نتایج جستجو برای: wind farms

تعداد نتایج: 103651  

2010
Eric D. Stoutenburg Nicholas Jenkins Mark Z. Jacobson

The electric power generation of co-located offshore wind turbines and wave energy converters along the California coast is investigated. Meteorological wind and wave data from the National Buoy Data Center were used to estimate the hourly power output from offshore wind turbines and wave energy converters at the sites of the buoys. The data set from 12 buoys consists of over 1,000,000 h of sim...

2006
Nils Siebert George Kariniotakis

Short-term wind power forecasting is recognized today as a major requirement for a secure and economic integration of wind generation in power systems. This paper deals with the case of regional forecasting of wind power with a large number of wind farms involved. Due to the large amount of potentially available information and also because part of the wind farms may not be "observable", foreca...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Somnath Baidya Roy Justin J Traiteur

Utility-scale large wind farms are rapidly growing in size and numbers all over the world. Data from a meteorological field campaign show that such wind farms can significantly affect near-surface air temperatures. These effects result from enhanced vertical mixing due to turbulence generated by wind turbine rotors. The impacts of wind farms on local weather can be minimized by changing rotor d...

2013
Simon Chapman Alexis St. George Karen Waller Vince Cakic

BACKGROUND AND OBJECTIVES With often florid allegations about health problems arising from wind turbine exposure now widespread, nocebo effects potentially confound any future investigation of turbine health impact. Historical audits of health complaints are therefore important. We test 4 hypotheses relevant to psychogenic explanations of the variable timing and distribution of health and noise...

2011
John O. Dabiri

Modern wind farms comprised of horizontal-axis wind turbines (HAWTs) require significant land resources to separate each wind turbine from the adjacent turbine wakes. This aerodynamic constraint limits the amount of power that can be extracted from a given wind farm footprint. The resulting inefficiency of HAWT farms is currently compensated by using taller wind turbines to access greater wind ...

2014
M. Manohara

In recent years the amount of electricity produced from wind has grown rapidly. Offshore wind farm is currently seen as a promising solution to satisfy the growing demand for renewable energy source. The main reasons for the rapid development of offshore wind farms includes much better wind resources and smaller environmental impact. However, the current state of the offshore wind farms present...

2006
CRISTINA L. ARCHER MARK Z. JACOBSON

Wind is the world’s fastest growing electric energy source. Because it is intermittent, though, wind is not used to supply baseload electric power today. Interconnecting wind farms through the transmission grid is a simple and effective way of reducing deliverable wind power swings caused by wind intermittency. As more farms are interconnected in an array, wind speed correlation among sites dec...

2003
James Cheng David Lubitz Bruce R. White

An atmospheric boundary layer wind tunnel was used to survey the variation in local wind conditions over a region of the Altamont Pass, California, containing two wind farms. Meteorological data combined with the wind tunnel results were used to predict the power output of the wind farms every half hour over a oneyear period from July 2001 to June 2002. It was observed that the power production...

Journal: :international journal of smart electrical engineering 2013
shohreh monshizadeh mahmoud reza haghifam ali akhavein

a wind farm is a collection of wind turbines built in an area to provide electricity. wind power is a renewable energy resource and an alternative to non-renewable fossil fuels. in this paper impact of wind farms in power system reliability is investigate and a new procedure for reliability assessment of wind farms in hl1 level is proposed. in proposed procedure, application of fuzzy – markov f...

Journal: :Annals of agricultural and environmental medicine : AAEM 2012
Bożena Mroczek Donata Kurpas Beata Karakiewicz

BACKGROUND The quality of life has three main characteristics: it always refers to the living conditions of an individual; it is measured both with subjective and objective indicators; and it is a multidimensional concept. AIM OF THE STUDY To assess how the quality of life is affected by the close proximity of wind farms. MATERIAL AND METHODS The study group consisted of 1,277 Polish adults...

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