Deals with the detailed model of DC system and presents a fast algorithm to calculate the critical fault-clearing time of AC/DC power system using high order Taylor series expansion technique to simulate the fault trajectory of AC/DC power system.

• 考虑DC系统的详细模型，在应用高阶Taylor级数展开技术模拟交直流联合系统持续故障轨线的基础上，提出了一种快速求取交直流联合系统临界切除时间的方法。