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http://dx.doi.org/10.5370/KIEE.2011.60.8.1460

Development of the Algorithm for Discriminating Faults from Variation using Wavelet Transform  

Seo, Hun-Chul (성균관대학교 정보통신공학부)
Lee, Soon-Jeong (성균관대학교 정보통신공학부)
Kim, Chul-Hwan (성균관대학교 정보통신공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.8, 2011 , pp. 1460-1466 More about this Journal
Abstract
This paper proposes the algorithm for discriminating faults from the variation due to the operation of non-linear components to prevent the mal-operation of protection relay in the distribution system. An IEEE 13 node test feeder is modeled to analyze the characteristics of the fault and each variation using EMTP-RV. Simulations with various operating conditions of transformers, non-linear loads, and unbalanced loads are performed using the test feeder model. Based on simulation results, the wavelet transform is adopted to analyze the current waveforms from the faults and variations to find out the differences between them and the algorithm for discriminating faults from the variation is proposed. The proposed algorithm is verified by using the current waveforms simulated in the KEPCO's distiribution system and IEEE 13 node test feeder.
Keywords
EMTP-RV; Fault; IEEE 13 node test feeder; Variation; Wavelet Transform;
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