Zerrendatu Ikerketa-Artikuluak honen arabera: egilea "4d6b8789a9d665df9f8e1cf7ebd8fe84"
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Application of the D3H2 Methodology for the Cost-Effective Design of Dependable Systems
Aizpurua Unanue, Jose Ignacio; Muxika Olasagasti, Eñaut (MDPI AG, 2019)The use of dedicated components as a means of achieving desirable levels of fault tolerancein a system may result in high costs. A cost effective way of restoring failed functions is to use heterogeneous redundancies: ... -
Best Practice Data Sharing Guidelines for Wind Turbine Fault Detection Model Evaluation
Izagirre, Unai; Serradilla, Oscar; Olaizola, Jon; Zugasti, Ekhi; Aizpurua Unanue, Jose Ignacio (MDPI, 2023)In this paper, a set of best practice data sharing guidelines for wind turbine fault detection model evaluation is developed, which can help practitioners overcome the main challenges of digitalisation. Digitalisation is ... -
Context-informed conditional anomaly detection approach for wave power plants: The case of air turbines
Aizpurua Unanue, Jose Ignacio; Penalba, Markel; Kirillova, Natalia (Elsevier, 2022)The reliability and energy production of wave power plants (WPPs) depend on sea-state conditions, operation efficiency and degradation of its constituent assets. Air turbines are key assets for the efficient and reliable ... -
A data-driven long-term metocean data forecasting approach for the design of marine renewable energy systems
Penalba, Markel; Aizpurua Unanue, Jose Ignacio (Elsevier, 2022)The potential of Marine Renewable Energy (MRE) systems is usually evaluated based on recent metocean data and assuming the stationarity of the MRE resource. Yet, different studies in the literature have shown long-term ... -
A Diagnostics Framework for Underground Power Cables Lifetime Estimation Under Uncertainty
Aizpurua Unanue, Jose Ignacio; Garro, Unai; Muxika Olasagasti, Eñaut; Mendicute, Mikel (IEEE, 2020)Power cables are critical assets for the reliable operation of the grid. The cable lifetime is generally estimated from the conductor temperature and associated lifetime reduction. However, these tasks are intricate due ... -
FPGA-Based Degradation and Reliability Monitor for Underground Cables
Garro, Unai; Muxika Olasagasti, Eñaut; Aizpurua Unanue, Jose Ignacio; Mendicute, Mikel (MDPI AG, 2019)The online Remaining Useful Life (RUL) estimation of underground cables and their reliability analysis requires obtaining the cable failure time probability distribution. Monte Carlo (MC) simulations of complex thermal ... -
Hybrid Transformer Prognostics Framework for Enhanced Probabilistic Predictions in Renewable Energy Applications
Aizpurua Unanue, Jose Ignacio; Perez Ramirez, Ibai Aner (IEEE, 2022)The intermittent nature of renewable energy sources (RESs) hamper their integration to the grid. The stochastic and rapid-changing operation of RES technologies impact on power equipment reliability. Transformers are key ... -
Integrated machine learning and probabilistic degradation approach for vessel electric motor prognostics
Aizpurua Unanue, Jose Ignacio (Elsevier, 2023)In the transition towards more sustainable ships, electric motors (EM) are being used in ship propulsion systems to reduce emissions and increase efficiency. The safe operation of ships is crucial, and prognostics and ... -
Modelling and Resolution of Dynamic Reliability Problems by the Coupling of Simulink and the Stochastic Hybrid Fault Tree Object Oriented (SHyFTOO) Library
Aizpurua Unanue, Jose Ignacio (MDPI, 2019)Dependability assessment is one of the most important activities for the analysis of complex systems. Classical analysis techniques of safety, risk, and dependability, like Fault Tree Analysis or Reliability Block Diagrams, ... -
O&M-aware techno-economic assessment for floating offshore wind farms: A geospatial evaluation off the North Sea and the Iberian Peninsula
Centeno-Telleria, Manu; Aizpurua Unanue, Jose Ignacio; Penalba, Markel (Elsevier, 2024)The development of accurate techno-economic models is crucial to boost the commercialisation of floating offshore wind farms. However, conventional techno-economic models oversimplify operation and maintenance (O&M) aspects, ... -
On the Definition of a Comprehensive Technology-Informed Accessibility Metric for Offshore Renewable Energy Site Selection
Centeno-Telleria, Manu; Zarketa-Astigarraga, Ander; Aizpurua Unanue, Jose Ignacio; Penalba, Markel (MDPI, 2023)Despite the important role of offshore renewable energies (OREs) in the energy transition, the economical viability is still unclear. Therefore, an appropriate site selection is crucial. Besides the energy potential, the ... -
On the definition of a risk index based on long-term metocean data to assist in the design of Marine Renewable Energy systems
Penalba, Markel; Aizpurua Unanue, Jose Ignacio (Elsevier Ltd, 2021)Marine Renewable Energy (MRE) systems are designed to maximise energy generation and ensure survivability. The traditional design process is based on pure environmental conditions, tends to be too conservative and limits ... -
Probabilistic feature selection for improved asset lifetime estimation in renewables. Application to transformers in photovoltaic power plants
Ramirez García, Ibai; Aizpurua Unanue, Jose Ignacio (Elsevier, 2024)The increased penetration of renewable energy sources (RESs) as an effective mechanism to reduce carbon emissions leads to an increased weather dependency for power and energy systems. This has created dynamic operation ... -
Probabilistic forecasting informed failure prognostics framework for improved RUL prediction under uncertainty: A transformer case study
Aizpurua Unanue, Jose Ignacio; Penalba, Markel; Barrenetxea, Manex; Muxika Olasagasti, Eñaut (Elsevier Ltd., 2022)The energy transition towards resilient and sustainable power plants requires moving from periodic health assessment to condition-based lifetime planning, which in turn, creates new challenges and opportunities for health ... -
Uncertainty Distribution Assessment of Jiles-Atherton Parameter Estimation for Inrush Current Studies
Ugarte Valdivielso, Jone; Aizpurua Unanue, Jose Ignacio; Barrenetxea, Manex (IEEE, 2024)Transformers are one of the key assets in AC distribution grids and renewable power integration. During transformer energization inrush currents appear, which lead to transformer degradation and can cause grid instability ...
