中文摘要：

随着跨区送电量的需求增加，大量功率需要进行远距离传输，因而抑制区域间的功率振荡仅靠局部反馈信号设计的控制器已难以保证整个系统的稳定运行。因此，含有时滞影响的广域控制器的分析和设计是近年来互联电网研究的热点之一。基于Hamilton系统理论，建立对应的广域测量电力系统的非线性时滞广义Hamilton模型，并以此模型为基础，给出相应的 Lyapunov-Krasovskii 泛函并推导出以矩阵不等式为形式的时滞依赖稳定性判据，注意到控制输入含有时滞信号的影响，设计出相应的广域阻尼控制器（wide-area damping controller，WADC），实现了含有时滞的广域反馈控制，并计算出能使闭环电力系统稳定的时滞裕度，权衡WADC的阻尼性能与时滞裕度之间的关系，从而给出对应的WADC控制参数。最后以16机68节点系统为例，用时域仿真的结果来说明所提时滞控制方法的有效性。

英文摘要：

Large amount of power is required for long-distance transmission with the increase of cross-transmission of electricity demand, thus it is difficult to inhibit the power oscillation between the regions to guarantee the stable operation of the whole power system which only relies on local feedback signal designed controller. Therefore, it is one of the hot spots for the analysis and design with time delay influence of wide-area controller in recent study of interconnected grid. Based on Hamilton system theory, a nonlinear time-delay generalized Hamiltonian model of corresponding wide area measurement power system model was constructed. Based on the proposed model, the corresponding Lyapunov-Krasovskii functional was given to derive a delay-dependent steady stability criterion in term of matrix inequalities. It was noticed that control input contains the influence of time-delay signal;the corresponding wide-area damping controller （WADC） was designed. The WAN feedback control with time-delay was realized;Time delay margin delay can be calculated which makes closed loop power system is stable. The relationship between the damping performance of WADC and the time delay margin was investigated. Thus corresponding control parameters of WADC were given. Finally, taking a 16-machine 68-bus power system as an example, the results of simulation in time-domain show that performance of the proposed controller is effective.