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International Journal of Intelligent Systems and Applications(IJISA)

ISSN: 2074-904X (Print), ISSN: 2074-9058 (Online)

Published By: MECS Press

IJISA Vol.3, No.3, May. 2011

The Identification of Internal and External Faults for±800kV UHVDC Transmission Line Using Wavelet based Multi-Resolution Analysis

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Author(s)

Shu Hongchun, Tian Xincui, Dai Yuetao

Index Terms

Component;UHVDC transmission line;t boundary unit;Multi-Resolution Analysis

Abstract

There is a smoothing reactor and DC filter between the inverter and the direct current line to form a boundary in the HVDC transmission system. Since this boundary presents the stop-band characteristic to the high frequency transient voltage signals, the high-frequency transient voltage signal caused by external faults through boundary will be attenuated and the signals caused by internal faults will be unchanged. The wavelet analysis can be used as a tool to extract the feature of the fault to classify the internal fault and the external fault in HVDC transmission system. This paper explores the new method of wavelet based Multi-Resolution Analysis for signal decomposition to classify the difference types fault.

Cite This Paper

Shu Hongchun, Tian Xincui, Dai Yuetao,"The Identification of Internal and External Faults for±800kV UHVDC Transmission Line Using Wavelet based Multi-Resolution Analysis", International Journal of Intelligent Systems and Applications(IJISA), vol.3, no.3, pp.47-53, 2011. DOI: 10.5815/ijisa.2011.03.07

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