摘要
研究了水轮发电机定子绕组中典型的3种放电类型,并从500 MHz带宽示波器记录相应波形的幅值及上升时间区别不同的放电;对36 MW/10.5 kV水轮发电机的单根线棒和整机注人不同上升时间的模拟放电脉冲,得到了相应的波形及频谱。分析实验数据得到的放电脉冲在定子绕组中的某些传输衰减规律可为大型水轮发电机的局部放电在线监测提供依据。
Three typical kind of discharges in hydrogenera-tor stator insulations and their waveform differences in magnitude, pulse rise time are studied in this paper. Also.in the experiment, the simulated discharge pulses with different rise time are injected into the single generator bars and the whole stator winding of a 36 MW/10. 5 kV hydrogenerator, the responses are reported respectively. The frequency characteristics and attenuation of partial discharge pulse propagation in the stator windings are presented.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2003年第6期29-31,共3页
High Voltage Engineering
