SIGNAL PROCESSING METHOD AND SIGNAL PROCESSING DEVICE OF PARTIAL DISCHARGE PULSE

摘要

PROBLEM TO BE SOLVED: To provide a means and a device capable of detecting easily a pulse signal caused by partial discharge from among pulse signals of electric signals such as a current or a voltage measured from an electric apparatus which is a measuring object.

SOLUTION: A signal processing method has a reception step of receiving a measured pulse signal, a transformation step of subjecting a received signal to discrete wavelet transformation by a Haar base, a comparison step of comparing a value transformed in the transformation step with a prescribed threshold, a selection step of selecting a comparison result having a prescribed relation in the comparison step, and a mapping step of mapping a result selected in the selection step on the time base.

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