Blar i NTNU Open på forfatter "Fosso, Olav B"
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Flexible distribution network - Local flexibility and aggregation
Høivik, Øivind (Master thesis, 2015)The increasing intermittent production from wind power and solar-PV creates a system that is more complex to plan, control and balance. At the same time, there is an increase in power consumption due to electric vehicles, ... -
Frequency Domain Modelling for Assessment of Hilbert and SOGI Based Single-Phase Synchronisation
Føyen, Sjur; Fosso, Olav B; Zhang, Chen; Molinas Cabrera, Maria Marta (Chapter, 2019)Two different single-phase synchronisation schemes based on orthogonal system generation (OSG) are modelled in the linear, time-periodic framework. The frequency adaptive Hilbert phase locked loop (PLL) and the frequency-fixed ... -
Gasskraftverk Kårstø
Vestrum, Johan Inderberg (Master thesis, 2007)Denne diplomoppgaven er skrevet i samarbeid med Statnett. Naturkraft har under bygging et gasskraftverk på Kårstø i Rogaland. Dette er et såkalt combined-cycle-kraftverk (kombinert kraftverk), som består av en gassturbin ... -
Impact of Virtual Oscillator Control on the instantaneous properties of VSC output voltage in distorted island grids
Melby, Mathias; Fosso, Olav B; Molinas Cabrera, Maria Marta (Chapter, 2019)This paper investigates the instantaneous properties of voltage and frequency of Voltage Source Converters (VSCs) when they are controlled by Virtual Oscillator Controllers (VOC) in a distorted island grid. Under time-averaged ... -
Impedance scanning with chirps for single-phase converters
Føyen, Sjur; Zhang, Chen; Molinas Cabrera, Maria Marta; Fosso, Olav B; Isobe, Takanori (Chapter, 2022)Impedance scanning of single-phase AC-DC converters is challenging due to frequency couplings, which map one injection frequency to a multiple of output frequencies. Single-tone injections are often preferred over wideband ... -
Implementing Hydropower Scheduling in a European Expansion Planning Model
Brovold, Sondre Heen (Master thesis, 2014)This Master s thesis proposes a method for implementing an enhanced hydropower planning formulation in a long-term expansion planning model. The motivation for this work is the important role that hydropower plays in a ... -
Implementing Hydropower Scheduling in a European Expansion Planning Model
Brovold, Sondre; Skar, Christian; Fosso, Olav B (Journal article; Peer reviewed, 2014)A method for implementing an enhanced hydropower planning formulation in a long-term expansion planning model is proposed. The methodological framework involves assigning hydropower generation a marginal cost through water ... -
Improving Stability of Ghana's Power System Using Power System Stabiliser(PSS)
Mensah, Kwaku Sarpong (Master thesis, 2009)Stability of a power system is vital for its reliable operation and maintaining system stability has been a big challenge for engineers over the years. One way of improving system stability is the use of power system ... -
An Input-Voltage-Sharing Control Strategy of Input-Series Output-Parallel Isolated Bidirectional DC/DC Converter for DC Distribution Network
Wang, Yu; Guan, Yuanpeng; Fosso, Olav B; Molinas Cabrera, Maria Marta; Chen, Si-Zhe; Zhang, Yun (Peer reviewed; Journal article, 2021)Input-series-output-parallel (ISOP) isolated bidirectional direct current (dc)/dc converter (IBdc) becomes a preferred scheme connecting high-voltage and low-voltage bus in dc distribution network. Input-voltage-sharing ... -
Instability Mode Recognition of Grid-Tied Voltage Source Converters with Nonstationary Signal Analysis
Zhang, Yu; Føyen, Sjur; Zhang, Chen; Molinas Cabrera, Maria Marta; Fosso, Olav B; Cai, Xu (Chapter, 2022)With the increasing penetration of voltage-source-converter (VSC) -interfaced distributed generations (DGs) in power systems, oscillation issues have been widely concerned whereas the root cause and nature of the oscillation ... -
Large scale integration of wind power in a transmission grid
Wigen Finstad, Hans (Master thesis, 2009)In this report, only stationary analyses have been performed. The results and analyses performed are based on the model as described in the system description. Assumptions made and deviations from the real life grid may ... -
Large-scale wind power integration in Nordland
Solvang, Tarjei Benum (Master thesis, 2007)Nord-Norsk Vindkraft AS is planning to build two wind farms in Nordland, Norway. The wind farms are located at Sleneset and Sjonfjellet. The planned total installed power is 653 MW. An important part of the planning phase ... -
Modal Analysis of Weak Networks with the Integration of Wind Power
Hovd, Asbjørn Benjamin (Master thesis, 2008)In this master thesis the theory and practical use of modal analysis is explained, giving an introduction to the possibilities of modal analysis. The master thesis starts with a look at wind power and the design of a modern ... -
Modeling Interdependencies with Complex Network Theory in a Combined Electrical Power and ICT System
Myhre, Stine Fleischer; Fosso, Olav B; Heegaard, Poul Einar; Gjerde, Oddbjørn; Kjølle, Gerd Hovin (Chapter, 2020)The extensive integration of information and communication technology (ICT) in the future electrical power system transforms the power system to a cyber physical system (CPS), making it a system-of-systems. This new system ... -
A Monte Carlo Method for Adequacy Assessment of Cyber-Physical Distribution Systems
Vistnes, Matias Kraft; Myhre, Stine Fleischer; Fosso, Olav B; Vadlamudi, Vijay Venu (Chapter, 2022)The behaviour of the distribution system is continuously changing with higher penetration of distributed generation and increased electrification, thus requiring new measures for automation, monitoring and protection of ... -
Non-linear charge-based battery storage optimization model with bi-variate cubic spline constraints
Aaslid, Per; Geth, Frederik; Korpås, Magnus; Belsnes, Michael Martin; Fosso, Olav B (Peer reviewed; Journal article, 2020)Variable renewable generation demands increasing amount of flexible resources to balance the electric power system, and batteries stand out as a promising alternative. Battery models for optimization typically represent ... -
Ny HVDC-kapasitet og vindkraft i Sør-Norge
Stray, Kristian (Master thesis, 2009)Sammendrag Det er flere nye likestrømsforbindelser under planlegging mellom Norge / NordEl og det kontinentale Europa / UCTE. Foruten NorGer-prosjektet har også Statnett SF om en ny forbindelse fra Kristiansand til Danmark. ... -
Optimal microgrid operation considering battery degradation using stochastic dual dynamic programming
Aaslid, Per; Belsnes, Michael Martin; Fosso, Olav B (Chapter, 2019)Intermittent energy sources demand temporal storages to balance generation and load, and batteries stand out as an alternative. However, the lifetime is limited, and cycling depth affects the battery degradation rate. ... -
OPTIMAL PRODUKSJON AV REAKTIV EFFEKT I REGIONALNETTET I TELEMARK & VESTFOLD
Eldrup, Martin (Master thesis, 2009)Skagerak Energi AS eier og drifter mesteparten av regionalnettet og kraftverkene i Telemark og Vestfold. Med denne oppgaven ønsker de å bedre samdriften av kraftverkene og regionalnettet i området. Arbeidet skulle resultere ... -
Optimal use of resource flexibility in distribution systems
Dubarry, Fleur (Master thesis, 2017)To cope with the increasing share of dispatchable renewable energy sources, the consumer needs to evolve from being a regular passive consumer, to being a prosumer. The prosumer produces energy through residential solar ...