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- Category: Articles
Offering Benefits Compared with Conventional HVDC Copper Cables in Offshore Grids
Subsea superconducting transmission cables, a new innovative cable technology, were shown to offer greater economic benefits to the energy system than conventional high-voltage, direct current (HVDC) copper technology in a 2050 offshore grid. The University of Strathclyde, Glasgow, Offshore Renewable Energy Catapult, UK, and SuperNode, Ireland, have conducted technical and techno-economic studies analysing the potential benefits of high-temperature superconductor subsea transmission cables compared with conventional copper 525kV HVDC cable technology.By Maria O’Neill, Technology Analyst, SuperNode, Ireland
- Category: Articles
Wind Power Performance Data Exchange – WiPPeX
Data-supported operation and maintenance optimisation can help operators of wind turbines reduce possible downtime and identify production increases. This requires continuous monitoring or analysis of the sensor data provided. This data is key to understanding turbine performance, managing expectations of operational assets and identifying opportunities for optimising performance. Databases provide the ability to access a large heterogeneous pool of data, allowing for much more accurate identification of, for example, trends in age or deviations in plant performance. Depending on the operator’s preference, different key performance indicators can be created and benchmarks for competitors established.By Robert Rogotzki and Mario Bachhiesl, vgbe energy, Germany
- Category: Articles
Techno-Economic Tool for the Optimisation of Offshore Wind Farms Using a Genetic AlgorithmThe offshore wind industry has developed rapidly during recent years and is expected to continue expanding over the coming decades. The industry is moving forward, and bigger wind farms are being installed all over the world. Despite the increase in the number of wind farms, the initial investments and operation costs are still relatively high. Reducing the total costs associated with offshore wind farms is crucial to limit economic risks and attract new investors. One of the most notable parts of the total cost is associated with electricity exportation, which is highly influenced by the strategy defined to interconnect the turbines. With the objective of reducing these costs, this article presents a genetic-algorithm-based techno-economic tool that optimises the electric layout considering the loss of revenue due to electric losses inside the wind farm and the purchasing cost of electric cables.
By Mikel Rosell Diez, Engineer, IDOM Consulting, Engineering, Architecture, Spain
- Category: Articles
Achieving High Data Availability from Wind and Solar AssetsAs the cumulative deployment of renewable energy grows, digital solutions for renewable asset management and analytics are becoming increasingly popular. Data accessibility and data quality serve as system cornerstones.
By Feng Zhang and Gopi Maniachari, Utopus Insights, USA
- Category: Articles
Mooring System Damage Detection in Floating Wind Turbines Through Satellite PositioningA structural health monitoring system has been developed to detect damage in the mooring system of floating wind turbines by analysing the movement of the platform. A cost-effective smart sensor that combines a global navigation satellite system and an inertial navigation unit is used. The collected data is used to create mathematical models when the system is healthy. After the so-called learning period, new incoming data feeds the models, which in turn evaluate the behaviour of the platform compared with the reference situation. If the difference exceeds a threshold, damage in the mooring system is assumed.
By Jon Basurko, Researcher, IKERLAN BRTA, Spain
- Category: Articles
The Aerosense Data Gateway – An Open-Source Turbine-To-Cloud Data Engineering Example
Getting data from wind turbines cleaned, sorted and into the hands of engineers is a common but overwhelming task. Security, reliability, edge/cloud engineering particulars and the FAIR digitalisation principles (Findability, Accessibility, Interoperability and Reusability) must all be considered, requiring a large investment of time and a rare combination of skills.By Marcus Lugg, Senior Software Engineer, Octue, UK
- Category: Articles
Tower Stiffness Influence on the Response of Rock Adapter FoundationsCTE Wind acted as an independent reviewer of an onshore rock adapter wind turbine foundation design for a wind farm in a Scandinavian country. During the analysis it was observed that including the tower stiffness in the numerical models was critical to accurately capture the structure’s behaviour. The tower stiffness was taken into account by modelling a segment of its actual geometry. The simulations showed that the rock anchors in the original design did not meet the safety requirements in terms of tensile strength. The reasons for the divergence in results are explored in this article.
By David Alegre Gimeno, Senior Engineer, CTE Wind Civil Engineering, France
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