The finite-different time-domain(FDTD) method has been widely used to simulate the transient solutions of electromagnetic wave propagation.

时域有限差分（FDTD）算法被广泛地用于模拟电磁场的传播。

Based on practical experience, the paper summarizes such problems as transient dynamic analysis, mode analysis and spectrum analysis and their solutions to be used by ANSYS engineers for reference.

结合使用经验，总结了基于通用有限元软件ANSYS进行瞬态动力分析、模态分析、谱分析等动力分析的有关问题及解决方法，可供使用ANSYS的工程技术人员参考。

This paper proposes a new method for solutions of optimal power flow with transient stability constraints (OTS).

提出了求解暂态稳定性约束下最优潮流(ots)的新方法。