Viser treff 2249-2268 av 2474
-
Testing av lysbuevern
(Master thesis, 2016)Hvert år oppstår det mange branner i boliger forårsaket av elektrisitet. Mange av disse brannene er forårsaket av at det elektriske anlegget er feilaktig installert eller at elektrisk utstyr har blitt feilaktig benyttet. ... -
Testing av superledende spoler
(Master thesis, 2009)Tradisjonelle induksjonsovner bruker vekselstrøm for å indusere strømmer og varme opp større aluminiumsdeler. Effektiviteten til ovnene ligger normalt mellom 55-60%, noe som gir et stort forbedringspotensial. Ved å erstatte ... -
Testing of a hydro power plant’s stability and performance using PMU and control system data in closed loop
(Journal article; Peer reviewed, 2019)In response to recent concerns regarding deteriorating frequency quality in the Nordic power system, the Nordic transmission system operators (TSOs) have developed draft requirements for the provision of frequency containment ... -
Testing of an MgB2 coil for a wind turbine generator pole
(Peer reviewed; Journal article, 2021)We report on the testing of a 1 m long and 0.5 m wide racetrack coil wound from 4.5 km of MgB2 tape-shaped superconductors with a copper strip soldered to the nickel matrix. The cross-section of the coil corresponds to ... -
Testing of Insulation Liquids for Subsea Power Converters - Partial Discharge and Breakdown Testing
(Master thesis, 2015)To realise the future subsea power systems, pressure compensated, liquid insulated power converters are subject to development. The liquid insulation provides a higher breakdown strength than air-insulated systems and works ... -
The Academic Version of a Fundamental Market Model
(Master thesis, 2018)In this master thesis, the making of a fundamental market model will take place. To understand the model, there is a chapter that describes the theory behind the calculations in the model. The focus of the model is to ... -
The Assessment of Overvoltage Protection Within Energization of Offshore Wind Farms
(Journal article; Peer reviewed, 2012)The beneficiary of Offshore Wind Farms (OWF) to land wind farms in the sense of more power productivity and land view disturbance leads to more investment and consideration. Nevertheless, the maintenance of OWFs is a ... -
The development of calcGenProg and GenProgApp
(Master thesis, 2021)This report covers the working principals, and development of the improved version of GenProg first created by Alexander Lundseng and Ivar Vikan in 2010. The work described in this report can be considered a direct sequel ... -
The effect of DC superimposed AC Voltage on Partial Discharges in Dielectric Bounded Cavities
(Chapter, 2014)Voltage source converters is used in HVDC stations in offshore HVDC transmission systems, between the AC and DC power grid. The AC ripple voltage on the DC side of the HVDC stations can be in the range of 1-10 % of the ... -
The Future of Fuel Cell Technology in Maritime Applications
(Master thesis, 2020)Fra den industrielle revolusjonen til oljealderen har menneskeheten skapt enorme fremskritt innen produksjon, teknologi og livskvalitet. Dessverre har fremgangen kommet på bekostning av miljøet; og behovet er større enn ... -
The Impact of dividing Sweden into four Bidding Areas
(Master thesis, 2011)In February 2010 extreme power prices occurred in the Nordic power market. The main reason was low availability at Swedish nuclear power plants, high loads due to low temperatures and large reductions in available transmission ... -
The impact of electrification on power system in Northern Europe
(Journal article; Peer reviewed, 2017)Electrification is widely considered as a viable strategy for reducing the negative environmental impacts of the energy system. Following this strategy, most attention has been paid to electrification of road transportation, ... -
The impact of grid tariffs based on demand charges
(Master thesis, 2018)In recent years, there has been an increase in power consumption for the consumers in the distribution grid. The consequence of this, combined with the consumers being inelastic, has forced the distribution system operators ... -
The Impact of Hydrogen Production on the Offshore Wind Business Case
(Master thesis, 2021)The European Union recently decided to increase its climate ambition for 2030 and aims to reach climate neutrality by 2050. Achieving a climate neutral economy involves a vast expansion of European offshore wind and will ... -
The Impact of Offshore Wind Power Variations on Continuous-time Scheduling of a Hydrothermal System
(Master thesis, 2020)Som en del av klimapolitikken, forventes et betydelig omfang av offshore vindkraft å bli integrert i det nordeuropeiske kraftsystemet de kommende årene. Den varierende og i stor grad uforutsigbare kraftproduksjonen fra ... -
The impact of outages on the profitability of HVDC-cables between the Nordic area and the continent using the EMPS model
(Master thesis, 2015)This master thesis investigates sudden HVDC-cable exchange limitations between thermal-based and hydro dominated areas from a market perspective. Thermal-based areas are based on fossil-fired units in combination with large ... -
The impact of policy actions and future energy prices on the cost-optimal development of the energy system in Norway and Sweden
(Journal article; Peer reviewed, 2017)This paper studies the effects of policy actions on the energy systems in Norway and Sweden, including a nuclear shutdown, a cancelation of restricted hydropower and an expansion of export capacity to Europe. This study ... -
The impact of protection system failures and weather exposure on power system reliability
(Chapter, 2019)Extreme weather is known to cause failure bunching in the electrical transmission system. However, protection systems can also contribute to the worsening of the system state through spontaneous, missing or unwanted operation ... -
The impact of protection systems on power system reliability
(SINTEF Energi. Rapport;, Research report, 2014)This report is a collection of memos written to describe the methodology for quantifying the impact of protection systems on power system reliability. Including the effect of protection system response scenarios on a ... -
The impact of time-frequency estimation methods on the performance of wave energy converters under passive and reactive control
(Journal article; Peer reviewed, 2018)A number of wave energy controllers tune the power take-off (PTO) system to the frequency of incident waves. Since real ocean waves are non-stationary by nature and not defined by a single frequency component, the PTO can ...