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多机系统所特有的多摆失步和多模振荡现象是实际电力系统暂稳研究中的重要问题。目前以单机—无穷大系统为模型所设计的 FACTS控制器 ,因系统模型的局限性不能很好地解决上述问题 ,文中提出了 4机系统模型作为 FACTS暂稳控制研究的基本模型。以可控串联补偿 ( TCSC)为例 ,进行了 PI控制在单机—无穷大系统和 4机系统上的性能比较 ,说明了提出 4机系统模型的必要性。通过在 4机系统上进行迭代学习控制 ( ILC)的研究 ,并在 1 7机系统上进行校核 ,验证了该模型的正确性和典型性。
The multi-machine system peculiarity of multi-pendulum and multi-mode oscillation phenomenon is an important issue in the real power system transient stability study. At present, the FACTS controller designed by single machine-infinity system can not solve the above problems because of the limitations of the system model. In this paper, a four-machine system model is proposed as the basic model for FACTS control. Taking controllable series compensation (TCSC) as an example, the performance comparison of PI control on single-machine-infinite system and 4-machine system is demonstrated, which shows the necessity of 4-machine system model. By studying ILC in 4-machine system and verifying it on a 17-machine system, the correctness and typicality of this model are verified.