Capability curve based enhanced reactive power control strategy for stability enhancement and network voltage management

Meegahapola, Lasantha; Littler, Timothy; Perera, Sarath

doi:10.1016/j.ijepes.2013.03.036

Cited by 29 publications

(15 citation statements)

References 21 publications

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“…Being these machines replaced by variable speed wind turbines such as the permanent magnet synchronous generator (PMSG), the doubly fed induction generator (DFIG) and the full-converter wind generator (FCWG). The capacities to control both active and reactive powers, coupled with low-voltage ride-through (LVRT) and fault ride-through (FRT), are the main reasons for the intensification of the adoption of power electronicsbased turbines (Meegahapola et al 2013).…”

Section: Evolution Of Wind Turbine Technologiesmentioning

confidence: 99%

“…Nowadays, due to the growing importance of wind farms in the electric power generation matrix in many countries, and especially in Brazil, it is fundamental to deepen the studies about their behavior during possible disturbances in the grid and, as one of the objectives of this paper, how the coupling of wind farms to the electrical system can contribute to mitigate voltage stability problems. Several studies have proposed the use of reactive power generation capacity of wind farms to improve the transient stability of the power system (PES) for the improvement in fault ride-through (FRT) to reduce losses of the system and to attenuate the voltage fluctuations (Abdelrahem and Kennel 2016;Meegahapola et al 2010Meegahapola et al , 2013Konopinski et al 2009). In this context, the main contribution of this paper, compared with these studies, is a proposal of a voltage preventive control using the resources of reactive power generation of the wind farms.…”

Section: Introductionmentioning

confidence: 99%

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Loading Margin Sensitivity in Relation to the Wind Farm Generation Power Factor for Voltage Preventive Control

Silva

Kuiava

2019

J Control Autom Electr Syst

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Due to the growing importance of wind farms in the electric power generation matrix in many countries, for example, in Brazil, this paper proposes voltage preventive control actions as an activity to support the programming of the operation of the electric system, based on the ranking of wind power units that most significantly impact the system's loading margin through the control of its power factor. A sensitivity index is proposed to obtain this ranking, whose mathematical formulation is based on a linear approximation of the power balance equations in the vicinity of the maximum loading point. The system used to test this proposal is a 56-bus system prepared with current real data from the Northeast subsystem of the National Interconnected System of Brazil that includes 22 wind farms with 234 wind turbines, which comprise a total of 600 MW of installed capacity. The results obtained for the 56-bus test system show the applicability of the proposed voltage preventive control actions by indicating the wind farms that can contribute most significantly to the increase in the system's loading margin from an adequate adjustment of the power factor of these units.

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Section: Evolution Of Wind Turbine Technologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Loading Margin Sensitivity in Relation to the Wind Farm Generation Power Factor for Voltage Preventive Control

Silva

Kuiava

2019

J Control Autom Electr Syst

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“…Reactive power capability of WPPs have also been applied for voltage stability studies. Dynamic voltage stability studies incorporating capability curves have been done by Meegahapola et al [16]. Londero et al [17] and Amarasekara et al [18] have considered WT capability curves to analyze the long-term voltage stability of a power system with wind power generation.…”

Section: Introductionmentioning

confidence: 99%

Reactive Power Capability Model of Wind Power Plant Using Aggregated Wind Power Collection System

et al. 2019

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This article presents the development of a reactive power capability model for a wind power plant (WPP) based on an aggregated wind power collection system. The voltage and active power dependent reactive power capability are thus calculated by using aggregated WPP collection system parameters and considering losses in the WPP collection system. The strength of this proposed reactive power capability model is that it not only requires less parameters and substantially less computational time compared to typical detailed models of WPPs, but it also provides an accurate estimation of the available reactive power. The proposed model is based on a set of analytical equations which represent converter voltage and current limitations. Aggregated impedance and susceptance of the WPP collection system are also included in the analytical equations, thereby incorporating losses in the collection system in the WPP reactive power capability calculation. The proposed WPP reactive power capability model is compared to available methodologies from literature and for different WPP topologies, namely, Horns Rev 2 WPP and Burbo Bank WPP. Performance of the proposed model is assessed and discussed by means of simulations of various case studies demonstrating that the error between the calculated reactive power using the proposed model and the detailed model is below 4% as compared to an 11% error in the available method from literature. The efficacy of the proposed method is further exemplified through an application of the proposed method in power system integration studies. The article provides new insights and better understanding of the WPPs’ limits to deliver reactive power support that can be used for power system stability assessment, particularly long-term voltage stability.

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“…The wind energy is currently one form of renewable energy, reproducible, potentially present and has a free pollution characteristic against the traditional energy sources. In addition, with technology progress, the cost of the wind energy has been reduced according to the motivations and the adoptions of financing for renewable energy installations since the last decade [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Collaboration of Nonlinear Control Strategy and Pitch Angle Control of DFIG Equipped Wind Turbine during all Operating Regions

Reddak¹,

Berdai²,

Nouaiti³

et al. 2018

IJCA

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Wind energy has marked in these last decades a great growth view its interest that present. But this energy is entirely dependent on the wind flow which is random and uncertain in the nature, and which can exceed the rated wind speed. So, the wind turbine must be protected against mechanical overload and possible risk of damages. In this paper, a control strategy of wind turbine equipped with the doubly fed induction generator DFIG is proposed for different wind regions. The interest of this control strategy is to extract the maximum power at wind speed below the rated value. Otherwise its objective is to protect the wind turbine and maintain the active power when the wind speed is above the rated value. To achieve a fast response of active and reactive powers that are controlled by the rotor currents, a nonlinear control based on the backstepping strategy is suggested. The simulation results reveal a better tracking of the references, and exploitation of the wind turbine in different wind regions.

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Capability curve based enhanced reactive power control strategy for stability enhancement and network voltage management

Cited by 29 publications

References 21 publications

Loading Margin Sensitivity in Relation to the Wind Farm Generation Power Factor for Voltage Preventive Control

Loading Margin Sensitivity in Relation to the Wind Farm Generation Power Factor for Voltage Preventive Control

Reactive Power Capability Model of Wind Power Plant Using Aggregated Wind Power Collection System

Collaboration of Nonlinear Control Strategy and Pitch Angle Control of DFIG Equipped Wind Turbine during all Operating Regions

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