Documentos de Trabajo: Recent submissions
Now showing items 2201-2220 of 2477
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Store: a comprehensive research and demostration project on the application of energy storage systems in island power systems
Island power systems exhibit distinct features with respect to interconnected ones due to their isolated nature and small size and the cost of the fuel for power generation. Endesa has led a research and demonstration ... -
Forecasting functional time series in electricity markets with a seasonal ARIMAX Hilbertian model
A functional time series is the realization of a stochastic process where each observation is a continuous function defined in a finite interval. In order to forecast these functions, a seasonal ARIMAX Hilbertian model is ... -
Fast front transients in transformer connected to gas insulated substations: (white%2Bblack) box models and TDSF monitoring
Protection to fast front transients of power transformers connected to Gas Insulated Substations (GISs) requires not only detailed model of the GIS but also of the power system components connected to it including the power ... -
Implicit and explicit state space models of power transformers for fast front transient simulations
Design of power transformers with respect to fast front transients requires appropriate simulation models. Transformer manufacturers have developed detailed transformer modes for their internal use. Such models are described ... -
The role of risk aversion and market completeness in gas and electricity investment coordination issues
Given the increasing dominance of natural gas in the US electric power systems, the traditional concern of electricity regulators to ensure that market agents take efficient power plant investment decisions expands to ... -
Long-term Spanish electricity market price forecasting with cointegration and VEC models
Commodity and electricity price models are motivated by the several unexpected evolutions that commodity prices have shown over the previous decades. Several models are based on the classic Black-Scholes model, which was ... -
Implementación y evaluación del periodo libre de contienda en PRIME
PRIME (PoweRline Intelligent Metering Evolution) es una tecnología ampliamente desplegada en la última milla de las infraestructuras de medición avanzada (AMI) en España (Iberdrola, Unión Fenosa), además de estar en proceso ... -
La red temática REDYD-2050: objetivos, tecnologías y propuestas para facilitar la integración de pequeños y medianos usuarios en las smart grids
Las futuras redes eléctricas necesitan ser flexibles en el lado de la demanda para que la política energética de la UE sea creíble, sobre todo en lo que se refiere a la integración de mayores porcentajes de renovables. Por ... -
Test bench validation of an excitation booster for enhacement of fault ride through capability of synchronous generators
This paper describes the test bench validation of an ultracapacitor based excitation booster aimed at improving the fault ride through capability of synchronous generators equipped with bus fed static excitation systems. ... -
Optimizing storage operations in transmission-constrained networks for medium-and long-term operation
The main objective is to present a new approach to model the storage operation in the context of Medium-and Long-term Operational Planning (MLTOP). This approach is based on the system-state framework but including ... -
Implementation of a voltage sag generator for synchronous generator tests
A new Voltage Sag Generator (VSG) to test synchronous generators Fault Ride Through (FRT) capability as required by grid codes is proposed. This VSG consists of an electronically controlled tap changer transformer that ... -
Normal power generation area of wind turbines for the detection of abnormal performance
This paper presents a method for the possible detection of abnormal performance of a wind turbine based on real observed pairs of wind speed and generated power. Usually the power curve satisfies this objective but its use ... -
Centralized vs distributed generation. A model to assess the relevance of some thermal and electric factors. Application to the Spanish case study
Deployment of Distributed Energy Resources (DER) in electrical networks is full of controversies. Advantages of DER have been largely addressed in the literature. Original reasons for centralized paradigm and the problems ... -
Full active-reactive DC power flow model with loss compensation
This paper formulates a generic DC approximation of the full active-reactive AC power flow problem. This novel approximation includes a novel linear reactive DC model than can be used to estimate bus voltage magnitudes and ... -
Compact lines with pivoted insulated cross-arms. General stability design criteria
Line compaction is a subject of increasing interest due to the difficulties of obtaining new Rights-of-Way (ROW) and therefore the need of reducing ROW widths and increasing the power transmitted within a certain ROW. Among ... -
The water-energy nexus: review of current studies and recommendations for future development of integrated assessments
The aim of this paper is to review existing studies and models which address the interdependencies of water and energy resources. Freshwater is becoming a limited resource in some parts of the world as a result of an ... -
Exploring Spain's water security options in the face of uncertain climate and energy futures. An integrated water-energy analysis
The World Resource Institute estimates that Spain will become a severely water stressed region by 2030 in all of its future scenarios considered. Getting water to the south-eastern basins will become a top political concern ...