对单机无穷大母线系统进行了公式推导和仿真验证，从理论上探讨了多机系统的三相短路故障临界切除时间求解方法。

The formulae for SMIS are derived and verified by case simulation, the solution of critical clearing time (CCT) of three-phase short fault in MMS is theoretically discussed.

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针对实际系统暂态稳定评估中遇到的“孤立稳定域”现象，用经典单机无穷大母线(OMIB)系统进行了详细的稳定分析。

The phenomena of isolated stability domain (ISD) found in transient stability assessment of a real power system are analyzed with the classical one-machine infinite-bus (OMIB) system.

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