In this thesis, the characteristics of the critical voltage collapse operation point is analyzed and a novel method used to get the critical point of voltage collapse is put forward.

本文对临界电压崩溃的运行点进行了特性分析，提出了一种求取电压崩溃临界点的新算法。

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Then using the approximate solution as initial value of iteration, the nonlinear equations for the closest point of collapse are solved directly by Newton-Raphson method.

然后采用牛顿-拉夫逊法直接对最近电压崩溃临界点模型所构成的非线性方程组进行迭代求解。

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Continuation power flow method, the strong tool of voltage stability analysis, can overcome the problem of singularity of Jacobin matrix when running close to collapse point.

连续潮流算法是电压稳定分析的有力工具，能够克服接近稳定极限运行状态时的潮流不收敛的问题。

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