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PSCAD Simulation of Distance Protection Performance in a Grid with Inverter Interfaced Generation
(Master thesis, 2020)I denne oppgaven har ytelsen til distansevern i et kraftnett med vekselretter-tilkobede produksjonskilder blitt studert gjennom simuleringer i PSCAD. Statnett forventer at problemer for distansevern vil oppstå i nærheten ... -
PSCAD Simulations of Distance Protection Performance in a Grid with high Wind Power Penetration
(Master thesis, 2022)Distansevern anses å være det mest pålitelige vernet når det kommer til å beskytte høyspentlinjer. Dette er kanskje ikke tilfelle lenger, da andelen av fornybare energikilder blir en vesentlig større del av kraftsystemet. ... -
Pumpe- og turbinkarakteristikker i fire kvadranter
(Master thesis, 2014)Reversible pumpeturbiner blir i økende grad brukt for å balansere kraftproduksjonen. Den økte bruken av reversible pumpeturbiner gjør også at det er nødvendig med bedre kjennskap til hvordan maskinen oppfører seg i uønskede ... -
PV systemer i distribusjonsnettet
(Master thesis, 2014)I denne masteroppgaven er distribuert produksjon fra fotovoltaiske systemer studert ved modellering og simulering av produksjon i en radial i distribusjonsnettet til Hafslund Nett. Med den store økningen av distribuert ... -
Quantifying fairness in Local Energy Markets
(Master thesis, 2023)Integreringen av fornybare energikilder, som er avgjørende for å nå FNs bærekraftsmål, byr på utfordringer hvis den ikke forvaltes riktig innenfor dagens strømnett. Lokale energimarkeder (LEMs) dukker opp som et potensielt ... -
Quantifying the benefits of shared battery in a DSO-energy community cooperation
(Peer reviewed; Journal article, 2023)Local energy communities are forming as a way for prosumers and consumers to invest in distributed renewable energy sources, community storage and share electricity. Meanwhile, several distribution grids have voltage ... -
QUANTIFYING THE CAPACITY VALUE OF WIND POWER IN COMPOSITE POWER SYSTEMS
(Master thesis, 2022)Fornybar kraft er en voksende ressurs, og er en viktig faktor for fremtiden av kraftsystemplanlegging. Det siste tiåret har vindkraft og solcelleanlegg vært den raskeste voksende energiressursen på markedet. Både vindkraft ... -
Quantifying the Impact of Integrating Wind Power on Composite Power System Reliability
(Master thesis, 2021)Grunnet globale tiltak for å bremse klimaendringene har andelen installasjoner av fornybare energikilder i verden økt kraftig, med vindkraft som den ledende energikilden. Den leverte elektriske kraften fra vindkraftanlegg ... -
Quantifying the Impact of Integrating Wind Power on Composite Power System Reliability
(Master thesis, 2021)Due to global efforts to combat climate change, renewable energy is currently seeing a boom in growth, with wind energy leading the way. Electric power generation from wind energy is different compared to that from ... -
Quantitative Analysis of Bidding Strategies and Decision Parameters: Short-term Hydropower Scheduling
(Master thesis, 2014)Norwegian hydropower producers bid to sell tomorrows power in the day-ahead auction called Elspot, at the Nordic power exchange, Nord Pool Spot. Price and inflow are stochastic variables, as well as important decision ... -
A quasi-offline condition monitoring method of DC-link capacitor banks in accelerator power converters
(Chapter, 2022)This paper proposes a condition monitoring scheme for DC-link electrolytic capacitors used innregenerative medium power converters. The monitoring scheme is based on capacitor bank voltage measurements in quasi-offline ... -
The Race to Realize Small Modular Reactors: Rapid Deployment of Clean Dispatchable Energy Sources
(Journal article; Peer reviewed, 2024)Small modular reactors (SMRs) are currently touted as the next evolution of nuclear energy. They are a type of nuclear reactor designed to be smaller in size than a traditional reactor. Nevertheless, they are based on the ... -
Rapid 3-D Magnetic Integral Field Computation of Current-Carrying Finite Arc Segments with Rectangular Cross-Section
(Journal article; Peer reviewed, 2020)The computation of three-dimensional (3-D) magnetic fields is a demanding task in the analysis of electrical machines and other electromagnetic devices. In this context, integral field calculation provides a smooth solution, ... -
Re-synchronization of Universal Droop Control Distributed Generation Inverter to the Grid
(Chapter, 2019)The distributed generation (DG) inverters can operate in an islanded mode and a grid-connected mode. Under grid fault conditions, the inverter is disconnected from the main grid and operates in the islanded mode. When DG ... -
Reactive Power and Voltage Control of Offshore Wind Farms
(Master thesis, 2014)There are several challenges related to reactive power and voltage control of HVAC transmission from offshore wind farms to the main grid, which need to be addressed when designing wind farms. One challenge is the variation ... -
Reactive Power Compensation and Active Filtering Capabilities of the Step-down AC Chopper
(Master thesis, 2013)The Step-down AC Chopper (hereby referenced as "AC Chopper") has been presented in recent academic papers as a possible solution for reactive compensation. The goal of this project was to investigate and evaluate the ... -
Reactive Power Compensation using a Matrix Converter
(Master thesis, 2010)This Master's thesis investigates a new application for the matrix converter: Shunt reactive power compensation. The suggested Matrix Converter-based Reactive power Compensation (MCRC) device is composed of a matrix ... -
Reactive Power Considerations in Reliability Assessment of Power Systems
(Master thesis, 2021)ormålet med denne avhandlingen er å implementere en ikke-sekvensiell Monte Carlo-simuleringsmetode med bruk av AC optimal lastflyt i Python. Videre implementeres en metode som tar hensyn til reaktiv effekt i pålitelighetsstudier ... -
Reactive Power Considerations in Reliability Assessment of Power Systems
(Master thesis, 2021)Formålet med denne avhandlingen er å implementere en ikke-sekvensiell Monte Carlo-simuleringsmetode med bruk av AC optimal lastflyt i Python. Videre implementeres en metode som tar hensyn til reaktiv effekt i pålitelighetsstudier ... -
Real time hardware-in-the-loop comparison of frequency estimation techniques in application to ROCOF based islanding detection
(Journal article; Peer reviewed, 2018)Rate of change of frequency (ROCOF) is one of the most common islanding detection techniques because of its simplicity and economical benefits. However, it does need thorough considerations to avoid mis-operations of ROCOF ...