Since operating conditions of power systems always change, the input and output signals of wide-area damping controller (WADC), which are selected at an operating point, may not be able to guarantee the damping effect at other operating points. This paper focuses on a new adaptive signal selection for WADC against several operating conditions, such as various load demands, control signal failure, line and generator outages, and effect of communication latency. The joint controllability and observability is used to determine the best input and output pairs of WADC at any operating points. Small-signal and transient stabilities study in the IEEE 50-machine system including renewable sources, i.e., wind and solar photovoltaic generators are conducted to evaluate the effect of the proposed method. Study result demonstrates that the WADC with the adaptive signal selection yields superior damping effect to the WADC with the fixed signal selection over wide range operations.

中文翻译：

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各种运行条件下广域阻尼控制器的自适应信号选择

由于电力系统的运行条件总是在变化，因此在某个工作点选择的广域阻尼控制器（WADC）的输入和输出信号可能无法保证在其他工作点上的阻尼效果。本文着重针对多种工作条件针对WADC进行了新的自适应信号选择，例如各种负载需求，控制信号故障，线路和发电机中断以及通信等待时间的影响。联合可控性和可观察性用于确定任何工作点上WADC的最佳输入和输出对。在IEEE 50机器系统中对小信号和暂态稳定性进行了研究，包括可再生资源，即风力和太阳能光伏发电机，以评估所提出方法的效果。