Abstract:For insulation condition assessment of HV power apparatus, partial discharge (PD) monitoring is one of the most effective techniques. However, on-line PD measurements are affected by high levels of electromagnetic interference (EMI) that makes sensitive PD detection very difficult. On the basis of crosscorrelation algorithm, this paper described a new PD extraction method which can reject noise from weak UHF signal. According to the analysis of PD feature, a double exponential model was setup. Then a damped os… Show more
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