A method based on CNN and FFT‑ELM for fault identification and location of transmission lines
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(1.Handan Electric Power Supply Company, State Grid Hebei Electric Power Co., Ltd., Handan 056002,China;2.Hebei Silicon Valley Academy,Handan 057151,China)

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TM863

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    Abstract:

    It is one of the most important problems in power system reliability to detect the fault types and locations of transmission lines in time and accurately.Th is paper presents an approach for fault identification and location of transmission lines based on convolutional neural networks (CNN) paralled with extreme learning machine (ELM) based on fast Fourier transform (FFT). First, CNN is constructed with fault voltage sequence diagram as input. Then FFT is used to decompose the fault voltage data in time domain and extract the peak voltage and phase angle of each frequency band as fault feature samples. The ELM network is then constructed by taking the extracted fault feature sample set as input. Finally, the two neural networks are fused by the feature fusion layer to output the fault type and location results. Experimental results show that the accuracy of the method is 99.95%, the error of fault location is less than 500 m and the average error is 263.5 m; the reliability of the method is better than other models.

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裴东锋,刘 勇,闫柯柯,郭 威,宋福如,田志杰.一种基于CNN与FFT‑ELM的输电线路故障识别与定位方法[J].电力科学与技术学报英文版,2024,(1):164-170. PEI Dongfeng, LIU Yong, YAN Keke, GUO Wei, SONGFuru, TIAN Zhijie. A method based on CNN and FFT‑ELM for fault identification and location of transmission lines[J]. Journal of Electric Power Science and Technology,2024,(1):164-170.

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  • Received:
  • Revised:
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  • Online: April 22,2024
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