An active power-frequency control strategy of a DFIG based on subsection control

doi:10.11930/j.issn.1004-9649.2012.2.49.4

Abstract

Abstract: In order to relieve the impact of large-scale grid-connected wind power farms on power system frequency and improve frequency stability, an active power-frequency control strategy of a DFIG is proposed. With the consideration of generation economics, wind power generators can have similar frequency regulation characteristics as conventional generators by using the proposed strategy. The control strategy is divided into four sections: de-loaded operation, frequency regulation, maximum power operation and off-grid operation. The main control parameters in the proposed model are studied; the frequency regulatng ability of the proposed strategy is also analyzed, as well as the influence of wind power penetration and load change on the DFIG frequency regulation. The active power-frequency characteristics of the DFIG are obtained based on the analyses. The simulation result proves the feasibility and validity of the proposed method.

Key words: DFIG, active power-frequency control, de-loaded operation, frequency characteristics

CLC Number:

TM614

LIN Li， LI Xiao-yu， WANG Shi-qian， SHI Tian， LI Hao-jiong. An active power-frequency control strategy of a DFIG based on subsection control[J]. Electric Power, 2012, 45(2): 49-53.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2012.2.49.4

https://www.electricpower.com.cn/EN/Y2012/V45/I2/49

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