نتایج جستجو برای: wind load

تعداد نتایج: 227639  

2008
Hannele Holttinen Michael Milligan Brendan Kirby Tom Acker Viktoria Neimane Tom Molinski

The variability inherent in wind power production will require increased flexibility in the power system, when a significant amount of load is covered with wind power. Standard deviation (σ) of variability in load and net load (load net of wind) has been used when estimating the effect of wind power on the short term reserves of the power system. This method is straightforward and easy to use w...

2015
Weifei Hu K. K. Choi Hyunkyoo Cho Nicholas J. Gaul Olesya I. Zhupanska

1. Abstract Conventional wind turbine blades have been designed using fatigue life predictions based on a fixed wind load distribution that does not fully capture uncertainty of the wind load. This could result in early fatigue failure of blades and eventually increase the maintenance cost of wind turbines. To produce reliable as well as economical wind turbine blades, this paper studies reliab...

Wind energy penetration in power system has been increased very fast and large amount of capitals invested for wind farms all around the world. Meanwhile, in power systems with wind turbine generators (WTGs), the value of Available transfer capability (ATC) is influenced by the probabilistic nature of the wind power. The Mont Carlo Simulation (MCS) is the most common method to model the uncerta...

2003
M. Milligan Michael Milligan

Because wind is an intermittent power source, the variability may have significant impacts on system operation. Some studies have shown that this impact on regulation is not significant, but the impact on load following requirements has not yet received much attention. Part of the difficulty of analyzing the load following impact of wind is the inadequacy of most modeling frameworks to accurate...

Journal: :international journal of advanced structural engineering 2011
veeranagouda b. patil

dynamic behavior of the wind-excited-benchmark-building using semi-active electromagnetic friction dampers (saemfds), with modulated homogeneous friction algorithm is presented. the performance of the benchmark building is studied under across wind loads by installing the saemfds with smooth boundary layer semi-active friction (sblsaf) algorithm. the governing equations of motion are solved by ...

Journal: :international journal of smart electrical engineering 2014
mahmood hosseini aliabadi shahram javadi ehsan tafehi amin bakhtiari

this study based on investigation for integration wind power into conventional power system with its impact on fossil fuel generators and their generation management. wind power as environmental friendly energy source can reduce the operational cost of the system due to considering no cost for energizing the generator in comparing with fossil fuel generators. however due to unpredictable nature...

2012
Anuradha S deshpande

Abstract Presented work has made an attempt to establish details of connectivity of Wind Farms with isolated installations. Paper has shown ACDC-AC connectivity of wind farm through Rectifier inverter to an AC load. Mat Lab simulation results of wind farm connectivity to an AC load of lumped type is done. Developed work has focussed on necessity of energy storage during high wind situations so ...

2015
Matthias J. Reiner Dirk Zimmer

The design of an advanced controller for wind turbine load mitigation is presented. The controller is based on Nonlinear Dynamic Inversion control methods combined with Pseudo Control Hedging to account for the actuator limits and a two degree of freedom control system for the collective pitch control of the rotor blades. The controller uses wind speed measurement information to adjust to wind ...

H. Akrami M. Lotfi Sh. Shojaeian,

Given the substitution process of generators using renewable energy sources instead of conventional generators in modern power systems, this paper proposes a Monte Carlo based method to determine an optimal level of this change. At first, LOLE index of the system was calculated without wind power to obtain the reference index. Then, the wind turbine units are replaced with the conventional gene...

2008
M. Muralikrishna V. Lakshminarayana

Hybrid power system can be used to reduce energy storage requirements. The influence of the Deficiency of Power Supply Probability (DPSP), Relative Excess Power Generated (REPG), Energy to Load Ratio (ELR), fraction of PV and wind energy, and coverage of PV and wind energy against the system size and performance were analyzed. The technical feasibility of PV-wind hybrid system in given range of...

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