Impacts of Wind Farms on Power System Stability

Abo‐Khalil, Ahmed G.

doi:10.5772/55090

Cited by 14 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using distances x 1 = 225 mm, x 2 = 237 mm (frequency range of 22-38 kHz, ∆x/λ = 0.3) and x 1 = 225 mm and x 2 = 231 mm (frequency range of 57-64 kHz, ∆x/λ = 0.3) of the A 0 mode, the two segments of the dispersion curves were reconstructed. The comparison of the results with 2D-FFT algorithm based on peaks of spectrum magnitude was performed, the mean relative error δ c ph = 1.3% for first reconstructed range (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38) and δ c ph = 0.3% for second range (57-64 kHz) was determined. The total mean relative error δ c ph = 0.8% was calculated.…”

Section: Discussionmentioning

confidence: 99%

“…The second selected sample is the WTB. Wind energy is said to be one of the most basic energy sustainability alternatives, therefore, the world is moving rapidly towards renewable energy, and the number of wind farms is constantly growing [28][29][30]. However, with the increasing number of wind farms, the world is facing an ever-increasing number of turbine blades being ejected [31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reconstruction of Lamb Wave Dispersion Curves in Different Objects Using Signals Measured at Two Different Distances

2021

View full text Add to dashboard Cite

The possibilities of an effective method of two adjacent signals are investigated for the evaluation of Lamb waves phase velocity dispersion in objects of different types, namely polyvinyl chloride (PVC) film and wind turbine blade (WTB). A new algorithm based on peaks of spectrum magnitude is presented and used for the comparison of the results. To use the presented method, the wavelength-dependent parameter is proposed to determine the optimal distance range, which is necessary in selecting two signals for analysis. It is determined that, in the range of 0.17–0.5 wavelength where δcph is not higher than 5%, it is appropriate to use in the case of an A0 mode in PVC film sample. The smallest error of 1.2%, in the distance greater than 1.5 wavelengths, is obtained in the case of the S0 mode. Using the method of two signals analysis for PVC sample, the phase velocity dispersion curve of the A0 mode is reconstructed using selected distances x1 = 70 mm and x2 = 70.5 mm between two spatial positions of a receiving transducer with a mean relative error δcph=2.8%, and for S0 mode, x1 = 61 mm and x2 = 79.7 mm with δcph=0.99%. In the case of the WTB sample, the range of 0.1–0.39 wavelength, where δcph is not higher than 3%, is determined as the optimal distance range between two adjacent signals. The phase velocity dispersion curve of the A0 mode is reconstructed in two frequency ranges: first, using selected distances x1 = 225 mm and x2 = 231 mm with mean relative error δcph=0.3%; and second, x1 = 225 mm and x2 = 237 mm with δcph=1.3%.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reconstruction of Lamb Wave Dispersion Curves in Different Objects Using Signals Measured at Two Different Distances

2021

View full text Add to dashboard Cite

show abstract

“…Following a disturbance in the system (e.g. loss of generator), type I-II wind turbine generators which are directly connected to the grid, release the stored kinetic rotational energy in the generator, blades and gearbox [8], limiting change of rotor speed caused by the variation of system frequency [9]. Type III-IV wind turbine generators are instead not capable of this, since the frequency converter, decouples the turbine rotor speed from grid frequency [7].…”

Section: Introductionmentioning

confidence: 99%

Allocation of synchronous condensers for restoration of system short-circuit power

Marrazi

Yang

Weinreich-Jensen

2017

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

Modern power systems, employing an increasing number of converter-based renewable energy sources (RES) and decreasing the usage of conventional power plants, are leading to lower levels of short-circuit power and rotational inertia. A solution to this is the employment of synchronous condensers in the grid, in order to provide sufficient short-circuit power. This results in the increase of the short-circuit ratio (SCR) at transmission system busbars serving as points of interconnection (POI) to renewable generation. Evaluation of the required capacity and grid-location of the synchronous condensers, is inherently a mixed integer nonlinear optimization problem, which could not be done on manual basis considering each type of machine and all bus-bars. This study therefore proposes a method of optimal allocation of synchronous condensers in a hypothetic future scenario of a transmission system fed by renewable generation. Total cost of synchronous condenser installations in the system is minimized and the SCRs at the POIs of central renewable power plants are strengthened. The method has potential for application on larger grids, aiding grid-integration of RES.

show abstract

Advantageous positioning of wind turbine generating system in MV distribution network

Fandi

Igbinovia

Švec

et al. 2016

2016 17th International Scientific Conference on Electric Power Engineering (EPE)

View full text Add to dashboard Cite

Impacts of Wind Farms on Power System Stability

Cited by 14 publications

References 22 publications

Reconstruction of Lamb Wave Dispersion Curves in Different Objects Using Signals Measured at Two Different Distances

Reconstruction of Lamb Wave Dispersion Curves in Different Objects Using Signals Measured at Two Different Distances

Allocation of synchronous condensers for restoration of system short-circuit power

Advantageous positioning of wind turbine generating system in MV distribution network

Contact Info

Product

Resources

About