使用双励机提高远距离输电线路的稳定性

Using Dual-Excited Synchronous Generators for Improving Long Distance Transmission Stability

本文介绍了双轴励磁同步发电机（双励机）的两种励磁控制方式以及使用双励机提高远距离输电线路稳定性的效果，计算机仿真和动模实验表明：双励机的励磁绕组结构使得双励机具有良好的可控性，能充分发挥励磁控制的作用。使用双励机能大幅度地提高系统的静态稳定功率极限和暂态稳定功率极限，并具有很强的进相运行能力和较好的动态特性。

In the paper, the q-axis control and optimal nonlinear 2-axis excitation control methods uesd in dual-excited synchronous generators and the results of improving long distance transmission stability are introduced.The computer simulation and the micromachine experiment show that the construction of the dual-excited synchronous generator's rotor makes the generator beTter controllable and may hiing excitation control into play fully. Dual-excited synChronous generator can improve system's static stability and transient Stability to great extent and the generator has stronger ability to operate at leadingpower region and better dynamic characteristic than conventional generators.