摘要
将二维小波分析应用于配电网单相接地故障选线中,通过构造零序电流的解析信号,实现了对故障暂态信号幅值和相位相结合的分析,是一种接地选线的新方法。相对于单纯考虑幅值或相位的方法,这种结合分析能够更充分地提取丰富的故障暂态量特征信息,从而更加准确有效地实现故障选线。
Two-dimensional wavelet analysis is applied to detection of single-phase earth faults in distribution network; by structuring analytic signals of zero-sequence current, the analysis combining amplitude and phase of fault transient signals is realized, which is a new method for earth fault detection. Compared with the use of single amplitude or single phase. applying combined signal can obtain more details of transient signal, and the fault can be located more exactly and effectively.
出处
《广东电力》
2008年第11期9-12,共4页
Guangdong Electric Power
关键词
HILBERT变换
二维小波分析
配电网
单相接地故障
lqilbcrt transform
two-dimensional wavelet analysis
power distribution network
single-phase earth fault
