scholarly journals APLICACIÓN DE LAS REDES INTELIGENTES PARA EL AUMENTO DE LA EFICIENCIA ENERGÉTICA EN LAS REDES ELÉCTRICAS

Author(s):  
Lenin Agustín Cuenca Alava

Abstract: In the presented work stands as a short time ago, the dominant paradigm consisted of universal service and its centralization. In this sense refers to the electricity grid of the future requires a radical and qualitative leap due to the need to better manage energy resources, promote the protection of the environment and respond to increasingly stringent quality of service and product requirements. Arises the concept called smart electricity networks (Smart Grids) which is based in the traditional grid forming electronic devices such as gauges, sensors and controls, among others, linked through different communication technologies, achieving the centralization and the use of the information for  the  benefit  of all  stakeholders, optimizing  the functioning of the electrical system. In this way, it is possible that service companies can efficiently manage their assets and end users to manage their consumption in a rational manner. Is required to enhance it efficiency energy of them networks electric, a management of the energy timely and effective. you are available in a given natural site, due to the limitations explained above. Although she is holding reserves of renewable energy sources, its practical implementation would affect the dynamic performance of power plant front shocks. Index Terms: smart grids, efficiency energy, renewable energy sources, networks electric

2014 ◽  
Vol 18 (3) ◽  
pp. 731-742 ◽  
Author(s):  
Sonja Protic ◽  
Robert Pasicko

Several Western Balkan states face the consequences of the Yugoslavian war, which left hometowns with dilapidated electricity grid connections, a high average age of power plant capacities and low integration of renewable energy sources, grid bottlenecks and a lack of competition. In order to supply all households with electricity, UNDP Croatia did a research on decentralized supply systems based on renewable energy sources. Decentralized supply systems offer cheaper electricity connections and provide faster support to rural development. This paper proposes a developed methodology to financially compare isolated grid solutions that primarily use renewable energies to an extension of the public electricity network to small regions in Croatia. Isolated grid supply proves to be very often a preferable option. Furthermore, it points out the lack of a reliable evaluation of non-monetizable aspects and promotes a new interdisciplinary approach.


ENERGYO ◽  
2018 ◽  
Author(s):  
Thabit S. Nassor ◽  
Masahiko Kina ◽  
Tomonobu Senjyu ◽  
Atsushi Yona ◽  
Toshihisa Funabashi

Energy ◽  
2017 ◽  
Vol 134 ◽  
pp. 1053-1067 ◽  
Author(s):  
Omid Rahbari ◽  
Majid Vafaeipour ◽  
Noshin Omar ◽  
Marc A. Rosen ◽  
Omar Hegazy ◽  
...  

2021 ◽  
Vol 18 (1) ◽  
pp. 39-46
Author(s):  
M. Shuaibu ◽  
A.S. Abubakar ◽  
A.F. Shehu

Renewable energy sources (RES) are being integrated to electrical grid to complement the conventional sources to meet up with global electrical energy demand. Among other RES, Wind Energy Conversion Systems (WECS) with Doubly Fed Induction Generator (DFIG) have gained global electricity market competitiveness because of the flexible regulation of active and reactive power, higher power quality, variable speed operation, four quadrant converter operation and better dynamic performance. Grid connected DFIG-based WECS are prone to disturbances in the network because of direct connection of stator windings to grid. The ability of the Wind Turbine (WT) to remain connected during grid faults is termed the Fault Ride-Through (FRT) capability. The grid code requirement for integrating the DFIG-based WTs to power networks specified that they must remain connected and support the grid stability during grid disturbances of up to 1500 ms. The use of compensation devices offers the best FRT compliance thereby protecting the DFIG and the converters from voltage fluctuations and over currents during the grid fault. The paper presents a review of techniques employed in ensuring FRT compliance. The article also proposes the state-of-the-art techniques for compensating voltage sag/swell and limiting the fault short-circuit current. Keywords: Renewable energy sources, DFIG, wind turbine system, fault ride-through, grid codes, dual-functional DVR


2012 ◽  
Vol 721 ◽  
pp. 185-190 ◽  
Author(s):  
Emmanuel S. Karapidakis ◽  
Antonis G. Tsikalakis ◽  
Yiannis A. Katsigiannis ◽  
Marios Moschakis

In this paper, the impact of high wind power and photovoltaics penetration on the dynamic behavior of an island power system like one operates in Crete is investigated. Several simulations were performed leading to the fact that it is possible to achieve higher level of renewable energy sources penetration without significant dynamic security problems, if power units spinning reserve exists and the corresponding control systems have a sufficiently fast response.


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