电器与能效管理技术 ›› 2023, Vol. 0 ›› Issue (11): 28-34.doi: 10.16628/j.cnki.2095-8188.2023.11.005

• 研究与分析 • 上一篇    下一篇

基于CNN的小电流接地故障多判据融合选线方法

唐亮星1, 李洪江1, 刘鑫1, 周庭栋2, 李盼盼3   

  1. 1.云南电网有限责任公司, 云南 昆明 650000
    2.云南电网有限责任公司 红河供电局, 云南 昆明 650000
    3.合肥溢鑫电力科技有限公司,安徽 合肥 230000
  • 收稿日期:2023-06-05 出版日期:2023-11-30 发布日期:2023-12-22
  • 作者简介:唐亮星(1986—),男,工程师,主要从事高电压技术、智能电网、电网建设研究。|李洪江(1986—),男,高级工程师,硕士,主要从事电力系统自动化研究。|刘鑫(1983—),男,高级工程师,学士,主要从事电力系统自动化研究。
  • 基金资助:
    云南电网公司科技计划资助项目(YNKJXM20220105)

Multi Criterion Fusion Method for Small Current Grounding Fault Line Selection Based on CNN

TANG Liangxing1, LI Hongjiang1, LIU Xin1, ZHOU Tingdong2, LI Panpan3   

  1. 1. Yunnan Power Grid Co., Ltd., Kunming 650000, China
    2. Honghe Power Supply Bureau of Yunnan Power Grid Co., Ltd., Kunming 650000,China
    3. Hefei Yixin Electrical Science and Technology Co.,Ltd., Hefei 230000, China
  • Received:2023-06-05 Online:2023-11-30 Published:2023-12-22

摘要:

针对配电网中小电流接地系统故障选线难、检测慢的问题,提出一种基于卷积神经网络(CNN)、利用傅里叶变换和小波包分解的小电流接地故障多判据融合的选线方法。将CNN用于小电流单相接地故障选线问题,将各线路零序电流经处理后的一些分量作为输入量,将故障线路作为输出量,经过大量数据训练后得到故障线路数学模型。当新的故障数据输入到模型中,根据映射关系可选择出故障线路。最后用MATLAB/Simulink进行仿真,验证所提方法的可行性。

关键词: 故障选线, 小电流接地, 卷积神经网络, 多判据融合

Abstract:

Aiming at the problems of difficult fault line selection and slow detection for the small and medium current grounded systems in distribution networks,a multi criterion fusion method for line selection of small current single-phase ground fault based on convolutional neural networks (CNN),Fourier transform and wavelet packet decomposition is proposed.CNN is applied to the problem of line selection for small current single-phase ground fault.Some components of the zero-sequence current of each line after processing are taken as input, and the fault line is taken as output.After a large amount of data training, the mathematical model of the fault line is obtained.When the new fault data is input into the model,the fault lines can be selected based on the mapping relationship.Finally, the feasibility of the proposed method is verified by the simulation using MATLAB/Simulink.

Key words: fault line selection, small current grounding, convolutional neural network (CNN), multi criterion fusion

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