Volume 23, Issue 1 (JIAEEE Vol.23 No.1 2026)                   Journal of Iranian Association of Electrical and Electronics Engineers 2026, 23(1): 0-0 | Back to browse issues page

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Abbasi S. Effect of gearbox ratio and reactive power generation on power systems transient stability with high penetration of DFIGs. Journal of Iranian Association of Electrical and Electronics Engineers 2026; 23 (1)
URL: http://jiaeee.com/article-1-1757-en.html
Effect of gearbox ratio and reactive power generation on power systems transient stability with high penetration of DFIGs
Shahriar Abbasi *
National University of Skills (NUS)
Abstract:   (8 Views)
The effect of increasing penetration of doubly-fed induction generator (DFIG)-based wind farms on power system transient stability is investigated in this work. The time-domain simulation is done and the impact of such factors as the power system strength and the reactive power compensation by DFIG on transient stability are analyzed by increasing the wind power penetration. Unlike other research works, in this paper, the effect of the reactive power compensation by DFIG has been investigated comprehensively, in terms of converter rating. Moreover, since the rated rotor speed of DFIG has a significant impact on the electrical torque and machine currents and on the other hand, the rated rotor speed in DFIG can be chosen arbitrarily by adjusting the gearbox ratio; in an innovative approach, the gearbox ratio is analyzed as one of the factors affecting the transient stability improvement. Accordingly, simulation results indicate that in all cases, the grid situation improves in terms of power system transient stability by decreasing the rated rotor speed of the DFIG.
 
Keywords: Doubly fed induction generator, Gearbox ratio, Transient stability assessment, Critical clearing time.
     
Type of Article: Research | Subject: Power
Received: 2024/08/30 | Accepted: 2025/07/11
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