A Novel Anti-interference Method for Partial Discharges On-line Measurement of Hv Power Cables
نویسندگان
چکیده
In order to extract the millivolt range partial discharge(PD) signals drown in the harsh electromagnetic interference for HV power cables, this paper presents a novel antiinterference method, based on fast fourier transform autothresholding method, 1-D discrete wavelet thresholding method and three phase amplitude and arrive-time difference method. This method is examined and proved to be effective on the power cable with actual interference. Moreover, the insulation condition assessment application of a 7.1km 220kV XLPE power cable line shows that the anti-interference effect is outstanding to eliminate field harsh interference, laying a good foundation for further PD pattern analysis and diagnosis.
منابع مشابه
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