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

目的研究和验证基于同步相量测量的大规模电力系统广域阻尼控制的高针对性问题。2003年东北大停电后，人们在同步相量的可视化和事后分析方面投入了大量的研究工作，使人们对这项技术如何用于复杂电力系统网络的动态健康监测有了初步的理解。然而，从监测过渡到下一个阶段--即反馈控制--还没有进行严格的研究。该项目将朝着使用一种新颖的逆变器建立这样的控制系统迈出一步。该框架允许将为降阶电力系统开发的基于同步相量的阻尼控制设计转化为实际高阶电力系统中的本地励磁控制器。本研究将以电路论和网络优化的基本思想为基础，结合图论和非线性控制的累积思想。智力价值本研究的智力价值将是通过与控制理论和网络科学的结合建立同步相量技术的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获得巨大的好处，从相量数据中提取信息，以控制其系统在大扰动后的动态稳定裕度。广泛影响该项目的更广泛影响将是提供急需的、及时的控制理论思想注入，以推进新兴的相量集成下一代智能电网的研究。研究成果将通过期刊出版物、教育实地考察、会议教程和研讨会进行传播，研讨会邀请研究三角园区的演讲者参加。将通过FREEDM系统中心积极促进少数民族工科学生的本科研究。

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.