102,216 research outputs found
Experimental methods to evaluate the impact of a photovoltaic system at the point of common coupling in low voltage networks
No full textConclusions and key findings of optimal operation and planning of distributed energy resources in the context of local integrated energy systems
No full textOverview of distributed energy resources in the context of local integrated energy systems
No full textChallenges and Opportunities of the Energy Transition and the Added Value of Energy Systems Integration
No full textThis book addresses the topic of integrated energy systems and networks by also providing a comprehensive overview of the emerging technologies and systems that characterize this new energy paradigm. It discusses the energy transition toward a low- or even carbon-neutral energy system, which brings many challenges and opportunities, and the significant progress that is necessary for today's energy systems to change toward satisfying the needs of the society and the economy by becoming as environmentally sustainable as possible. Achieving this goal requires fully integrated energy systems able to supply low-carbon energy for all sectors from different energy sources, while integrating multiple energy carriers and exploiting the synergies coming from this interplay. An integrated energy system can be seen as a multi-energy system relaying on multiple energy carriers and characterized by a high level of integration between all related networks, supported by energy storage of different types and power conversion processes. The uniqueness of this book is in its holistic approach toward the concept of integrated energy systems, which will characterize the future energy system, by addressing the topic in a comprehensive way while also focusing the attention on the main emerging technologies playing a major role in integrated energy systems and networks
Multiobjective operation optimization of DER for short-and long-run sustainability of local integrated energy systems
No full textTransition Potential of Local Energy Communities
No full textIn this chapter, the authors address the role of local energy communities (LEC) in the transition toward a low- or even carbon-neutral energy system. LECs are contextualized in the broader framework of the energy revolution started after Paris Agreements in December 2015 that led to the definition of 17 “sustainable development goals (SDGs)” by United Nations (UN) and to the establishment of the Clean Energy Package by European Commission in 2019. At global level, Energy Communities play a pivotal role to achieve United Nations SDG 7 (“Ensure access to affordable, reliable, sustainable and modern energy for all”) and 11 (“Make cities and human settlements inclusive, safe, resilient and sustainable”), the former more focused on rural communities and the latter more focused on urban context. This is even more true if thinking that reducing energy poverty, by bringing clean and affordable energy in rural areas through hybrid energy systems, is a fundamental strategy to develop rural contexts while also reducing migration toward urban areas and megacities. At European level, Energy Communities have a fundamental role in a consumer-centered energy system in which consumers and prosumers are fully engaged and play an active role both in single and in aggregated forms also with new forms of citizen participation (citizen energy communities). Indeed, LECs provide the right framework for increasing awareness, engagement, and empowerment of citizens in the energy sector. Moreover, LECs can be considered as multi-energy environments in which different energy systems and vectors can be integrated in order to optimally exploit the synergies among energy and non-energy networks (e.g. water distribution network and desalination systems). This is even more true when dealing with “geographical” or “energy” islands in which local energy communities are well identified by geographical or network boundaries. In the second part of the chapter, the authors will provide a vision on how the technologies and systems presented in this book, implemented in local multi-energy communities, can support the achievement of goal of a transition toward carbon-neutral energy systems. Finally, the authors present a vision for the future role of LECs in the energy transition, starting from the experience of European Green Deal
An Innovative Conversion Device to the Grid Interface of Combined RES-Based Generators and Electric Storage Systems
No full textThis paper is focused on the development of an innovative device, which is based on a bidirectional converter, for the interface to the supply utility grid of combined renewable-energy-source-based generators and electric storage systems. The device can be controlled so as to ease the interface between the low-voltage grid and photovoltaic or wind generators combined with lithium-ion LiFePO4 batteries, taking into account the requirements of the reference technical standards for users connection and offering different ancillary services. The operational functioning of the device, the architecture, and its electronic components, as well as laboratory and field test activities and results are described. The conversion device has been developed, and the main results that have been achieved are detailed. © 1982-2012 IEEE
Optimal Design of der for Economic/Environmental Sustainability of Local Energy Communities
No full textIn this paper, a multi-objective optimization model is proposed to obtain the optimized configuration of interconnected distributed energy resource (DER) systems in a local energy community (LEC), while considering economic and environmental aspects. The objective is the optimal selection and sizing of DER with corresponding operation strategies, and the optimal configuration of the heating pipeline network, which allows the heat exchange among the DER systems. The economic objective is to minimize the total annual cost, whereas the environmental objective is to minimize the total annual CO2emissions. The Pareto frontier is found through the weighted-sum method, by using branch-and-cut. Numerical results show that the design method allows identifying different configurations of the interconnected DER systems and heating pipeline network on the Pareto frontier, thereby providing trade-off options to planners for economic/environmental sustainability of the LEC. Moreover, the total annual cost and emissions of the LEC with the optimized configurations are significantly reduced as compared with the conventional energy supply scenario. İ 2018 IEEE
Electric Vehicles integration in demand response programs
No full textAn important support in Demand Response (DR) programs can be provided by the Electric Vehicles (EVs). EVs may behave as a load to the grid, a supplier of electricity to the grid or an energy storage device. Thanks to the smart grid enabling technologies, Utilities can manage EVs charging time and rates, gather EVs-detailed meter data and, therefore, implement DR programs. In the present paper an overview on DR definitions and a classification of the types of customers involved and implementable programs is reported. Then a special focus on EVs integration in DR programs is given, stressing the valuable services that EVs in smart grid asset can provide. © 2014 IEEE
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