基于本地可测量参数的UPFC暂态能量控制

TRANSIENT ENERGY CONTROL OF UPFC USING LOCAL MEASURABLE QUANTITIES

分析了UPFC的动态运行机理,推导出计及UPFC直流电容器动态特性的UPFC动态数学模型,并在此基础上利用UPFC装置的本地可测量状态参数UPFC安装处的系统电压和功率,估算出UPFC暂态能量最小控制的输入信号(转子角度差),从而实现了控制的输入参数本地化。仿真计算结果表明,这种基于本地可测量参数的UPFC暂态能量最小控制方法对抑制系统区域间振荡是有效的。

Based on theoretical analysis of the dynamic operation mechanism of UPFC, the detailed dynamicmathematical model of UPFC including the dynamiccharacteristics of DC capacitor is presented. On this basis,using the local measurable state parameters, i.e., the voltage magnitude and active and reactive power at the positionwhere the UPFC is installed, the input signal of transientenergy function minimization control, i.e., rotors phase angle difference, is estimated, therefore, the localization of input parameters for control is implemented. The simulation results show that the transient energy minimization control method for UPFC based on local measurable parameters is effective fordamping power system interarea oscillation.