Journal ArticleDOI
Temporary Primary Frequency Control Support by Variable Speed Wind Turbines— Potential and Applications
TLDR
In this paper, the authors quantified the capability of providing a short-term excess active power support of a commercial multi-megawatt variable speed wind turbine and generalized the findings by considering different wind turbine (WT) physical parameters in a wider range from the example case.Abstract:
This paper quantifies the capability of providing a short-term excess active power support of a commercial multi-megawatt variable speed wind turbine (VSWT) and generalizes the findings by considering different wind turbine (WT) physical parameters in a wider range from the example case. The paper also identifies some possible applications of it, in particular, in a hydro dominated system. To be able to quantify the system characteristic, a delay model of the studied hydro system is developed. Due to the fact that the initial power surge of a hydro turbine is opposite to that desired, the short-term extra active power support from a wind farm (WF) could be beneficial for a hydro dominated system in arresting the initial frequency fall, which corresponds to an improvement in the system temporary minimum frequency (TMF). The improvements in the TMF are calculated by using both the developed delay model and a detailed model, and the results show good agreement. It is shown that the WT under consideration can provide a 0.1 pu extra active power support for 10 s quite easily which is twice the Hydro-Quebec requirement.read more
Citations
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Journal ArticleDOI
A review of grid code technical requirements for wind farms
TL;DR: In this article, the authors provide an overview of grid code technical requirements regarding the connection of large wind farms to the electric power systems, including active and reactive power regulation, voltage and frequency operating limits and wind farm behaviour during grid disturbances.
Journal ArticleDOI
Overview of Multi-MW Wind Turbines and Wind Parks
TL;DR: The most-adopted wind-turbine systems, the adopted generators, the topologies of the converters, the generator control and grid connection issues, as well as their arrangement in wind parks are reviewed.
Journal ArticleDOI
Virtual synchronous generators: A survey and new perspectives
TL;DR: In this article, the authors reviewed the fundamentals and main concept of virtual synchronous generators (VSGs) and their role to support the power grid control, and focused on the poetical role of VSGs in the grid frequency regulation task.
Journal ArticleDOI
Inertia response and frequency control techniques for renewable energy sources: A review
TL;DR: This paper reviews several inertia and frequency control techniques proposed for variable speed wind turbines and solar PV generators and includes inertia emulation, fast power reserve, and droop techniques, which are used to release the RESs reserve power at under frequency events.
Journal ArticleDOI
Impact of Low Rotational Inertia on Power System Stability and Operation
TL;DR: In this article, the impact of low rotational inertia on power system stability and operation is investigated, and new analysis insights and impact mitigation options are provided for power systems with high RES shares.
References
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BookDOI
Wind Power in Power Systems
TL;DR: In this article, the authors focus on the generation of electricity from clean and renewable sources, and show that wind energy has become the world's fastest growing energy source, and that renewable energy is the most promising energy source.
Journal ArticleDOI
Control of permanent-magnet generators applied to variable-speed wind-energy systems connected to the grid
TL;DR: In this article, the operation and control of a variable-speed wind generator is described, which is connected to the power network by means of a fully controlled frequency converter, which consists of a pulsewidth modulation (PWM) rectifier, an intermediate dc circuit, and a PWM inverter.
Journal ArticleDOI
Wind turbines emulating inertia and supporting primary frequency control
TL;DR: In this article, a method is proposed to let variable-speed wind turbines emulate inertia and support primary frequency control, where the required power is obtained from the kinetic energy stored in the rotating mass of the turbine blades.
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
Comparison of the response of doubly fed and fixed-speed induction generator wind turbines to changes in network frequency
Janaka Ekanayake,Nick Jenkins +1 more
TL;DR: In this paper, a doubly fed induction generator (DFIG)-based wind turbine is used to control a restraining torque on the rotor according to a predetermined curve with respect to the rotor speed.
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Comparison of the response of doubly fed and fixed-speed induction generator wind turbines to changes in network frequency
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