Detecting Partial Discharge in High Voltage Cables
First Claim
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1. A method for detecting partial discharge events comprising analysing an output from the cable using one or more substantially shift invariant wavelet transforms, and using the analysed signal to identify one or more peaks associated with a partial discharge.
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Abstract
A method for detecting partial discharge events comprising analysing an output from the cable using one or more substantially shift invariant wavelet transforms, and using the analysed signal to identify one or more peaks associated with a partial discharge. Preferably, the shift invariant transform is a stationary wavelet transform (SWT).
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17 Claims
- 1. A method for detecting partial discharge events comprising analysing an output from the cable using one or more substantially shift invariant wavelet transforms, and using the analysed signal to identify one or more peaks associated with a partial discharge.
- 6. A computer program for detecting partial discharges in a high voltage cable, the computer program being preferably on a data carrier or a computer readable medium, and comprising code or instructions for analysing an output from the cable using one or more substantially shift invariant wavelet transforms, and using the analysed signal to identify one or more peaks associated with the partial discharge.
- 11. A method for detecting partial discharge events comprising analysing an output from the cable using a stationary wavelet transform, and using the analysed signal to identify one or more peaks associated with the partial discharge.
- 14. A system for detecting partial discharge events, the system being configured to de-noise an output from the cable using one or more wavelet transforms that preserve one or more shift-invariant properties, and use the de-noised signal to identify one or more peaks associated with the partial discharge.
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