Power Fluctuations in an Isolated Wind Plant

Carrillo, C.; Feijóo, Andrés; Cidrás, J.; González, José Manuel

doi:10.1109/tec.2003.822369

Cited by 71 publications

(23 citation statements)

References 3 publications

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“…This task is complex due to the random nature of the wind, which does not exactly follow any known statistical distribution [2]; this behavior is reflected, to a certain extent, in the power delivered by a wind turbine generator (WTG) [3][4][5]. Therefore, the best way to characterize the wind speed at a specific location is to perform "in-situ" measurements, which should last several years.…”

Section: Open Accessmentioning

confidence: 99%

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An Approach to Determine the Weibull Parameters for Wind Energy Analysis: The Case of Galicia (Spain)

et al. 2014

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Abstract:The Weibull probability density function (PDF) has mostly been used to fit wind speed distributions for wind energy applications. The goodness of fit of the results depends on the estimation method that was used and the wind type of the analyzed area. In this paper, a study on a particular area (Galicia) was performed to test the performance of several fitting methods. The goodness of fit was evaluated by well-known indicators that use the wind speed or the available wind power density. However, energy production must be a critical parameter in wind energy applications. Hence, a fitting method that accounts for the power density distribution is proposed. To highlight the usefulness of this method, indicators that use energy production values are also presented.

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Section: Open Accessmentioning

confidence: 99%

“…Several expressions can be used to represent the non-linear part of the power curve q(v) [12,33,34]; however, for the sake of simplicity, the cubic equation is typically used [32,35-37]: ( ) 3 …”

Section: Power Curvesmentioning

confidence: 99%

An Approach to Determine the Weibull Parameters for Wind Energy Analysis: The Case of Galicia (Spain)

et al. 2014

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“…FSWGs are modeled in PSCAD [32] by means of a dynamic model for the mechanical elements and a transient model for the generator and power network [33].…”

Section: Wind Generatormentioning

confidence: 99%

A STATCOM with Supercapacitors for Low-Voltage Ride-Through in Fixed-Speed Wind Turbines

Obando-Montaño¹,

Carrillo²,

Cidrás³

et al. 2014

Energies

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Fixed-speed wind generator (FSWG) technology has an important presence in countries where wind energy started to be developed more than a decade ago. This type of technology cannot be directly adapted to the grid codes, for example those requirements related to the immunity level under voltage dips. That behavior is typically referred as low-voltage ride through (LVRT), and it usually implies certain reactive and active power injection requirements, both during a voltage dip and during the voltage recovery. In this context, a review is presented of the LVRT exigencies present in some of the countries with the most advanced grid codes (Denmark, Germany, Spain and the United Kingdom). In this paper, the capabilities of STATCOM-based devices for fulfilling the LVRT requirements in FSWGs are analyzed. For this purpose, two technologies are considered: a STATCOM with a supercapacitor, which improves its energy storage features; and a STATCOM with a supercapacitor and a DC-DC converter, to achieve higher discharge levels.

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“…To reduce effects of the power fluctuation, different techniques can be applied. These techniques mainly consider the output power of the generator [9][10][11]. Several studies focus on the turbine/ generator control approaches to improve aerodynamic efficiency of the rotor and power quality of the generator [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Modeling of a Hydraulic Wind Power Transfer Utilizing a Proportional Valve

Deldar

Izadian

Vaezi

et al. 2015

IEEE Trans. on Ind. Applicat.

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Abstract-Hydraulic circuits can transfer remarkable amounts of energy in the desired direction without taking large space. To implement this technology for harvesting energy of wind appropriately, models of the system are required. Hydraulic wind power technology has the benefits of eliminating expensive and bulky variable ratio gearbox and its costly maintenance while enabling the integration of multiple wind turbines in a single generation unit. In this paper, the dynamics of different hydraulic elements are studied, nonlinearities are taken into account, pressure dynamics in different parts of the system are studied, and the motor load effects are considered. Based on these considerations, a novel non-linear state space representation of the system is introduced. Results of the mathematical model and the experimental data are compared to verify the proposed model. The comparison demonstrated that the mathematical model captures all major characteristics of the hydraulic circuit and can model the system behavior under different operating conditions.

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Power Fluctuations in an Isolated Wind Plant

Cited by 71 publications

References 3 publications

An Approach to Determine the Weibull Parameters for Wind Energy Analysis: The Case of Galicia (Spain)

An Approach to Determine the Weibull Parameters for Wind Energy Analysis: The Case of Galicia (Spain)

A STATCOM with Supercapacitors for Low-Voltage Ride-Through in Fixed-Speed Wind Turbines

Modeling of a Hydraulic Wind Power Transfer Utilizing a Proportional Valve

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