Robust Frequency Domain Design of Flexible AC Transmission System Devices for Power System Damping Control

本研究的目的是探讨柔性交流传输系统（FACTS）设备控制设计的新技术，以减轻多种区域间振荡模式。研究的重点是阻尼控制器的设计，阻尼控制器对负载条件和系统配置的变化具有鲁棒性。通过将工况的变化建模为不确定性，将鲁棒阻尼控制器的设计表述为和H00鲁棒稳定性问题。将采用基于同步力矩和阻尼力矩的多模态分解，为建立非保守不确定性模型提供合适的设计结构。该提案包括以下研究领域：(1)多模态分解的发展，(2)FACTS装置的选址和反馈信号的选择，(3)不确定性模型的发展，(4)大型电力系统中多模态分解的计算，(5)单个FACTS装置的鲁棒控制设计，(6)多FACTS设备的鲁棒分散控制协调。预计将开发一种基于同步和阻尼力矩的严格鲁棒控制设计方法，用于多种摆振模式。该技术将直接吸引电力系统控制设计工程师。电力系统模型将使用提案人开发的电力系统工具箱建立。控制设计过程将使用Matlab进行研究。设计范例将向公用事业和设备制造商征求。

The objective of this research is to investigate new techniques for the control design of flexible AC transmission system (FACTS) devices for the mitigation of multiple interarea modes of oscillations. The focal point of the investigation is the design of damping controllers which are robust with respect to variations in loading conditions and system configurations. By modeling the changes in operating conditions as uncertainties, the robust damping controller design will be formulated as and H00 robust stability problem. A multi-modal decomposition based on synchronizing and damping torques will be used to provide an appropriate design structure to establish non-conservative uncertainty models. The proposal consists of the following research areas: (l) development of the multi-modal decomposition, (2) FACTS device siting and feedback signal selection, (3) development of uncertainty models, (4) computation of multi-modal decomposition in large power systems, (5) robust control design of a single FACTS device, and (6) robust decentralized control coordination of multiple FACTS devices. It is anticipated that a rigorous robust control design methodology based on synchronizing and damping torques for multiple swing modes will developed. The technique will appeal directly to power system control design engineers. The power system models will set up using the Power System Toolbox developed by the proposer. The control design process will be investigated using Matlab. Design examples will be solicited from utilities and equipment manufacturers.