基于高频滤波算子的数字采样波形毛刺去除方法  

A burr removal method of digital sampling waveform based on high frequency eliminating operator

作　　者：刘健 张小庆 张志华 于太浩 郭琳云 常小强 吕锡林 LIU Jian;ZHANG Xiaoqing;ZHANG Zhihua;YU Taihao;GUO Linyun;CHANG Xiaoqiang;LÜXiin(State Grid Shaanxi Electric Power Research Institute,Xi'an 710100,China;Xi'an Xinghui Power Technology Co.,Ltd.,Xi'an 710065,China)

机构地区：[1]国网陕西省电力有限公司电力科学研究院,陕西西安710100 [2]西安兴汇电力科技有限公司,陕西西安710065

出　　处：《供用电》2024年第6期75-80,共6页Distribution & Utilization

基　　金：国家电网有限公司总部科技项目(5226SX22001C)。

摘　　要：为了滤除数字采样波形中的毛刺,构造了一种基于高频上冲击滤波算子与高频下冲击滤波算子的毛刺去除方法。通过论述其定义和作用方式,更加深入地探讨了通过设置附加限制条件和多次调整应用,以改进高频冲击滤波算子的性能。以小电流接地的配电网单相接地故障检测波形的去噪处理为例,详细说明了该方法的应用方式与处理效果,结果表明了方法的可行性与有效性。基于高频冲击滤波算子的毛刺去除方法,能够有效滤除采样信号波形中的毛刺,且不会对波形的有效信息产生不利影响。In order to eliminate the burrs in the digital sampling waveform,the high-frequency up-shock eliminating operator and the high-frequency down-shock eliminating operator are constructed.By discussing the definition and operation mode of these operators,the performance of the high-frequency impact filtering operator is explored in more depth by setting additional constraints and adjusting the application several times to improve the performance of the high-frequency impact filtering operator.Taking the denoising processing of single phase grounding fault detection waveforms of distribution networks with small current grounding as an example,the way of applying the method and the processing effect are explained in detail,The results show that the proposed approach is feasible and effective.The high frequency shock eliminating operator can effectively remove the burrs in the sampled signal without adversely affecting the effective information for fault detection.

关 键 词：配电网 小电流接地系统 单相接地 采样波形 数字滤波 消除毛刺 

分 类 号：TM71[电气工程—电力系统及自动化]