• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 15 Issue 5
Oct.  2002
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Article Contents
ZHANG Xiu-feng, GOU Shao-bo. Fault Detection of Subway Feed Lineby Means of Wavelet Transform[J]. Journal of Southwest Jiaotong University, 2002, 15(5): 548-552.
Citation: ZHANG Xiu-feng, GOU Shao-bo. Fault Detection of Subway Feed Line by Means of Wavelet Transform[J]. Journal of Southwest Jiaotong University, 2002, 15(5): 548-552.

Fault Detection of Subway Feed Line by Means of Wavelet Transform

  • Publish Date: 25 Oct 2002
  • A comprehensive analysis is made of the characteristics of the traction current, pickup current and fault current of subways. It is shown that the protection performance caused by differential current increment is mainly determined by the separation effect of current increment, the current change rate di/dtand the checkout precision of every current increment. Since common detection and separation ways have poor anti-interference and unacceptable checkout precision, wavelet transform is used to detect the surge current. Then based on this, the every current increment is extracted out to solve the above problems. Simulation experiments prove that applying wavelet transform to current detection is more practicable and effective than other detecting ways.

     

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    通讯作者: 陈斌, bchen63@163.com
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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