Enhanced Flicker Mitigation in DFIG-Based Distributed Generation of Wind Power

Ammar, Moataz; Ammar, Mohammed E.

doi:10.1109/tii.2016.2586461

Cited by 17 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To confirm the negative impact of bus voltage fluctuation on nearby consumers, the voltage flicker of multiple SWTs was analyzed. The voltage rise DV due to active and lagging reactive output power increments, DP and DQ, respectively, at the PCC of the small-scale WT generator was calculated as follows (Alaboudly et al, 2013;Ammar and Ammar, 2016;Hu et al, 2009) DV ffi where V is the voltage at the PCC and R + jX is the system impedance. In general, in a low-voltage distribution system, the resistance R is almost equal to or greater than the reactance X .…”

Section: Voltage Flickermentioning

confidence: 99%

“…Its main causes are abrupt changes in the power consumption of large-capacity loads (electrical arc furnaces, etc.) in the system (Alasooly and Redha, 2010;Blavette et al, 2016) and inrush current at the startup of induction machines (Chen et al, 2016;Leinonen and Laketic, 2018;Rahman et al, 2018), but it is recognized that severe output variation of wind power may also be another cause of voltage flicker (Ammar and Ammar, 2016). Thus, studies to analyze the voltage flicker caused by large-scale WTs have been conducted under numerical simulations (Alaboudly et al, 2013;Ammar and Ammar, 2016;Fooladi and Akbari Foroud, 2016;Hu et al, 2009;Mascarella et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Total output power variation of several small wind turbines

2020

View full text Add to dashboard Cite

There is a concern that connection of several small wind turbines may cause severe voltage fluctuation and voltage flicker in low-voltage distribution lines due to their output power variations. In this study, output power variations of four 5-kW-class small wind turbine systems were measured with an interval of 0.1 s at a site in Wakkanai, Hokkaido, and their correlations and smoothing effect in the frequency range from [Formula: see text] to 5 Hz were analyzed and compared with those of five residential photovoltaic power systems. The results indicate that a smoothing effect occurs more in small wind turbines than in photovoltaic systems, because of lower correlation coefficients in lower frequency ([Formula: see text] Hz) components. Voltage flicker at the point of common coupling was also measured and it was confirmed that the impact of small wind turbines on voltage flicker is low enough at the site. In addition, the upper limits of the installation number and/or the system resistance are estimated theoretically using the measured flicker values.

show abstract

Section: Voltage Flickermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Total output power variation of several small wind turbines

2020

View full text Add to dashboard Cite

show abstract

“…Besides, there is no gearbox system because of its low rotational speed. Therefore, no careful and regular maintenance is required in this wind turbine topology, unlike the DFIG‐based wind turbine 3 . In addition, the converters have room for flexible control of active and reactive dissipation of power in normal and transient states 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance of PMSG wind turbines during grid disturbance at different network strengths considering fault current limiter

Okedu

Muyeen

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary With the recent proliferation and penetration of wind farms into existing power grids, it is paramount to conduct numerous studies to counter grid disturbances based on operational grid codes. One of the ways of generating electric power from wind energy is by employing the promising technology of the permanent magnet synchronous generator (PMSG) wind turbine. In order to solve the transient stability intricacies posed by the stochastic nature of wind energy during grid faults, this paper proposes a fault current limiter for a PMSG‐based wind turbine control. The fault current limiter used in this study is a series dynamic braking resistor (SDBR). The best location to place the SDBR on the machine‐side and grid‐side converters (GSCs) of the wind generator was investigated, considering the grid voltage as its switching signal during transient state. Efforts have been given to find a suitable sizing of the SDBR. The performance of the SDBR has been investigated at various network strengths in weak and strong grids. A severe three‐line‐to‐ground fault and asymmetrical faults were used to test the robustness and rigidity of the controllers of the wind generator. The system performance was evaluated using power system computer aided design and electromagnetic transient including DC (PSCAD/EMTDC) platform. The same conditions of operation were used in investigating the various scenarios considered in this study, for effective comparison.

show abstract

“…This concern is because of the outstanding features they offer, including higher power capture and less mechanical stress [3,4]. Different classes of electric machines are presently employed in the variable-speed WTGSs [5][6][7][8][9][10]. Among all available types, permanent-magnet synchronous generators (PMSGs)-based WTGSs are the most efficient, favourable, and commercial machines used in the wind power generation systems because of their salient characteristics, such as the relatively small size with respect to their power ratings, the high-power density, the self-excitation, and the high power factor operation [8].…”

Section: Introductionmentioning

confidence: 99%

Symbiotic organisms search algorithm‐based optimal control strategy for efficient operation of variable‐speed wind generators

Soliman

Hasanien

Alghuwainem

et al. 2019

IET Renewable Power Generation

View full text Add to dashboard Cite

The penetration rate of grid-tied wind turbine generator systems (WTGSs) into the existing electricity networks is rapidly increasing worldwide. Huge efforts are exerted for improving the characteristics of variable-speed wind energy conversion systems. This study exhibits a novel symbiotic organisms search algorithm (SOSA)-based optimal control strategy for achieving efficient operation of a grid-connected WTGS. The optimal control strategy relies on proportional-integral (PI) controllers, which are properly fine-tuned using the SOSA. The simulation-based optimisation method is considered in the optimisation process, where the integration of the square error criterion is selected as a fitness function. To obtain realistic performances, practical wind speed data extracted from the Zaafarana power plant in Egypt are used in the analyses. The efficacy of the SOSA-based optimal PI control strategy is compared with that realized using the grey wolf optimiser algorithm (GWOA)-based PI control scheme, considering network disturbances. The feasibility of the proposed control strategy is validated using the simulation studies, which are implemented using MATLAB/Simulink software. Notably, the proposed SOSAbased optimal control strategy is considered to be a precise means of improving the behaviour of grid-tied WTGSs.

show abstract

Enhanced Flicker Mitigation in DFIG-Based Distributed Generation of Wind Power

Cited by 17 publications

References 20 publications

Total output power variation of several small wind turbines

Total output power variation of several small wind turbines

Enhanced performance of PMSG wind turbines during grid disturbance at different network strengths considering fault current limiter

Symbiotic organisms search algorithm‐based optimal control strategy for efficient operation of variable‐speed wind generators

Contact Info

Product

Resources

About