Institutt for elektro, IT, og kybernetikk: Nye registreringer
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Parameter Estimation for a Gas Lifting Oil Well Model Using Bayes' Rule and the Metropolis–Hastings Algorithm
(Peer reviewed; Journal article, 2022)Oil well models are frequently used in the oil production process. Estimation of unknown parameters of these models has long been a question of great interest in the oil industry field. Data collected from an oil well ... -
Security Constrained Unit Commitment and Economic Dispatch by AC Sensitivity Factors
(Chapter, 2022)The dispatch schedule of the electrical power plant units is the result of the solution to the unit commitment optimisation problem, and it minimises the cost of production considering pre-defined technical limits. The ... -
Comparison of AC-Superconducting Multi-Phase Symmetric-Winding Topologies for Wind Power Generators with PM Rotors
(Peer reviewed; Journal article, 2022)In this paper, an AC superconducting multi-phase symmetric-winding machine is designed for a wind power generator to improve its performance and reduce losses, where four handpicked topological designs were explored and ... -
Load prioritization technique to guarantee the continuous electric supply for essential loads in rural microgrids
(Peer reviewed; Journal article, 2021)Microgrid (MG) is one of the practical and best concepts to provide energy access to rural communities, where electric grid extension is not techno-economically feasible. Since the trend of load consumption is not uniform ... -
Short-Term Production Optimization for Electric Submersible Pump Lifted Oil Field With Parametric Uncertainty
(Peer reviewed; Journal article, 2023)This paper uses a scenario-based optimization method to address the Daily Production Optimization from an Electric Submersible Pump lifted oil field under the presence of uncertainty. The primary contribution of this work ... -
A robust model predictive control with constraint modification for gas lift allocation optimization
(Peer reviewed; Journal article, 2023)This paper presents a novel approach for implementing a robust real-time optimization framework under the presence of parametric uncertainty. Conservativeness is an inevitable drawback of a robust control approach. Therefore ... -
Enhanced demand side management for solar-based isolated microgrid system: Load prioritisation and energy optimisation
(Peer reviewed; Journal article, 2023)A novel control mechanism is presented for rural microgrids, standing out in the current literature with its advanced approach to load prioritisation and energy allocation. The system's main goal is to maximise energy ... -
Power Sharing in Three-Level NPC Inverter Based Three-Phase Four-Wire Islanding Microgrids With Unbalanced Loads
(Peer reviewed; Journal article, 2023)The droop-based control schemes are widely used for power-sharing and control of the isolated microgrids. The conventional droop control scheme with inner current and voltage controllers can work effectively under ideal ... -
Demonstration of CO2 Capture Process Monitoring and Solvent Degradation Detection by Chemometrics at the Technology Centre Mongstad CO2 Capture Plant
(Peer reviewed; Journal article, 2023)Solvent management is one of the important current challenges in post combustion carbon capture (PCC) technology development. Using large-scale 1960 h test campaign data (Technology Centre Mongstad, Norway, 2015 MEA Test), ... -
Sustainability analysis and simulation of a Polymer Electrolyte Membrane (PEM) electrolyser for green hydrogen production
(Chapter, 2023)In recent years, green hydrogen has emerged as an important energy carrier for future sustainable development. Due to the possibility of not emitting CO2 during its generation and use, hydrogen is considered a perfect ... -
DroneLibrary: Multi-domain Drone Modeling in Modelica
(Chapter, 2023)In the development of complex, novel electrified aerial systems such as Unmanned Aerial Vehicles (UAVs) and electric vertical take-off and landing (eVTOL) systems, multi-domain modeling and simulation studies can provide ... -
Digital twin in power system research and development: Principle, scope, and challenges
(Peer reviewed; Journal article, 2023)In order to address the issues that arise in modern power systems, such as system dynamics, stability, control, efficiency, reliability, economy, planning and policy, and so on, efforts have been made to develop new tools ... -
Day-ahead energy-mix proportion for the secure operation of renewable energy-dominated power system
(Peer reviewed; Journal article, 2024)Advancements in various scientific fields have encouraged the development of novel tools, techniques, components, methodologies, and innovations aimed at addressing the challenges encountered in modern power systems dominated ... -
Physics-Informed Gas Lifting Oil Well Modelling using Neural Ordinary Differential Equations
(Peer reviewed; Journal article, 2023)Modelling of oil well systems is important for a wide range of petroleum scientific and oil industrial processes. Considering the uncertainty of the measurements and the demand for empirical knowledge, a purely first-principle ... -
Petroleum dependence in developing countries with an emphasis on Nepal and potential keys
(Peer reviewed; Journal article, 2023)The use of petroleum as a leading source across the globe accounts for overall energy demand. However, despite what may appear to be a declining contribution of petroleum to the world's energy supply, overall consumption ... -
Prescriptive analytics for optimal multi-use battery energy storage systems operation: State-of-the-art and research directions
(Peer reviewed; Journal article, 2023)This paper presents the state-of-the-art and latest advances in implementing multi-use practices on BESS applications to the power system grid. Representative papers on modeling and optimization methods were selected, most ... -
Co-simulation-based optimal reactive power control in smart distribution network
(Peer reviewed; Journal article, 2023)The increasing integration of distributed energy resources such as photovoltaic (PV) systems into distribution networks introduces intermittent and variable power, leading to high voltage fluctuations. High PV integration ... -
Comparison of simple projection methods (OPLS, PLSO, and TP) for separation of predicting and non-predicting information in PLSR and PCR, with focus on DA
(Peer reviewed; Journal article, 2014)Orthogonal projections to latent structures (OPLS) and target projection (TP) are two alternative methods for separation of predicting and non-predicting parts of the predictor matrix in partial least squares regression ... -
Microevolutionary system identification and climate response predictions by use of BLUP prediction error method
(Peer reviewed; Journal article, 2023)Animals and other organisms in wild populations may adjust to climate change by means of plasticity and evolution, and it is an important task to find the contributions from each of these effects. Attempts to solve this ... -
A BLUP derivation of the multivariate breeder’s equation, with an elucidation of errors in BLUP variance estimates, and a prediction method for inbred populations
(Peer reviewed; Journal article, 2022)The multivariate breeder's equation, Lande (1979), was derived from the Price equation Price (1970,1972). Here, I present a derivation based on the BLUP (best linear unbiased predictions) equations in matrix form, first ...