电瓷避雷器Issue(6)：11-19,9.DOI:10.16188/j.isa.1003-8337.2023.06.002
基于电压波形分割-聚类的配电网弧光接地辨识方法研究
Identification Method of Arc Grounding in Distribution Network Based on Voltage Waveform Segmentation and Clustering
摘要
Abstract
The author proposes a single-phase arc grounding fault identification method based on wave-form subsequence segmentation and joint three-phase voltage-zero-sequence voltage waveform feature extraction clustering,which is used to solve the traditional threshold-based judgment method for detec-ting arc-flash ground faults in distribution networks.is limited by current.In this method,the fault seg-ment of the voltage waveform of the oscilloscope is segmented first,and the waveform subsequences of the three-phase voltage and the zero-sequence voltage are established.Then,the waveform features are fully described and dimensionally reduced by means of characteristic index analysis and principal compo-nent analysis.Finally,the K-means clustering algorithm based on waveform subsequences is used to i-dentify faults on the feature distribution after dimensionality reduction.The experimental results show that the method has a high accuracy acquisition rate of 96.78%in the test samples,and has important practi-cal application value for distribution network fault monitoring and diagnosis.关键词
电压波形分割/波形子序列/特征分析/K-means聚类/弧光接地故障辨识Key words
voltage waveform segmentation/waveform subsequence/characteristic analysis/K-means clustering/identification of arc grounding fault引用本文复制引用
李琼,吴义辉,龙国华,邹阳,范瑞祥..基于电压波形分割-聚类的配电网弧光接地辨识方法研究[J].电瓷避雷器,2023,(6):11-19,9.基金项目
国网江西省电力有限公司项目(编号:52182023000X).Project supported by State Grid Jiangxi Electric Power Co.,Ltd.(No.52182023000X). （编号:52182023000X）
