Project

SOLARGRID - Sistemi sOlari termodinamici e fotovoLtaici con Accumulo peR co-GeneRazIone e flessibilità Di rete

Goal: The main objectives of the project are: identification of technological improvements for the solar power generation systems under consideration; identification of the most efficient plant solutions which also include conventional generation systems, storage units as well as smart network management models, in the presence of poly-generation and cogeneration systems; development of advanced strategies for efficient, intelligent and flexible management of the source-usage process; economic and environmental sustainability assessments, based on Life Cycle Costing (LCC) and Life Cycle Assessment (LCA), of the various proposed technologies, for identifying the most promising technology solutions in an eco-efficiency perspective.

Il progetto SOLARGRID (Sistemi sOlari termodinamici e fotovoLtaici con Accumulo peR co-GeneRazIone e flessibilità Di rete) mira all’innovazione e all’upgrade dei componenti e dei sistemi connessi alle tecnologie Concentrating Solar Power (CSP) e Concentrating PhotoVoltaic (CPV), con l’obiettivo generale di migliorarne le prestazioni energetiche, la competitività economica e nell’ottica dell’integrazione all’interno di reti avanzate per la gestione dell’energia.

Date: 1 March 2020 - 31 August 2022

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Project log

Valeria Palladino
added an update
Abstract. The optimisation of the support structure of heliostats in concentrating solar power
plants is a fundamental task aimed at attempting to reduce the high levelised cost of energy
(LCOE) of current configurations. In this work, an integrated multi-objective optimisation
framework is presented, which relies on the combination of a lean and fast structural model
with a genetic algorithm to simultaneously minimise both the overall mass of the support
structure and the mean angle of rotation of the mirror surface, which directly affects the optical
efficiency of the component. A particular feature of the proposed framework is that it
represents an integrated solution, i.e., it allows to simultaneously optimise the main
components of the heliostat support structure, i.e., the pedestal, the truss and the back support
structure, assuming they are off-the-shelf components easily available on the market. The
optimisation problem is set up selecting as design variables (i) the number of elements in the
back support structure and (ii) the relevant characteristics of all the components considered,
i.e., section shape and dimensions, according to the components commercial datasheets. At
each iteration of the optimisation process, the structural model is fed with the current design
variables values and, according to some computed aerodynamic loads, it allows evaluating the
displacement and rotation of the points of interest within the mirror surface. An aerodynamic
model present in the literature based on experimental wind tunnel tests is used to estimate the
wind forces acting on the heliostat as a function both of the mirror inclination angle with
respect to the ground and of the wind direction with respect to the mirror orientation. In this
work, the proposed methodology is demonstrated on a realistic case study and the results
commented in detail, highlighting possible future developments and the limitations of the
framework.
 
Valeria Palladino
added a research item
The integration of renewable energy sources into the energy system requires both new investment in network infrastructures, and the introduction of new models of energy management. In this framework, new structures of collaborations were born: the aggregator is one of them. It involves grouping different players of the power system, acting, however, as a single entity both when it participates in the electricity markets and sells services to the operator. In this work, a new methodology to determine the optimal revenue of a Unità Virtuali Abilitate Miste (UVAM), which is an Italian virtual energy unit managed by an aggregator, is proposed. The methodology is ar-ticulated in several steps, the core of which is represented by the two models: (1) a cost–benefit analysis in order to identify the main costs/benefits that impact on the UVAM’ revenues; and (2) a decision-making model based on the sensitive analysis to capture the optimal interaction between users and aggregator. The results show how, on varying the parameter costs depending on the aggregator-users’ strategy, it is possible to obtain different optimal “working-points”. Finally, the analysis identifies two main cost factors that impact on the optimal revenue: the Energy Man-agement Platform and the Communication costs, confirming the importance of these parameters in the general economy of UVAM
Valeria Palladino
added an update
Abstract: The integration of renewable energy sources into the energy system requires both new
investment in network infrastructures, and the introduction of new models of energy management.
In this framework, new structures of collaborations were born: the aggregator is one of them. It
involves grouping different players of the power system, acting, however, as a single entity both
when it participates in the electricity markets and sells services to the operator. In this work, a
new methodology to determine the optimal revenue of a Unità Virtuali Abilitate Miste (UVAM),
which is an Italian virtual energy unit managed by an aggregator, is proposed. The methodology is
articulated in several steps, the core of which is represented by the two models: (1) a cost–benefit
analysis in order to identify the main costs/benefits that impact on the UVAM’ revenues; and (2) a
decision-making model based on the sensitive analysis to capture the optimal interaction between
users and aggregator. The results show how, on varying the parameter costs depending on the
aggregator-users’ strategy, it is possible to obtain different optimal “working-points”. Finally, the
analysis identifies two main cost factors that impact on the optimal revenue: the Energy Management
Platform and the Communication costs, confirming the importance of these parameters in the general economy of UVAM.
 
Valeria Palladino
added a project goal
The main objectives of the project are: identification of technological improvements for the solar power generation systems under consideration; identification of the most efficient plant solutions which also include conventional generation systems, storage units as well as smart network management models, in the presence of poly-generation and cogeneration systems; development of advanced strategies for efficient, intelligent and flexible management of the source-usage process; economic and environmental sustainability assessments, based on Life Cycle Costing (LCC) and Life Cycle Assessment (LCA), of the various proposed technologies, for identifying the most promising technology solutions in an eco-efficiency perspective.
Il progetto SOLARGRID (Sistemi sOlari termodinamici e fotovoLtaici con Accumulo peR co-GeneRazIone e flessibilità Di rete) mira all’innovazione e all’upgrade dei componenti e dei sistemi connessi alle tecnologie Concentrating Solar Power (CSP) e Concentrating PhotoVoltaic (CPV), con l’obiettivo generale di migliorarne le prestazioni energetiche, la competitività economica e nell’ottica dell’integrazione all’interno di reti avanzate per la gestione dell’energia.