A system model with the opportunistic maintenance is built by using the theory of renewal process and the calculation methods of system transient and steady state availability is also presented.

利用更新过程理论建立了机会维修策略下的系统模型，并给出了系统瞬态和稳态可用度的求解方法。

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The effect of wicket opening time for water turbine on the transient process of hydropower station was studied by theoretical analysis and numerical calculation.

针对国内外规范对导叶开启时间的不同规定，结合理论推导和数值计算实例，分析了不同的导叶开启时间对水电站过渡过程的影响。

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Process transient stability simulation calculation based on power flow which USES the different accuracy of synchronous generator mathematical model in power system comprehensive program.

采用电力系统综合程序不同精度的同步电机数学模型，基于潮流进行暂态稳定仿真计算。

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