感应屏蔽型高温超导故障电流限制器模型机研究

STUDY ON INDUCTIVE HIGH-TC SUPERCONDUCTING FAULT CURRENT LIMITERS

为了研究感应型高温超导故障电流限制器的限流特性,该文建立了一个模型机,模型机由三部分组成:初级铜绕组、次级超导筒以及铁心。初级绕组的匝数N、铁心的有效磁导率meff对超导故障电流限制器的限流特性都有影响。对模型机进行了静态和动态测试,静态实验结果得出了限流器正常运行的范围,动态实验结果描述了限流器的特性。

An inductive high-TC superconducting faultcurrent limiter has been built in order to study its fault current characteristics. The limiter consists three parts: copper primary winds, Bi-2212 superconducting tubes, and iron core. The fault current characteristics are affected by the number of turns in the primary windings (N) and the core effective permeability (meff). In this paper, we present the experimental results of static impedance tests and dynamic short circuit tests. The staticimpedance tests are used to define the device operatingconditions and the dynamic short circuit tests are used tocharacterize the limiter抯 performance.[5] 何砚发等(He Yanfa et al).感应屏蔽型高温超导故障电流限制器测试系统(A Device for the measurements of current-limiting properties of high Tc superconducting fault current limiter)[J].低温与超导Cryogenics and Super Conductivity).2000,28(4):35-38. [6] Kajikawa K, Kaiho K, Tamada N. et al .Design and current-limiting simulation of magnetic-shield type superconducting fault current limiter with high Tc superconductors[C]. MT-14, Finland, June 1995. [7] Onishi T, Nii A. Current limiting performances in magnetic shield type high Tc superconducting fault current limiter[J]. Cryogenics. 1997.37(4):181-185. [8] Granados X, Obradors X, Puig T, et al.Hybrid superconducting fault current limiter based on bulk melt textured YBa2Cu3O7 ceramic composites[J]. IEEE Transactions of Applied Superconductivity.1999. 9 (2):1308-1311. [9] current limiter based on bulk melt textured YBa2Cu3O7 ceramic composites[J].IEEE Trans. on Appl. Superconductivity . 1999,(9):1308-1312. [10] Jin J.X, Grantham C, Dou S.X, et al. Electrical application of high Tc superconducting saturable magnetic core fault current limiter[J].IEEE Transactions on Applied Superconductivity. 1997.7(2):1009-1012. [11] Jin J.X, Grantham C, Liu H.K, et al.Operating principle of a HTS saturable magnetic core fault current limiter[J]. Physica C. 1997.282-287:2643-2644. [12] Verhaege T et al. ,Experiments with a high voltage (40kV) superconducing fault current limiter[J]. Cryogenics. 1996 .36:521-525 [13] Boening H.J,et.al. Fault current limiter using a superconducting coil[J].IEEE Transactions on Magnetics.1983.19(3):1051-1053. [14] Leung E.M.W,et.al. High temperature superconducting fault current limiter for utility applications[C].Proceeding of MT-14, Finland, June, 1995.