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Koukoula D.,National Technical University of Athens | Dimeas A.L.,National Technical University of Athens | Hatziargyriou N.D.,Technical Chamber of Greece | Hatziargyriou N.D.,National Technical University of Athens
2011 16th International Conference on Intelligent System Applications to Power Systems, ISAP 2011 | Year: 2011

This paper describes an algorithm to deal with the scheduling problem in the Microgrids management. The proposed implementation includes the modelling of domestic electrical devices and takes into account the variable electricity market price. © 2011 IEEE.

Papalexopoulos A.,ECCO International | Vitellas I.,A+ Network | Hatziargyriou N.D.,A+ Network | Hatziargyriou N.D.,National Technical University of Athens | And 4 more authors.
2011 16th International Conference on Intelligent System Applications to Power Systems, ISAP 2011 | Year: 2011

This paper analyzes the behavior of the wind and examines the impact of varying levels of wind penetration on the ancillary services and unit commitment costs for conventional oil-fired generation for an isolated system. The application is based on data for the island of Crete. Three years of minute-by-minute telemetered load, wind speed, and wind generation data were deployed. The study also analyzes the operational impact of curtailing excess wind for security purposes. © 2011 IEEE.

Stathatou P.-M.G.,National Technical University of Athens | Tsoukala V.K.,Technical Chamber of Greece | Papadopoulou M.P.,Technical Chamber of Greece | Stamou A.,Technical Chamber of Greece | And 3 more authors.
Global Nest Journal | Year: 2012

In this paper the results of a preliminary study that investigates water footprint (WF) concept, as a useful tool to address water management problems in cultivated areas are presented. The two basic methodologies reported in the literature, their applicability, benefits and challenges were previously analyzed and evaluated by Tsoukala et al. (2011). A WF calculation for the crops of Messara valley in Crete is presented, so as to examine its contribution to achieving effective agricultural policies. Messara is one of the most important agricultural regions in Greece that faces serious problems in order to meet crop irrigation demand. The conclusions drawn from this analysis showed that WF can provide a transparent framework for the identification of potentially optimal alternatives for efficient water use at river basin catchment level. © 2012 Global NEST Printed in Greece. All rights reserved.

Karfopoulos E.L.,Technical Chamber of Greece | Papadopoulos P.,University of Cardiff | Skarvelis-Kazakos S.,University of Cardiff | Grau I.,University of Cardiff | And 4 more authors.
2011 16th International Conference on Intelligent System Applications to Power Systems, ISAP 2011 | Year: 2011

Electric Vehicles are anticipated to have a considerable percentage of the vehicle market sales in the forthcoming years. The additional energy requirements for charging their batteries may affect the network operation, in terms of stability and reliability, especially when these are synchronized with the system peak demand. This issue will present power system operators with the challenge to efficiently integrate Electric Vehicles into power systems by exploiting their ability to behave as manageable loads. The Multi-Agent System technology has been proven a promising way to manage distributed energy resources in electrical networks. A multi-agent system approach to manage the charging of the Electric Vehicle batteries is described. The types of agents required to satisfy the technical operation and the market participation of Microgrids with Electric Vehicles are provided. © 2011 IEEE.

Fani V.,Technical Chamber of Greece
World hospitals and health services : the official journal of the International Hospital Federation | Year: 2010

Stress is a major obstacle to the healing process and it is partly linked to the quality of the environment. Many examples of healing environments throughout time can confirm the primitive human need for healing or therapeutic facilities. Since the Modern Movement of architecture, hospital design has evolved and adjusted to the changing needs. Nowadays, it is considered to be a function of multiple variables. It is an architect's duty to design an environment (the term environment in this case includes all of its interpretations; natural, built, interior and exterior) that will propose security and will positively affect the recovering patient.

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