CAREER: Wide-Area Control of Large Power Systems Using Distributed Synchrophasors: Where Network Theory Meets Power System Dynamics

目的：本提案力求采用新颖和变革性的方法来研究和验证使用同步相量测量的大型电力系统广域阻尼控制的高度相关问题。在2003年东北大停电之后，大量的研究工作已经投入到同步相量的可视化和事后分析中，从而形成了如何将这项技术用于复杂电力系统网络的动态健康监测的形成性理解。然而，目前还没有严谨的研究来从监测过渡到下一阶段——即反馈控制。这个项目将朝着使用一种新颖的“反转”技术构建这样的控制系统迈出一步。框架允许基于同步相量的阻尼控制设计，为低阶电力系统开发，在实际的高阶电力系统中被反向到本地励磁控制器。电路理论和网络优化的基本思想将作为这一发展的基础思想，并结合图论和非线性控制的累积思想。本研究的智力价值在于将同步相量技术与控制理论和网络科学相结合，开创了一个全新的应用领域。电力系统保护工程师将从这项工作中受益匪浅，从相量数据中提取信息，以控制系统在大扰动后的动态稳定裕度。更广泛的影响该项目的更广泛的影响将是提供急需的、及时的控制理论思想，以推进相量集成的下一代智能电网的新兴研究。研究成果将通过期刊出版物、教育实地考察、会议教程和由研究三角公园邀请的演讲者举办的讲习班来传播。FREEDM系统中心将积极促进少数族裔工程专业学生的本科研究。

ObjectiveThis proposal strives for novel and transformative approaches to investigate and validate the highly pertinent problem of wide-area damping control of large-scale electric power systems using synchronized phasor measurements. Following the Northeast blackout of 2003, tremendous research efforts have been devoted to the visualization and postmortem analyses of Synchrophasors, leading to a formative understanding of how this technology may be used for dynamic health monitoring of complex power system networks. However, no rigorous research has yet been done to transition from monitoring to the next phase - namely, feedback control. This project will make a step towards building such control systems using a novel ?inversion? framework that allows Synchrophasor-based damping control designs, developed for reduced-order power systems, to be inverted to local excitation controllers in actual higher-order power systems. Fundamental ideas of circuit theory and network optimization will be used as the foundational thoughts for this development, combined with cumulative thoughts from graph theory and nonlinear control.Intellectual MeritThe intellectual merit of this research will be in establishing an altogether new application area of the Synchrophasor technology through its integration with control theory and network science. Power system protection engineers will benefit tremendously from this work in extracting information from phasor data to control the dynamic stability margins of their systems following large disturbances.Broader Impacts The broader impact of this project will be in providing a much-needed, timely infusion of control theoretic ideas to advance emerging research on phasor-integrated next-generation smart power grids. Research results will be broadcast through journal publications, educational field trips, conference tutorials and workshops with invited speakers from the Research Triangle Park. Undergraduate research for minority engineering students will be actively promoted via the FREEDM Systems Center.