Design of a DC Resistive SFCL for Application to the 20 kV Distribution System
Design of a DC Resistive SFCL for Application to the 20 kV Distribution System
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DOI：
10.1109/tasc.2010.2043723
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发表时间：
2010-03
影响因子：
1.8
通讯作者：
A. Morandi;S. Imparato;G. Grasso;S. Berta;L. Martini;M. Bocchi;M. Fabbri;F. Negrini;P. Ribani
中科院分区：
文献类型：
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作者：
A. Morandi;S. Imparato;G. Grasso;S. Berta;L. Martini;M. Bocchi;M. Fabbri;F. Negrini;P. Ribani
用于交流应用的直流操作电阻式超导故障限流器（简称直流电阻式SFCL）基于“电阻式”和“整流器”故障限流器概念的协同使用，并允许超导体在接近直流的情况下运行。这种运行方式大大降低了交流损耗，因此在材料、电缆结构、绕组布局和低温方面开辟了全新的前景。本文介绍了一种应用于20 kV配电系统的直流阻性SFCL的设计。一个母线联络线的位置，标称速率为25 MVA被认为是案例研究。通过对电压暂态、谐波畸变和峰值故障电流的参数分析，得到了超导绕组的电阻和电感。基于优化后的MgB2电缆进行了真实的电子秤绕组的设计。对桥式整流器进行了详细的设计，并对二极管引起的功率损耗进行了评估。
A DC-operating resistive-type superconducting fault current limiter for AC applications (in short a DC Resistive SFCL) is based on the synergistic use of the "resistive" and the "rectifier" fault current limiter concepts, and allows the superconductor to operate in nearly DC current conditions. This regime of operation drastically reduces the AC losses and therefore opens up completely new perspectives with regard to the materials, the architecture of the cable, the layout of the windings and the cryogenics. In this paper the design of a DC resistive SFCL for application to the 20 kV distribution system is presented. A bus tie position with nominal rate of 25 MVA is considered as case study. The resistance and the inductance of the superconducting winding are arrived at by means of the parametric analysis of voltage transients, harmonic distortion and peak fault current. The design of the windings of the real scale device is carried based on a optimized MgB2 cable. The detailed design of the bridge rectifier is carried out and the power losses due to diodes are evaluated.