分布式能源2023，Vol.8Issue(6)：1-10,10.DOI:10.16513/j.2096-2185.DE.2308601
次同步电流双通道附加阻尼抑制次同步振荡策略及阻抗模型分析
Subsynchronous Current Dual Channel Additional Damping Suppression Subsynchronous Oscillation Strategy and Impedance Model Analysis
摘要
Abstract
Aiming at the phenomenon of subsynchronous oscillation(SSO)caused by direct drive wind turbines under weak power grid,a dual-channel additional damping strategy based on subsynchronous current is proposed for suppression.Firstly,the influence of weak power grid on SSO is verified,and secondly,combined with the direct drive fan connected to the weak power grid to extract subsynchronous current from the system to analyze the suppression mechanism,the structure of additional damping controller and its parameters are designed.Then,an impedance model considering the frequency coupling additional damping control link is established and its stability is verified.Finally,the proposed strategy is simulated and compared with undamped control and traditional single-channel damped control.The results show that compared with undamping control and single-channel damping control,the proposed method reduces the SSO fluctuation range,suppresses SSO phenomenon more effectively and has better adaptability.关键词
弱电网/直驱风电机组/次同步振荡/附加阻尼抑制Key words
weak grids/direct drive wind turbines/subsynchronous oscillation/additional damping control分类
能源科技引用本文复制引用
李博浩,郭昆丽,吕家君,蔡维正,白阳,任蓓蕾,朱婷华..次同步电流双通道附加阻尼抑制次同步振荡策略及阻抗模型分析[J].分布式能源,2023,8(6):1-10,10.基金项目
中国纺织工业联合会科技指导性计划项目(2022086) （2022086）
陕西省教育厅科研计划项目(21JK0655)This work is supported by China National Textile and Apparel Council Science and Technology Guiding Program(2022086),Shaanxi Provincial Department of Education Scientific Research Program Project(21JK0655) （21JK0655）
