Algorithms of wavelet transform in ultra-high-speed protection for transmission line

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作者：
School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China [1 ]
不详 [2 ]
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来源：
Hsi An Chiao Tung Ta Hsueh | 2008年 / 2卷 / 194-198期
关键词：
Algorithms - EHV power transmission - UHV power transmission - Wavelet transforms;
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摘要：
Two algorithms of wavelet transform, Mallat algorithm and lifting scheme are adopted to realize the ultra-high-speed protection for EHV transmission line, and the performance is investigated. Through a large number of ATP simulations and comparison of operation speed, requirement for auxiliary memory, sensitivity, reliable protection zone between Mallat algorithm and lifting scheme, it indicates that lifting scheme enables to evidently improve the performance of ultra-high-speed protection on operation speed and memory requirement without effects on the other characteristics, and the order of wavelet vanishing moment ought to be selected properly for ultra-high-speed protection.
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