Prospects for generating electricity by large onshore and offshore wind farms

Video thumbnail (Frame 0) Video thumbnail (Frame 536) Video thumbnail (Frame 628) Video thumbnail (Frame 718) Video thumbnail (Frame 1112) Video thumbnail (Frame 1622) Video thumbnail (Frame 1831) Video thumbnail (Frame 5522)
Video in TIB AV-Portal: Prospects for generating electricity by large onshore and offshore wind farms

Formal Metadata

Title
Prospects for generating electricity by large onshore and offshore wind farms
Title of Series
Author
License
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers
Publisher
Release Date
2017
Language
English

Content Metadata

Subject Area
Abstract
The decarbonisation of energy sources requires additional investments in renewable technologies, including the installation of onshore and offshore wind farms. For wind energy to remain competitive, wind farms must continue to provide low-cost power even when covering larger areas. Inside very large wind farms, winds can decrease considerably from their free-stream values to a point where an equilibrium wind speed is reached. The magnitude of this equilibrium wind speed is primarily dependent on the balance between turbine drag force and the downward momentum influx from above the wind farm. We have simulated for neutral atmospheric conditions, the wind speed field inside different wind farms that range from small (25 km2) to very large (105 km2) in three regions with distinct wind speed and roughness conditions. Our results show that the power density of very large wind farms depends on the local free-stream wind speed, the surface characteristics, and the turbine density. In onshore regions with moderate winds the power density of very large wind farms reaches 1 W m−2, whereas in offshore regions with very strong winds it exceeds 3 W m−2. Despite a relatively low power density, onshore regions with moderate winds offer potential locations for very large wind farms. In offshore regions, clusters of smaller wind farms are generally preferable; under very strong winds also very large offshore wind farms become efficient.

Related Material

Noise reduction Effects unit Video Electric power distribution Key (engineering) Electricity Power (physics) Wind farm Electricity Last
Weather forecasting
Measurement Power (physics) Wind farm Model building Last
Density Sizing Nanotechnology Power (physics) Flight simulator Wind farm Model building
Weight Effects unit Wind power Relative articulation Month Nanotechnology Engine Wind farm Reference work Typesetting Winter Key (engineering) Power (physics) Schiffsdampfturbine Mixing (process engineering) Baumgrenze Wind power Density Sizing Atomism Narrow gauge railway Flugbahn Noise figure Week Wind farm Last
Density Field strength Bomb Power (physics) Wind farm Energy level
in this study we investigated prospects of generating electricity by the very last onshore and offshore wind farms the purpose is to understand how the way effects reduce the power reduction in these last whenever previous studies by analyzing keys
in 2013 and Miller et
al in 2000 15 similar with a regional weather forecast
model power-density as the
power per unit area of different high affinity hypothetical last farms integrated but it's these studies concluded concluded that power-density of these very last
have they even when France would be limited to gone what square to limit implies that the power density of very rough we've is only 20 5 % of topology of current when thoughts we have used a wall model to
simulate energy production from wind farms different size and different wide spacing of tree regions
1st let's look at the onshore regions with only moderate whence in this figure its actions is the referent power density that is in production without waste what during the wintertime and determine Paul the Y axis is the actual power density which includes the effect of weights here the pollen city so limited to 1 what square meter agreeing with atoms in keys now let's compare this to a region stronger wins like in all cities here the result shows that our entity reaches almost to what square thirdly when when is a very strong such as an offshore Patagonia that engine power entity can reach up to 3 comma decimal 5 what was going on and for very last winter months more relevant for the wind energy community is to discuss the windfall efficiency tree lines of different turbines spacings narrow intermediate and what in the region with moderate winds very last wind farms wide spacing remain efficient that is about 70 per cent in region these corresponding to the Aussie time strong winds leads to an efficiency of 70 per cent for all types small in advance as illustrated by a certain simply because of the strong winds how the slope of the efficiency with which font size is steeper than in the great plains this is due to the low those offshore and therefore less mixing and more persistent wait wait effects finally in offshore regions with a very strong when it's small or advance become extremely efficient also last wind farms remain efficient if the jury was basing his wife the course of 2 strong winds and i've Germans enhancing the mixing and decreasing week to summarize we
find that the power density of very large when bombs is not limited to 1 what was worried in regions strong where is it can be more than tree 1 5 times higher even for very large with and when advanced performance depends on the strength of the winds and under driven as level as well as undetermined spacing and a wind farm sites
Feedback