自动电压控制保持器对发电机组稳定性影响分析

Effect of Automatic Voltage Control Retainer on Stability of Generator Units

为研究自动电压控制对发电机组稳定性影响,提出了一种含自动电压控制保持器的阻尼转矩计算方法。对自动电压控制系统离散环节进行建模,得出对应的海佛容-飞利蒲斯模型,推导出含自动电压控制保持器的阻尼转矩表达式,实现发电机组稳定性的量化评估。仿真结果表明,与传统算法相比,可以量化分析自动电压控制保持器对发电机组稳定的附加影响,并验证了本方法的有效性。

In order to study the effect of automatic voltage control retainer on stability of generator units,a calculation method of the damping torque considering the automatic voltage control retainer is proposed.The discrete links of the automatic voltage control system is modeled,and the corresponding Heffron-Philips model is obtained.The damping torque expression including the automatic voltage control retainer is then derived,which realizes the quantitative evaluation of the stability of generator units.Simulation results prove that the proposed method can quantitatively analyze the additional effect of the automatic voltage control retainer on the stability of generator units,and the effectiveness of the method is verified.