Improved Transient Modeling and Stability Analysis for Grid-Following Wind Turbine: Third-Order Sequence Mapping EAC

The increasing penetration of wind power leads to diverse stability issues, which present more extreme fluctuation and nonlinearity, especially under a weak grid. For the nonlinear transient process, it is particularly complex to estimate since no analytical solution can be found in math. To determi...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2024-08, Vol.39 (4), p.2015-2027
Main Authors: Li, Ruibo, Yan, Xiangwu, Wang, Yanbo, Zhang, Qi, Chen, Zhe
Format: Article
Language:English
Subjects:
Active control
Control stability
Damping
Equal area criterion
Exact solutions
Induction generators
Mapping
Nonlinearity
Numerical stability
Phase locked loops
phase-locked loop
Power control
Power system stability
sequence mapping
Stability analysis
Stability criteria
System effectiveness
third-order
Trajectory analysis
Transient analysis
Transient stability
Wind power
Wind turbines
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Summary:The increasing penetration of wind power leads to diverse stability issues, which present more extreme fluctuation and nonlinearity, especially under a weak grid. For the nonlinear transient process, it is particularly complex to estimate since no analytical solution can be found in math. To determine the transient stability of the grid-following (GFL) wind turbine, this article develops a third-order transient model of the GFL-doubly fed induction generator, which consists of a second-order phase-locked loop model and a first-order active power control model. Then, a motion discretization equal area criterion (MD-EAC) method is proposed to estimate the damping effect in the second-order system, which could enhance transient trajectory accuracy and improve stable region reliability. Based on MD-EAC, a power angle to time sequence mapping EAC (SM-EAC) method is proposed to perform the stability analysis in third-order systems with active power control. Finally, numerical simulation results are given to validate the effectiveness of the proposed MD-EAC and SM-EAC under various scenarios. And the mechanism of multi-swing stability is analyzed by numerical simulation and SM-EAC.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2024.3355901