可变速机组由于其转换效率高、适应水头和出力范围宽、调节性能优越等特点越来越受到研究重视。本文通过对可变速机组的系统组成、调节原理介绍,针对机组水泵、水轮机不同工况,提出了机组效率寻优、功率调节、一次调频控制策略、调速励磁的联合控制等方面的控制策略,对于可变速机组的控制做出了一些有益探索,可供大型抽水蓄能电站可变速机组的控制研究提供一定参考。 Because of its high conversion efficiency, adaptable head and output range, variable speed unit is more and more attention due to its excellent performance. In this paper, based on the introduction of system composition and adjustment principle of variable speed unit, the control strategies of unit efficiency optimization, power regulation, primary frequency control strategy and speed control are put forward according to different working conditions of unit pump and turbine. Some useful explorations have been made on the control of variable speed units, which can provide reference for the control research of variable speed units in large pumped storage power stations.