Results 91 to 100 of about 11,284,963 (300)
High-resolution CFD modelling of Lillgrund Wind farm [PDF]
, 2013 We report on a fully dynamic simulation of Vattenfall’s Lillgrund offshore Wind Farm, with a focus on the wake effects of turbines on the performance of individual turbines, and of the farm as a whole.The model uses a dynamic representation of a wind ...
Creech, Angus +5 more
core +1 more source
Are dairy cows replaced too early? Evidence from a structural model and cow‐level data
American Journal of Agricultural Economics, EarlyView.Abstract In past analyses of animal replacement decisions, studies have claimed that dairy farms often replace dairy cows too early to be maximizing profits. I estimate a structural model of asset replacement to determine the motives behind early replacement of dairy cows.
Jared P. Hutchins
wiley +1 more source
Distribution Strategy of Wind Farm Active Power and Its Implementation
Kongzhi Yu Xinxi Jishu, 2013 Currently, average distribution is generally adopted for the active power control instruction of wind farms. If the wind speed differs much among wind turbines in the wind farm, the output active power of the wind farm may as well differ much from the ...
HU Kaikai +4 more
doaj
American Journal of Community Psychology, EarlyView.Abstract This article examines the psychological effects of migration detention in the European Union's Closed Controlled Access Center (CCAC) on Samos through an ecological lens. It explores a double normalization of suffering: the brutalization of necropolitical migration governance and the simultaneous understanding of resulting distress as an ...
Julia Manek
wiley +1 more source
Active Frequency Support Control Strategy for Wind Farm Considering the Energy Discrepancy of Wind Turbines [PDF]
Dianli jianshe[Objective] Wind turbine generators generally operate in maximum power point tracking （MPPT） mode and do not provide inertial response and frequency support to the power grid.
LI Fengneng, YANG Ping, WEI Zhichu, CHEN Wenhao, ZHOU Qianyufan, WAN Siyang
doaj +1 more source
Active Power Control of Waked Wind Farms
IFAC-PapersOnLine, 2017 Active power control can be used to balance the total power generated by wind farms with the power consumed on the electricity grid. With the increasing penetration levels of wind energy, there is an increasing need for this ancillary service. In this paper, we show that the tracking of a certain power reference signal provided by the transmission ...
van Wingerden, J.W. (author) +3 more
openaire +2 more sources
Anemos-ity, apatheia, enthousiasmos: An economic sociology of law and wind farm development in Cyprus. [PDF]
, 2013 This piece sketches 'an' economic sociology of law: one possible approach, in relation to one case study of wind farm development in Cyprus. Carbon emissions are a global threat to which wind farms may offer something of a solution.
Amanda Perry‐Kessaris +1 more
core +1 more source
The Anatomical Record, EarlyView.Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo +5 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro +10 more
wiley +1 more source
Integer programming for optimal yaw control of wind farms [PDF]
Wind Energy ScienceIt is well-known that wakes caused by wind turbines within a wind farm negatively impact the power generation and mechanical load of downstream turbines. This is already partially considered in the farm layout.
F. Bestehorn +6 more
doaj +1 more source