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A new approach to identifying faulty lines in distribution systems based on traveling wave refraction and coupling |
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| Authors: | Jiping Lu Jian Li Wenyuan Li Ying Li Yi Xue |
| Affiliation: | 1. College of Electrical Engineering, Chongqing University, Chongqing 400044, China;2. British Columbia Transmission Corporation, Suite 1100, Four Bentall Center, 1055 Dunsmuir Street, P.O. Box 49260, Vancouver, BC V7X 1V5, Canada;3. Southern District Power Supply Bureau, Guiyang City, China |
| Abstract: | A new method is presented to identify faulty lines in distribution systems equipped with current transformers only in two phases. The transmission characteristics of transient current traveling wave and the electromagnetic coupling relationships among phase wires are analyzed. The wavelet decomposition technique is used to retrieve the transient fault current information. The proposed method is verified by simulation results in which single phase-to-ground faults (SGF) in any phase can be identified in a fast, accurate and reliable way. |
| Keywords: | Distribution systems Electromagnetic coupling Faulty line identification Traveling wave Wavelet transform |
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