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论述了电力系统自动重合闸重合时刻对电力系统稳定性的影响，建立了分析重合闸时刻对电力系统稳定性影响的数学模型，使用能量函数导出了瞬时性与永久性故障的最佳重合条件，为重合闸的时间整定和最佳重合闸的研究奠定了理论基础。
The influence of coincidence moment of power system on stability of power system is discussed. A mathematical model to analyze the influence of reclosure time on the stability of power system is established. The optimal coincidence condition between transient and permanent fault is derived by using energy function. It laid the theoretical foundation for the reclosing time setting and the optimal reclosing research.