Impact Study of PMSG-Based Wind Power Penetration on Power System Transient Stability Using EEAC Theory

Energies

Zhongyi Liu²  Chongru Liu²  Gengyin Li²  Yong Liu¹  Yilu Liu¹ 

[1] Department of Electrical Engineering & Computer Science, University of Tennessee, Knoxville, TN 37996, USA;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;

关键词: permanent magnet synchronous generators (PMSGs);    transient stability;    extended equal area criterion (EEAC);    multi-machine power system;   

DOI  :  10.3390/en81212377

来源: mdpi

【 摘 要 】

Wind turbines with direct-driven permanent magnet synchronous generators (PMSGs) are widely used in wind power generation. According to the dynamic characteristics of PMSGs, an impact analysis of PMSG-based wind power penetration on the transient stability of multi-machine power systems is carried out in this paper based on the theory of extended equal area criterion (EEAC). Considering the most severe PMSG integration situation, the changes in the system’s equivalent power-angle relationships after integrating PMSGs are studied in detail. The system’s equivalent mechanical input power and the fault period electrical output power curves are found to be mainly affected. The analysis demonstrates that the integration of PMSGs can cause either detrimental or beneficial effects on the system transient stability. It is determined by several factors, including the selection of the synchronous generators used to balance wind power, the reactive power control mode of PMSGs and the wind power penetration level. Two different simulation systems are also adopted to verify the analysis results.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.