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基于多通道神经网络的电力电缆缺陷智能识别方法研究

Research on Intelligent Recognition Method of Power Cable Defects Based on Multi channel Neural Network

  • 摘要: 在当前电力电缆缺陷识别过程中,主要依赖单通道神经网络提取脉冲信号特征,然而其捕获的特征信息存在片面性,致使最终缺陷识别结果不够准确。因此,提出基于多通道神经网络的电力电缆缺陷智能识别方法。对电力电缆高频电流信号开展归一化处理与小波阈值去噪操作,为后续的缺陷识别提供高质量的数据基础。把预处理后的高频电流信号输入多通道神经网络,借助深层次学习提取时序、图像、统计等多维度特征。利用注意力机制对各通道特征进行动态加权融合,并依靠全连接层中的分类函数区分不同类型融合特征,实现电力电缆缺陷智能识别。实验结果表明:该方法识别结果F1值保持在0.9以上,实现了电力电缆缺陷状态的精准识别。

     

    Abstract: In the current process of identifying defects in power cables, single channel neural networks are mainly relied on to extract pulse signal features. However, the feature information captured by them is one-sided, resulting in inaccurate final defect identification results. Therefore, a multi-channel neural network-based intelligent recognition method for power cable defects is proposed. Normalize the high-frequency current signals of power cables and perform wavelet threshold denoising operations to provide high-quality data foundation for subsequent defect identification. Input the preprocessed high-frequency current signal into a multi-channel neural network, and use deep learning to extract multidimensional features such as time series, images, and statistics. Using attention mechanism to dynamically weight and fuse the features of each channel, and relying on the classification function in the fully connected layer to distinguish different types of fused features, intelligent recognition of power cable defects is achieved. The experimental results show that the F1 value of the recognition result of this method remains above 0.9, achieving accurate recognition of the defect status of power cables.

     

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