System Application of Flux-Coupling Superconducting Fault Current Limiting Switch

被引：0
|
作者：
Zhang L. [1 ]
Shi J. [1 ]
Yan S. [1 ]
Ren L. [1 ]
Tang Y. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Zhang, Lihui (izhanglihui@hust.edu.cn) | 2018年 / China Machine Press卷 / 33期
关键词：
Distance protection; Electromagnetic design; Flux-coupling superconducting fault current limiting switch (FC-SFCLS); Parameter selection; Revision method;
D O I：
10.19595/j.cnki.1000-6753.tces.171471
中图分类号：
学科分类号：
摘要：
With the development of society and economy, the demand for electricity is increasing, and the scale of the power system is further expanded, resulting in the continuous increase of the short-circuit current level and exceeding the interrupting capacity of the existing breaker. The flux-coupling superconducting fault current limiting switch (FC-SFCLS) is a device with fast response speed and can effectively suppress short circuit current. For the specific application scenario of a 10kV transmission system, the parameters of the current limiting switch are selected and the corresponding control strategy is proposed. Then, the preliminary electromagnetic design of the superconducting coupled inductor coils is performed. However, the introduction of current limiting breaker may affect the performance of original relay protections of power system. Thus, the influence of current limiting impedance on distance protection performance is analyzed, and the improvement measures are then put forward. Finally, a 10kV power system model integrated with the current limiting breaker is built in Matlab/Simulink. The results show that the introduction of flux-coupling fault current limiting breaker can effectively reduce the fault current level, but it will shorten the protection range of original distance protection devices. The influence can be eliminated by adopting a reasonable revision method. © 2018, Electrical Technology Press Co. Ltd. All right reserved.
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页码：5292 / 5299
页数：7
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