NDLI: A novel single-ended fault location scheme and applications considering secondary circuit transfer characteristics

Content Provider	IEEE Xplore Digital Library
Author	Fei Xu Xinzhou Dong Bin Wang Shenxing Shi
Copyright Year	2015
Description	Author affiliation: State key Lab. Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Fei Xu; Xinzhou Dong; Bin Wang; Shenxing Shi)
Abstract	Identification of the wave fronts is the precondition of travelling wave based fault location. Many factors may affect a precise identification of the wave fronts, among which the transfer characteristics of the secondary circuit are in focus. The resonance nature of the secondary circuit which consists of current transformers and secondary cables causes certain noises in the recorded travelling waves. Hence, travelling wave based single-ended fault location is affected. Transfer characteristics of the secondary circuit are analyzed in the paper. High-frequency model of the secondary circuit is obtained and the transfer function is derived. The noises are proved to be two damped oscillation components mixed together. To overcome this, a novel single-ended fault location scheme is proposed. Impedance fault location algorithm, dyadic wavelet transform and Prony analysis are involved. A high-precise fault recording and location device is developed and implemented in several 220 kV substations in Shandong, China. Recorded waveforms of a single-phase-to-ground fault have proven both the analysis and the proposed fault location scheme.
Starting Page	1
Ending Page	5
File Size	468947
Page Count	5
File Format	PDF
ISBN	9781467380409
DOI	10.1109/PESGM.2015.7285906
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault location Oscillators Integrated circuit modeling Discrete wavelet transforms Hybrid fiber coaxial cables Substations travelling waves Dyadic wavelet transform damped oscillation Prony analysis secondary circuit
Content Type	Text
Resource Type	Article

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