摘要
:对于大型电机来说 ,局部放电信号的极性对于局放类型的判别有着重要的意义 ,但对于在线监测设备 ,由于存在干扰 ,极性的提取相当困难。文中介绍了局放信号极性与放电类型之间的关系 ,提出了用小波包算法提取信号极性的方法。仿真表明 ,该方法是可行的 。
The polarity of the partial discharge (PD) signal is very useful for the judgment of the possible root cases of different partial discharge. However, it is difficult to get the polarity information of PD for on line monitoring system due to noise. The relationship between the different class PD and polarity of PD signal is discussed in this paper, the algorithm using Wavelet Packets (WP) to distinguish the polarity of PD signal is given. Simulation results show that this method is feasible and can pick up the polarity information of PD under strong interference.
出处
《电网技术》
EI
CSCD
北大核心
2001年第1期30-33,37,共5页
Power System Technology
