Browsing USN Open Archive by Author "Øyvang, Thomas"
Now showing items 1-15 of 15
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A Symmetric Review of Reactive Power Market Mechanism for Pricing
Uchchus, Sibbir Ahmed (Master thesis, 2024)This thesis paper aims to explore various market mechanisms and pricing strategies for reactive power, assess operational regulations, and conduct a comparative analysis of these elements across different market setups. ... -
Calibration and testing methodology of mobile battery systems
Islam, Md Nazrul (Master thesis, 2024)The growing sector of high-power mobile battery systems offers flexible solutions for power delivery to diverse industrial applications at geographical locations that can vary over time. Unlike traditional stationary battery ... -
Data acquisition application with implemented digital twin based on thermal and electrical parameters and state estimation of a real synchronous generator
Strøm, Fredrik Andre (Master thesis, 2023)Synkrongeneratoren er en viktig del av det elektriske kraftsystemet. Under normale driftsforhold har generatorenhetene effekttap som påvirker maskinens effektivitet og driftstemperaturer. Mekanistiske modeller av generatoren ... -
Enhanced Power Capability of Generator Units for Increased Operational Security using NMPC
Øyvang, Thomas; Nøland, Jonas Kristiansen; Sharma, Roshan; Hegglid, Gunne John; Lie, Bernt (Peer reviewed; Journal article, 2019)The ever-increasing penetration of intermittent energy sources introduces new demanding operating regimes for the bulk power generation in the power grid. During a worst-case power system disturbance scenario, the generator ... -
Future Operational Regimes of Bulk Power Generation in The Era of Global Energy Transition: Grid Codes, Challenges and Open Issues
Nøland, Jonas Kristiansen; Leandro, Matteo; Nysveen, Arne; Øyvang, Thomas (Chapter, 2020)This paper explores the effects of the ongoing energy transition on the classical bulk power generation. The rapid increase in renewable penetration changes the role of grid-connected generators significantly. Large machines ... -
High current arc erosion on copper electrodes in air
Øyvang, Thomas; Fjeld, Elin; Rondeel, Wilhelm; Hagen, Svein Thore (Journal article; Peer reviewed, 2011)An arc fault inside metal enclosed switchgear will cause the pressure to rise and vaporization of electrode material may contribute to the pressure rise. An experimental study of high current arc erosion on copper electrodes ... -
Modeling of hot-spots in transformer using analytical or numerical methods
Muneeb, Muhammad (Master thesis, 2023)Due to the increasing penetration of renewable energy sources into electrical grids, high variation of power becomes a problem for the stability of power systems. To keep the system balanced, hydro generators occasionally ... -
Optimal Energy Management Strategies for Data Centers
Bohara, Sandhya (Master thesis, 2024)Data centers, the heart of the digital infrastructure, have been an integral part of daily life. It is expected that demand for cloud computing will rise due to the industry's rapid growth and AI scale-up. This thesis ... -
Optimal route management for mobile energy storage considering construction sites
al Mamun, Shamim (Master thesis, 2024)The construction sector is gradually increasing its energy requirements due to the growing scale of projects worldwide, including in Norway. This has led to a need for renewable energy solutions, particularly Mobile Energy ... -
Optimal Scheduling for Mobile Battery Charging Systems
Wagle, Dhanush (Master thesis, 2022)A pilot project in Norway is currently being examined to give electric energy to construction sites in places where connection to the power grid is not available. This thesis proposes a generic mobile battery charging ... -
Power System Stability Using Modelica
Øyvang, Thomas; Winkler, Dietmar; Lie, Bernt; Hegglid, Gunne John (Journal article; Peer reviewed, 2014-12-09)This paper is concerned with power system modeling using the Modelica language in comparison to a traditional simulation tool. Though most common power system simulation tools are computationally efficient and reasonably ... -
Sensitivity analysis of low voltage distribution grid in rural areas with high penetration of PV systems
Berger, Anders (Master thesis, 2022)PV systems are one of the most increasing renewable energy sources globally. In Norway, PV systems increase in amount and size, and it is becoming more critical to have solid knowledge in incorporating them into older grid ... -
State Estimation of a Thermal Model of Air-cooled Synchronous Generator
Pandey, Madhusudhan; Øyvang, Thomas; Lie, Bernt (Peer reviewed; Journal article, 2019)In this paper, we extend a previous study on a totally enclosed thermal model of a synchronous generator, with temperature state estimation using experimental data. The extension includes a new formulation of the system ... -
Thermal model parameter estimation of a hydroelectric generator using machine learning
Melfald, Emil (Master thesis, 2020)The synchronous generator have a central role in the power system, and is governed by multi-physics behaviour. A digital twin of the synchronous generator can lead to more efficient utilization in a more safe and reliable ... -
Transient stability of fault ride through capability of a transmission system of a distributed hydropower system
Manjula, Edirisinghe V. P. J.; Øyvang, Thomas; Hegglid, Gunne John (Journal article; Peer reviewed, 2017)This paper describes the Fault Ride Through (FRT) capability of generators of a part of the 132 kV high voltage power network in Telemark region, Norway using a simplified power system simulator model. The organization, ...