基于模糊控制的风电机组变系数综合惯性控制策略

针对传统综合惯性控制在系统频率发生突变参与调频时,调节系数适应性、灵活性较差的问题,提出了一种基于模糊控制的双馈风电机组变系数综合惯性控制策略。首先,分析了双馈风电机组传统综合惯性控制系数调整的必要性;其次,分别对虚拟惯性控制和下垂控制各自附加一个单独的模糊控制回路使调节系数随风速和频率变化量进行实时调整;最后,在MATLAB/Simulink 中建立了三机九节点系统模型仿真,验证了与传统固定系数综合惯性控制相比,变系数综合惯性控制策略的适应性和灵活性更好。

Variable Coefficient Integrated Inertia Control Strategy of Fan Based on Fuzzy Control

Taking into account the problem of the adjustment coefficient of traditional integrated inertial control systems not being able to adapt to the changes in frequency and participation in frequency modulation when the system frequency changes,a variable coefficient integrated inertia control strategy for doubly-fed wind turbine based on fuzzy control is proposed.First,the necessity of adjusting the traditional integrated inertial control coefficient of doubly fed wind turbines is analyzed.Secondly,a separate fuzzy control loop is added to the virtual inertial control and droop control respectively to dynamically adjust the control coefficient with the wind speed and frequency variation.Finally,a three-machine nine-node system model simulation is established in Matlab/Simulink.The results show that the variable coefficient integrated inertial control strategy is more adaptive and flexible than the traditional integrated inertial control strategy.