Blar i SINTEF Open på forfatter "Welte, Thomas Michael"
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A Bayesian network based approach for integration of condition-based maintenance in strategic offshore wind farm O&M simulation models
Nielsen, Jannie Sonderkaer; Sørensen, John Dalsgaard; Sperstad, Iver Bakken; Welte, Thomas Michael (Chapter; Peer reviewed, 2018)In the overall decision problem regarding optimization of operation and maintenance (O&M) for offshore wind farms, there are many approaches for solving parts of the overall decision problem. Simulationbased strategy models ... -
Anomaly indicators for Kaplan turbine components based on patterns of normal behavior
Sanz-Bobi, M.A.; Welte, Thomas Michael; Eilertsen, L. (Chapter; Peer reviewed, 2018)This paper describes and proposes some indicators for continuous monitoring of anomalous conditions in the hydraulic system of a Kaplan turbine using SCADA data. The indicators are based on significant deviations between ... -
Integration of Degradation Processes in a Strategic Offshore Wind Farm O&M Simulation Model
Welte, Thomas Michael; Sperstad, Iver Bakken; Sørum, Espen Høegh; Kolstad, Magne Lorentzen (Journal article; Peer reviewed, 2017)Decision support models for offshore wind farm operation and maintenance (O&M) are required to represent the failure behavior of wind turbine components. Detailed degradation modelling is already incorporated in models for ... -
Models for lifetime estimation: an overview with focus on applications to wind turbines
Welte, Thomas Michael; Wang, Kesheng (Journal article; Peer reviewed, 2014)This paper provides an overview of models and methods for estimation of lifetime of technical components. Although the focus in this paper is on wind turbine applications, the major content of the paper is of general nature. ... -
MonitorX – Experience from a Norwegian-Swedish research project on industry 4.0 and digitalization applied to fault detection and maintenance of hydropower plants
Welte, Thomas Michael; Foros, Jørn; Nielsen, M.H.; Adsten, M. (Journal article, 2018) -
Operation and Maintenance Modelling
Welte, Thomas Michael; Sperstad, Iver Bakken; Halvorsen-Weare, Elin Espeland; Netland, Øyvind; Nonås, Lars Magne; Stålhane, Magnus (Chapter, 2018)Operational expenditure (OPEX) is one of the major contributors to the levelized cost of energy (LCoE) for offshore wind farms. To assess different solutions and select the best ones, good models for maintenance and logistics ... -
Recommended practices for wind farm data collection and reliability assessment for O&M optimization
Hahn, Berthold; Welte, Thomas Michael; Faulstich, Stefan; Bangalore, Pramod; Boussion, Cyril; Harrison, K; Miguelanez-Martin, Emilio; O'Connor, Frank; Pettersson, Lasse; Soraghan, Conaill; Stock-Williams, Clym; Sørensen, John Dalsgaard; van Bussel, Gerard; Vatn, Jørn (Peer reviewed; Journal article, 2017)The paper provides a brief overview of the aims and main results of IEA Wind Task 33. IEA Wind Task 33 was an expert working group with a focus on data collection and reliability assessment for O&M optimization of wind ... -
Surveillance and condition monitoring of offshore wind turbines : D5.2-47
Welte, Thomas Michael (SINTEF Energi. Rapport;TR A7553, Research report, 2016-02-02)This report summarizes results from the activities on surveillance and condition monitoring in work packages WP 5 (2009-2014) and WP B (2015) in the NOWITECH research centre. The research covered both condition monitoring ...