TRANSIENT COORDINATED CONTROL STRATEGY OF GRID FORMING-PERMANENT MAGNET SYNCHRONOUS GENERATOR CONSIDERING POWER ANGLE STABILITY AND FAULT CURRENT LIMITATION

Duan Jiandong; Chen Baoqiao; Yue Yiting; Tao Jiaxin

doi:10.19912/j.0254-0096.tynxb.2024-1468

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 545-553. DOI: 10.19912/j.0254-0096.tynxb.2024-1468

TRANSIENT COORDINATED CONTROL STRATEGY OF GRID FORMING-PERMANENT MAGNET SYNCHRONOUS GENERATOR CONSIDERING POWER ANGLE STABILITY AND FAULT CURRENT LIMITATION

Duan Jiandong, Chen Baoqiao, Yue Yiting, Tao Jiaxin

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Abstract

Based on the analysis of the power angle and current transient characteristics of the grid forming-permanent magnet synchronous generator （GFM-PMSG）, this paper explains the mechanisms behind power angle instability and overcurrent, as well as their mutual influence. A transient coordinated control strategy considering power angle stability and fault current limiting is proposed. The unbalanced power compensation is constructed in the active power loop of the grid forming control to suppress the increase in the power angle, while the reactive power command is adjusted to meet the current limit target, thereby limiting overcurrent. Simulation tests of the GFM-PMSG with different transient voltage drop depths, along with comparisons to other transient control strategies, show that the proposed coordinated control strategy can effectively suppress power angle increase and wind turbine instability. Additionally, it limits the output fault current within the allowable range, ensuring the stability and safety of the GFM-PMSG.

Key words

wind turbines / grid forming control / PMSG / power angle stability / fault current limitation / transient coordinated control

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Duan Jiandong, Chen Baoqiao, Yue Yiting, Tao Jiaxin. TRANSIENT COORDINATED CONTROL STRATEGY OF GRID FORMING-PERMANENT MAGNET SYNCHRONOUS GENERATOR CONSIDERING POWER ANGLE STABILITY AND FAULT CURRENT LIMITATION[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 545-553 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1468

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