论文标题
优化可变速度水电以提供快速频率储量的控制
Optimized Control of Variable Speed Hydropower for Provision of Fast Frequency Reserves
论文作者
论文摘要
本文介绍了可变速度水电（VSHP）植物的控制器的设计，目的是优化植物的性能。控制目标意味着能够快速响应频率偏差，同时将电力和液压变量保持在其约束之内。开发了模型预测控制器（MPC），以与电源电子转换器的虚拟同步发电机（VSG）控制涡轮控制器协调。仿真结果表明，VSG能够利用涡轮机和发电机的旋转能来提供快速功率响应。 MPC控制涡轮机的导向叶片开口，以恢复名义涡轮旋转速度。如果由于液压系统的限制不可能，则MPC通过更改VSG功率参考来调整VSHP的功率输出。建议的控制系统允许VSHP提供快速频率储量（FFR）。
This paper deals with the design of controllers for variable speed hydropower (VSHP) plants with the objective of optimize the plants' performance. The control objectives imply enabling fast responses to frequency deviations while keeping the electric and hydraulic variables within their constraints. A model predictive controller (MPC) was developed to coordinate the turbine controller with the virtual synchronous generator (VSG) control of the power electronics converter. The simulation results show that the VSG is able to deliver fast power responses by utilizing the rotational energy of the turbine and the generator. The MPC controls the guide vane opening of the turbine to regain the nominal turbine rotational speed. If this is not possible due to the constraints of the hydraulic system, the MPC adjusts the power output of the VSHP by changing the VSG power reference. The proposed control system allows the VSHP to provide fast frequency reserves (FFR).
