饱和铁心型超导限流器的暂态特性分析

随着电网规模的不断扩大，短路电流超标问题已成为制约电网负荷增长和电网发展的突出因素之一。传统的限流措施已经很难满足现代电力系统发展的需要，随着超导材料的快速发展，超导限流器这种利用新兴超导技术而研制出的快速有效的限流装置应运而生。由于饱和铁心型超导限流器拥有突出的优越性能，其被广泛应用于输电线路及配电系统中。考虑到饱和铁心型超导限流器的实际结构，提出了一种新式等效磁路法，进而可以精确、有效地分析限流器的暂态特性。等效磁路法的提出对饱和铁心型超导限流器的理论分析及实际应用都有重要的意义。

Electromagnetic Transient Analysis of Saturated Iron-Core Superconducting Fault Current Limiter

With the continuous expansion of power grids, the limit-exceeding problems of short-circuit current has become one of the prominent factors restricting the growth and development of power grid load. The traditional limiting measures have been difficult to meet the development of modern power system. Along with the rapid development of superconducting material, the fast and effective current limiting devices-superconducting fault current limiter has emerged as the times require. Due to the outstanding performance, the saturated iron-core superconducting fault current limiter (SICSFCL) has been applied in transmission lines and distribution systems. Considering the actual structure of SICSFCL, a new equivalent magnetic circuit method was proposed, which could accurately and effectively analyze the transient characteristics of the current limiter. The equivalent magnetic circuit method is important for the theoretical analysis on SICSFCL and its actual application.