电力系统保护与控制2025，Vol.53Issue(18)：12-25,14.DOI:10.19783/j.cnki.pspc.241309
采用自抗扰控制的双馈风机定转子侧协同低电压穿越策略研究
Research on coordinated low-voltage ride through strategy for DFIGs stator and rotor sides based on active disturbance rejection control
摘要
Abstract
In existing research on low-voltage ride through(LVRT)of double fed induction generators(DFIGs),the main LVRT measure is to engage the crowbar protection circuit.However,this approach is relatively simple and passive,and the DFIG still needs to absorb a certain amount of reactive power,making it difficult for the system to achieve satisfactory LVRT performance.Aiming at this problem,this paper proposes a coordinated LVRT strategy for the stator and rotor sides with linear active disturbance rejection control(LADRC).The stator side adopts series dynamic impedance to suppress the rise of rotor current.The grid-side converter(GSC)adopts LADRC to improve the disturbance rejection ability of the DC-link voltage,and creates favorable conditions for the auxiliary control of the rotor-side converter(RSC).According to different degrees of voltage drop,the RSC adopts either reactive power compensation or active flux attenuation control strategies to optimize reactive power output during LVRT.Considering phase jumps,the short-circuit characteristics of the DFIG under the LADRC and coordinated LVRT strategy of the stator and rotor sides are analyzed,and the short-circuit current is derived analytically.Finally,the effectiveness of the cooperative LVRT strategy and the correctness of the analytical expression of the short-circuit current are verified by simulations.关键词
双馈风力发电机/定子串联动态阻抗/线性自抗扰控制/无功补偿/磁链主动衰减控制/低电压穿越Key words
double fed induction generator(DFIG)/stator series dynamic impedance/linear active disturbance rejection control(LADRC)/reactive power compensation/active flux attenuation control/low-voltage ride through(LVRT)引用本文复制引用
张丕豪,束洪春,孙士云,徐韬,陈有为,蒋朝顺,刘维胜..采用自抗扰控制的双馈风机定转子侧协同低电压穿越策略研究[J].电力系统保护与控制,2025,53(18):12-25,14.基金项目
This work is supported by the National Natural Science Foundation of China(No.52037003). 国家自然科学基金项目资助(52037003) （No.52037003）
云南省重大专项资助(202002AF080001) （202002AF080001）
