互联电网预防控制和紧急控制在线预决策系统

针对电网互联和电力市场化给电网安全稳定经济运行带来的挑战，阐述了互联电网在线暂态安全分析与控制的重要性，强调其在线预决策系统（OPS）不仅要考虑功角稳定性，而且要计及电压和频率的安全性，而预防控制和紧急控制也应该在协调的框架下研究。探讨了一体化OPS与调度中心其他系统的联系，以及多个能量管理系统（EMS）和多个安全稳定控制系统的数据共享；提出了相应的框架，并采用分布式并行计算技术来提高该系统的快速性和可靠性。最后介绍了一个应用实例及其实施中的关键问题。

On-line Pre-decision Based Preventive and Emergency Control System for Interconnected Power Grids

Power grid interconnection and power industry deregulation bring challenges to the secure and economic operation of power systems. The importance of on-line transient security analysis and control for interconnected power grids is expounded. It is stressed that not only angle stability, but also voltage and frequency security should be considered in on-line pre-decision system (OPS) for interconnected power grids. And the preventive and emergency control should also be arranged in a coordinated framework. The relationship between the integrated OPS and the other systems in power dispatching center is discussed, and the data sharing among several energy management systems (EMSs) and several stability control systems is also discussed. Moreover, the corresponding framework is presented, and the distributed parallel calculation techniques are adopted to improve the system's rapidity and reliability. Finally, an application example and some key implementation issues are presented and discussed.