基于多特征综合配电网接地故障高灵敏性检测研究  

Study on Highly Sensitive Detection of Grounding Faults in Multi-feature Integrated Distribution Networks

作　　者：李瑛 LI Ying(Le′an County Electric Power Company,Fuzhou 344300,China)

机构地区：[1]江西省抚州市乐安县电力公司,江西抚州344300

出　　处：《电工技术》2024年第16期196-199,共4页Electric Engineering

摘　　要：配电网的接地故障检测有助于提高工作效率。目前的研究大多聚焦于故障的某一特征量。通过对小波分析、快速傅里叶变换等方法的灵活使用,提取的故障相电流的暂态直流分量大小可作为检测故障相数的依据,因此提出了一个综合性的故障检测识别方法。结果表明,综合性检测方法对多种接地故障类型可准确且高效检测并识别故障。Grounding fault detection of distribution networks facilitates working efficiency improvement,of which most studies currently focus on the use of a single characteristic variable of the fault.In this paper,through the flexible use of means such as wavelet analysis,fast Fourier transform,etc.,it is indicated that the transient DC component of faulty phase current can be used as a criterion for detecting the number of faulty phase.Therefore a comprehensive fault detection and identification method is proposed,which has been proved accurate and efficient for various types of grounding faults.

关 键 词：多特征 综合配电网 接地故障检测 高灵敏性检测 

分 类 号：TM77[电气工程—电力系统及自动化]