M-6-Omicron局放在线.ppt

May 2002 28/11/2006 Experiences in On-site PD MeasurementsandProspects for PD Monitoring PD Measurements PD Measurements PD Measurements Synchronous Multi-channel PD Measuring System Synchronous Multi-channel PD Measuring System Synchronous Multi-channel PD Measuring System 3PARD - Internal PD Source Phase L1 3PARD - Common Mode Noise 3PARD - Example 3PARD - Example 3PTRD - time-of-flight correlation 3PTRD - time-of-flight correlation 3PTRD - comparison to 3PARD 3PTRD - comparison to 3PARD 3CFRD - multi-spectral correlation 3CFRD - multi-spectral correlation 3CFRD - Example ? OMICRON ? OMICRON May 2002 Dr. K. Rethmeier, Dr. M. Krüger, Dr. A. Kraetge, Dr. R. Plath, Dr. W. Koltunowicz A. Obralic, Prof. Dr. Kalkner CMD 2008 Beijing, ChinaApril 21-24, 2008 PD detection PD Noise CK, PD sensor IEC 60270,HF, VHF, UHF Single channel(multiplexer) Multi channel(synchronous) Denoising Identification CW reduction Filteranalog / digital Pulse reduction CPWA3PARD ... Defect type Pattern recognitionPRPD, PSA Defect location Time-of-flight,attentuation PD detection PD Noise 3-channel(synchronous) Denoising CW reduction Digital Filtervar. center frequency, var. bandwidth 3-phasecorrelation Clustering Cluster selection Inverse transformation Pattern recognition PRPD, PSA PD detection PD Noise 3-channel(synchronous) Denoising CW reduction Digital Filtervar. center frequency, var. bandwidth 3-phasecorrelation Clustering Cluster selection Inverse transformation Pattern recognition PRPD, PSA PC USB FO FO controller PD aq. unit Battery pack CD PC USB FO FO controller PD aq. unit Battery pack CD L1 L2 L3 L1 L2 L3 Inner PD Source L1L2L3 timeframe 1 μs Internal PD Source L1 3PARD = Three Phase Amplitude Relation Diagram L2 L3 L1 L1 L2 L3 External Noise L1 ≈ L2 ≈ L3 timeframe 1 μs Common Mode Noise 3PARD = Three Phase Amplitude Relation Diagram HV motoronline PD PSA PSA 3PARD = Three Phase Time Relation Diagram 3PARD = Three Phase Time