A new protection criterion for high-voltage transmission line based on two-end transient signals

A new criterion of high-speed protection for high voltage transmission line based on the wavelet transform of two-end data is presented. By comparing the Lipschitz exponent and time of the wavelet modulus maxima of voltages of both ends, in-zone faults and out-zone faults and switching operations ca...

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Bibliographic Details
Main Authors: Huang Yizhuang, Xia Mngchao, Zhao Woquan, Liu Yinlai
Format: Conference Proceeding
Language:English
Subjects:
Discrete wavelet transforms
Power system protection
Power system reliability
Power system transients
Power transmission lines
Signal analysis
Transmission lines
Voltage
Wavelet analysis
Wavelet transforms
Online Access:Request full text
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Summary:A new criterion of high-speed protection for high voltage transmission line based on the wavelet transform of two-end data is presented. By comparing the Lipschitz exponent and time of the wavelet modulus maxima of voltages of both ends, in-zone faults and out-zone faults and switching operations can be distinguished. Simulations are carried out for testing the criterion, and the influences of fault locations and noises are discussed.
DOI:10.1109/TENCON.2002.1182711