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An Arc Fault Detection Method Based on Multidictionary Learning

Author

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  • Na Qu
  • Jianhui Wang
  • Jinhai Liu
  • Zhi Wang

Abstract

This paper uses the dictionary learning of sparse representation algorithm to detect the arc fault. Six kinds of characteristics, that is , the normalized amplitudes of 0Hz, 50Hz, 100Hz, 150Hz, 200Hz, and 250Hz in the current amplitude spectrum, are used as inputs. The output is normal work or arc fault. Increasing the number of training samples can improve the accuracy of the tests. But if the training samples are too many, it is difficult to be expressed by single dictionary. This paper designs a multidictionary learning method to solve the problem. Firstly, n training samples are selected to form s overcomplete dictionaries. Then a dictionary library consisting of s dictionaries is constructed. Secondly, t ( t ≤ s ) dictionaries are randomly selected from the dictionary library to judge the test results, respectively. Finally, the final detest result is obtained through the maximum number of votes, that is , the modality with the most votes is the detest result. Simulation results show that the accuracy of detection can be improved.

Suggested Citation

  • Na Qu & Jianhui Wang & Jinhai Liu & Zhi Wang, 2018. "An Arc Fault Detection Method Based on Multidictionary Learning," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-8, December.
    • Handle: RePEc:hin:jnlmpe:1058982
    DOI: 10.1155/2018/1058982
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    Cited by:

    1. Wenqian Jiang & Bo Liu & Zhou Yang & Hanju Cai & Xiuqing Lin & Da Xu, 2023. "Non-Intrusive Arc Fault Detection and Localization Method Based on the Mann–Kendall Test and Current Decomposition," Energies, MDPI, vol. 16(10), pages 1-16, May.

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