Documentos de Trabajo: Envíos recientes
Mostrando ítems 121-140 de 2480
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Re-synchronisation of a microgrid to the main grid using multi-agent secondary control
The idea of having self-powered microgrids has often been proposed to take full advantage of distributed generation resources. These microgrids can work either isolated from or connected to the main grid, which brings a ... -
Power flow algorithm using a second-order differentation approach
Load flow is the key tool for most of the studies related with electric power systems operation and planning. For a given electric network and power dispatch, power flow provides the state variables of the system, i.e. bus ... -
Analytical frequency-constrained UC for island power systems
This paper presents a frequency-constrained unit commitment (FCUC) formulation for island power systems. The timely activation of spinning reserve is key to guaranteeing frequency stability in the operation planning phase. ... -
Design and comparison of UFLS schemes of isolated power systems based on frequency stability margin
Increasing penetration of renewable energy resources (RES) affects stability and, in particular, frequency stability of island power systems like the Canary Islands. System protection involves underfrequency load shedding ... -
Enhancing RES grid connection via dynamic hosting capacity and hybridization
Decarbonizing the energy sector requires the rapid integration of significant renewable generation capacity into electricity grids. The enhancement of existing grid capacity, avoiding reinforcement, represents an interesting ... -
Scalability analysis of a wireless M-Bus system for smart metering and sensoring
Wireless M-Bus communication protocol has emerged as one way of implementing smart metering for smart grids and cities. To determine possible applications of this technology in these contexts, its scalability and replicability ... -
Climate-related credit risk: Rethinking the credit risk framework
Climate change poses a significant financial risk to economic agents, as well as a potential systemic risk threat due to uncertainty and non-linearity of the transition risks to a zero-carbon economy. This article conducts ... -
Gender, racialization and sexual orientation: a common ground for aggression in the form of cyberbullying and online hate speech
Bullying and its virtual form, cyberbullying, are often presented as universal phenomena that can be suffered by any student. However, if we look at the risk factors, we find issues such as gender, race or sexual orientation ... -
Who shares fake news? Consumption, verification and dissemination of information among adolescents
The main objective of this study is to find out how adolescents access and share online information, in particular fake news. To achieve this goal, eight focus groups were conducted in five European countries (Portugal, ... -
State relevance and modal analysis in electrical microgrids with 100 grid-forming converters
In traditional power systems, dominated by syn-chronous generators, the separation between time scales is well-known due to the physical response of the generating units. However, the fast-growing deployment of renewable ... -
Knowledge co-creation processes for urban transitions
This systematic literature review explores knowledge co-creation processes, the role of knowledge theory, and its contribution to the sustainability transition of cities. The purpose is related to societal and urban ... -
Capex temporal allocation and cost recovery in long-term generation capacity expansion planning
This work revisits some interesting properties of long-term generation models and sheds light on cost-recovery properties associated to this kind of representations in the framework of marginalist remuneration electricity ... -
Probability density-based energy-saving recommendations for household refrigerating appliances
The power sector is a major contributor to anthropogenic global warming, responsible for 38 of total energy-related carbon dioxide emissions and 66 of carbon dioxide emission growth in 2018. In OECD member countries, the ... -
Analyzing mobility patterns of complex chronic patients using wearable activity trackers: a machine learning approach
This study suggests using wearable activity trackers to identify mobility patterns in Chronic Complex Patients (CCP) and investigate their relation with the Barthel Index (BI) for assessing functional decline. CCP are ... -
Género, sexualidad y online grooming: diferencias en las estrategias de los agresores y en la percepción del riesgo de las víctimas
La ponencia presenta los resultados de una parte de la investigación realizada para el proyecto europeo Horizon 2020 RAYUELA sobre cibercrimen y menores. En concreto, los hallazgos sobre el online grooming analizados desde ... -
Design and sensitivity analysis of underfrequency load-shedding schemes of isolated power systems based on frequency stability margin
The objective of this paper is to tune the parameters of an underfrequency load shedding (UFLS) scheme based on the frequency stability margin (FSM) and compare its performance with the conventional UFLS scheme. The ... -
A two-stage approach to represent the daily LNG carriers unloading in natural gas optimization models
Natural gas is expected to play a key role in the energy system of the next decade since it is one of the mainstays of global energy and can still replace more polluting fuels. At the same time, many countries’ dependence ...