Estimation of Fault Location on a Power Line using the Time-Frequency Domain Reflectometry

절연전선 결함 위치 추정에 대한 시간-주파수 영역 반사파 계측법의 적용

  • 두승호 (연세대학교 전기전자공학과) ;
  • 곽기석 (연세대학교 전기전자공학과) ;
  • 박진배 (연세대학교 전기전자공학과)
  • Published : 2008.02.01

Abstract

In this paper, we introduce a new method for detecting and estimating faults on a power line using the time-frequency domain reflectometry system. The system rests upon time-frequency signal analysis and uses a chirp signal which is multiplied by Gaussian envelope. The chirp signal is used as a reference signal, and we can get the reflected signal from a fault on a wire. To detect and estimate faults, we analyze the reflected signal by Wigner time-frequency distribution function and normalized time-frequency cross correlation function. In this paper we design an optimal reference signal for power line and implement a system for estimating fault distance on a power line with the TFDR implemented by PXI equipments. This approach is verified by some experiments with HIV 2.25mm power lines.

Keywords

References

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