A critical review of voltage and reactive power management of wind farms

Pathak, Abhinav; Sharma, Mahaveer P.; Bundele, Mahesh

doi:10.1016/j.rser.2015.06.015

Cited by 97 publications

(44 citation statements)

References 90 publications

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“…The RMS value E h and phase angle to be formed by the h th harmonic frequency at the reference voltage V rh generated from the combination of ω h . Harmonic frequency ω h from equation (13) can be combined to -m h n h from ω ht with adding the δ h , where ω t phase of the voltage reference. It does not depend on the impedance of the output voltage but may also include resistive, inductive, capacitive or complex.…”

Section: Control Methods In Microgridsmentioning

confidence: 99%

“…Voltage variations generally occur from changes in velocity of the wind and generator torque. The deviation of voltage is also affected the real and reactive power of the system [13]. The voltage variation is usually divided into four types which include voltage sag, voltage swell, short interruption and long duration voltage variation.…”

Section: A Voltage Variationsmentioning

confidence: 99%

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A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

Praiselin¹,

Edward²

2018

IJISA

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Abstract-Due to the global demand for energy saving and reduction of greenhouse gas emissions, utilization of renewable energy sources have increased in electricity networks. The negative aspects of this technology are very complex and not well known which affect reliability and robustness of the grids. Microgrids based on renewable energy sources have gained significant popularity, due to the major benefits it has to offer for solving the increasing energy demand. Harmonic distortion in microgrids caused by the non-linear loads is an essential topic of study necessary for the better understanding of power quality impacts in microgrids. The various control techniques utilized to curtail the power quality impacts on micro grids are reviewed in this paper. Also, Optimization based control techniques utilized for power quality improvement in microgrids is discussed in this review.

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Section: Control Methods In Microgridsmentioning

confidence: 99%

Section: A Voltage Variationsmentioning

confidence: 99%

A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

Praiselin¹,

Edward²

2018

IJISA

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“…Furthermore, extra reactive power resources like STATCOM, SVC, etc. are generally equipped for wind farms at the PCC to support voltage regulation [22].…”

Section: B Transition From Ig Mode To Dfig Modementioning

confidence: 99%

Deadband Control of Doubly-Fed Induction Generator Around Synchronous Speed

Tan

Muttaqi

Meegahapola³

et al. 2016

IEEE Trans. Energy Convers.

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Semiconductor devices in power electronic converters of the doubly-fed induction generator (DFIG) are susceptible to significant junction temperature variations when operating around synchronous speed, thereby reducing the lifetime of the converters. This is due to the fact that the frequency of the rotor current in a DFIG is determined by the stator flux frequency and rotor speed, and hence will lead to low rotor current frequency when operating closer to the synchronous speed, and ultimately result in significant thermal stress on semiconductor devices. In this paper, a multimode operation control strategy is proposed for the DFIG to prevent operating around the synchronous speed (within a predefined deadband); thus, the proposed control strategy can avoid the thermal stress problem. The proposed strategy engages the existing crowbar scheme for DFIG-based wind energy conversion system to intentionally alter the operating mode of the generator between DFIG and induction generator (IG). Smooth transition between the two operating modes can be achieved with the supplementary control strategies. Unity power factor can also be maintained in both operating modes by using the grid side converter as a static synchronous compensator (STATCOM) to fulfill the reactive power requirement of the DFIG in IG mode. Abstract-Semiconductor devices in power electronic converters of the doubly-fed induction generator (DFIG) are susceptible to significant junction temperature variations when operating around synchronous speed, thereby reducing the lifetime of the converters. This is due to the fact that the frequency of the rotor current in a DFIG is determined by the stator flux frequency and rotor speed, and hence will lead to low rotor current frequency when operating closer to the synchronous speed, and ultimately result in significant thermal stress on semiconductor devices. In this paper, a multimode operation control strategy is proposed for the DFIG to prevent operating around the synchronous speed (within a predefined deadband), thus the proposed control strategy can avoid the thermal stress problem. The proposed strategy engages the existing crowbar scheme for DFIG based WECS to intentionally alter the operating mode of the generator between DFIG and induction generator (IG). Smooth transition between the two operating modes can be achieved with the supplementary control strategies. Unity power factor can also be maintained in both operating modes by using the grid side converter as a static synchronous compensator (STATCOM) to fulfil the reactive power requirement of the DFIG in IG mode.Index Terms-Crowbar, doubly-fed induction generator (DFIG), multimode operation, synchronous speed, wind power, thermal analysis.

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“…The goal is not only to avoid emissions of CO 2 caused by the combustion of fossil fuels, but also to find a wide range of reliable renewable sources of electricity capable of satisfying the increasing global electricity demand and contributing to sustainable development. Wind power has become one of the most popular options for substituting fossil fuels, due to its competitive generation electrical fluctuations, harmonics, and flicker [15,16] are necessary. The harmonic effect modelling in wind induction generators is reported in [17,18], using the principles of generalised harmonic analysis and complex conductor distribution to develop a method for calculating circuit's self and mutual inductance for windings.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Modelling of the Wind Turbine Induction Generator for Dynamic Analysis of Power Quality

et al. 2018

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Abstract:Given the increasing integration of wind-based generation systems into the electric grid, efforts have been made to deal with the problem of power quality associated with the intermittent nature of these systems. This paper presents a new modelling approach oriented towards harmonic distortion analysis of the induction machine for wind power applications. The model is developed using companion harmonic circuit modelling, which is a natural approach for analysis of the adverse effects of harmonic distortion in electric power systems, and represents an easier solution method than the well known dynamic harmonic domain, since it solves algebraic equations instead of state-space differential equations. The structure of the companion circuits simplifies both the formulation and solution for power systems with wind-based generation systems. This approach is especially useful for analysis of the harmonic interaction in transient and steady states between the wind power generator and the power system, whose interconnection is made through electronic converters. The proposed model allows us to compute the dynamics of the wind turbine, which are influenced by disturbances such as changes in the wind velocity, voltage fluctuations, electric waveform distortion, and mechanical vibrations, among other factors. Moreover, the cross-coupling between harmonic components at different frequencies is considered. The proposed model represents an integral framework of the electrical and mechanical subsystems of a wind turbine, allowing for analysis of the interactions between them, and understanding power quality degradation behaviour as well as causes and consequences, while also giving useful information on the field of simulation and control. To test the performance of the proposed model, a test power system is used to obtain the behaviour of a wind turbine induction generator in response to typical power quality disturbances, i.e., harmonic distortion, and voltage sags and swells. Then, the dynamics of the variables considering their harmonic interactions are analysed.

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A critical review of voltage and reactive power management of wind farms

Cited by 97 publications

References 90 publications

A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

Deadband Control of Doubly-Fed Induction Generator Around Synchronous Speed

Harmonic Modelling of the Wind Turbine Induction Generator for Dynamic Analysis of Power Quality

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