电站并联运行的不对称非线性振荡

ASYMMETRICAL NONLINEAR OSCILLATIONS OF GENERATOR SETS OPERATING IN PARALLEL

本文给出一个结构不完全对称并联电网的等价定理,它把双输入双输出非线性耦合的微分方程组等价为单输入单输出的非线性微分方程,然后用渐近方法和谐波线性化方法求其一次近似解,得到一些新的物理性质,有助于合理选择电网结构,以提高其结构稳定性.

We present an equivalent theorem with which two nonlinear coupled differential equations with double-input and double-output for the parallel generator sets with uncomplete symmetrical construction are made equivalent to that with single-input and single-output. Then, the asymmetrical nonlinear oscillations are analyzed by the asymmetric method and the harmonic linearized method. Some new hysica properties that are helpful to the selection of power construction for improving the stability are obtained.