Sökresultat

I takt med att andelen förnybar el ökar så ökar även efterfrågan på flexibilitet i elnätet. Flexibilitet behövs bland annat för att tillhandahålla frekvensreglering. Om elförbrukningen och elproduktionen tillfälligt är i obalans kommer frekvensen i elnätet att avvika från sitt börvärde. För att skydda mot dessa obalanser upphandlar Svenska Kraftnät flera olika frekvensregleringstjänster. Som ett rAs the penetration of variable renewable energy is increasing, the demand for flexibility in the electrical grid is on the rise. One way in which flexibility is needed is to provide frequency regulation. If electricity consumption and production momentarily are unbalanced there needs to. The Swedish TSO, Svenska Kraftnät, procures multiple different frequnecy regulation services to protect against

When looking at energy supply on a larger scale than to a single building, such as to a neighbourhood or a city, the combined effects of peak power demands can be seen to cause problems on the production side. These can be both economic and environmental and lead to the emission of greenhouse gases when fossil fuels are used to meet these peaks. Encouraging the demand side to reduce their power de

Lithium-ion battery safety is a topic of large importance, and testing is associated with large costs. Safety evaluation is therefore needed also at an early stage in cell design and development, in order to evaluate potential short-comings or to screen large platforms of materials and cells. Previous thermal runaway tests on lab-scale cells have, however, indicated differences in heat release and

Denna masteruppstats ämnar utröna lönsamheten och de faktorer som påverkar lönsamheten vid ingåendet av en kort position i finansiella derivat på den nordiska elmarknaden samtidigt som motsvarade position anskaffas genom handel på Nord Pools day-ahead (DA) marknad och via så kallade pay-as-produce Power Purchase Agreements (PPA), samt genom tillämpandet av batterilager för att mitigera effekterna This master’s thesis aims to assess the profitability and the factors impacting the profitability of entering a short position in financial derivative contracts on the Nordic power market while procuring electricity through a pay-as-produced power purchase contract and on the day-ahead (DA) market, simultaneously the strategy utilizes a battery storage system to mitigate the effects of price spike

The transition to sustainable energy sources is a critical challenge facing Europe as it aims to achieve net-zero greenhouse gas emissions by 2050. This master thesis explores the potential role of fusion energy in the future European energy market, focusing on Novatron Fusion Group's strategic positioning within this evolving landscape. The study uses a mixed methods approach, combining both

Energilösningen för Framtiden: Vattenpumplagring & Vindkraft Genom åren har användningen av fossila bränslen minskat, samtidigt som vi sett en ökning av förnybara energikällor som vindoch solkraft. Sverige står dock inför en utmaning: vindens oförutsägbara natur skapar problem för elnätets stabilitet. Denna rapport utforskar möjligheterna kring el-lagring genom vattenpumplagring kopplat till

The increasing focus on lithium-ion batteries (LIBs) in the context of electrification of transport sector has raised concerns about their high costs, resource and energy demands, environmental impact, and social supply chain risks. To address these challenges and maximize the value of LIBs throughout their lifecycle, circular economy (CE) strategies, such as reusing and repurposing, are being exp

With the growing integration of renewable energy sources into the power grid, new challenges for system stability have emerged. To address this, the European Union has introduced a regulation called Requirements for Generators (RfG). This regulation sets specific performance standards, one of which is a minimum critical clearing time related to faults. Some production facilities with low inertial

Reciprocating compressors hold great promise for enhanced efficiency across a wide variety of microscale and macroscale systems. This article investigates the potential of isothermal compression strategies by introducing two modeling approaches for the time-dependent analysis of reciprocating compressors. First, a thermodynamic model is developed based on conservation of mass and energy for a cran

MXenes are technologically interesting 2D materials that show potential in numerous applications. The properties of the MXenes depend at large extent on the selection of elements that build the 2D MX-layer. Another key parameter for tuning the attractive material properties is the species that terminate the surfaces of the MX-layers. Although being an important parameter, experimental studies on t