超导故障限流器在智能电网中的应用

摘要

In allusion to application of supper fault current limiter (SFCL) in smart grid, short-circuit current technology study was car-ried out in transmission line. This paper raised SFCL working principle and a mathematical model. On the basis of single microprocessor to infinity system, after SFCL put in, this paper inferred the total transfer resistance and generator’s output power expression at the time of fault taking place at different position in transmission line. Analysis was made to impact of SFCL on power system transient stability from power angle characteristic curves and the improved Euler method was used to carry out transient stability time domain simulation for SFCL con-nected in power system, which reveals the impact rule of SFCL on power system transient stability.%　　针对智能电网应用超导故障限流器(SFCL)时在输电电路中进行短路电流限制技术的研究，提出了SFCL的工作原理及数学模型，并基于单机对无穷大系统，推导出了在输电线路不同位置发生短路故障时，投入SFCL后的总转移阻抗和发电机的输出功率表达式。从功角特性曲线上分析了SFCL对电力系统暂态稳定性的影响情况，并用改进欧拉法对接入SFCL的电力系统进行了暂态稳定时域仿真研究，揭示了SFCL对系统暂态稳定性的影响规律。