迭代EMD-ICA与Levkov联合的瞬态响应工频干扰抑制方法  

Anti-power Interference Method Combining Iterative EMD-ICA and Levkov for Transient Response

作　　者：任杰 薛钟 王浩 董贝 REN Jie;XUE Zhong;WANG Hao;DONG Bei(Nanjing SAC Power Grid Automation Co.,Ltd.,Nanjing 211153,China)

机构地区：[1]南京国电南自电网自动化有限公司,江苏南京211153

出　　处：《电工技术》2024年第11期11-13,18,共4页Electric Engineering

摘　　要：瞬态响应信号的获取过程中不可避免会引入工频干扰及工频谐波干扰,且具有非平稳小信号、工频干扰频率游动和频带混叠的特点,常规方法处理效果较差。针对该问题,提出一种基于迭代EMD-ICA与Levkov联合的瞬态响应工频干扰抑制方法。将EMD和ICA结合起来,通过EMD构造参考信号,从而满足ICA的使用条件来进行工频干扰抑制,由迭代EMD-ICA来克服工频频率游动的问题,使用Levkov法进行再次滤波来解决工频谐波干扰问题。In the process of acquiring transient response signals,power frequency interference and power frequency harmonic interference will inevitably be introduced,which feature non-stationary small signal,unfixed interference frequency swimming and frequency band aliasing,making the conventional methods inadaptable.Trying to address this problem,this paper proposes a transient response power frequency interference suppression method based on iterative EMD-ICA and Levkov combination.The EMD and ICA are combined,and the reference signal is constructed through EMD,so that the power frequency interference suppression can be carried out to meet the conditions of ICA use.The problems of power frequency swimming and power frequency harmonic interference are overcome by iterating EMD-ICA Levkov method,respectively.

关 键 词：瞬态响应信号 工频干扰 EMD ICA Levkov 

分 类 号：TN911.7[电子电信—通信与信息系统]