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研究了基于自抗扰技术的可变速抽水蓄能机组交流励磁控制系统。文中考虑逆变器对输出电压的影响,建立了变速机组的数学模型,以此为基础设计了二阶自抗扰控制器,并提出了基于自抗扰技术的交流励磁控制系统。文中通过仿真对所提励磁系统的可行性以及控制性能进行了定量的分析,结果表明,该励磁系统能够很好地控制可变速机组的发电以及抽水两种工况,且较传统比例—积分(PI)控制器具有更好的动态性能以及鲁棒性。
The AC excitation control system of variable speed pumped storage unit based on ADR technology was studied. In this paper, the influence of inverter on output voltage is considered, and the mathematical model of gearbox is established. Based on this, a second order AGRC controller is designed and an AC excitation control system based on ADRC is proposed. The feasibility of the proposed magnetic system and its control performance are analyzed quantitatively by simulation. The results show that the excitation system can control both the power generation and pumping of variable speed units better than traditional proportional-integral PI) controller has better dynamic performance and robustness.