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Thermal expansion and contraction of the impregnation oil (the “mass”) in mass-impregnated non-draining HVDC cables cause the internal pressure to vary greatly during load changes. Pressure drops after load turn-off is a concern since formation of shrinkage cavities may reduce the dielectric...

New data are presented for the thermal conductivity for CO₂-rich binary mixtures in the liquid and dense phase, for temperatures between 223 and 308 K and pressures up to 20 MPa. Binary mixtures with mole fractions of 5% nitrogen and 5, 10, and 20% methane were investigated. Understanding the fluid...

As the power system is developing, the need for new cost-efficient grid solutions is increasing. A battery energy storage system (BESS) can prove to be a technically and economically feasible alternative to a grid reinforcement. This paper presents a techno-economic analysis of a BESS used to...

The electrification of the energy sector challenges the conventional methods to meet the increased load demand. The rapid increase of electric vehicles and the desire for shorter charging time at fast charging stations (FCS) contributes to higher power peaks in local distribution grids. This may...

This paper proposes a model to include investments in demand flexibility into traditional transmission expansion problems under uncertainty. To do so, a dynamic power flow model is proposed. The model is solved via applying a value function approximation in form of a neural network on the...

Sintef er med i EU-prosjektet Flexplan, der ulike aktører skal utvikle modeller som gjør det mulig å vurdere fleksibilitet fra ulike kunder i stedet for fysiske nett-oppgraderinger. Når alt skal elektrifiseres, slik at flere har elbil, befolkningen vokser, og nettet eldes vil vi trenge investeringer...

This study investigates the impact of operational fluctuations and uncertainties on the design and expected cost of ship-based CO₂ transport. The model analysis is based on a two-stage stochastic investment model for a single-source single-sink CCS value chain with a ship-based transport system. The...