交流信号的干扰识别方法  

Interference Identification Method of AC Signal

作　　者：黄少锋[1] 李靖雯 黄怡凌 

机构地区：[1]华北电力大学电气与电子工程学院,北京 [2]南方电网数字电网研究院有限公司,广东 广州

出　　处：《智能电网（汉斯）》2021年第6期416-424,共9页Smart Grid

摘　　要：微机保护中通常使用全周傅氏算法对离散的交流采样数据进行分析,但是交流信号中存在干扰数据时,会对相量分析产生影响,得到错误的系统量测结果。本文提出了一种仅利用原始交流采样序列生成若干个校验序列的方法,以此为基础提出了交流信号中干扰数据的识别方法,通过仿真计算的结果验证了判据的可行性和有效性。该方法还可以应用于电气量的测量中。Full-cycle Fourier algorithm is usually used to analyze discrete AC sampling data in microcomputer protection. When there is interference data in AC signal, it will affect phasor analysis and get wrong system measurement results. In this paper, a method of generating several check sequences using only the original AC sampling sequence is proposed, and based on this, a method of identifying the interference data in AC signal is proposed. The feasibility and validity of the criterion are verified by simulation results. This method can also be applied to the measurement of electrical volume.

关 键 词：微机保护 全周傅氏算法 干扰数据 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]