论文信息 - Identification of stator insulation deterioration using on-line partial discharge testing

Identification of stator insulation deterioration using on-line partial discharge testing

This article analyzes why one cannot rely on an absolute partial discharge (PD) magnitude to assess the insulation condition of rotating machines. How to identify stator insulation deterioration effectively and reliably is discussed and demonstrated by case studies. The paper concludes that trending of PD activity is the reliable way to identify severe insulation deterioration in rotating machines.

[1] I. J. Kemp,et al. Partial discharges in HV machines; initial considerations for a PD specification , 1992 .

[2] J.T. Holboll,et al. Frequency dependent PD-pulse distortion in rotating machines , 1996, Conference Record of the 1996 IEEE International Symposium on Electrical Insulation.

[3] I. J. Kemp,et al. Pulse propagation in rotating machines and its relationship to partial discharge measurements , 1992, Conference Record of the 1992 IEEE International Symposium on Electrical Insulation.

[4] I. J. Kemp,et al. Towards a new partial discharge calibration strategy based on the transfer function of machine stator windings , 1996 .

[5] G. C. Stone,et al. Partial discharge. XXV. Calibration of PD measurements for motor and generator windings-why it can't be done , 1998 .

[6] H. Zhu,et al. Increased sensitivity of capacitive couplers for in-service PD measurement in rotating machines , 1999 .

[7] J. S. Johnson,et al. Slot Discharge Detection Coil Surface and Core of High-Voltage Stator Windings , 1951, Transactions of the American Institute of Electrical Engineers.