Optimization of primary frequency regulation strategy of wind turbines based on rotational kinetic energy release

被引：0
|
作者：
Gao J. [1 ]
Guo J. [1 ]
Wang T. [1 ]
Ma S. [1 ]
Luo K. [1 ]
Hou W. [1 ]
机构：
[1] China Electric Power Research Institute, Beijing
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 07期
关键词：
frequency regulation energy; optimal control; primary frequency control; transient frequency stability; wind turbine rotor kinetic energy release;
D O I：
10.13245/j.hust.240843
中图分类号：
学科分类号：
摘要：
In the frequency dynamic response process following disturbances in the power system，a frequency regulation strategy was proposed with the aim of approaching the minimization of frequency regulation costs for wind turbine units that do not retain reserve power but rely solely on rotor kinetic energy release for short-term frequency support． An analysis of the impact of frequency regulation energy release strategy on frequency response was conducted，and the quantified effects of energy release at different time on frequency variations were derived by using a state transition matrix．An optimal control problem for short-term frequency regulation energy release based on an aggregate model was established，and the optimal trajectory of energy release was obtained through analysis from an energy perspective．Further considering practical implementation，a short-term frequency support strategy for wind turbines in the primary frequency regulation stage was proposed．This strategy was applied to a typical case to verify the effectiveness of the auxiliary frequency regulation strategy． The results demonstrate that the proposed frequency regulation strategy can optimize the release of kinetic energy from the wind turbine rotor and reduce the cost of frequency regulation，all while ensuring the security and stability of the grid frequency，and it combines reliability and cost-effectiveness. © 2024 Huazhong University of Science and Technology. All rights reserved.
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页码：60 / 68
页数：8
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