Hydropower reservoirs are key elements in the energy system by the provision of flexible energy services. They are expected to play an even more important role in a fully renewable system with an increasing share of intermittent sources, such as wind and solar power. Besides the production of...
Denne rapporten har som formål å undersøke muligheten for en spennings-reguleringsstrategi som minimerer overføringstapet i distribusjonsnettet. Tanken bak en slik spenningsreguleringsstrategi er å regulere spenningsnivået i distribusjonsnettet periodevis høyt og lavt for å optimalisere...
It was previously shown that the superdroplet algorithm for modeling the collision-coalescence process can faithfully represent mean droplet growth in turbulent clouds. But an open question is how accurately the superdroplet algorithm accounts for fluctuations in the collisional aggregation process...
Emerging negative emission technologies (NETs) are considered as effective measures to reduce carbon dioxide emissions to achieve the climate goal set by the Paris Agreement, and bioenergy with carbon capture and storage (BECCS) is one of the most important NETs. Integrating CO2 capture with biomass...
IEC 61850 is the present standard recommended for the power system substations. The transition to IEC 61850 challenges the classical approaches of substation engineers especially regarding ensuring a high level of trustfulness in the communication. This paper presents a method for detecting and...
The paper aims to address the potential of low-carbon and renewable hydrogen in decarbonizing the European energy system; specifically, reducing emissions by 55% in 2030 compared to 1990, and targeting net-zero emissions by 2050. The methodology relies on a cost-optimization modelling approach using...
The dry ice sublimation process of carbon dioxide (CO2 ) is a unique, environmentally friendly technology that can achieve a temperature of −56 ◦C or lower, which is a triple point of CO2 in CO2 refrigeration systems. In this study, a cyclone separator-evaporator was proposed to separate dry...
The production of silicon is an energy-intensive process, which requires high temperatures. Sudden release of high-temperature gas to the exhaust system is an inevitable part of silicon furnace operation and causes strong fluctuations in the waste heat recovery system. This makes waste heat recovery...
Sustainability and traceability of food products have received increased attention due to food safety, consumer demand on knowledge of the origin of their food and reducing food fraud. In recent years, traceability systems have been used to document and share sustainability information in food...
This paper investigates the use of data-based model validation for detecting the source of forced oscillations in power systems due to power plant governors. The underlying idea is that models that correctly reproduce the behavior of a component under normal conditions will not explain the behavior...
The H2020 project FlexPlan considers the development and validation of an innovative grid planning tool. In this paper, we present the methodology used in the simulation toolchain and preliminary results for optimal power flow simulation performed in four different regional cases covering most parts...