广域阻尼控制为提高互联系统区间振荡模式的阻尼特性提供了新途径。为研究广域阻尼控制反馈信号和控制器安装点的优化选择，应用特征根分析法和传统控制理论，以 IEEE 10 机39 母线系统为例，分析了多机系统振荡功率在网络中的分布特征。由于良好信号能量和信噪比，区间振荡模式的联络断面振荡功率可为广域阻尼控制器优选反馈信号；阻尼控制器安装点的优化能够利用发电机至联络断面之间的传递函数模型，通过机电模式的留数和留数比确定。进而针对互联系统，给出了的结合特征根分析法和系统辨识技术的反馈信号选择与广域阻尼控制器布点的一般流程，改善了大系统的计算复杂性。

Wide-area damping control system provides a new chance for improving the damping character of inter-area mode in interconnected power network. In order to optimally select feedback signal, the distribution feature of active oscillation power is calculated based on eigenvalues analysis and traditional control theory in IEEE 10 generator 39 bus system. Inter-tie line active oscillation power can be an optimal feedback signal in wide-area damping control because of its excellent signal power and signal noise ratio. Damping controller location can be selected by calculating residue and residue ratio from the transfer function between generator and inter-tie line active power. A general process is deduced base on eigenvalues analysis and system identification technology in optimal selection of feedback signal and controller location in wide-area damping control system. As a result, the calculation complexity can be reduced by it in bulk power network. signal power and signal noise ratio. Damping controller location can be selected by calculating residue and residue ratio from the transfer function between generator and inter-tie line active power. A general process is deduced base on eigenvalues analysis and system identification technology in optimal selection of feedback signal and controller location in wide-area damping control system. As a result, the calculation complexity can be reduced by it in bulk power network