Blar i SINTEF Open på forfatter "Sperstad, Iver Bakken"
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A graph-based modelling framework for vulnerability analysis of critical sequences of events in power systems
Sperstad, Iver Bakken; Solvang, Espen Hafstad; Jakobsen, Sigurd Hofsmo (Journal article; Peer reviewed, 2020)Major blackouts may have critical societal consequences and are very challenging to analyse and mitigate. Part of the challenge lies in the complex sequences of events that characterize such blackouts and that involve a ... -
Identifying high-impact operating states in power system reliability analysis
Sperstad, Iver Bakken (Chapter; Peer reviewed, 2018)The reliability of a power system depends, among other things, on the operating states of the system. For reliability analysis for long-term planning purposes, it may be necessary to consider a large set of representative ... -
The impact of flexible resources in distribution systems on the security of electricity supply: A literature review
Sperstad, Iver Bakken; Degefa, Merkebu Zenebe; Kjølle, Gerd Hovin (Peer reviewed; Journal article, 2020)The power system is transitioning from the traditional one-way system to a more integrated and complex system with more active end-users and with generation and reverse power flow at the distribution level. As a part of ... -
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 ... -
Investigating Key Decision Problems to Optimize the Operation and Maintenance Strategy of Offshore Wind Farms
Sperstad, Iver Bakken; McAuliffe, Fiona Devoy; Kolstad, Magne Lorentzen; Sjømark, Severin (Journal article; Peer reviewed, 2016)This paper investigates three decision problems with potential to optimize operation and maintenance and logistics strategies for offshore wind farms: the timing of pre-determined jack-up vessel campaigns; selection of ... -
Joint optimization of preventive and condition-based maintenance for offshore wind farms
Toftaker, Håkon; Bødal, Espen Flo; Sperstad, Iver Bakken (Peer reviewed; Journal article, 2022) -
A lifecycle financial analysis model for offshore wind farms
Judge, Frances; McAuliffe, Fiona Devoy; Sperstad, Iver Bakken; Chester, Rachel; Flannery, Brian; Lynch, Katie; Murphy, Jimmy (Journal article; Peer reviewed, 2019)Simulation and modelling allow a range of offshore wind farm stakeholders to test and improve a project's viability in a cost-effective and safe manner. This paper presents a model developed to conduct detailed financial ... -
Methodology for Evaluating Grid Development Strategies Considering Real Options and Risks
Sperstad, Iver Bakken; Rana, Rubi; Sandell, Susanne (Chapter; Peer reviewed, 2023)Traditional power grid planning is based on passive measures such as reinforcing the grid and using present value to compare different grid development plans. However, this approach does not accurately describe the real ... -
Modelling of corrective actions in power system reliability analysis
Sperstad, Iver Bakken; Jakobsen, Sigurd Hofsmo; Gjerde, Oddbjørn Idar (Chapter; Peer reviewed, 2015)Consequence analysis, including the modelling of corrective actions, is an important component when performing power system reliability analyses. Using an integrated methodology for power system reliability analysis, we ... -
NOWIcob - A tool for reducing the maintenance costs of offshore wind farms
Hofmann, Matthias; Sperstad, Iver Bakken (Peer reviewed; Journal article, 2013)It is essential to implement cost-effective operation and maintenance concepts and strategies to achieve a significant reduction of cost of energy from offshore wind farms. A decision support tool (Norwegian offshore wind ... -
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 ... -
Optimal power flow methods and their application to distribution systems with energy storage : a survey of available tools and methods
Sperstad, Iver Bakken; Marthinsen, Håkon (SINTEF Energi. Rapport;, Research report, 2016) -
Probabilistic socio-economic cost assessment integrating power market and reliability analysis
Sperstad, Iver Bakken; Wolfgang, Ove; Helseth, Arild; Reigstad, Tor Inge; Kjølle, Gerd Hovin (Chapter; Peer reviewed, 2018)Abstract: Moving from deterministic to probabilistic reliability criteria for power systems necessitates probabilistic methods for socio-economic impact assessment. This paper demonstrates a probabilistic assessment of the ... -
Reference cases for verification of operation and maintenance simulation models for offshore wind farms
Dinwoodie, Iain; Endrerud, Ole-Erik Vestøl; Hofmann, Matthias; Martin, Rebecca; Sperstad, Iver Bakken (Journal article; Peer reviewed, 2015)Due to lack of operating experience in the field of offshore wind energy and large costs associated with maintaining offshore wind farms, there is a need to develop accurate operation and maintenance models for strategic ... -
Technical documentation of version 3.3 of the NOWIcob tool
Sperstad, Iver Bakken; Kolstad, Magne Lorentzen; Hofmann, Matthias (SINTEF Energi. Rapport;, Research report, 2017) -
Technical documentation of version 3.3 of the NOWIcob tool
Hofmann, Matthias; Sperstad, Iver Bakken; Kolstad, Magne Lorentzen (SINTEF Energi. Rapport;, Research report, 2017) -
Testing the robustness of optimal access vessel fleet selection for operation and maintenance of offshore wind farms
Sperstad, Iver Bakken; Stålhane, Magnus; Dinwoodie, Iain; Endrerud, Ole-Erik Vestøl; Martin, Rebecca; Warner, Ethan (Journal article; Peer reviewed, 2017-11-15)Optimising the operation and maintenance (O&M) and logistics strategy of offshore wind farms implies the decision problem of selecting the vessel fleet for O&M. Different strategic decision support tools can be applied to ... -
The LEANWIND suite of logistics optimisation and full lifecycle simulation models for offshore wind farms
McAuliffe, Fiona Devoy; Lynch, Katie; Sperstad, Iver Bakken; Nonås, Lars Magne; Halvorsen-Weare, Elin Espeland; Jones, Dylan; Akbari, Negar; Wall, Graham; Irawan, Chandra; Norstad, Inge; Stålhane, Magnus; Murphy, Jimmy (Journal article; Peer reviewed, 2018)The offshore wind sector has achieved significant cost reductions in recent years. However, there is still work to be done to maintain and surpass these savings across current and future farms. There is increased competition ... -
The LEANWIND suite of logistics optimisation and full lifecycle simulation models for offshore wind farms
McAuliffe, Fiona Devoy; Lynch, Katie; Sperstad, Iver Bakken; Nonås, Lars Magne; Halvorsen-Weare, Elin Espeland; Jones, Dylan; Wall, Graham; Irawan, Chandra; Norstad, Inge; Stålhane, Magnus (Journal article; Peer reviewed, 2018)The offshore wind sector has achieved significant cost reductions in recent years. However, there is still work to be done to maintain and surpass these savings across current and future farms. There is increased competition ... -
Transmission Line Length Estimation based on Electrical Parameters
Vrana, Til Kristian; Sperstad, Iver Bakken (Chapter; Peer reviewed, 2019)