南京信息工程大学学报2025，Vol.17Issue(2)：282-292,11.DOI:10.13878/j.cnki.jnuist.20240409002
基于同源录波数据的智能变电站主设备保护采样回路异常预警方法
Early warning of abnormalities in host device protection sampling loops of smart substations based on homologous waveform recording data
摘要
Abstract
The abnormalities in the host device protection sampling loops of smart substations are difficult to detect due to their characteristics of concealment,transience,and instability.Here,we propose an early warning scheme for the abnormal sampling loops of the host device protection in smart substations based on homologous waveform re-cording data.First,the occurrence of abnormal sampling loops is determined by reasonably setting the early warning thresholds and waveform analysis criteria.Second,a knowledge graph for the operation and maintenance of the sam-pling loops is constructed based on information of the equipment operation and maintenance manual related to the sampling loops,to realize the aided decision-making for handling abnormal sampling loops.Finally,a case study is carried out based on an actual defect in a substation.The results show that the scheme is effective in detecting the abnormalities in the sampling loops,and the constructed knowledge graph can provide decision-making references for operation and maintenance personnel in handling abnormalities,significantly reducing manual workload.关键词
采样回路/智能变电站/主设备保护/同源录波数据/异常预警/知识图谱Key words
sampling loop/smart substation/host device protection/homologous waveform recording data/early warning of anomalies/knowledge graph分类
动力与电气工程引用本文复制引用
曹海欧,俞力珉,张林,刘志仁,韩笑,戴志辉..基于同源录波数据的智能变电站主设备保护采样回路异常预警方法[J].南京信息工程大学学报,2025,17(2):282-292,11.基金项目
国网江苏省电力有限公司孵化项目(JF2023023) （JF2023023）
