Mutual inductance type current limiter for direct current side short circuit fault protection and working method

A mutual inductance type current limiter for direct current side short circuit fault protection is composed of a fault current limiting branch module, an energy absorption branch module and a follow current branch module, and a working method of the mutual inductance type current limiter comprises four stages of normal operation, fault current suppression, fault current clearing and fault recovery. Compared with a traditional series reactor, the equivalent inductance can be automatically increased in the current rising stage, and the fault current suppression capability is enhanced; equivalent inductance is automatically reduced in the current drop stage, and the fault current attenuation speed is increased; in addition, the device has a self-recovery function. 一种用于直流侧短路故障保护的互感型限流器，由故障限流支路模块、能量吸收支路模块以及续流支路模块构成，其工作方法包括正常运行、故障电流抑制、故障电流清除及故障恢复四个阶段；与传统的串联电抗器相比，本发明在电流上升阶段能够自动地增加等效电感，增强故障电流抑制能力；在电流下降阶段自动降低等效电感，提升故障电流衰减速度；此外还具备自恢复功能。