Control and Operation of Grid-Connected Wind Farms

Control and Operation of Grid-Connected Wind Farms: Major Issues, Contemporary Solutions, and Open Challenges
Springer | Green Energy | June 26, 2016 | ISBN-10: 331939133X | 137 pages | pdf | 6.8 mb

Authors: Jiang, John N., Tang, Choon Yik, Ramakumar, Rama G.
Moves the story of wind energy control up from the individual turbine to the level of the whole windfarm
Addresses the pressing need for reliable methods of integration of large-scale wind generation in powersystems world-wide
Provides a springboard for researchers and engineers from control and power backgrounds to address key issues arising from wind power integration together in further cooperative research

From the point of view of grid integration and operation, this monograph advances the subject of wind energy control from the individual-unit to the wind-farm level. The basic objectives and requirements for successful integration of wind energy with existing power grids are discussed, followed by an overview of the state of the art, proposed solutions and challenges yet to be resolved.
At the individual-turbine level, a nonlinear controller based on feedback linearization, uncertainty estimation and gradient-based optimization is shown robustly to control both active and reactive power outputs of variable-speed turbines with doubly-fed induction generators. Heuristic coordination of the output of a wind farm, represented by a single equivalent turbine with energy storage to optimize and smooth the active power output is presented.
A generic approximate model of wind turbine control developed using system identification techniques is proposed to advance research and facilitate the treatment of control issues at the wind-farm level. A supervisory wind-farm controller is then introduced with a view to maximizing and regulating active power output under normal operating conditions and unusual contingencies. This helps to make the individual turbines cooperate in such as way that the overall output of the farm accurately tracks a reference and/or is statistically as smooth as possible to improve grid reliability.
The text concludes with an overall discussion of the promise of advanced wind-farm control techniques in making wind an economic energy source and beneficial influence on grid performance. The challenges that warrant further research are succinctly enumerated.
Control and Operation of Grid-Connected Wind Farms is primarily intended for researchers from a systems and control background wishing to apply their expertise to the area of wind-energy generation. At the same time, coverage of contemporary solutions to fundamental operational problems will benefit power/energy engineers endeavoring to promote wind as a reliable and clean source of electrical power.

Number of Illustrations and Tables
34 b/w illustrations, 5 illustrations in colour
Renewable and Green Energy
Renewable and Green Energy

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