Title :
Comparison of on-line and off-line PD analysis on stator insulation of turbogenerators
Author :
Zondervan, J.P. ; Gulski, E. ; Smit, J.J. ; Krieg-Wezelenburg, M.G.
Author_Institution :
High Voltage Lab., Delft Univ. of Technol., Netherlands
Abstract :
In this contribution, results of PD pattern analysis of different defects in the stator insulation for different detection methods are discussed. Samples of complete stator windings with intentionally introduced defects have been used for this purpose. The PD signals have been detected and analyzed in two ways: 1. Using the conventional PD detection technique according to IEC 270 recommendation. 2. Using the VHF detection technique apt for on-line measurements. Rogowski coils and stator slot couplers in combination with a spectrum analyzer have been used to measure the VHF response of PD signals
Keywords :
insulation testing; machine insulation; machine testing; partial discharge measurement; stators; turbogenerators; IEC 270; Rogowski coil; VHF response; defect detection; off-line PD analysis; on-line PD analysis; pattern analysis; slot coupler; spectrum analyzer; stator insulation; turbogenerator winding; Assembly; Circuit faults; Circuit testing; Coils; Insulation; Partial discharge measurement; Partial discharges; Stator windings; Turbogenerators; VHF circuits;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704717
