基于特征增强的变电站保护装置录波通道同源匹配研究  

Matching of homologous recording channels of substation protection devices based on feature enhancement

作　　者：彭曙蓉[1] 郭丽娟 陈慧霞 王冠南 PENG Shurong;GUO Lijuan;CHEN Huixia;WANG Guannan(School of Electrical&Information Engineering,Changsha University of Science&Technology,Changsha 410114,China;Electric Power Research Institute,State Grid Jiangxi Electric Power Co.,Ltd.,Nanchang 330096,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410114 [2]国网江西省电力有限公司电力科学研究院,江西南昌330096

出　　处：《电力科学与技术学报》2024年第6期53-59,共7页Journal of Electric Power Science And Technology

基　　金：国网江西省电力有限公司科技项目(52182022000A);湖南省教育厅重点项目(20A021);国家自然科学基金(52177069)。

摘　　要：继电保护装置是采集故障录波数据的重要设备之一。对比分析同源录波数据可以实现故障诊断,但是由于没有规范录波通道的命名格式,导致录波通道同源匹配困难。对此提出一种基于特征增强的保护装置录波通道同源匹配方法。首先,使用同义词替换、文本扩充和正则表达式算法对录波通道名称进行特征增强;然后,使用Pkuseg分词工具对录波通道名称进行分词,使用自定义的停用词表去除录波通道名称中的停用词;最后,使用TF-IDF方法将录波通道名称处理为数字向量形式,并使用余弦相似度算法计算录波通道名称之间的相似度,根据相似度大小判断同源录波通道。算例结果表明,所提方法能充分挖掘录波通道名称的关键信息并提高录波通道同源匹配的准确率。Relay protection device is one of the important equipment for collecting fault recording data.Comparison and analysis of homologous recording data can realize fault diagnosis,but due to the lack of standardization for the naming format of the recording channel,it is difficult to match the homologous recording channels.In this paper,a matching method for homologous recording channels of protection devices based on feature enhancement is proposed.Firstly,the recording channel names are feature-enhanced by means of synonym replacement,text expansion,and regular expression algorithms.Then,the Pkuseg word segmentation tool is used to segment the recording channel names,and a customized stop word list is utilized to remove the stop words in the recording channel names.Finally,the term frequency‑inverse document frequency(TF-IDF)method is used to process the recording channel names into the form of digital vectors,and the cosine similarity algorithm is used to calculate the similarity between the recording channel names.The homologous recording channels are judged according to their similarity.The example results show that the proposed method can fully explore the key information of the recording channel names and improve the accuracy of the matching of homologous recording channels.

关 键 词：保护装置录波同源匹配 文本匹配 特征增强 余弦相似度 

分 类 号：TM631[电气工程—电力系统及自动化]