전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제57권8호
  • /
  • Pages.1311-1317
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  • 2008
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

웨이블렛 변환을 이용한 HVDC 케이블 고장점 표정 알고리즘

A Fault Location Algorithm Using Wavelet Transformation for HVDC Cables

  • 발행 : 2008.08.01
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초록

In this paper, a fault location algorithm using wavelet transform is proposed for HVDC cable lines. The arriving instants of the first and second fault-induced backward travelling waves can be detected by using wavelet transform. The fault distance is estimated by using the time difference between the two instants of backward travelling waves and the velocity of the travelling wave. To distinguish between the backward wave from fault point and the backward wave from the remote end, polarities of backward waves are used. The proposed algorithm is verified varying with fault distances and fault resistances in underground cables of VSC(voltage source converter) HVDC system and CSC(Current Source Converter) HVDC respectively. Performance evaluations of the proposed algorithm shows that it has good ability for a fault location of HVDC cable faults.

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참고문헌

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