Blar i Institutt for elektro, IT, og kybernetikk på tittel
Viser treff 179-198 av 281
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Online Drilling Fluid Flowmetering in Open Channels with Ultrasonic Level Sensors using Critical Depths
(Journal article; Peer reviewed, 2017)In drilling operations, non-Newtonian drilling fluid is continuously circulated in a closed loop. One of the ways to monitor and regulate drilling operations is by accurately measuring the flow rate of circulating drilling ... -
Online estimation of wax deposition thickness in single-phase sub-sea pipelines based on acoustic chemometrics: A feasibility study
(Journal article; Peer reviewed, 2012-10-25)Wax deposition in sub-sea oil producing pipelines is a concern to the oil producing companies. The deposition of wax in pipelines can cause serious economic implications if not monitored and controlled. Several researchers ... -
Open Active Contour Model For Front Tracking Of Detonation Waves
(Journal article; Peer reviewed, 2017)This paper presents an image processing framework for tracking the front of the detonation wave from a sequence of images. The images are captured by high speed camera during a laboratory gas explosion experiment. By ... -
OpenHPL for Modelling the Trollheim Hydropower Plant
(Peer reviewed; Journal article, 2019)An increase of tightly integrated, renewable energy sources with highly varying production leads to a greater need for flexible hydropower plants to “balance” the intermittent production from these sources. From a systems ... -
Optimal control strategies with nonlinear optimization for an Electric Submersible Pump lifted oil field
(Journal article; Peer reviewed, 2013)In an Electric Submersible Pump (ESP) lifted oil field, the ESP of each oil well should be operated inside its operating window. The total power consumed by the ESPs in the oil field should be minimized. The speed of the ... -
Optimal design and operation of a UASB reactor for dairy cattle manure
(Journal article; Peer reviewed, 2015-02-01)Optimal design and operation of a planned full-scale UASB reactor at a dairy farm are determined using optimization algorithms based on steady state simulations of a dynamic AD process model combined with models of the ... -
Optimal Frequency Support of Variable-Speed Hydropower Plants at Telemark and Vestfold, Norway: Future Scenarios of Nordic Power System
(Peer reviewed; Journal article, 2020)The integration of renewable resources is quickly growing in the Nordic power system (NPS), and it has led to increasing challenges for the operation and control of the NPS. Nordic countries require that the first-generation ... -
Optimal Operation of the Peat Drying Process in Steam Tube Dryers
(Journal article; Peer reviewed, 2015-11-25)Ukraine is an energy-dependent country and aims to reduce the import of natural gas, heat, and power in general. This implies extracting fuel from her own natural resources; one relevant and readily available energy carrier ... -
Optimal Settings of Fast Active Power Controller: Nordic Case
(Chapter, 2020)The Nordic power system is continuously changing, and it has been experiencing a growing replacing of conventional power plants with renewable power plants, this together with other factors are causing reduction of the ... -
Optimal Tuning of Active Power Gradient Control for Frequency Support in Multi-Energy Systems
(Chapter, 2020)Coping with severe active power imbalances constitutes a challenging task in low inertia multi-energy systems. The phase out of the majority of conventional power plants with large size synchronous generators entails that ... -
Optimal UFLS Settings: An Assessment of Frequency System Response Indicators
(Chapter, 2020)This paper investigates the positive changes in the system frequency response indicators caused by the implementation of a set of optimal settings of an under-frequency load shedding (UFLS) scheme. The optimal UFLS scheme ... -
Optimal under-frequency load shedding setting at Altai-Uliastai regional power system, Mongolia
(Peer reviewed; Journal article, 2020)The Altai-Uliastai regional power system (AURPS) is a regional power system radially interconnected to the power system of Mongolia. The 110 kV interconnection is exceptionally long and susceptible to frequent trips because ... -
Optimization of lift gas allocation in a gas lifted oil field as non-linear optimization problem.
(Journal article; Peer reviewed, 2012)Proper allocation and distribution of lift gas is necessary for maximizing total oil production from a field with gas lifted oil wells. When the supply of the lift gas is limited, the total available gas should be optimally ... -
Parameter and State Estimation of Large-Scale Complex Systems Using Python Tools
(Journal article; Peer reviewed, 2015)This paper discusses the topics related to automating parameter, disturbance and state estimation analysis of large-scale complex nonlinear dynamic systems using free programming tools. For large-scale complex systems, ... -
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 ... -
Parameter estimation for externally simulated thermal network models
(Peer reviewed; Journal article, 2019)Obtaining accurate dynamic models of building thermal behaviour requires a statistically solid foundation for estimating unknown parameters. This is especially important for thermal network grey-box models, since all their ... -
Parameter estimation for grey-box models of building thermal behaviour
(Journal article; Peer reviewed, 2018)Good models for building thermal behaviour are an important part of developing building energy management systems that are capable of reducing energy consumption for space heating through model predictive control. A popular ... -
Parametric sensitivity analysis of rotor angle stability indicators
(Journal article; Peer reviewed, 2021)With the increasing penetration rate of Power Electronic Converter (PEC) based technologies, the electrical power systems are facing the problem of transient stability since the PEC based technologies do not contribute to ... -
Parametric sensitivity analysis of rotor angle stability indicators: Simulation case
(Journal article; Peer reviewed, 2021)Because power electronic converter (PEC) dominated power generators do not provide the rotational inertia and the proportion of synchronous generators is reducing, the modern electrical grids are confronting a challenge ... -
PCR/PLSR optimization based on noise covariance estimation and Kalman filtering theory
(Journal article; Peer reviewed, 2002)The theoretical connection between principal component regression (PCR) and partial least squares regression (PLSR) on one hand and Kalman filtering (KF) on the other is known from earlier work. In the present paper we ...