The Experts below are selected from a list of 111306 Experts worldwide ranked by ideXlab platform
Yonghong Wang - One of the best experts on this subject based on the ideXlab platform.
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Traveling Wave Fault Location for Power Cables Based on Wavelet Transform
2007 International Conference on Mechatronics and Automation, 2007Co-Authors: Jiantao Sun, Xinlao Wei, Xishan Wen, Qingguo Chen, Yonghong WangAbstract:In this paper, Traveling Wave fault location equipment for power cables is designed, and the characteristic Waveforms of cable fault point broken down and not broken down are simulated respectively. Then a new Traveling Wave fault location method based on Wavelet transform is presented. Wavelet transform have good performance in denoising and singularity detection, which well solved the difficulty in identifying the initial point of the reflected Traveling Wave because of the local time-frequency characteristic. The fault distance can be calculated by the round-trip times which the Traveling Wave spends in the cable. The only required parameter is the length of cable. With the method, the result of fault location is not influenced by the change of propagation velocity of Traveling Wave. The correctness and effectiveness of this method are analyzed by computer simulation. The obtained results show an acceptable degree of accuracy for fault location.
Jiantao Sun - One of the best experts on this subject based on the ideXlab platform.
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Traveling Wave Fault Location for Power Cables Based on Wavelet Transform
2007 International Conference on Mechatronics and Automation, 2007Co-Authors: Jiantao Sun, Xinlao Wei, Xishan Wen, Qingguo Chen, Yonghong WangAbstract:In this paper, Traveling Wave fault location equipment for power cables is designed, and the characteristic Waveforms of cable fault point broken down and not broken down are simulated respectively. Then a new Traveling Wave fault location method based on Wavelet transform is presented. Wavelet transform have good performance in denoising and singularity detection, which well solved the difficulty in identifying the initial point of the reflected Traveling Wave because of the local time-frequency characteristic. The fault distance can be calculated by the round-trip times which the Traveling Wave spends in the cable. The only required parameter is the length of cable. With the method, the result of fault location is not influenced by the change of propagation velocity of Traveling Wave. The correctness and effectiveness of this method are analyzed by computer simulation. The obtained results show an acceptable degree of accuracy for fault location.
Michael B Petach - One of the best experts on this subject based on the ideXlab platform.
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Traveling Wave thermoacoustic electric generator
Applied Physics Letters, 2004Co-Authors: Scott Backhaus, E Tward, Michael B PetachAbstract:Traveling-Wave thermoacoustic heat engines have been demonstrated to convert high-temperature heat to acoustic power with high efficiency without using moving parts. Electrodynamic linear alternators and compressors have demonstrated high acoustic-to-electric transduction efficiency as well as long maintenance-free lifetimes. By optimizing a small-scale Traveling-Wave thermoacoustic engine for use with an electrodynamic linear alternator, we have created a Traveling-Wave thermoacoustic electric generator; a power conversion system suitable for demanding applications such as electricity generation aboard spacecraft.
Qingguo Chen - One of the best experts on this subject based on the ideXlab platform.
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Traveling Wave Fault Location for Power Cables Based on Wavelet Transform
2007 International Conference on Mechatronics and Automation, 2007Co-Authors: Jiantao Sun, Xinlao Wei, Xishan Wen, Qingguo Chen, Yonghong WangAbstract:In this paper, Traveling Wave fault location equipment for power cables is designed, and the characteristic Waveforms of cable fault point broken down and not broken down are simulated respectively. Then a new Traveling Wave fault location method based on Wavelet transform is presented. Wavelet transform have good performance in denoising and singularity detection, which well solved the difficulty in identifying the initial point of the reflected Traveling Wave because of the local time-frequency characteristic. The fault distance can be calculated by the round-trip times which the Traveling Wave spends in the cable. The only required parameter is the length of cable. With the method, the result of fault location is not influenced by the change of propagation velocity of Traveling Wave. The correctness and effectiveness of this method are analyzed by computer simulation. The obtained results show an acceptable degree of accuracy for fault location.
Xishan Wen - One of the best experts on this subject based on the ideXlab platform.
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Traveling Wave Fault Location for Power Cables Based on Wavelet Transform
2007 International Conference on Mechatronics and Automation, 2007Co-Authors: Jiantao Sun, Xinlao Wei, Xishan Wen, Qingguo Chen, Yonghong WangAbstract:In this paper, Traveling Wave fault location equipment for power cables is designed, and the characteristic Waveforms of cable fault point broken down and not broken down are simulated respectively. Then a new Traveling Wave fault location method based on Wavelet transform is presented. Wavelet transform have good performance in denoising and singularity detection, which well solved the difficulty in identifying the initial point of the reflected Traveling Wave because of the local time-frequency characteristic. The fault distance can be calculated by the round-trip times which the Traveling Wave spends in the cable. The only required parameter is the length of cable. With the method, the result of fault location is not influenced by the change of propagation velocity of Traveling Wave. The correctness and effectiveness of this method are analyzed by computer simulation. The obtained results show an acceptable degree of accuracy for fault location.
