电器与能效管理技术 ›› 2024, Vol. 0 ›› Issue (2): 13-20.doi: 10.16628/j.cnki.2095-8188.2024.02.003

• 电弧检测与研究 • 上一篇    下一篇

基于改进MobileNet的串联电弧故障检测方法

郑力, 鲍光海   

  1. 福州大学 电气工程与自动化学院, 福建 福州 350108
  • 收稿日期:2023-07-08 出版日期:2024-02-28 发布日期:2024-03-28
  • 作者简介:郑力(1996—),男,硕士研究生,研究方向电弧故障检测与保护装置研究。|鲍光海(1977—),男,教授,博士,研究方向为电器及其系统智能化与故障诊断。
  • 基金资助:
    福建省科技计划项目(2023H0007)

Series Arc Fault Detection Method Based on Improved MobileNet

ZHENG Li, BAO Guanghai   

  1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
  • Received:2023-07-08 Online:2024-02-28 Published:2024-03-28

摘要:

针对非线性负载和复杂组合负载发生串联电弧故障时检测效果不理想,提出一种基于改进轻量型网络MobileNet的串联电弧故障检测方法。根据磁通不对称分布将中性线和相线同时穿过电流互感器获取高频电流耦合信号,通过在实验室模拟大量电弧故障实验,获得国标规定7种负载与常见家用电器5种负载的各类电弧故障样本,运用数据增强生成数据集进行训练并测试,最后将串联电弧故障检测网络模型搭载于电弧故障保护样机上,进行在线检测测试。实验结果表明,所提方法能有效识别串联电弧故障,且有利于实现电弧故障保护器的产品化。

关键词: 串联电弧故障, 不对称分布, 轻量型网络, 故障检测

Abstract:

A series arc fault detection method based on an improved lightweight network MobileNet is proposed to adress the unsatisfactory detection performance of series arc faclts with noulinear loads and complex combination loads. According to the asymmetric distribution of magnetic flux, the neutral and phase lines are simultaneously passed through the current transformer to obtain the high-frequency current coupling signals. By simulating a large number of arc fault experiments in the laboratory, various arc fault samples are obtained for 7 types of loads specified in the national standard and 5 types of loads commonly used in household appliances. Data augmentation is used to generate datasets for training and testing. Finally, the arc fault detection network model is mounted on the arc fault protection prototype for online detection testing.The experimental results show that the proposed method can effectively identify series arc faults and is conducive to the productization of arc fault protectors.

Key words: series arc fault, asymmetrical distribution, lightweight network, fault detection

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