Blar i Institutt for elkraftteknikk på forfatter "Norges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi og elektroteknikk,Institutt for elkraftteknikk"
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Analyse av magnetfelt og tap ved enderegionen i direkte vannkjølte generatorer
Lid, Arne Moen (Master thesis, 2018)Denne masteroppgaven er en fortsettelse av prosjektoppgaven som ble utført høstsemesteret 2017. I den oppgaven ble det modellert en 2D- og 3D-modell i ANSYS Electronics basert på en av Statkraft AS sine store synkrongeneratorer. ... -
Analyse av ulike anmeldingsmetodikkar i spotmarkedet
Schjølberg, Anders (Master thesis, 2017)Formålet med energidisponering er å utnytte energiressursane, i vårt tilfelle vatnet, for å maksimere inntektene og/eller minimere kostnadane. Analysemodellar med ulik tidshorisont blir brukt til å optimalisere kraftsystemet ... -
Analysis and Simulations of Hybrid Circuit Breaker Technologies in Multi-Terminal HVDC Networks
Moksness, Mats-Julian N (Master thesis, 2016)It is established that voltage source converters (VSC) are required for multiterminal operation of a HVDC network. This converter technology is vulnerable to DC side faults, and it is crucial for a fast interruption to ... -
Balancing Market Integration in Northern European System - A 2020 Case Study
Løvstad, Ingrid Tjellaug (Master thesis, 2017)The Nordic power system is a complex and interconnected system in the sense that all the Nordic countries are closely tied together when it comes to electricity trading, both in the important day-ahead market, where the ... -
Condition Assessment of Oil Impregnated Paper Transformer Insulation using DC Conduction Measurements.
Bjørneby, Marianne (Master thesis, 2016)The objective of this thesis has been to study how DC conduction measurementscan be used as a diagnostic tool for condition assessment of oil impregnated paper.In this context, the DC conduction measurements were performed ... -
Design og uttesting av smarthus
Espeseth, Anders (Master thesis, 2016)Det skal etableres et smarthuslaboratorium på NTNU i forbindelse med et større smartgridprosjekt. Laboratoriet skal legge til rette for uttesting av styringssystemer for smarthus, integrasjon av smarthus i morgendagens ... -
Digital design and validation of GC-VSI control for Photovoltaic(PV) systems
Ren, Jie (Master thesis, 2017)Solar power is one of the most promising renewable energy in future. Nevertheless,the increasing PV penetration rates could lead to many problems. For example, when the local PV generation is higher than the demand in ... -
Energy Flexibility in Power Systems - Challenges and Possibilities
Vernel, Antoine Roger Marcel (Master thesis, 2016)In 2010, owing to reduce carbon dioxide emissions, and furthermore to improve the energy efficiency, the European Council aimed at reducing 20% of Union s energy consumption by 2020. In that way, a large deployment of ... -
Evaluation of Power Losses and Ruggedness of SiC MOSFETs for use in High-Power High-Frequency Induction Heating Generators
Haukelidsæter, Knut (Master thesis, 2018)As the Si IGBTs are confronting its physical limitations when it comes to high-frequency high-power applications, the SiC MOSFET sails up as a promising substitute due to its material properties. However, in the process ... -
Exchange Domains for Cross-border Activation of Balancing Bids - Preventing Internal Congestion in an Integrated European Balancing Activation Optimization
Bood, Hanna (Master thesis, 2018)In the near future Europe's power markets and electric power system operation will undergo significant changes. A pan-European central balancing platform is under a development that is going to optimize the activation and ... -
FES and VRLA Battery in Uninterruptible Power Supply - Comparison between Flywheel Energy Storage and Valve-Regulated Lead-Acid Batteries in Uninterruptible Power Supply
Århus, Trond Fossdal (Master thesis, 2015)Sensitive electronics components are presently ubiquitous, taking on an ever-growing amount of tasks previously handled by human operators. This is obvious in modern industry with ever-increasing automation as well as ... -
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, ... -
Flytbasert Markedskobling
Stølsbotn, Daniel (Master thesis, 2015)Markedsalgoritmen som brukes av det nordiske kraftmarkedet tar i dag ikke hensyn til fysisk flyt i nettet. Denne modellen kalles Net Transfer Capaciy (NTC) og optimerer samfunnsøkonomisk overskudd basert på overføringskapasitetene ... -
Håndtering av endrede jordfeilegenskaper i 22kV distribusjonsnett - Med fokus på deteksjon og vern
Husby, Lars Martin (Master thesis, 2017)Jordfeilvern er en viktig del av distribusjonsnettet da jordfeil er den mest utbredte feilen på dette nettnivået. En jordfeil i distribusjonsnettet vil berøre sluttbrukerne i stor grad og i et stadig mer energikrevende ... -
Integration of Photovoltaic into grid using Modular Multilevel Converter
Dolva, David Krogager (Master thesis, 2017)The integration of solar energy into the power grid is a challenging task. Many configurations and control methods have been studied. In this thesis, the Modular Multilevel Converter is adopted to integrated Photovoltaic ... -
Kapasitivt indusert ladning i høyspentmast fra nærliggende kraftledning
Lytskjold, Jon (Master thesis, 2017)Oppgaven beregner kapasitivt indusert ladning i en høyspentmast i stål, plassert i nærheten av en spenningssatt 420 kV kraftledning. Beregningene ble gjort for varierende avstand til kraftledning og for varierende ... -
Long-term Scheduling of Hydro Power Systems in Multiple Markets
Hjelmeland, Martin Nødland (Master thesis, 2015)Hydropower scheduling models are vital for achieving an optimal utilization of water stored in reservoirs. The high percentage of flexible hydropower generation in Norway has led to scarce volumes in the reserve markets, ... -
Low Frequency Alternating Current (LFAC) Transmission Systems for Offshore Wind Farms - Case Studies on the Use of LFAC, Based on Horns Rev 3 Offshore Wind Farm
Allgot, Kim (Master thesis, 2017)This thesis investigates the use of low frequency alternating current (LFAC) for the longdistance transmission of the power extracted from offshore wind farms. It is based on the measurement of power flow in different nodes ... -
Maximum step out of AC cables to offshore installations
Vatn, Per Tore (Master thesis, 2018)The task of supplying an offshore installation with power is one that can be solved in several different ways. This thesis suggests a compensated AC subsea cable as the power from shore solution. At a length of 200km, the ... -
Modeling and operation of hybrid ferry with gas engine, synchronous machine and battery
Vadset, Martin Skaar (Master thesis, 2018)In this master's thesis, a direct current (DC) hybrid energy system for a liquified natural gas (LNG) ferry is developed and studied. The system is constructed in Matlab and Simulink and consists of two generator sets with ...