Institutt for elkraftteknikk: Recent submissions
Now showing items 121-140 of 2468
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HTS Winding Design and 3D FEA Modeling of Superconducting Machine for Aviation
(Master thesis, 2023)I denne avhandlingen presenteres metoder og formuleringer for modellering av roterende elektriske maskiner. 3D-modeller av en superledende maskin for luftfart utvikles ved hjelp av den kommersielle FEA-programvaren Comsol ... -
Control and Stability of Isolated Grids with Synchronous and Non-Synchronous Generation
(Doctoral theses at NTNU;2023:450, Doctoral thesis, 2023)This thesis explores the challenges and opportunities associated with integrating offshore wind turbines into a geographically compact power-intensive isolated electric grid that is currently supplied by gas-powered ... -
Erfaringer og resultater fra case-studier
(SINTEF Rapport, Research report, 2023)Denne rapporten har med utgangspunkt i ElMar-prosjektets fem casestudier samlet erfaringer fra planlegging, etablering, drift og bruk av landstrømsanlegg. Erfaringene kommer fra flere aktører (havner, nettselskap, ... -
Frequency Converter Solutions and Control Methods for Varible Speed Operation of Pumped Storage Plants
(Doctoral theses at NTNU;2023:399, Doctoral thesis, 2023)Pumped storage hydropower plants (PSHP) are widely used for bulk energy storage around the world. The variable speed operation of these plants further enables their capability to regulate the power in pump mode as well. ... -
Provision of Primary Frequency Control from Electric Vehicles in the Nordic Power System
(Master thesis, 2023)Etterhvert som det grønne skiftet fortsetter vil fornybare energikilder som sol og vind ta over som den dominerende energikilden i store deler av verden. Disse energikildene bidrar ikke med treghet til kraftsystemet, noe ... -
Flexibility Characterization, Aggregation, and Market Design Trends with a High Share of Renewables: a Review
(Peer reviewed; Journal article, 2023)Purpose of Review Balancing a large share of solar and wind power generation in the power system will require a well synchronized coordination of all possible flexibility sources. This entails developing market designs ... -
Suitability assessment of high-power energy storage technologies for offshore oil and gas platforms: A life cycle cost perspective
(Peer reviewed; Journal article, 2023)This paper presents a technology suitability assessment (TSA) of high-power energy storage (ES) systems for application in isolated power systems, which is demonstrated through the case of offshore oil and gas platforms ... -
Maximizing self-consumption rates and power quality towards two-stage evaluation for solar energy and shared energy storage empowered microgrids
(Peer reviewed; Journal article, 2022)Substantial penetration levels of intermittent and fluctuated renewable energy resources like PV can cause overcapacity and other operational challenges in the grid. Therefore, energy market actors are directed to the ... -
Optimal and Adaptive Arming of System Protection Schemes
(Doctoral theses at NTNU;2023:437, Doctoral thesis, 2023)A dependable power supply is critical to the well-being of today’s society. According to forecasts, this issue will become increasingly relevant and pose numerous challenges that need to be faced. The energy demand is ... -
Designing climate policy mixes: Analytical and energy system modeling approaches
(Peer reviewed; Journal article, 2023)A matter of debate in climate policy is whether lawmakers should rely on carbon pricing or regulations, such as low-carbon standards, to reach emission reduction goals. Past research showed that pricing is more cost-effective. ... -
Suitability assessment of high-power energy storage technologies for offshore oil and gas platforms: A life cycle cost perspective
(Peer reviewed; Journal article, 2023)This paper presents a technology suitability assessment (TSA) of high-power energy storage (ES) systems for application in isolated power systems, which is demonstrated through the case of offshore oil and gas platforms ... -
Wireless Control of Active Gate Drivers for Silicon Carbide power MOSFETs
(Peer reviewed; Journal article, 2023)Active Gate Drivers (AGDs) enhance controllability and monitoring of switching devices, especially for fast switching Silicon Carbide (SiC) power Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). To support ... -
Implementing LSTM machine learning in long-term hydropower scheduling
(Master thesis, 2023)Energiforbruket øker raskt globalt, og med miljøkrisen erstatter stadig flere mennesker fossile brensler med fornybare energikilder. De nye fornybare energikildene er ikke like fleksible og pålitelige som de gamle fossile ... -
Improved Zone 1 Top-line Tilting Scheme for Polygonal Distance Protection in the Outgoing Line of Type-4 Wind Parks
(Journal article; Peer reviewed, 2023) -
Feasibility of Space Charge Measurements on HVDC Cable Joints: Study Group-IEEE DEIS Technical Committee 'HVDC Cable and Systems:'
(Peer reviewed; Journal article, 2022)This is the first time that the feasibility of space charge measurements on full-sized HVDC cable joints has been explicitly considered. In this article we also consider whether the PEA and TSM techniques could be used. -
Comprehensive Broken Damper Bar Fault Detection of Synchronous Generators
(Peer reviewed; Journal article, 2021)Reliable operation of synchronous generators in hydroelectric power plants is crucial for avoiding unplanned stoppages that can incur substantial costs. The damper winding of salient pole synchronous generators (SPSGs) ... -
An Expeditious Algorithm for Identification and Classification of Rotor Faults in Salient Pole Synchronous Generators
(Peer reviewed; Journal article, 2023)Providing secure electricity depends on the reliable operation of the synchronous generators in power plants. Interturn short-circuit (ITSC) and dynamic eccentricity (DE) faults are among the most prevalent fault types in ... -
Constraint-Driven Deep Learning for N-k Security Constrained Optimal Power Flow
(Master thesis, 2023)The transition to green energy is reshaping the energy landscape, marked by increased integration of renewable energy sources, distributed resources, and the electrification of other energy sectors. These changes challenge ... -
Mitigating Attacks on Artificial Intelligence-based Spectrum Sensing for Cellular Network Signals
(Peer reviewed; Journal article, 2023)Cellular networks (LTE, 5G, and beyond) are dramatically growing with high demand from consumers and more promising than the other wireless networks with advanced telecommunication technologies. The main goal of these ... -
Comparison of Voltage Stability Indices Based on Synchronized PMU Measurements
(Chapter, 2023)The need for reliable information about the status of electrical power systems is an increasingly relevant concern within the current trend of electrification and deployment of power electronics-based devices. In this ...