Journal ArticleDOI
Enhancing Frequency Response Control by DFIGs in the High Wind Penetrated Power Systems
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TLDR
In this paper, the authors explore several operating strategies for doubly fed induction generators (DFIGs) to support system frequency with less sacrifice in the wind energy production, and show that the proposed strategies can enhance regulation performance in the high wind penetrated power system.Abstract:
As wind power retains a significant proportion of generation mix in the electric system, we foresee that less fossil fuel units will be on service. Under this situation, it may impact system's frequency security due to the lack of frequency support from units. To make up for such a system change, wind turbines should actively provide frequency response upon request. For wind turbines to achieve this goal, active power output of the wind turbine should be controllable so that the generating margin could be preserved for frequency response. Therefore, the presentation of this paper will begin with the demonstration of the control scheme for the doubly fed induction generator (DFIG). Simulation results validate the effectiveness of the methodology in regulating wind power upon operator's request, while stability is assured under variant wind speeds. Following that, this paper will explore several operating strategies for DFIGs to support system frequency with less sacrifice in the wind energy production. Simulation results show that the proposed strategies can enhance regulation performance in the high wind penetrated power system.read more
Citations
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Journal ArticleDOI
Overview of Control Systems for the Operation of DFIGs in Wind Energy Applications
TL;DR: The control systems for the operation of DFIGs in wind energy applications are reviewed for connections to balanced or unbalanced grids, and sensorless control.
Journal ArticleDOI
A literature survey on load–frequency control for conventional and distribution generation power systems
TL;DR: An extensive literature review on load-frequency control (LFC) problem in power system has been highlighted in this article, where various configuration of power system models and control techniques/strategies that concerns to LFC issues have been addressed in conventional as well as distribution generation-based power systems.
Journal ArticleDOI
Primary frequency regulation by deloaded wind turbines using variable droop
TL;DR: In this article, a method to improve the primary frequency contribution of grid connected variable speed wind turbine generators (WTGs) is introduced to provide relief to the grid during depressed frequency conditions.
Journal ArticleDOI
Virtual Inertia: Current Trends and Future Directions
Ujjwol Tamrakar,Dipesh Shrestha,Manisha Maharjan,Bishnu P. Bhattarai,Timothy M. Hansen,Reinaldo Tonkoski +5 more
TL;DR: In this article, the authors present a literature review of the current state-of-the-art of virtual inertia implementation techniques and explore potential research directions and challenges, and discuss several research needs, especially for systems level integration of VINs.
Journal ArticleDOI
Implementing Virtual Inertia in DFIG-Based Wind Power Generation
TL;DR: In this paper, the virtual inertia method is used to improve the system dynamic behavior, which imitates the kinetic inertia of a synchronous generator, and the proposed method focuses on short-term oscillations and incorporates no long-term power regulation.
References
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Journal ArticleDOI
Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation
Ruben Pena,Jon Clare,Greg Asher +2 more
TL;DR: The paper describes the engineering and design of a doubly fed induction generator (DFIG), using back-to-back PWM voltage-source converters in the rotor circuit, which results in independent control of active and reactive power drawn the supply, while ensuring sinusoidal supply currents.
Journal ArticleDOI
Frequency control and wind turbine technologies
TL;DR: In this paper, the impact of wind turbine inertial response characteristics on frequency control of small isolated power systems is discussed. But, due to differing electromechanical characteristics, this inherent link is not present in wind turbine generators.
Journal ArticleDOI
Participation of Doubly Fed Induction Wind Generators in System Frequency Regulation
R.G. de Almeida,João Peças Lopes +1 more
TL;DR: In this paper, the authors proposed a control scheme that allows doubly fed induction wind generators (DFIWG) to participate effectively in system frequency regulation. But, the control strategy defined at the wind generator to supply primary frequency regulation capability exploits a combination of control of the static converters and pitch control, adjusting the rotor speed and the active power according to the deloaded optimum power extraction curve.
Journal ArticleDOI
Output power leveling of wind turbine Generator for all operating regions by pitch angle control
Tomonobu Senjyu,Ryosei Sakamoto,Naomitsu Urasaki,Toshihisa Funabashi,H. Fujita,Hideomi Sekine +5 more
TL;DR: In this paper, a generalized predictive control strategy based on average wind speed and standard deviation of wind speed was proposed to control the pitch angle of the blades of a wind turbine generator.
Journal ArticleDOI
Automatic generation control of a wind farm with variable speed wind turbines
TL;DR: In this article, a new integrated control system of a wind farm according to the utility manager's requirements is presented, which is based on two control levels: a supervisory system controls active and reactive power of the whole wind farm by sending out set points to all wind turbines, and a machine control system ensures that set points at the wind turbine level are reached.
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