摘要
分析了采用12脉波整流机组和24脉波整流机组进行整流的城市轨道交通牵引供电系统所产生谐波的特征。提出将小波变换应用于城市轨道交通牵引供电系统的谐波分析并进行仿真。结果表明:小波变换可将城市轨道交通牵引供电系统谐波中的高频成分逐步分离,减少高频谐波成分对电力系统的污染,对实现城市轨道交通牵引供电系统谐波信号的高分辨率检测具有很好的应用价值。
The harmonic of traction power system of UMT adopts 12 pulse and 24 pulse devices to commute seperately. This paper proposes that the wavelet transform be used in harmonic analysis of traction power system of urban mass transit with simulation. The results expressed that the high-frequency harmonic of signal could be separated and its pollution be decreased if only the wavelet transform is used. It＇ s of great value to realize high-distinction measure on traction power system of urban mass transit.
出处
《城市轨道交通研究》
2007年第2期15-19,共5页
Urban Mass Transit
关键词
城市轨道交通
牵引供电系统
谐波
小波变换
urban mass transit, traction power system, harmonic, wavelet transform
