Robust Control of Large Scale Power Systems

近年来，随着竞争市场和放松管制的出现，北美电力互连发生了重大变化。这些变化将对系统运作和规划提出新的要求。在竞争激烈的市场中，开放获取和权力轮转的出现很可能会推动在更高负荷水平上运行和规划系统的需求，从而导致对系统的进一步压力。在很大程度上，足够的系统动态性能将取决于关键控制的正确操作和性能。这些控制的合理设计和鲁棒性对互联电力系统的可靠运行至关重要。这一建议涉及技术的发展，以应用现代鲁棒控制方法来设计和分析大型电力系统的控制。我们提出将现有的鲁棒稳定性分析方法扩展到处理大规模电力系统问题。具体来说，我们打算使用结构化奇异值方法，并开发分析和数值技术来开发大型电力系统的结构特征。我们将研究和发展适用于大规模问题的数值技术。这些发展将涉及与不确定性表征和参数选择、频率扫描、利用分支和定界技术的状态空间方法以及有效的控制综合技术相关的问题。所开发的方法将应用于从两家北美电力公司获得的实际测试系统。

ECS-9810081 Khammash In recent years, the North American Electric Interconnection has undergone major changes with the advent of a competitive market place, and deregulation. These changes will impose new requirements on system operation and planning. It is likely that the emergence of open access, and wheeling of power in a competitive market place will drive the need to operate and plan the system at higher levels of loading, leading to further stress on the system. To a large extent, adequate system dynamic performance will depend on the proper operation and performance of critical controls. Proper design and robust performance of these controls are essential for the reliable operation of the interconnected power system. This proposal deal with development of techniques to apply modern robust control methods to design and analyze controls for large scale power systems. We propose to extend existing methods of robust stability analysis to deal with large scale power system problems. Specifically we intend to use the Structured Singular Value approach, and develop analytical and numerical techniques to exploit the structural characteristics of large power systems. We will investigate and develop numerical techniques which are suitable for large scale problems. The developments would involve issues related to uncertainty characterization and parameter selection, frequency sweeps, state space methods utilizing branch and bound techniques, and efficient techniques for control synthesis. The methods developed will be applied to realistic test systems obtained from two North American Electric Utilities.