RUI: A Coherency-based Simple Dynamic Equivalent for On-line Transient Stability Assessment

提出了一种包含一组相干发电机的电力系统外部区域的简单动态等效方法，用于在线暂态稳定评估。提出了一种基于生成器分解和聚合的方法。分解生成器的想法是一个全新的想法。生成的等效程序很简单，可以满足在线应用程序的要求。在只知道外部区域的无源网络模型和该区域内发电机的总惯性的情况下，该等效网络的参数可由仅在边界母线处采集的一组测量数据确定。该方法不需要原始发电机的任何测量数据。这一重要特性使所提出的等效物具有吸引力，适合于在线应用。在这个项目中，将进行彻底的调查，以评估所提议的等效性能。此外，所提出的方法将与形成动态等效的最先进的方法之一进行比较。将通过会议发言和出版物传播成果。本研究将为电力系统的安全运行提供一个强有力的工具。这项拟议的研究涉及南卡罗来纳州立大学电子工程技术（EET）项目单元的一名教员和两名本科生。除了这些学生之外，EET的其他学生（高年级）将以不同的方式参与到这个项目中来，将研究和教育结合起来。这个项目将使PI有一个适当的基础设施来进行研究。

A simple dynamic equivalent for a power system external area containing a group of coherent generators is proposed for on-line transient stability assessment. The proposed method is based on decomposition and aggregation of generators. The idea of decomposing generators is a completely new idea. The resulting equivalent is simple as required for on-line application. With the knowledge of only the passive network model of the external area and the total inertia of the generators in this area, the parameters of this equivalent are determinable from a set of measurement data taken solely at the boundary buses. The method does not require any measurement data at the original generators. This important feature makes the proposed equivalent attractive and suitable for on-line applications. In this project, a thorough investigation will be made to evaluate the performance of the proposed equivalent. Further, the proposed method will be compared with one of the state-of-the art methods of forming dynamic equivalents. Dissemination of results will be through conference presentations and publications. This research will provide a powerful tool that can play a very important role in the secured operation of power systems. The proposed research involves one faculty member and two undergraduate students from the Electrical Engineering Technology (EET) Program Unit of South Carolina State University. Besides these students, other EET students (senior) will be involved in this project in different ways to integrate research and education. This project will allow PI to have an infrastructure in place to conduct research.