Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Long-term planning models are useful to describe future energy and technology options and to analyze environmental issues. They propose solutions for meeting future energy consumption. Focusing on the electricity sector, we argue that in order to provide a more relevant assessment of the power supply system ahead we need to tackle both flexibility needs and network reliability. On the one hand, flexibility...
This paper provides a reflection on the potential contribution of scientific computing with a view to improving energy system efficiency. First, we will consider energy efficiency globally in order to evaluate its potential. We will then focus on electricity, since electrical energy is interpreted as the universal vector of work. This will give us the understanding we need for envisaging a more efficient...
Saving energy is an essential lever in cutting our greenhouse gases emissions. Worldwide, the building sector is responsible for 40% of energy consumption. We focus on the French commercial sector in order to assess the gains that could be made by using smart building techniques over the long term (2030-2050). We use a long-term planning model based on a Markal/Times approach. We develop a specific...
Following the European Council decision of March 2007, the European Union's common climate protection target for 2020 is a 20% reduction in GHG emissions. In order to acknowledge the related adjustments, opportunities and disadvantages for electricity generation associated with the design of energy policy goals, this paper explores different carbon mitigation policies over the next decades in the...
Island territories are often blessed with abundant renewable resources, but tend to depend mainly on imported petroleum products for power generation, as shown by a comparative study of several islands' energy mixes. Furthermore, power supply is usually less reliable on islands. Increasing the share of intermittent renewables like sun or wind could worsen grid stability problems. However, technical...
Long term planning models provide plausible options to meet the upcoming energy consumption. Focusing on the electrical sector, we argue that a suitable representation of dynamic dissipative processes over the electrical network is central to a relevant evaluation of supply structures. We introduce the notions of conveying and reliability losses and their qualitative impacts on power transmission...
The goal of passive source localization is to acoustically detect objects producing noises by multiple sensors (e.g. microphones, hydrophones) and to estimate their position using only the sound information. While within the last four decades a lot of work was carried out on how to best measure the time delay of arrivals (TDOAs) and on finding an optimal location estimator, relatively little work...
This paper deals with nonlinear non symmetric Riccati equations which integrate a negative linear term involving a scalar gain. This type of equations is recurrent when dealing with computed torque schemes and may be used for other applications in control theory. We show that if the gain is beyond a given threshold (depending on the matrices involved in the system) then there exists a bounded solution...
In order to optimize the estimation of an object's position, this paper proposes a procedure for placing acoustical sensors in 3D space, using passive source localization. A standard performance measure in estimation theory is the Cramer-Rao Lower Bound (CRLB), which describes the lower bound of the variance of unbiased estimators. In the case of passive source localization, this bound depends on...
The local laws of electromagnetism are derived from a reversible transfer of the global power exchanged throughout the electrical network. Two kinds of devices are identified: (i) those dedicated to power conversion; and their (ii) couplings involved in transmission lines, distribution busways, cablings and connections. While the finite element method appears to be the natural design tool in the former,...
In order to provide a "multi-scale" design of the power electrical systems, two kinds of devices are identified: (i) those dedicated to power conversion; and their (ii) couplings. While the finite element method appears to be the natural design tool in the former, the so-called PEEC method is the more suitable in the latter. All devices should achieve EMC and design should be sought within...
The local laws of electromagnetism are derived from the optimization of the global mechanical power exchanged throughout the electrical network. Two kinds of devices are identified: (i) those dedicated to power conversion; and their (ii) couplings involved in transmission lines, distribution busways, cablings and connections. While the finite element method appears to be the natural design tool in...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.