交流饱和铁芯型故障限流器的现状与发展

对交流饱和铁芯型故障限流器(SCFCL)的研究现状和发展历程进行了综述。首先介绍了直流偏置型、永磁体偏置型、超导型和混合偏置型这4类SCFCL的工作原理、拓扑结构、等效电路和应用实例,比较并分析了4类SCFCL的功能特点和技术优缺点。其次,针对4类SCFCL存在的直流损耗较大、永磁体励磁能力不足、高温超导系统运行维护成本高、所需软磁材料较多和经济性较差等问题,介绍了SCFCL在拓扑结构、参数设计、励磁损耗以及安全稳定性等方面的最新研究成果,并讨论了关于SCFCL的新技术与新方法。最后明确了磁性材料与超导材料的优化问题和SCFCL的经济性与利用效率问题是SCFCL发展的核心问题,进而在拓扑优化、材料优化和多功能化等方面对SCFCL未来发展方向进行了展望。

Present situation and development of AC SCFCL

The research situation and development of SCFCL(Saturated Core Fault Current Limiter) are reviewed. Firstly, the working principle, topology structure, equivalent circuit and application examples of DC biased-,permanent magnet biased-,superconducting and hybrid biased-SCFCL are introduced. The functional characteristics and technical advantages and disadvantages of four kinds of SCFCL are compared and analyzed. Secondly, in view of the problems of four kinds of SCFCL, such as large DC loss, insufficient excitation capacity of permanent magnet, high cost of operation and maintenance for high temperature superconducting system, more softed magnetic materials needed and poor economy, the latest research results of SCFCL in topology structure, parameter design, excitation loss, safety and stability are introduced, and the new technologies and methods of SCFCL are discussed. Finally, it is clear that the optimization of magnetic materials and superconducting materials, and the economy and utilization efficiency of SCFCL are the core issues in the development of SCFCL. Furthermore, the future development direction of SCFCL is prospected in aspects of topology optimization, material optimization and multi-function.