Wind Turbine Monitoring Articles
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At lofty heights: 3D Scan of a wind turbine blade
The maintenance of wind turbines, and whole wind farms, is a challenge. Normally wind turbines are designed to operate for 20 years. During these 20 years they are subjected to all kinds of weather conditions and heavy loads, but thanks to modern acquisition technology and advanced numerical models, such conditions can be addressed and even turned into increased annual energy production. To ...
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The Successful Wind Asset Management Services Playbook
Effective asset management has become a buzz word in wind. We talk about it a lot. We peer at it from various lenses. And we pick at it from dawn to dusk. We get it. As renewable energy developers, managers, and consultants, we want answers: what really makes for effective wind asset management services? Today, as we round up a decade of actively campaigning for renewable energy, onshore wind ...
By Powerhub
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10 Facts you didn’t know about Wind Energy
The oldest rotary windmills are considered to have been used regularly in agriculture and other purposes since 2000 B.C. by peoples of what would today be China and the Middle East who already sensed what the German physicist Albert Betz, the father of physics governing modern wind turbines, called The Theory of Wind Energy, presented and published in his book “Wind-Energie” at the ...
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Wind turbine technology leaps set to slice maintenance costs
Self-diagnosing turbines, real-time output maximization and “crane less” maintenance will soon impact wind operations, cutting labour costs and increasing generation revenue, Denver Bane, Onshore Wind Services Strategy Leader at GE Renewable Energy, told the Wind Operations Dallas 2019 conference. Intense competition in the wind market is spurring turbine developers to find new ...
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Diagnosing wear faults - High-throughput screening of wind-turbine gearbox samples using the LaserNet 230 and automatic sample processor (ASP).
The major issue for premature failure in wind-turbine gearboxes is bearing failure, which leads to gearbox failure. A wind-turbine gearbox will not survive if the oil is not clean and especially if the hard ferrous particles are not removed from around the bearings. The LaserNet 230 particle counter and ferrous debris monitor has been shown to be an excellent analytical tool for end users to ...
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Ultrasonic wind sensor for smart wind turbine control - Polaris / USA - Case Study
The American wind turbine manufacturer Polaris trusts for their wind turbine applications anemometers from Lufft. Over 50 wind turbines have already been equipped with our ultrasonic anemometers Ventus-UMB and V200A-UMB. Crucial in these applications is a high degree of precision and a long, maintenance-free useful life. In addition, controlling of the turbine complex requires a high frequency of ...
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Wind Energy Production Estimates: Moving Beyond Time Averages
No need to be a statistician to see that averages are often useful to compare different things. And yet, they often fall short as a true measure of performance. For instance, we use averages to compare the current weather against the climate normals or to get a sense of how our favorite sport team or player is doing. Team (player) statistics are a concise way of combining the scores from many ...
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Wind turbine controlling of the future
Higher, more robust, more reliable: Parallel to the growing requirements for wind turbines, the requirements for monitoring sensors grow as well. But how can wind sensor manufacturers fulfil these wishes? And how should a future wind sensors look like? After analysing the current conditions and trends on the wind energy market, our CEO Klaus Hirzel compiled a wish list for future wind sensors. ...
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Measuring Offshore Wind Resources
To select the right offshore wind site, estimate the future energy output of a wind farm, and determine the best layout for the turbines, project developers must conduct wind resource assessment (WRA) campaigns on site. This is a critical phase of the successful development of wind farms. WRA campaigns on terrestrial sites have traditionally been performed using meteorological towers equipped ...
By NRG Systems
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Power curve measured and verified – Case Study
In 2010 RSE SpA (Energy System Research Inc.) within a Program Agreement with the Italian Ministry of Economic Development started a measurement campaign on a Libellula wind plant installed in Tuscany. The campaign lasted 1 ½ years and during this time RSE measured the turbine’s power curve following the requirements of the relevant IEC Standard ( EN 61400-12-1 – EN 61400-2). ...
By Aria srl
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Monopiles to remain Dominant Offshore Foundation in Europe: Consultant
Monopiles will be Europe’s dominant offshore wind foundation for the next five years despite increasing turbine capacity, Tim Fischer, Head of Wind at German consultancy Ramboll, said. Monopile projects have dominated the offshore wind market but windfarms are moving towards larger turbines requiring larger foundations. While many proponents are promoting the value of jacket foundations ...
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DOE announces third round of START program
On February 25, 2015, the U.S. Department of Energy (DOE) announced the third round of Strategic Technical Assistance Response Team (START) Renewable Energy Project Development Assistance that provides tribal governments and entities with support to produce clean and renewable energy. The START program was launched in December 2011 and has helped 21 tribal communities advance solar, wind, ...
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Productivity of small wind turbines for various wind potentials conditions: application in Bulgaria and Corsica
Less or more accurate power curve models are generally used to simulate the wind turbine electrical production versus the available wind speed. However, if such models are adapted to large machines, this is not the case for small ones. The objective of this paper is to study the impact of different small-scale wind turbines power curves and wind distributions on the electrical production. An ...
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A combined electro-mechanical control technique for dynamic voltage regulation of a stand-alone wind turbine generator
This paper introduces a computer-based model and dynamic simulation of a combined electro-mechanical control technique for a stand-alone wind turbine generator system. The presented combined control technique consists of three closed loops for speed regulation, nacelle alignment and dynamic load voltage regulation. Speed regulation is achieved by adjusting the pitch angle of the turbine blades. ...
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The power coefficient of windmills in ideal conditions
The windmill efficiency, also designated as the power coefficient, is defined as the ratio of the actual power output to the power present in the free stream of a fluid flowing through the same cross-sectional area. There are remarks in the literature to the effect that the power coefficient of actual windmills is very close to the ideal power coefficient or Betz limit of 0.5926. In this paper, ...
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