wind assessment Articles
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Further considerations on WAsP, OpenWind and WindSim comparison study: Atmospheric flow modelling over complex terrain and energy production estimate
This paper analyses Brazil’s most used wind assessment computational tools: WindSim, OpenWind and Wind Atlas Analysis and Application Program (WAsP). Each program produced a Wind Resource Grid (WRG) data base – through different methodologies – utilizing the same 5 anemometric towers, elevation grid and roughness map to generate it. The turbine layout was kept the same during all simulations and ...
By VIE Brazil
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Atmospheric stability in wind resource assessment: Development of a new tool for an accurate wind profile estimate
The main objective of this paper is to investigate some key issues related to the atmospheric stability for the development of wind power projects, aiming to contribute to increase the reliability of this source and its safe insertion into the energy matrix. It is also important to note that the techniques and methodologies to be described were conceived taking into consideration one main ...
By VIE Brazil
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Wind modelling based on wind input data conditions using Weibull distribution
Weibull distribution can be used to model the wind speed distribution at a particular site and hence, it can help in wind resource assessment (WRA) of a site. By calculating the shape (k) and scale (c) parameters for Weibull distribution, the wind speed frequency curve for a site can be made. Once this wind speed distribution for site is determined, it can be convolved with the power curve for a ...
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Project - Offshore WTG Partial Discharge Monitoring
Objectives The purpose of this trial would be to validate the feasibility of monitoring PD in wind turbine transformers, and determine and solve any additional factors unique to the wind turbine transformer. Assessment of the practicality of fitting internal RF sensors to windfarm transformers. Identify the factors impacting on ability to measure and the reliability of data ...
By Elimpus Ltd.
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Wind resource assessment using numerical weather prediction models and multi–criteria decision making technique: case study (Masirah Island, Oman)
The Authority for Electricity Regulation in Oman has recently announced the implementation of a 500 kW wind farm pilot project in Masirah Island. Detailed wind resource assessment is then required to identify the most suitable location for this project. This paper presents wind resource assessment using nested ensemble numerical weather prediction (NWP) model's approach at 2.8 km resolution and ...
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Radar remote sensing of wind-driven land degradation processes in northeastern Patagonia
Received for publication February 27, 2009. Wind-driven land degradation negatively impacts on rangeland production and infrastructure in the Valdes Peninsula, northeastern Patagonia. The Valdes Peninsula has the most noticeable dunefields of the Patagonian drylands. Wind erosion has been assessed at different scales in this region, but often with limited data. In general, terrain features caused ...
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Regulatory models for environmental impact assessments in Hungary
This paper describes the methodology and input requirements of environmental impact assessments regulated in Hungary by national standards for more than 10 years. The main characteristics are (a) various models simulate the impact of point, multi-source, line and area sources on local, urban and regional scales, (b) design transmission matrices are readily available for the greater part of the ...
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Case study - Weather data for nautical information system
In Lemwerder, Germany at the Weser River, wind direction and speed are measured and transferred in 60 second intervals via the OTT netDL 1000. The data is transmitted, wireless, over a distance of 600 meters to the radar tower in Ritzenbuettel, where it is integrated into the ship traffic network - the Authority for Water and Navigation (WSA), Bremen. The WSA is also responsible for monitoring ...
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Modeling Dispersion from Toxic Gas Released after a Train Collision in Graniteville, SC
ABSTRACT The Savannah River National Laboratory (SRNL) Weather Information and Display System was used to provide meteorological and atmospheric modeling/consequence assessment support to state and local agencies after the collision of two Norfolk Southern freight trains on the morning of January 6, 2005. This collision resulted in the release of several toxic chemicals to the environment, ...
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Operational short-range analytical air pollution modelling
Operational models that use solutions of the advection-diffusion equation based on more realistic assumptions than that of homogeneous wind and eddy diffusivity coefficients are presented. In particular, these solutions accept that wind and eddy diffusivity profiles are power functions of the height. Moreover, a practical short-range model evaluating ground-level concentrations from elevated ...
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Simulation of atmospheric dispersion in the convective boundary layer: comparison between two Lagrangian particle models
The results obtained in convective boundary layer dispersion by two Lagrangian particle models (according to Thomson's 1984 and 1987 papers) are compared. First, the sensitivity of the two models in accounting for the third-order moment of vertical wind speed fluctuations has been assessed, considering homogeneous non-Gaussian turbulence. Then, the ability of the two models to simulate the ...
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Real-time tracking of accidental atmospheric releases: LOSTRAC software
The LOSTRAC software is devoted to real-time tracking of accidental atmospheric releases. It allows one to calculate, within a few minutes from the moment when the accident is reported and localised, displacement and diffusion of atmospheric pollution. It also provides short-term evolution forecasting. It should become one of the tools for assisting the authorities in charge of safety operations ...
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Prevention of outage major downtime
Sulzer Dowding & Mills uses a range of condition-monitoring methods to assess the status of motors and generators to prevent the customer from major downtime and lost production. One of the most common root causes of failure of rotating electrical machines is bearing failure; but the failure mode that has the greatest impact, with regards to downtime and lost production, is failure of the ...
By Sulzer Ltd.
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Applicability Assessment of Coherent Doppler Wind LiDAR for Monitoring during Dusty Weather at the Northern Edge of the Tibetan Plateau
Abstract: Wind profile light detection and ranging (LiDAR) is an important tool for observing features within the atmospheric boundary layer. Observations of the wind field and boundary layer height from coherent Doppler wind LiDARs (CDWLs) under sandy and dusty weather conditions were evaluated using observations from two CDWLs and one GTS radio sounding located at the northern edge of the ...
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4 Red Flags in an Environmental Management System Audit
Is your environmental management system working for you or are you working for it? An all-too-common approach to running an environmental management system (EMS) is a procedural, documentation-oriented approach where the mere existence of EMS procedures makes an organization falsely believe they have an effective program. In fact, this procedural-documentation approach often does little more ...
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Types of weather sensors
Introduction to weather instruments Our weather sensors provide accurate and reliable weather data for a wide range of applications. With advanced iot sensors and wireless connectivity, it provides the necessary information for weather forecasting, agricultural planning, outdoor safety, and research. Keep in touch with the weather station. Accurate weather forecasting plays a crucial role in ...
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Monitoring network for Scottish ports - Case Studies
Historically, ferry masters operating off the west coast of Scotland would have to sail to a port and on arrival visually assess the weather and tide conditions before deciding whether safe berthing alongside the pier or quayside would be possible. This wastes time and fuel, and can causes immense frustration among passengers, who may see ferries come close to a port, but thereafter depart ...
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