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Articolo RSE 17001685

The IGREENGrid Project - Increasing Hosting Capacity of Distribution Grid

Articolo

IEEE power & energy magazine, vol. 15 N. 3, pp. 30-40, Maggio-Giugno-2017.

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M. Rossi (RSE SpA)

iGREENGrid - IntegratinG Renewables in the EuropEaN electricity Grid

Sommario dei risultati e metodologie del progetto Europeo IGREENGrid, focalizzato sull’identificazione delle soluzioni più promettenti per l’integrazione delle risorse rinnovabili nelle reti di distribuzione Europee.

Distributed Renewable Energy Sources (DRESs) are increasing rapidly in distribution grids, and their integration into the electricity system is one of the most relevant problems facing these networks. The objective the project, IntegratinG Renewables in the EuropEaN electricity Grid (IGREENGrid), was to analyse and select the most promising research and development (R&D) solutions to this problem.The standard long-term solution to increase the capacity of electricity networks to connect additional generation is grid reinforcement, but this kind of approach is too slow and costly to respond effectively to DRESs.

Several alternative solutions are currently under development, including controlling DRES active and reactive power generation, managing flexible demand, and smart charging of electric vehicles. These alternatives can be rapidly implemented in a cost effective way as temporary solutions to solve local constraints until the tendencies of generation and consumption growth in the area become clearer. Regarding continuous local increases of DRES, the reinforcement of the network will take place considering the real necessities appeared, but if the zone remains stable, smart grid alternatives (such as DRES control and energy storage), proposed as temporary, can be settled a long-term solution.

After classifying the solutions by the problem they solve and determining which are the most promising for DRES integration, many elements should be taken into account: problem relevance, the applicability of each solution to the real grids, cost, complexity, prerequisites (including skills and tools for planning and asset management), environmental impact, and customer acceptance.

A list of parameters and key performance indicators to measure the main aspects involved in the selection process was studied, but finally there is one indicator standing out from all the others: increasing hosting capacity.

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