GOALI: ASCENT: Online Stability Assessment, Flexibility, and Enhancement of IBR-dominated Power Systems

该NSF项目旨在开发一个全面的理论框架，用于对具有不同水平的逆变器资源和同步发电机的未来电力系统的故障后稳定性进行建模、设计、传感和控制。该项目将使用一种创新的基于能量函数的方法来研究系统稳定性如何响应配置、故障前条件和故障。这项工作有望改变我们评估和提高电力系统稳定性的方式，推进这一关键领域的科学知识。该项目的智能优点包括：(1)使用基于能量函数的直接方法进行稳定性评估，大大减少了对详细的时域仿真的需要；(2)将逆变器的快动态和发电机的慢动态视为一个双时间尺度系统，从而简化了稳定性分析的复杂性；(3)采用有界控制理论，缩小了仿真结果与实际硬件性能之间的差距，增强了结果的实用性。项目成果可能会在多个领域产生更广泛的影响，包括机器人、生态系统建模和优化。创建在线稳定性评估工具将使公用事业工程师受益，而逆变器设计指南将为电力电子界的工作提供信息并产生影响。此外，该项目将通过在四个参与机构的各种活动吸引不同的个人参与，加强其教育和社会效益。该项目的技术目标包括建立双时间尺度系统的能量函数的理论基础，探索电力系统稳定性和逆变器控制器动态之间的联系，以及最小化电力系统模型和逆变器硬件之间的差异。这将通过应用直接方法来确定稳定区域、进行理论研究并验证跨软件模拟、硬件在环模拟和物理108转换器网络的结果来实现。作为一个学术与工业联系机会(GOALI)项目，该团队将与一个公用事业合作伙伴合作建立一个现实的传输系统模型。该项目将在5000母线系统上严格验证建议的在线暂态稳定评估方法，涵盖从0到100%的广泛IBR渗透率。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This NSF project aims to develop a comprehensive theoretical framework for modeling, designing, sensing, and controlling the post-fault stability of future power systems with varying levels of inverter-based resources and synchronous generators. The project will use an innovative energy-function-based approach to study how system stability responds to configurations, pre-fault conditions, and faults. This work promises to transform how we assess and enhance the stability of power systems, advancing scientific knowledge in this critical field. The intellectual merits of the project include (1) using energy-function-based and direct methods for stability assessment, which significantly reduce the need for detailed time-domain simulations; (2) considering inverters' fast dynamics and generators' slow dynamics as a two-time-scale system, thereby simplifying the complexity of stability analysis; and (3) implementing bounded control theory to narrow the gap between simulation results and actual hardware performance, enhancing the practical applicability of the findings. The project outcomes will likely have a broader impact in diverse fields, including robotics, ecosystem modeling, and optimization. Creating an online stability assessment tool will benefit utility engineers, while an inverter design guide will inform and influence the work of the power electronics community. Additionally, the project will engage diverse individuals through various activities at the four participating institutions, reinforcing its educational and societal benefits.The technical goals of this project involve establishing the theoretical foundations of energy functions for two-time-scale systems, exploring the connection between power system stability and inverter controller dynamics, and minimizing discrepancies between power system models and inverter hardware. This will be accomplished by applying direct methods to identify stability regions, conducting theoretical investigations, and validating findings across software simulations, hardware-in-the-loop simulations, and a physical 108-converter network. As a Grant Opportunities for Academic Liaison with Industry (GOALI) project, the team will collaborate with a utility partner on a realistic transmission system model. The project will rigorously validate the proposed online transient stability assessment method on a 5000-bus system, encompassing a broad spectrum of IBR penetrations from 0 to 100%.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.