摘要
超导故障限流器具有通态损耗低、响应速度快等优点,是一种应用场景广阔的超导电力设备,但二代高温超导带材失超电阻的有效计算较困难,难以同时满足计算精度和速度的要求。本文对YBCO高温超导带材进行交流和直流过电流冲击实验,测量了短路故障电流作用下带材的失超电阻特性。结果表明,带材失超电阻与积累能量具有一一对应关系,且该对应关系在交流和直流工况下一致。以此为理论基础,搭建了基于电阻-能量关系的电阻型超导限流器失超电阻计算模型,提出了交直流等效失超电阻分析方法,可用交流冲击实验等效替代直流实验,降低实验与仿真建模的难度。
The superconducting fault current limiter has the advantages of low on-state loss and fast response speed and a wide application scenario in the future power system.However,the effective calculation of the quenching resistance of the superconducting tape is absent,and it is difficult to meet the requirements of both accuracy and speed.In this paper,the AC and DC overcurrent experiments of YBCO tapes were carried out,and the quenching resistance characteristics was measured.The experimental results show that there is a fixed correspondence between the quenching resistance and the accumulated energy,and the corresponding relationship is consistent under AC and DC conditions.Based on this theory,this paper established a calculation model of the quenching resistance based on the energy-resistance relationship.An analytical method of AC-DC equivalent quenching resistance was proposed,which provided the theoretical basis for using AC overcurrent test to replace DC test.The equivalent substitution can greatly reduce the difficulty of experiment and simulation.
作者
谭翔宇
梁思源
唐跃进
任丽
肖磊石
Tan Xiangyu;Liang Siyuan;Tang Yuejin;Ren Li;Xiao Leishi(R&D Center of Applied Superconductivity,State Key Lab.of AEET,Huazhong University of Science and Technology,Wuhan 430074,China;Electric Power Research Institute of Guangdong Power Grid Corporation,Guangzhou 510080,China)
出处
《低温与超导》
CAS
北大核心
2019年第10期55-61,共7页
Cryogenics and Superconductivity
基金
广东电网科技项目(GDKJXM20180563)
关键词
二代高温超导带材
电阻型超导限流器
失超电阻
过电流冲击
2G high temperature superconducting tape
Resistive superconducting fault current limiter(RSFCL)
Quenching resistance
Overcurrent impact
作者简介
谭翔宇(1995-),男,硕士研究生,研究方向:超导限流器在柔直系统中的应用。
