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This paper presents a new method of using co-ordinated control and short term wind speed prediction to smooth the output of an array of wind turbines. The proposed controller uses knowledge of the kinetic energy storage potential in the rotor disc to allow production of piecewise static power outputs from variable wind inputs. Previous studies have shown that there are large peaks in wind power variability...
In urban areas, where land is costly, building integrated wind energy conversion systems can be embedded into the existing infrastructure to meet an increasing load demand. Recently small scale wind turbines (less than 10kw) are installed in great numbers on the roof-top of residential houses, commercial and high rising buildings. This paper presents an overview of the current technologies being implemented...
Wind energy is the fastest growing source of renewable energy in the power industry and it will continue to grow worldwide as many countries are developing plans for its future development. For power system operators, this increasing contribution of wind energy to the grid poses new challenges that need to be addressed in order to ensure the reliability and security of the electric power grid. One...
This paper studies the short-term grid voltage stability of double cage induction generators in fixed speed wind turbines. The performed analysis shows that for voltage stability studies of fixed speed wind turbines with induction generators (either single or double cage), the mechanical rotor turbine model is preferable as a detailed aerodynamic model. Simulations of the suggested modeling approaches...
This paper, first, develops the reactive power capabilities of wind power generator and then discusses reactive power ancillary services issues related to the wind farms in the electricity market. Presently, the doubly fed induction generator (DFIG) system, with partial rated power electronic converters in the rotor circuit, is the most popular and widely used for the wind power generation due to...
This paper analyzes the impact on transient and frequency stability for a power system at very high wind penetration (40% wind). Wind penetration is based on the doubly-fed induction generator (DFIG), and a systematic approach has been adopted for wind power integration. A sensitivity analysis has been carried out for each wind integration scenario and for different wind generator loading conditions...
A DFIG wind turbine is a variable-speed wind turbine widely used in modern wind power industry. The maximum power extraction of the turbine is affected by (1) electrical characteristics of the generator, (2) aerodynamic characteristics of the turbine blades, and (3) maximum power extraction control strategies. This paper presents a DFIG maximum power extraction study through integrated steady-state...
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