基于经验小波变换(EWT)的贯通式同相牵引直接供电系统纵向保护研究OACSTPCDEI
Research on the longitudinal protection of a through-type cophase traction direct power supply system based on the empirical wavelet transform
根据贯通式同相牵引直接供电系统牵引网线路两端特有的边界结构特点,提出一种基于经验小波变换的牵引网线路纵联保护方案.由于边界对故障信号高频分量的衰减作用,导致区内外故障时,边界两侧高频暂态能量比值不同.区内故障时,区内线路两端检测点高频暂态能量均大于相邻线路检测点高频能量；区外故障时,区内线路检测点高频能量将小于相邻线路检测点高频能量.故采用经验小波变换对所采集的故障电流信号进行分解处理,得到故障信号高频暂态能量,利用牵引网线路两端,边界两侧高频暂…查看全部>>
This paper proposes a longitudinal protection scheme utilizing empirical wavelet transform(EWT)for a through-type cophase traction direct power supply system,where both sides of a traction network line exhibit a distinctive boundary structure.This approach capitalizes on the boundary's capacity to attenuate the high-frequency component of fault signals,resulting in a variation in the high-frequency transient energy ratio when faults occur inside or outside t…查看全部>>
李璐;张泽端;蔡旺;庄启康;毕贵红;邓健;陈仕龙;阚小瑞
贯通式同相牵引直接供电系统牵引网经验小波纵联保护
Through-typeCophase traction direct power supply systemTraction networkEmpirical wavelet transform(EWT)Longitudinal protection
《全球能源互联网（英文）》 2024 (2)
206-216,11
This work was supported by the National Natural Science Foundation of China(51767012),Curriculum Ideological and Political Connotation Construction Project of Kunming University of Science and Technology(2021KS009),and Kunming University of Science and Technology Online Open Course(MOOC)Construction Project(202107).
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