The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of the Algorithm for Discriminating Faults from Variation using Wavelet Transform

웨이블릿 변환을 이용한 고장과 Variation의 유형 구분 알고리즘 개발

  • 서훈철 (성균관대학교 정보통신공학부) ;
  • 이순정 (성균관대학교 정보통신공학부) ;
  • 김철환 (성균관대학교 정보통신공학부)
  • Received : 2011.05.13
  • Accepted : 2011.07.13
  • Published : 2011.08.01
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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.

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References

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