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Simplified Design of R-SFCL With Shunt Reactor for Protecting HTS Cable in Distribution Network
IEEE Transactions on Applied Superconductivity ( IF 1.8 ) Pub Date : 2021-06-21 , DOI: 10.1109/tasc.2021.3091075
Hongyi Huang , Yuejin Tang , Li Ren , Jing Shi , Jingdong Li , Ying Xu , Zhe Zhang , Zhe Wang

The high temperature superconducting (HTS) cable can be used as a low-voltage tie line between substations for its characteristic of high currentdensity. In this way, the remaining capacity on the low-voltage side of the transformer can be fully utilized. Moreover, The HTS cable can run in parallel with the original tie line, forming an electromagnetic ring network, to ensure the power supply of important loads. However, the short circuit current of the distribution network is large, and the electromagnetic ring network operation results in the quench of HTS cable when the short circuit fault is outside the HTS cable. It is important to ensure the safety of HTS cable under various short circuit faults. To ensure the safe operation of HTS cable in Shenzhen Power Grid, this paper built a distribution network model with HTS cable in Matlab/Simulink. The fault current and thermal process in different fault situation were analyzed. The design of fault current limiter (FCL) which is composed of the resistive superconducting fault current limiter (R-SFCL) and a shunt reactor was completed. The model of R-SFCL using R - Q method is build, and the effectiveness of the R-SFCL design is verified.

中文翻译:

配电网高温超导电缆保护用并联电抗器R-SFCL的简化设计

高温超导(HTS)电缆具有高电流密度特性,可用作变电站之间的低压联络线。这样就可以充分利用变压器低压侧的剩余容量。此外,高温超导电缆可以与原有的联络线并行运行,形成一个电磁环网,保证重要负载的供电。但配网短路电流较大,当短路故障在高温超导电缆外时,电磁环网运行导致高温超导电缆失超。确保高温超导电缆在各种短路故障下的安全很重要。为保证深圳电网高温超导电缆的安全运行,本文在Matlab/Simulink中建立了高温超导电缆的配电网模型。分析了不同故障情况下的故障电流和热过程。完成了由电阻式超导故障限流器(R-SFCL)和并联电抗器组成的故障限流器(FCL)的设计。R-SFCL的模型使用R - 建立Q方法,验证了R-SFCL设计的有效性。
更新日期:2021-07-27
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