DU Chengmao,DU Xiong,SU Jingyuan,et al.Admittance Modeling and Subsynchronous Oscillation Risk Analysis of DFIG-based Wind Turbine with Stator Current Control[J].Automation of Electric Power Systems,2023,47(13):159-167.
DU Chengmao,DU Xiong,SU Jingyuan,et al.Admittance Modeling and Subsynchronous Oscillation Risk Analysis of DFIG-based Wind Turbine with Stator Current Control[J].Automation of Electric Power Systems,2023,47(13):159-167. DOI: 10.7500/AEPS20221005004.
Admittance Modeling and Subsynchronous Oscillation Risk Analysis of DFIG-based Wind Turbine with Stator Current Control
Stator current control (SCC) has the advantage that the reference current is not affected by doubly-fed induction generation (DFIG) parameter drift. However
the subsynchronous oscillation caused by the DFIG-based wind turbine with SCC and series compensation line will hinder the safe accommodation of wind power. To address this problem
the small signal transfer law of SCC-DFIG is deeply analyzed. Then
considering the influence of DC bus dynamics
frequency coupling and control dynamic characteristics
an admittance model is established to accurately characterize the frequency domain characteristics of the DFIG-based wind turbine. By analyzing the distribution law of negative resistance of DFIG-based wind turbine under all the wind speed conditions
a virtual resistance control strategy for all wind speeds is proposed. The MATLAB/Simulink simulation results show that the DFIG-based wind turbine with SCC has higher oscillation risk than rotor current control. With the increase of SCC proportional coefficient or the decrease of wind speed
the oscillation risk of grid-connected system is greater. The effectiveness of the proposed stability control strategy for subsynchronous oscillation suppression under different wind speed conditions is verified by the simulation.
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references
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Location of Subsynchronous Oscillation Source in Power Systems Using Multivariate Synchrosqueezing Generalized S-Transform
Grid-connected Wide-band Oscillation Analysis of DFIG-based Wind Turbine Based on Polynomial Approximation of All Eigenvalue Trajectories
Analysis of Influence of Virtual Synchronous Control on Subsynchronous Oscillation Damping for Grid-connected Wind Power System
Related Author
DU Chengmao
DU Xiong
SU Jingyuan
FAN Lijuan
LI Hongxin
AN Yu
JIANG Tao
ZHANG Peng
Related Institution
Shenzhen Power Supply Bureau Co., Ltd.
State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University)
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University)
College of Electrical Engineering, Zhejiang University
School of Electrical Engineering, Shandong University