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Design and implementation of a measurement-based adaptive wide-area damping controller considering time delays

机译：考虑时滞的基于测量的自适应广域阻尼控制器的设计与实现

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摘要

Wide-area measurement systems enable the wide-area damping controller (WADC) to use remote signals to enhance the small signal stability of large scale interconnected power systems. System operating condition variations and signal transmission time delays are the major factors to worsen the damping effect and even deteriorate the system stability. This paper proposes a novel measurement-based adaptive wide-area damping control scheme using oscillation mode prediction and system identification techniques. These techniques adjust the parameters of WADC as well as the time delay compensation in an online environment. To achieve fast online implementation, an identified high order multi-input multi-output (MIMO) model is deformed into a low order single-input single-output (SISO) model according to the residue of MIMO model. The SISO model can accurately represent the power system dynamics in the form of a transfer function, capturing the dominant oscillatory behaviors in the frequency range of interest. Moreover, the WADC has been implemented on a hardware test-bed (HTB) by adding its output signal to the excitation system of a selected generator. The effectiveness of the proposed measurement-based adaptive WADC has been demonstrated in a two-area four-machine system on the HTB under various disturbance scenarios. (C) 2015 Elsevier B.V. All rights reserved.
机译：广域测量系统使广域阻尼控制器（WADC）能够使用远程信号来增强大型互连电源系统的小信号稳定性。系统工作条件的变化和信号传输时间的延迟是使阻尼效果恶化甚至使系统稳定性下降的主要因素。本文提出了一种新颖的基于振荡模式预测和系统识别技术的基于测量的自适应广域阻尼控制方案。这些技术可调整WADC的参数以及在线环境中的延时补偿。为了实现快速的在线实现，根据MIMO模型的残差，将识别出的高阶多输入多输出（MIMO）模型变形为低阶单输入单输出（SISO）模型。 SISO模型可以以传递函数的形式准确表示电力系统动态，从而捕获感兴趣的频率范围内的主要振荡行为。此外，通过将WADC的输出信号添加到选定发电机的励磁系统上，已在硬件测试台（HTB）上实现了WADC。在各种干扰情况下，在HTB上的两区域四机系统中，已经证明了所提出的基于测量的自适应WADC的有效性。 （C）2015 Elsevier B.V.保留所有权利。

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