Blar i Institutt for elkraftteknikk på emneord "Energi og miljø, Elektriske kraftsystemer"
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Consumption Profiles for Future Households
(Master thesis, 2015)Over the last few years there has been a change in energy consumption in Norwegian households. New houses are far better insulated, have high demands for efficient energy carriers and new installations that affect the ... -
Cost-Benefit Analysis of Maintenance Measures for Power Transformers
(Master thesis, 2017)The work described in this thesis was conducted in cooperation with SINTEF Energy Research and their collaborating partners in the research project Trafotiltak . The objective of the project is to develop a decision-making ... -
Design and Operation Principles of DC Circuit Breakers - Development of a Solid State DC Breaker for the NTNU/SINTEF Smart Grid and Renewable Energy Laboratory
(Master thesis, 2016)Exciting high voltage direct current (HVDC) transmission systems are mainly point-to-point connections. A multi-terminal HVDC grid consisting of three or more inter connected converter stations is suggested in order to ... -
Design av smarthus
(Master thesis, 2015)Formålet med dette arbeidet har vært å kartlegge aktuelle smarte komponenter samt implementere løsninger til bruk i smarthuslaboratoriet som skal utvikles på NTNU. Laboratoriet skal fungere som en nasjonal testingsplattform ... -
Development of Test Methods for a Combined DC Power and Fiber Optic Deep Water Subsea Cable - Effect of DC Pre-stress on AC Withstand Strength
(Master thesis, 2015)Repeatered fiber optic submarine cables require a very high reliability. The cables operate at a voltage of 10 kV DC to supply electrical power to the repeaters that are placed every 50-70 km along the cable to amplify the ... -
Dynamic Simulations of Simultaneous HVDC Contingencies in the Nordic Power System Considering System Integrity Protection Schemes
(Master thesis, 2018)Individual HVDC links connecting the Nordic power system to other synchronous systems may carry gigawatts of power. For the transmission system operators, who must maintain power balance to operate the grid at 50.0 Hz, the ... -
Efficient Power Flow Algorithms for Risk Management in Electrical Power Systems
(Master thesis, 2015)Abstract The society depends on a reliable electrical power system. The socio-economic cost will be high if a wide-ranging disruption of the supply occurs over an extended period of time. Thus programs that help system ... -
Electrical Grid Study of Using Offshore Wind Power for Oil & Gas Offshore Installations
(Master thesis, 2017)The purpose of this thesis is to investigate the performance of a wind integrated oil & gas offshore installation. The motivation behind this is to reduce emissions of CO2 and other greenhouse gases from offshore installations ... -
Elektrisk trevekst og partielle utladninger i silikongummi for HVAC konnektorer - Innvirking av hydrostatisk trykk og olje
(Master thesis, 2016)Konnektoren er en viktig komponent for kraftforsyning av subsea utstyr og er regnet som en av de mest kristiske komponentene. For å sveipe av vann når konnektoren kobles til kan blant annet silikon brukes. Silikonmaterialet ... -
Energiøkonomisk togfremføring vs dimensjonering av jernbanens strømforsyningsanlegg - En casestudie av Jærbanen med tilhørende mulighetsstudie rundt bruk av batteri i banestrømforsyningen
(Master thesis, 2018)Denne rapporten tar for seg hvorvidt det foreligger en mulig teknisk/økonomisk motsetning mellom energiøkonomisk togfremføring og dimensjonering av jernbanenes strømforsynings-anlegg. Den gjennomfører også en mulighetsstudie ... -
Evaluation of Possible PV System Solutions for Streetlight´s Care Center in Tagpuro, Philippines
(Master thesis, 2017)This thesis has evaluated different photovoltaic (PV) system solutions applicable for Streetlight in Tagpuro. The evaluation has consisted of on-grid and off-grid system designs. Streetlight operates a care center in ... -
Feasibility Studies on a Stand-Alone Hybrid Wind-Diesel System for Fish Farming Applications
(Master thesis, 2017)This thesis aims to explore feasibility related to implementing a Hybrid Wind-Diesel System for an offshore fish farm. The primary motivation behind this is to exploit the excellent wind resources along the Norwegian coast ... -
Generation system adequacy studies in the presence of wind energy resources
(Master thesis, 2018)Variable renewable energy sources like wind power are in exponential growth worldwide. One of the major challenges regarding high penetration of wind energy in the power system is the degradation of generation adequacy due ... -
Ground Fault Protection of Transmission Lines
(Master thesis, 2017)The ever more electrified and energy-intensive society increases the need for a secure power grid and energy service. The transmission system is the backbone of the electrical power infrastructure, to have a well-functioning ... -
High voltage wound-rotor induction machines - harmonic field effects and power quality issues
(Master thesis, 2015)The last few decades, harmonic content in the power system has increased dramatically, due to more complex power systems containing more power electronics and other nonlinear loads. The background for this work is a severe ... -
Hybrid HVDC Transmission for Large-Scale Offshore Wind Integration - Model-Based Control Design and Performance Assessment
(Master thesis, 2017)Today, the world faces major challenges regarding our global environment. The most pressing challenge is global warming, and the scientific community is well aware of the catastrophic consequences an increase in global ... -
Hywind Powering Utsira - A reliability study of offshore wind connected to multiple oil and gas platforms
(Master thesis, 2017)Today four oil and gas platforms are being commissioned in the Utsira High area. One of the platforms is powered from shore by a 120MW/+-80 kV HVDC cable. The three other platforms will first be powered by gas turbines ... -
Impact of EV Integration and Fast Chargers in a Norwegian LV Grid - An analysis based on data from a residential grid in Steinkjer
(Master thesis, 2018)Given a renewable power supply, the replacement of conventional vehicles with electric alternatives has the potential to significantly reduce climate gas emissions from the transport sector. Norway has implemented economic ... -
Impact of Variable-Speed Hydro on Power System Frequency Stability
(Master thesis, 2018)In this thesis the impacts of variable-speed hydro on the system frequency is studied, by developing a simplified power system model in Simulink based on the swing equation and DC power flow. The model is verified against ... -
Incorporation of Power Flow Descriptions in an Optimization Model for Multinational Transmission Expansion Planning - A Comparative Analysis of Power Flow Modeling Using NTCs and PTDFs
(Master thesis, 2016)Multinational transmission expansion planning (TEP), i.e. investments in cross-border electric power exchange capacity, is an important step towards achieving the ambitious decarbonization targets for the energy sector ...