Robust Control of Large Scale Power Systems

ECS-9810081 Khammash近年来，随着竞争市场的到来和监管的放松，北美电力互联发生了重大变化。这些变化将对系统运行和规划提出新的要求。开放获取的出现，以及在竞争激烈的市场中的权力轮换，很可能会促使人们需要在更高的负载水平上运营和规划系统，从而导致系统面临进一步的压力。在很大程度上，适当的系统动态性能将取决于关键控制的正确操作和性能。这些控制器的合理设计和稳健性能对于互联电力系统的可靠运行至关重要。这项建议涉及应用现代鲁棒控制方法设计和分析大规模电力系统控制的技术的发展。我们建议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。具体地说，我们打算使用结构奇异值方法，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合于大规模问题的数值技术。这些发展将涉及不确定性表征和参数选择、频率扫描、利用分支和界限技术的状态空间方法以及控制综合的有效技术等问题。开发的方法将应用于从两个北美电力公用事业公司获得的现实测试系统。

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.