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Seasonal Predictions for Wind Energy

Anticipating Quarterly Winds and Revenues One Month Ahead

BSC Figure1The wind power industry has traditionally used fixed climatologies for anticipating wind speed and wind generation beyond 15 days ahead. However, wind is highly variable at monthly and seasonal scales, and anomalies occur around the globe every now and then. Assuming that future conditions will be similar to average past conditions has several inherent shortcomings. Recent advances in dynamical modelling systems have opened new opportunities for seasonal prediction of wind speed that can improve current practices. Ensemble ocean–atmosphere numerical simulations can provide meaningful forecasts that indicate the probability of having above-normal, normal or below-normal wind conditions in the next season with one month of advance warning. Through an analysis of some case studies we will explore in this article how seasonal predictions of wind speed and generation have been made possible, what their quality is and how they can help in the decision-making processes for practical applications.

By Llorenç Lledó, Barcelona Supercomputing Center, Barcelona

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The MegaWindForce Turbine

A Revolutionary Concept Featuring a Ring-Shaped Generator

110001 Koolstof Ring 02 02Members of the MegaWindForce (MWF) team developed a highly efficient variable transmission system back in 2012. While researching whether this invention would contribute to the efficiency of wind turbines they became aware of the catch 22 situation of the wind industry: rotors need to be bigger to harvest more energy, resulting in lower numbers of revolutions, which makes the design of generators more complex and relatively more expensive. A new concept was developed, where the main shaft was replaced by a ring. This revolutionary concept resulted in several patents.

By Ton Bos, co-founder and shareholder of MegaWindForce, The Netherlands

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Digital Twin Technology

Life-cycle Engineering Asset Management

Figure 1. Digital twin representation of an offshore wind turbineInternational research and engineering solutions company TWI Ltd has set its sights on harnessing digital twin technology to transform the process of monitoring and maintaining offshore wind turbines. TWI has built up its knowledge in the structural health and condition monitoring of wind turbines in recent years as a result of its participation in a number of European and UK collaborative projects, including CMSWind, WTBMonitor and TOWERPOWER.

By Ángela Angulo, Senior Project Leader, TWI Ltd, UK

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Smart Electricity Storage

Ramboll fig 1District Heating and Cooling with Thermal Storage – A Virtual Battery

Wind energy is becoming a dominant renewable source, providing energy for consumers of electricity, heating and cooling. Unfortunately, few consumers can use the energy directly as the wind blows. We need storage, to avoid loss of energy.

By Anders Dyrelund, Senior Market Manager, and Søren Møller Thomsen, Energy Planner, Ramboll, Denmark

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Asset Integrity Management for Wind Turbines

Using Probabilistic Remaining Useful Life Models to Optimise Wind Turbines

Intertek Fig1Wind turbine asset management is complex, but essential to maximise profits and maintain life cycle costs. The complexity arises for several reasons, including rapid technology development, complex supply chains and constrained infrastructure, remote locations and, more generally, lack of detailed failure data. The goal of asset management is to effectively manage corporate assets to gain maximum value, profitability and returns while safeguarding personnel, the community and the environment. A true asset integrity management programme incorporates design, maintenance, inspection, process, operations and management concepts, since all these disciplines affect the integrity of infrastructure and equipment.

By Nikhil Kumar, David L. Rogers and Philip Besuner, USA

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The wind2hydrogen Research Project

A Pilot Plant for the Production of Renewable Hydrogen

Figure 1 ZaunerThe pilot plant built within the course of the wind2hydrogen (w2h) research project is the first of this size in Austria and is unique of its kind. The main differences from other projects lie in the chosen type, design and control of the electrolyser as well as the possibility to provide multiple markets with renewable hydrogen. Current and future business cases are simulated in experimental operation from the perspective of the public power grid and the gas grid operator. With this comprehensive approach, reliable statements on the boundary conditions of the power-to-gas technology and future requirements for economic feasibility are expected.

By Andreas Zauner and Robert Tichler, Energieinstitut an der Johannes Kepler Universität, Austria

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Producing an Optimal DFIG Converter for the Indian Market

Development, Validation and Certification of Ingeteam’s Power Converter in Suzlon’s S11x Wind Turbine


Ingeteam Figure 1 Left Ingeteam Figure 1 Right

During the last 20 years, wind power’s share in electricity generation has substantially grown, making the power quality and stability of wind systems increasingly important. Consequently, the grid codes (which establish the requirements that all generation systems must fulfil in order to be allowed to connect to the grid) have been updated in order to guarantee the stability of the grid. Until the recent past, wind turbines were allowed to disconnect from the grid when transient changes in grid voltage might jeopardise the integrity of their elements, especially the power converter. However, nowadays, this is no longer allowed. Moreover, the turbines must also support the grid with active and reactive current during these transient conditions.

By Aritz Lorea, Product Manager, Wind Business, Ingeteam Power Technology, Spain

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