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Content Provider | IEEE Xplore Digital Library |
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Author | Jingjing Zhai Haoming Liu |
Copyright Year | 2014 |
Description | Author affiliation: Coll. of Energy & Electr. Eng., Hohai Univ., Nanjing, China (Haoming Liu) || Sch. of Electr. Power Eng., Nanjing Inst. of Technol., Nanjing, China (Jingjing Zhai) |
Abstract | If a wind farm is weakly connected to a power grid, then the voltage of the connection point fluctuates frequently due to the changeable wind speed. The active and reactive power of a doubly-fed induction generator (DFIG) can be decoupling controlled and the grid-side converter (GSC) of a DFIG can also generate some reactive power by adjusting the power factor, thus a DFIG can be considered as a reactive power resource to stabilize the voltage of the connection bus. Based on the power relationship of a DFIG, the up and down reactive power limitations of DFIG stator and GSC are analyzed. Then a reactive power control strategy of a DFIG wind farm is proposed, in which, a certain number of DFIGs are selected to support reactive power to the power grid when the voltage of the connection point drops. The control strategy aims at bringing the reactive power capability of DFIG into play and cutting down the investments in the reactive power compensation devices which are used less. The simulation model of a grid-connected DFIG wind farm is developed on the PSCAD/EMTDC platform, and the simulation results demonstrate the effectiveness of the control strategy proposed. |
Starting Page | 1 |
Ending Page | 5 |
File Size | 507912 |
Page Count | 5 |
File Format | |
ISBN | 9781479964154 |
DOI | 10.1109/PESGM.2014.6939441 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2014-07-27 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Reactive power Wind farms Voltage control Wind turbines Stators Reactive power control Power grids power limitation Doubly-fed induction generator (DFIG) reactive power control voltage control |
Content Type | Text |
Resource Type | Article |
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