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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 2000-14
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DIRECTIONAL PROTECTIVE RELAYING BASED ON POLARITY COMPARISONOF TRAVELLING WAVE BY USING WAVELET TRANSFORM

Dong Xingli. Dong Xinzhou, Zhang Yancang. Guo Xiaojun. Ge Yaozhong(1. Xi'an Jiaotong University. Xi'an 710049, China)(2. Tsinghua University. Beijing 100084. China)(3. Guodian Naming AutomaTion Co Ltd. Naming 210003. China)  
The fault information of tlavelling wave is detected. and then the principle of directional protective relaying basedon polarity comparison of travelling wave is analyzed by using wavelet transform. The problem of misoperatlon due toharmonic encountered by RADLA Is avoided by using wavelet transform. The relay action under different conditions issimulated and the problems have been solved. The results indicate that the principle of directional relay based on polaritycomparison of travelling wave by using wavelet transform is feasible.This project is supported by National Natural Science Foundation of China (No. 59877020).
【Fund】: 国家自然科学基金!资助项目 (5 98770 2 0 )
【CateGory Index】: TM773
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