in waveform
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Hi friends,
I am doing the fault location using wavelets. For that, am having two waveforms (aerial mode voltage(Va) & ground voltage (Vo)).
If, am creating fault,@0.5s, I need to find out the disturbance time of both waveforms, bcos both waveforms will take some time to respond.
Thanks!!!
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Wayne King
2012-3-26
For this, you will want to use either the continuous wavelet transform (cwt or cwtft), or a nondecimated wavelet transform (ndwt, or swt).
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Wayne King
2012-3-26
Then feel free to use any of those methods, see the documentation for examples. You should be able to localize the disturbances at small (fine) scales.
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