scholarly journals Italy: network costs versus decentralised system

10.5334/bcf.h ◽  
2020 ◽  
pp. 113-132
Author(s):  
Michele Gaspari ◽  
Arturo Lorenzoni
Keyword(s):  
Network Costs ◽  
Decentralised System

scholarly journals Comparison of Economical and Technical Photovoltaic Hosting Capacity Limits in Distribution Networks

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2405
Author(s):  
Samar Fatima ◽  
Verner Püvi ◽  
Ammar Arshad ◽  
Mahdi Pourakbari-Kasmaei ◽  
Matti Lehtonen
Keyword(s):  
Power Distribution ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Power Distribution Networks ◽  
Network Losses ◽  
Network Costs ◽  
Cost And Benefit Analysis ◽  
Cost Parameters ◽  
The Cost ◽  
Pv Penetration

Power distribution networks are transitioning from passive towards active networks considering the incorporation of distributed generation. Traditional energy networks require possible system upgrades due to the exponential growth of non-conventional energy resources. Thus, the cost concerns of the electric utilities regarding financial models of renewable energy sources (RES) call for the cost and benefit analysis of the networks prone to unprecedented RES integration. This paper provides an evaluation of photovoltaic (PV) hosting capacity (HC) subject to economical constraint by a probabilistic analysis based on Monte Carlo (MC) simulations to consider the stochastic nature of loads. The losses carry significance in terms of cost parameters, and this article focuses on HC investigation in terms of losses and their associated cost. The network losses followed a U-shaped trajectory with increasing PV penetration in the distribution network. In the investigated case networks, increased PV penetration reduced network costs up to around 40%, defined as a ratio to the feeding secondary transformer rating. Above 40%, the losses started to increase again and at 76–87% level, the network costs were the same as in the base cases of no PVs. This point was defined as the economical PV HC of the network. In the case of networks, this level of PV penetration did not yet lead to violations of network technical limits.

Local implementation of accountability instruments in the French-speaking community of Belgium

2019 ◽  
Vol 19 (2) ◽  
pp. 94-108 ◽  
Author(s):  
Samir Barbana ◽  
Xavier Dumay ◽  
Vincent Dupriez
Keyword(s):  
System Level ◽  
The Political ◽  
Political Environment ◽  
Specific Nature ◽  
Local Contexts ◽  
Significant Process ◽  
French Speaking ◽  
Political Demand ◽  
Decentralised System

This article aims to understand how new accountability instruments in the context of the French-speaking Belgian educational system are appropriated by schools. After having characterised the specific nature of those instruments in the context of a traditionally highly decentralised system involved in a significant process of centralisation, we identify their effects through the case study of three schools. Using a new institutionalist lens, the analyses show that these instruments refer, in the French-speaking Belgian context, to a specific demand from the political environment of schools: developing and framing a common educational landscape, rather than to a logic of teacher evaluation. The data also indicate a reaffirmation, against this specific political demand, of three traditional ways of functioning tied up to the requests made by local educational communities. Thus, the analyses show a conflict between inherited institutions highly embedded in local contexts and the political signal associated with the new accountability instruments aiming to institutionalise common norms at the system level.

Distribution network costs under different penetration levels of distributed generation

2010 ◽  
Vol 21 (6) ◽  
pp. 1869-1888 ◽  
Author(s):  
Rafael Cossent ◽  
Luis Olmos ◽  
Tomás Gómez ◽  
Carlos Mateo ◽  
Pablo Frías
Keyword(s):  
Distributed Generation ◽  
Distribution Network ◽  
Network Costs

A decentralised system approach for controlling AGVs with ROS

2017 ◽  
Author(s):  
Robert Walenta ◽  
Twan Schellekens ◽  
Alexander Ferrein ◽  
Stefan Schiffer
Keyword(s):  
System Approach ◽  
Decentralised System

scholarly journals A New Heuristic Method for Transportation Network and Land Use Problem

2016 ◽  
Vol 8 (3) ◽  
pp. 94 ◽  
Author(s):  
Mouhamadou A.M.T. Bald ◽  
Babacar M. Ndiaye
Keyword(s):  
Land Use ◽  
Transportation Network ◽  
Heuristic Method ◽  
Optimization Techniques ◽  
Geographical Information ◽  
Mixed Integer ◽  
Individual Agent ◽  
The Road ◽  
Agent Simulation ◽  
Network Costs

Our paper deals with the Transportation Network and Land Use (TNLU) problem.  It consists in finding, simultaneously, the best location of urban area activities, as well as of the road network design that may minimize the moving cost in the network, and the network costs. We propose a new mixed integer programming formulation of the problem, and a new heuristic method for the resolution of TNLU. Then, we give a methodology to find locations or relocations of some Dakar region amenities (home, shop, work and leisure places), that may reduce travel time or travel distance. The proposed methodology mixes multi-agent simulation with combinatorial optimization techniques; that is individual agent strategies versus global optimization using Geographical Information System. Numerical results which show the effectiveness of the method,  and simulations based on the scenario of Dakar city are given.

scholarly journals Green Network Costs of 5G and Beyond, Expectations Vs Reality

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 60206-60213 ◽  
Author(s):  
Yousif Al-Dunainawi ◽  
Raad S. Alhumaima ◽  
H. S. Al-Raweshidy
Keyword(s):  
Network Costs
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