SHERPEC-Hybrid System of Renewable Energies for Production of Electricity and Climatization

2010 ◽  
Vol 1 (08) ◽  
pp. 1386-1391
Author(s):  
Iolanda Sousa ◽  
José Pereira ◽  
Hernani Alcobia ◽  
Paulo Pereirinha
Keyword(s):  
Hybrid System ◽  
Renewable Energies

ANFIS-Based Control of a Grid-Connected Hybrid System Integrating Renewable Energies, Hydrogen and Batteries

2014 ◽  
Vol 10 (2) ◽  
pp. 1107-1117 ◽  
Author(s):  
Pablo Garcia ◽  
Carlos Andres Garcia ◽  
Luis M. Fernandez ◽  
Francisco Llorens ◽  
Francisco Jurado
Keyword(s):  
Hybrid System ◽  
Renewable Energies

scholarly journals Low Frequency Oscillations in a Hydroelectric Generating System to the Variability of Wind and Solar Power

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1978
Author(s):  
Beibei Xu ◽  
Liuwei Lei ◽  
Ziwen Zhao ◽  
Wei Jiang ◽  
Shu Xiao ◽  
...  
Keyword(s):  
Transmission Line ◽  
Hybrid System ◽  
Solar Power ◽  
Low Frequency ◽  
Renewable Energies ◽  
Stable Operation ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Oscillation Analysis ◽  
Hydropower System

The penetration of multiple integrated renewable energies to the power grid are relevant for decision making in energy policy, environment and business. Such an electricity penetration is affected by the intermittent and volatile characteristics of integrated energies, mostly significantly related to the safe and stable electricity production and supply in real world. Here, this paper focuses on the low frequency oscillation analysis of the hydropower generation response to the wind and solar variability. To enable this analysis, a hybrid model of hydropower system integrating with the wind and solar power system is presented. The Nyquist and root-locus stability methods are used to investigate the sensitivity performance of the hydropower governor to the fluctuation of the integrated renewable energies. Additionally, to quantify the risk of the hybrid system, the low frequency oscillation response of hydropower system to wind/solar/hydropower quota and transmission line distance ratio is extensively investigated in this study. The results show that under the case of the wind, solar and hydropower ratio is 40: 1: 150, the optimal values for maximally reducing hydropower low frequency oscillation are finally determined as kp = 0.8, ki = 0.25 and kd =0.5. Regarding a certain wind/solar/hydropower quota, it is a promising strategy to increase the solar-load transmission line in order to achieve the safe and stable operation of the hybrid system and a relatively excellent dynamic regulation capacity of the hydropower governor. The model, methods and results implemented in this study are exploited to markedly improve new knowledge applications, policy management, low carbon emissions and investment competitiveness of future energy systems.

Analysis of Renewable Energy Power Systems

2015 ◽  
pp. 651-686 ◽  
Author(s):  
Rabeh Abbassi ◽  
Salem Saidi ◽  
Manel Hammami ◽  
Souad Chebbi
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Hybrid System ◽  
Control Strategy ◽  
Renewable Energies ◽  
Power Injection ◽  
Control Scheme ◽  
Storage Batteries ◽  
Unbalanced Grid

Due to different concerns, renewable energies stand out as an opportunity for a sustainable future. Wind/Photovoltaic Hybrid Systems are one important type of renewable energy power systems. In order to increase renewable energies integration rate, this chapter proposes a utility interactive grid-connected wind-PV hybrid system with storage batteries. Facing modern electricity industries, the hybrid system considers the dispatch-ability and the quality of its power injection into the grid. The adopted modeling approach has been based on energy exchange considerations taking into account the converters structures. Particular attention has been given to cases where the hybrid system is connected to an unbalanced grid. This chapter develops a new control strategy, which aims to isolate the hybrid system of the adverse impact of the grid fault. The results point out thoroughly the applicability of the proposed control scheme under unbalanced grid conditions.

Kryothermie-Hybrid-System mit intern gasgekühltem Applikator zur Radiofrequenzablation

2007 ◽  
Vol 179 (S 1) ◽  
Author(s):  
H Rempp ◽  
S Clasen ◽  
M Voigtländer ◽  
S Kempf ◽  
A Weihusen ◽  
...  
Keyword(s):  
Hybrid System

Control of odor using an electrostatic precipitator andadsorption hybrid system in unregulated facilities

2014 ◽  
Vol 13 (2) ◽  
pp. 113-123 ◽  
Author(s):  
Hak-Song Jeon ◽  
◽  
Jong-Min Kim ◽  
Kwang-Han Bae ◽  
Tae-Oh Kim
Keyword(s):  
Hybrid System ◽  
Electrostatic Precipitator

“Collective Redress” in European Competition Law

2016 ◽  
Vol 14 (4) ◽  
pp. 388-414
Author(s):  
Alexandra P. Mikroulea
Keyword(s):  
Hybrid System ◽  
Competition Law ◽  
Mixed System ◽  
Basic Question ◽  
Effective Implementation ◽  
The United Kingdom ◽  
Collective Redress ◽  
Opt Out ◽  
Private Autonomy ◽  
European Competition Law

AbstractOpt-in or opt-out? That is the basic question to be answered. The decision to promote actions of “opt-in” type as opposed to those of the “opt-out” type, for the sake of private autonomy, does not ensure the effective application of european competition law. On the contrary, it may decrease the application’s intensity and effectiveness. Recent reforms among European state members such as in the United Kingdom, Belgium, the Netherlands, Denmark and Norway are powerful indications that the opt-out principle may result in the effective implementation of competition law. There is no doubt that a mixed system (hybrid system), providing the court with the power to decide in favour of either the opt-in or the opt-out system, will result in better implementation of competition law. At the present time there are two pending cases in England (Dorothy Gibson and Mastercard) for which the decision on opt-out or opt-in are highly anticipated. Should the court decide, in one or both of the cases, on an opt-out approach, this will bring a momentous reevaluation of the entire collective redress concept.

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