Advanced SearchSearch Tips
Partial Discharge Ultrasonic Analysis for Generator Stator Windings
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Partial Discharge Ultrasonic Analysis for Generator Stator Windings
Yang, Yong-Ming; Chen, Xue-Jun;
  PDF(new window)
The objective of this research is to utilize the ultrasonic method to analyze the property of partial discharge (PD) which is generated by the winding of the insulation stator in the generator. Therefore, a PD measurement system is built based on ultrasonic and virtual instruments. Three types of PD models (internal PD model, surface PD model and slot PD model) have been constructed. With the analysis of these experimental results, this research has identified the ultrasonic signals of the discharges which were produced by three types of PD models. This analysis shows the different features among these PD types. Both the time domain and frequency domain of the ultrasonic signals are obviously different. In addition, an experiment based on a large rotating machine has been done to analyze ultrasonic noises. The result indicates that the ultrasonic noises can be wiped off by the filters and algorithms. The application of this system is convenient for the detection of early signs of insulation failure, which is an effective method for diagnosis of insulation faults.
Partial discharge (PD);Ultrasonic;Stator windings;Insulation;Generator;Motor;
 Cited by
Analysis of the partial discharge of ultrasonic signals in large motor based on Hilbert-Huang transform, Applied Acoustics, 2018, 131, 165  crossref(new windwow)
G. C. Stone, "Partial discharge diagnostics and electrical equipment insulation condition assessment," IEEE Trans. on Dielectrics and Electrical Insulation, vol.12, no.5, pp. 891-903, Oct. 2005. crossref(new window)

B.M. Oliver, "Directional Electromagnetic Couplers," Proceedings of the Institute of Radio Engineers, vol.42, no.11, pp.1686-1692, Nov. 1954.

I. A. Metwally, "Status review on partial discharge measurement techniques in gas-insulated switchgear/ lines," Electric Power Systems Research, vol.69, no.4, pp. 25-36, Apr. 2004. crossref(new window)

J.P. Van Bolhuis, E. Gulski, and J.J. Smit, "Monitoring and diagnostic of transformer solid insulation," IEEE Trans. on Power Delivery, vol.17, no.2, pp.528- 536, Apr. 2002.

Tapan K. Saha, "Review of Modern Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers," IEEE Trans. on Dielectrics and Electrical Insulation, vol.10, no.5, pp.903-917, Oct. 2003. crossref(new window)

J. Johnson and M. Warren, "Detection of slot discharges in HV stator windings during operation," Transactions of the American Institute of Electrical Engineers, vol.70, no.2, pp.1998-2000, Jul. 1951. crossref(new window)

S.R. Campbell and G.C. Stone, "Investigations Into the Use of Temperature Detectors as Stator Winding Partial Discharge Detectors," in Proceedings of the 2006 IEEE International Symposium on Electrical Insulation, Toronto, Canada, Jun. 2006.

H. Zhu, V. Green, and M. Sasic, "Identification of stator insulation deterioration using on-line partial discharge testing," IEEE Electrical Insulation Magazine, vol.17, no.6, pp.21-26, Nov. 2001. crossref(new window)

Kai Gao, Kexiona Tan, and Fuai Li, "PD pattern recognition for stator bar models with six kinds of characteristic vectors using BP network," IEEE Transactions on Dielectrics and Electrical Insulation, vol.9, no.3, pp. 381-389, Jun. 2002. crossref(new window)

Zezhong Wang, Chengrong Li, Pai Peng, Lijian Ding, Yimei Jia, Wei Wang, and Jingchun Wang, "Partial discharge recognition of stator winding insulation based on artificial neural network," in Proceedings of of the 2000 IEEE International Symposium on Electrical Insulation, Anaheim, USA, Apr. 2000.