Vevey two Boolean parameter spectral clustering method PD signal high voltage cable

The present invention relates to a high-voltage cable a discharge signal Vevey two Boolean parameter clustering analysis, the method comprising the steps of: (1) high-speed signal acquisition card cable discharge high frequency voltage transformer coupled obtained; (2) Acquisition computer setting and storage of the detection signal; (3) establishing NQ distribution curve; and (4) obtaining a characteristic profile clustering; (5) a discharge type determination results. Two Boolean parameter Vevey spectrum clustering method proposed by the present invention can cross to high voltage power cable partial discharge characteristics linked polyvinyl accurately extracted, by establishing a discharge frequency (N) - discharge quantity (Q) of the correlation curve, the two spectra Vevey Boolean parameter distribution on the α-β plane, by distinguishing the different types of discharge characteristic feature clustering to identify various types of discharge defect.