Title :
A high frequency model for the analysis of partial discharge propagation along generator stator windings
Author :
Major, S. ; Su, Q.
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, Vic., Australia
Abstract :
A new model has been developed to analyse pulse propagation along generator stator windings. In this model, each phase is simulated by a combination of lumped π elements incorporating frequency-dependent effects using a complex frequency-dependent function. Through the use of such a model, current practical limitations which prevent extensive testing on large generators can be overcome. The modelling technique is then a viable alternative to investigating the transient behaviour of an operational generator under external impulses or partial discharges inside the winding. Calculated results have shown a linear time delay of travelling wave and a moderate attenuation of PDs in a generator stator winding
Keywords :
AC generators; equivalent circuits; lumped parameter networks; machine insulation; machine theory; partial discharges; stators; surges; transient analysis; 500 MW; complex frequency-dependent function; equivalent circuit model; external impulses; frequency-dependent effects; generator stator windings; high frequency model; linear time delay; lumped π elements; partial discharge attenuation; partial discharge propagation analysis; phase simulation; pulse propagation; surge phenomena; transient behaviour; travelling wave; Attenuation; Coils; Computational modeling; Equivalent circuits; Frequency; Partial discharges; Power system modeling; Pulse generation; Stator cores; Stator windings;
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.1998.704722
