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Energies 2018, 11(1), 61; https://doi.org/10.3390/en11010061

Performance Investigation and Optimization of a Novel Hybrid Saturated-Core Fault-Current Limiter Considering the Leakage Effect

1
School of Electrical Engineering, Wuhan University, No.299, Bayi Street, Wuchang District, Wuhan 430072, China
2
Department of Electrical Engineering, Graduate School of Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
3
Anhui Grid Co., Anhui Electric Power Research Institute, No.73, Jinzhai Road, Hefei 230022, China
4
State Grid Taiyuan Power Supply Company, No.89, Binzhou North Road, Taiyuan 030012, China
5
State Grid Yichang Power Supply Company, No.42, Chengdong road, Yichang 443000, China
*
Author to whom correspondence should be addressed.
Received: 20 November 2017 / Revised: 9 December 2017 / Accepted: 20 December 2017 / Published: 1 January 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

To reduce the requirement of DC-biasing capacity and improve the biasing ability of a permanent magnet (PM), a novel hybrid saturated-core fault-current limiter (HSCFCL) is proposed in this paper. Compared with traditional saturated-core fault-current limiter (SCFCL), the HSCFCL has the advantages of small size, low DC-biasing capacity, a high biasing ability of the PM and excellent limiting performance. Firstly, the principle and the magnetic circuit model of the HSCFCL are introduced. Then, the improvement of DC-biasing capacity with a PM is analyzed. In addition, the influence of the leakage-flux effect on the biasing ability of the PM is presented in detail, and a small-section optimal structure is proposed to improve the biasing ability of the PM. Finally, to validate the principle and performance of the HSCFCL, various electromagnetic simulations, optimization studies and experiments are carried out. The simulation and experimental results demonstrate the effectiveness of the proposed method. View Full-Text
Keywords: saturated-core fault-current limiter; DC biasing ability; permanent magnet; leakage flux effect; small section saturated-core fault-current limiter; DC biasing ability; permanent magnet; leakage flux effect; small section
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wei, L.; Chen, B.; Liu, Y.; Tian, C.; Yuan, J.; Bu, Y.; Zhu, T. Performance Investigation and Optimization of a Novel Hybrid Saturated-Core Fault-Current Limiter Considering the Leakage Effect. Energies 2018, 11, 61.

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