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This paper presents the development of forecast models for a wind farm producibility with a 24 hours horizon. The aim is to obtain accurate wind power predictions by using feedforward artificial neural networks. In particular, different forecasting models are developed and for each of them the best architecture is researched by means of sensitivity analysis, modifying the main parameters of the artificial...
This paper presents a technique to improve the frequency response of a grid system having synchronous generators (steam and hydro types) and a fixed speed induction generator wind turbine. An embedded Low Pass Filter (LPF) in the DC chopper unit of an Energy Capacitor System (ECS) control toplogy was used to provide active and reactive power control to the grid network that is supplying heavy and...
The aim of this paper is to investigate the possibility of setting a wind farm in the region of Ksar-Chellala, which is located in the province of Tiaret at 260 km to the south of Algiers. For this purpose three-hourly wind data, recorded at 10m height over a period of thirteen years were processed and simulated using WAsP software. Annual, monthly, seasonal and daily wind characteristics were assessed...
This paper presents a method for primary evaluation of a wind farm based on the wind turbine Adaptability Coefficient. This coefficient is calculated according to economical criteria of wind turbines as well as their capability in power production through the site where the wind turbines will be installed. The data series of wind recorded from three different sites and characteristics of several types...
This paper proposes an optimal control strategy for participation of wind farms (WFs) in primary frequency control. In this strategy, we exploit wake interaction in a WF to maximise the total kinetic energy (KE) of the wind turbines' (WTs') rotating masses in the WF, and optimally deploy this KE after a frequency event to reduce the frequency nadir, by controlling the rate of change of the rotor speed...
Mitigation of wind turbine interference (WTI) requires modelling of its impact on radars, navigation systems and terrestrial radio links. A proper analysis of this interference by numerical field simulation, in particular including the effect of diffraction, requires a high computational effort as the problem is electrically extremely large. We propose a 2D Fresnel diffraction approach applied to...
Mitigation of the impact of wind turbine (WT) forward scattering on radars, navigation systems and terrestrial radio links requires accurate modelling and rapid calculation of diffraction of RF and microwave signals at the tower and rotor of WTs. A proper analysis by 3D numerical field simulation is very time consuming as the problem is electrically extremely large. We are using 2D Fresnel-Kirchhoff...
A lot of attention is being paid to wind energy due to the focus on renewable energy. Wind resource in Algeria varies from one location to another. Wind speed is better in terms of electricity generation, but There are many difficulties in ensuring higher quality power into the grid. The solution of these problems could be solved by FACTS devices in the system and particularly the STATCOM. Which uses...
the development of renewable energy, and more especially regarding wind turbines, may be blocked because of radar objections. Besides undeniable situations, there exist many cases where either the potential impact is not well known, or where a possible mitigation cannot be correctly assessed. In such situations, the precautionary principle prevails, and the project is rejected. This paper presents...
Radar doppler deviation caused by the time variant diffraction of the two-way signal at the rotating blades of a wind turbine (WT) is analyzed based on a one-dimensional Fresnel diffraction approach. In order to provide an insight into the degradation of the radar performance, time variant forward scatter path loss, phase shift and corresponding frequency shift are investigated.
The expanded integration of wind energy imposes technical challenges to maintain system reliability. In order to tackle these challenges, comprehensive reliability models for wind turbines and related factors are essential. Proposed algorithm classifies Wind Turbine Generator (WTG) components based on their impact on WTG output. There upon, the WTG has a composite three-state reliability model which...
As the share of wind energy in power system increases, consideration of these resources in power system planning, particularly in Transmission Expansion Planning (TEP) is becoming more and more important. In this paper, a Probabilistic Multi Objective Transmission Expansion Planning (PMO-TEP) is presented to find the optimal node for connecting the large-scale distant wind farm to the network from...
Coexistence of wind farms and terrestrial radio links require the investigation of suitable exclusion zones. A proper analysis of this interference including the effect of diffraction is very difficult by numerical field simulation as the problem is electrically extremely large. We propose and analyze a simple diffraction model for a wind turbine (WT) based on a one-dimensional Fresnel diffraction...
Performance of 2.25 MW wind farm at Devgarh in Pratapgarh district of Rajasthan was studied. Parameters of analysis were energy production, capacity factor, machine availability, grid availability, and system availability of three wind turbines installed at site. The data for year 2011, and 2012 of wind farm were used in calculations. The results of this study confirm that wind farm performance could...
Modeling and modifying wind energy conversion systems are becoming extremely attractive topics for scientists and engineers around the world. Assessing the potential of wind as a basic and indispensable part of wind farm establishment is also taken into consideration by many researchers. In this paper, we study the wind energy potentiality of Butterworth, Malaysia by comparing the wind power density...
This paper presents a new methodology for optimizing the wake effect performance and, therefore, the energy captured by the wind turbines in an offshore wind farm. The optimization is done by controlling the pitch angle and the tip speed ratio of each one of the wind turbines in order to minimize the overall wake effect between wind turbines and, as a consequence, maximize the power produced by the...
This paper presents a new methodology for optimizing the wake effect performance and, therefore, the energy captured by the wind turbines in an offshore wind farm. The optimization is done by controlling the pitch angle and the tip speed ratio of each one of the wind turbines in order to minimize the overall wake effect between wind turbines and, as a consequence, maximize the power produced by the...
Wind generation is the most increasing resource in the renewable energy. Now a days, the wind power has a large installed output power capacity in the world among the renewable energy sources. The wind power integration into power system grids has some effect on power system issues as transmission congestion, optimum power flow, system stability, power quality, system economics and load dispatch....
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