Collaborative Research: Computational Methods for Stability Assessment of Power Systems with High Penetration of Clean Renewal Energy

提案编号：1508666 PI姓名：Turitsyn，Konstantin PI机构：马萨诸塞州理工学院提案编号：1509036 PI姓名：Mehta，Dhagash PI机构：圣母大学提案编号：1509137 PI姓名：Chakrabortty，Aranya PI机构：北卡罗来纳州州立大学随着可再生能源的日益普及，电网目前正在经历建筑革命和分布式能源以及数百万个活动端点的存在。这些新部件的引入影响系统的稳定性，即其在扰动之后返回正常操作条件的能力。缺乏稳定性可能会损害可靠的电力供应，并在最严重的情况下导致连锁停电。该项目的主要智力价值将通过为未来可再生能源渗透率高的电网稳定性评估问题建立理论基础来证明。来自美国3所机构的跨学科研究团队将带来来自电力系统动力学和控制、数值代数几何和非线性系统等多个领域的前沿创新，以开发计算工具来分析高度非线性动态行为，并证明下一代电网中操作点的稳定性/可行性。从更广泛的影响角度来看，该项目解决了现代社会的一些最困难和最重要的挑战。向公共和私营公司转让成果的技术将为社会提供直接利益，为更好的经济决策提供新的开源工具，保护国家安全并为公共政策提供信息。其他更广泛的影响包括但不限于：1）提高应用数学和控制界对稳定性相关问题的认识，2）在圣母大学组织应用数学和电气工程系之间的联合研讨会，3）在即将举行的会议中组织关于电力系统建模和控制的特别会议和研讨会，即2016年在波士顿举行的美国控制会议4）代表性不足的群体参与研究和教育活动，并为感兴趣的学生开发定制的夏季研究项目。5)开发关于智能电网高级主题的新研究生水平专业课程。在高压力运行条件下，非线性相互作用在电力系统动态及其对扰动的响应中起着关键作用。可再生能源发电的引入将影响运行点的结构及其稳定性。传统的稳定性分析技术中的隐含的假设，为传统的分层性质的电网结构可能会被违反，该技术可能不适用于未来的电网。该项目的目标是开发新一代计算上易于处理但工程上明智的准确方法，以帮助运营商评估可再生能源集成电力系统中运行点的稳定性。更具体地说，该项目将开发用于构建基于李雅普诺夫函数的大规模电力系统稳定性证书的新技术，以及以多项式形式表示复杂的开关型非线性的新方法。新一代高效、鲁棒的同伦算法将被开发并应用于电力系统的实际问题。PI Chakrabortty及其团队将负责开发和验证可再生能源发电系统的易处理但同时准确的动态模型。Turitsyn和Vu小组将研究和探索构建电力系统大规模动态模型稳定性证书的新方法，并将分析操作点对可再生发电机发电水平和其他不确定参数的非线性灵敏度。PI Mehta将领导最近开发的数值多项式同伦延拓算法的进步，该算法将用于分析前两个推力中开发的非线性系统的运行条件。

Proposal Number: 1508666 PI Name: Turitsyn, Konstantin PI Institution: Massachusetts Institute of Technology Proposal Number: 1509036 PI Name: Mehta, Dhagash PI Institution: University of Notre Dame Proposal Number: 1509137 PI Name: Chakrabortty, Aranya PI Institution: North Carolina State University The electrical power grid is currently undergoing the architectural revolution with the increasing penetration of renewable and distributed energy sources and the presence of millions of active endpoints. Introduction of these novel components affects the stability of the system, i.e. its ability to return to normal operating conditions after disturbances. Lack of stability may compromise the reliable power supply and result in cascading blackouts in the most dramatic scenarios. The key intellectual merit of the project will be demonstrated through the development of a theoretical foundation for the problem of stability assessment of future power grids with high levels of renewable energy penetration. Interdisciplinary team of researchers from 3 US institutions will bring in cutting edge innovations from a number of fields like power systems dynamics and control, numerical algebraic geometry, and nonlinear systems in order to develop the computational tools to analyze the highly nonlinear dynamic behaviors and to certify stability/feasibility of operating points in the next generation power grids. From broader impact perspective the project addresses some of the most difficult and important challenges of modern society. The technology transfer of the results to public and private companies will provide direct benefit to the society by providing new open source tools for better economic decision making, protection of national security and informing of public policy. Other broader impacts include but are not limited to: 1) raising awareness of the stability related problems among applied mathematics and controls community, 2) Organization of a joint seminar between the applied mathematics and electrical engineering departments at University of Notre Dame, 3) Organization of special sessions and workshops on power system modeling and control in upcoming conferences, namely American Control Conference 2016 in Boston 4) engagement of underrepresented groups in research and education activities and development of custom tailored summer research projects for interested students. 5) Development of new graduate level specialized classes on advanced topics in smart grids.In heavily stressed operating conditions, the nonlinear interactions play a critical role in power system dynamics and its response to disturbances. Introduction of renewable generation will affect both the structure of operating points and their stability properties. Implicit assumptions in traditional stability analysis techniques developed for conventional hierarchical nature of power grid structure may be violated and the techniques may not be applicable to future power grids. The goal of this project is to develop a new generation of computationally tractable but engineering wise accurate approaches to help the operators to assess the stability of operating points in renewable-integrated power systems. More specifically, the project will develop new techniques for constructing Lyapunov functions-based stability certificates for large-scale power systems, and novel ways of representing the complicated switch-type nonlinearities in polynomial form. New generation of efficient and robust homotopy algorithms will be developed and applied to practical problems in power systems. PI Chakrabortty and his group will be responsible for the development and validation of tractable but at the same time accurate dynamic models of power systems with renewable generations. The group of Turitsyn and Vu will be studying and exploring new approaches to construction of stability certificates for large scale dynamic model of power systems, and will be analyzing the nonlinear sensitivities of operating point with respect to generation levels of renewable generators and other uncertain parameters. PI Mehta will be leading the effort on the advancement of recently developed Numerical Polynomial Homotopy Continuation algorithms that will be used for the analysis of operating conditions of nonlinear systems developed in the first two thrusts.