Browsing Institutt for elkraftteknikk by Title
Now showing items 1125-1144 of 2571
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Ice-induced vibrations of the Norströmsgrund lighthouse
(Journal article; Peer reviewed, 2018)The signature and occurrence of frequency lock-in (FLI) vibrations of full-scale offshore structures are not well understood. Although several structures have experienced FLI, limited amounts of time histories of the ... -
Identification and Small-Signal Analysis of Interaction Modes in VSC MTDC Systems
(Journal article; Peer reviewed, 2016)In this paper, a methodology is presented to identify and analyze interaction modes between converters in voltage-source converter multiterminal high-voltage direct current (VSC MTDC) systems. The absence of a substantial ... -
Identification of coherency and critical generators set in real-time signal
(Journal article; Peer reviewed, 2017)For a reliable and stable operation of a power system network, it is important to monitor the dynamics of the system. For this purpose, in real system phasor measurement units (PMUs) have been installed to give information ... -
Identification of Hydro turbine governors using PMU data
(Chapter, 2018)Recent concerns for the frequency quality in the Nordic power system has lead to an increased interest in hydro turbine governors. Among this research have been papers on identification of turbine and turbine governor ... -
Identification, visualization and reduction of risk related to HILP events in power systems
(Chapter, 2019)High Impact Low Probability (HILP) events in the power system can have severe consequences for society. The concept of power system resilience has recently been applied to study such events. The paper discusses the definition ... -
Identifying operational requirements for flexible CCS plant in future energy systems
(Journal article; Peer reviewed, 2016)This paper aims at a discussion of operational requirements for thermal power plants with carbon capture and storage in terms of their interaction with the power system, in regions with high penetration of variable renewable ... -
Idriftsettelse av 200 kW høymomentsrigg og testing av elektriske maskiner
(Bachelor thesis, 2020)Høsten 2019 anskaffet NTNU en høymomentsrigg for testing av elektriske maskinermed lavt turtall. Høymomentsriggen er utstyrt med en 200 kW drivmotor og en 160 kWpermanent-magnet maskin (PM-maskin) som er utskiftbar for ... -
IEC 61850 Goose Managing applications in distribution network protection and automation
(Journal article; Peer reviewed, 2019)Introducing distributed generators into distribution networks creates problems for protection systems like electric island formations or protection blinding. Possible solutions utilizing communication aided automation in ... -
Ikke-desktruktiv tilstandskontroll av kabelskjøter i distribusjonsnett
(Master thesis, 2010)En stor andel av distribusjonsnettet verden over begynner å nå, eller allerede har passert, sin tekniske levetid. I Nord-Amerika er over 20 % av kabelanleggene i distribusjonsnettet (mellomspenningsnettet) eldre enn sin ... -
Image processing and machine learning application for fault diagnosis in synchronous motors
(Master thesis, 2022)Synkronmotor feildiagnose gir innsikt i motorhelse og driftssikkerhet. Diagnostisk analyse utføres vanligvis ved å undersøke endringer i frekvenskomponenter. Denne oppgaven presenterer en bildebehandlings- og maskinlærings ... -
Impact of a Large Implementation of ZEBs in the Norwegian Power System
(Master thesis, 2016)In the Energy Performance of Buildings Directive (EPBD), all new buildings are said to be nearly Zero Energy Buildings (ZEBs) from 2018/2020. A Zero Energy Building is a building that has a lower demand for energy, and is ... -
Impact of Carbon Price on Renewable Energy Using Power Market System
(Chapter, 2020)Reducing anthropogenic greenhouse gas emissions is a critical element to keep global warming below 2 °C. In terms of the IEA report, the largest sources of emission in 2016, which approaches to 42% of global total, is ... -
Impact of CO2 compensation methods on the sizing of PV panels in Zero Emission Neighbourhoods
(Master thesis, 2022)For å nå de satte klimamålene, er en reduksjon i totale CO2-utslippene en nødvendighet. Vinteren 2022 publiserte IPCC the Sixth Assessment Report, Climate Change 2022, en rapport som frem- hevet viktigheten av en rask ... -
Impact of Combining a STATCOM and an Active Filter on the Modular Multilevel Converter Controller
(Master thesis, 2019)Spenningen i et transmisjonsnett kan forbedres ved å installere en STATCOM. Ved å forbedre spenningsnivået øker effektkvaliteten og forsyningssikkerheten blir bedret. Å installere en STATCOM har vist seg å være fordelaktig ... -
Impact of cyber failures on operation and adequacy of Multi-Microgrid distribution systems
(Journal article, 2023)The primary objective of this paper is to create a suitable reliability assessment framework for Cyber–Physical Multi-MicroGrid (CPMMG) distribution systems, considering the device-level failures of control and protection ... -
Impact of cyber failures on operation and adequacy of Multi-Microgrid distribution systems
(Journal article, 2023)The primary objective of this paper is to create a suitable reliability assessment framework for Cyber–Physical Multi-MicroGrid (CPMMG) distribution systems, considering the device-level failures of control and protection ... -
The impact of degradation on the investment and operation of a community battery for multiple services
(Chapter, 2022)The emergence of local energy communities (LECs) introduces new concepts and dynamics to the operations of distribution grids. An important part of LECs is the shared ownership or control of assets such as photovoltaic ... -
Impact of distributed capacitors on voltage profile and power losses in real low voltage distribution networks
(Chapter, 2018)Voltage control in low voltage distribution networks continues to remain an issue of significant importance. The large portion of long overhead lines with high R/X ratio has been the main reason that these circuits were ... -
Impact of energy communities on the European electricity and heating system decarbonization pathway: Comparing local and global flexibility responses
(Peer reviewed; Journal article, 2022)This paper investigates how the European electricity and heating system is impacted when medium-scale energy communities (ECs) are developed widely across Europe. We study the response on the capacity expansion of the ... -
Impact of energy pricing regimes on production schedules under solar-hydro hybridization
(Chapter, 2023)Hybridization of complementary energy production increases system flexibility and allows optimization of energy and resource availability. Hydropower and floating solar photovoltaics (FPV) have a high potential for ...