Li Wenrong, Sheng Jie, Qiu Derong, Cheng Junbo, Ye Haosheng, Hong Zhiyong
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Russian Representative Office of State Grid Corporation of China, Moscow 109807, Russian.
Materials (Basel). 2019 Aug 31;12(17):2805. doi: 10.3390/ma12172805.
As the capacity of the power grid continues to expand, high-level fault currents might be caused during a contingency, and the problem of short-circuit current over-limitation is imminent. The high-temperature superconducting (HTS) fault current limiter (FCL) is an effective method to solve this problem. In this paper, a transient numerical model for the process of limiting current in the inductive FCL is proposed. The model is based on the coupling of multiphysics finite element simulation and a circuit model. The voltage source is used as input, which can simulate the macroscopic characteristics in the process of limiting current, such as the voltage and current waveforms, and can also simulate microscopic characteristics, such as temperature, magnetic field, and electrodynamic force distribution. The short-circuit experimental data of an air core inductive superconducting fault current limiter (SFCL) prototype was compared with the simulation results to verify the reliability of the simulation.
随着电网容量不断扩大，在故障情况下可能会产生高水平故障电流，短路电流超限问题迫在眉睫。高温超导（HTS）故障限流器（FCL）是解决该问题的有效方法。本文提出了一种用于感应式FCL限流过程的瞬态数值模型。该模型基于多物理场有限元模拟与电路模型的耦合。以电压源作为输入，既能模拟限流过程中的宏观特性，如电压和电流波形，又能模拟微观特性，如温度、磁场和电动力分布。将空心感应超导故障限流器（SFCL）原型的短路实验数据与模拟结果进行比较，以验证模拟的可靠性。
