发电机非线性恒无功励磁控制研究

Nonlinear constant reactive power excitation control

恒无功和恒功率因数控制方式研究对小型发电机组有着重要的意义。推导了使用非线性零动态方法实现的发电机恒无功励磁控制规律,并对采用这种控制规律后,系统的稳定性做了详尽的分析。最后,对单机无穷大系统在该控制规律下的效果进行了仿真计算,结果表明在稳定无功方面比常规反馈励磁控制的效果好。

Constant reactive power and constant power factor control is an important research field for small generator unit. The constant reactive power excitation control strategy is deducted using nonlinear zero dynamic method and the system stability under this control strategy is verified. Si-mulations on a single-machine infinite-bus system show that the nonlinear excitation control approach has obvious advantages over the conventional feedback control approach.