Load flow analysis for variable speed offshore wind farms
Load flow analysis for variable speed offshore wind farms
- Author(s): M. Zhao ; Z. Chen ; F. Blaabjerg
- DOI: 10.1049/iet-rpg:20070094
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- Author(s): M. Zhao 1 ; Z. Chen 1 ; F. Blaabjerg 1
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View affiliations
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Affiliations:
1: Institute of Energy Technology, Aalborg University, Aalborg East, Denmark
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Affiliations:
1: Institute of Energy Technology, Aalborg University, Aalborg East, Denmark
- Source:
Volume 3, Issue 2,
June 2009,
p.
120 – 132
DOI: 10.1049/iet-rpg:20070094 , Print ISSN 1752-1416, Online ISSN 1752-1424
A serial AC–DC integrated load flow algorithm for variable speed offshore wind farms is proposed. It divides the electrical system of a wind farm into several local networks, and different load flow methods are used for these local networks sequentially. This method is fast, more accurate, and many factors such as the different wind farm configurations, the control of wind turbines and the power losses of pulse width modulation converters are considered. The DC/DC converter model is proposed and integrated into load flow algorithm by modifying the Jacobian matrix. Two iterative methods are proposed and integrated into the load flow algorithm: one takes into account the control strategy of converters and the other considers the power losses of converters. In addition, different types of variable speed wind turbine systems with different control methods are investigated. Finally, the method is demonstrated using an 80-MW offshore wind farm.
Inspec keywords: iterative methods; Jacobian matrices; load flow control; wind turbines; PWM power convertors; DC-DC power convertors
Other keywords:
Subjects: Interpolation and function approximation (numerical analysis); Interpolation and function approximation (numerical analysis); Power convertors and power supplies to apparatus; Control of electric power systems; Power system control; Linear algebra (numerical analysis); Linear algebra (numerical analysis); Wind power plants
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