Title :
Analysis of partial discharge pulse propagation along generator stator windings
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, Vic., Australia
Abstract :
A generator stator winding consists of a number of stator bars and overhang connections. Due to the complicated winding structure and the steel core, the attenuation and distortion of a partial discharge (PD) pulse transmitted through the winding are complicated and have the nature of frequency-dependence. This paper gives an explanation of PD pulse propagation phenomenon in the winding through theoretical analysis on different models and experimental investigations on a number of generators. A low impulse voltage method and associated digital analysis techniques have been developed to determine the frequency characteristics of travelling waves in the winding
Keywords :
electric generators; electromagnetic wave absorption; partial discharges; stators; transient response; complicated winding structure; digital analysis techniques; frequency characteristics; frequency-dependence; generator stator windings; impulse response method; low impulse voltage method; overhang connections; partial discharge attenuation; partial discharge distortion; partial discharge pulse propagation analysis; stator bars; steel core; travelling waves; Attenuation; Capacitance; Frequency; Low voltage; Partial discharges; Pulse generation; Pulse measurements; Stator bars; Stator cores; Stator windings;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.849969
