Improvement of Self-Sufficiency for an Innovative Nearly Zero Energy Building by Photovoltaic Generators

Leo, Paolo Di; Spertino, Filippo; Fichera, Stefania; Malgaroli, Gabriele; Ratclif, Alessandro

doi:10.1109/ptc.2019.8810434

Cited by 14 publications

(8 citation statements)

References 21 publications

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“…Very often, however, in the context of ensuring self-sufficiency and self-consumption, solutions for one (several) technical facility are considered and most often they concern the use of photovoltaic installations cooperating with electricity storage, both in the on-grid system and those not connected to the power grid (off-grid). Many such solutions are described in the literature [27,31,33,[74][75][76][77][78][79]. Most of them are at the conceptual stage or at the stage of mathematical modeling.…”

Section: Self-sufficient Systems Based On Pv and Energy Storagementioning

confidence: 99%

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Trends in Locally Balanced Energy Systems without the Use of Fossil Fuels: A Review

2023

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In recent years, the idea of the operation of energy systems (power systems, heating systems) has changed significantly. This paper is an overview of locally balanced energy systems without the use of fossil fuels. The paper justifies the concept of local energy balancing in a new energy system that does not use fossil fuels (coal, natural gas, and crude oil), based on European Union guidelines and formal documents as well as the literature on the subject. In this context, the issue of local energy self-sufficiency, utilizing renewable energy sources, as well as the concept of local smart grids based on innovative market mechanisms are raised. Attention is also paid to technical issues with regard to locally balanced energy systems, in particular photovoltaic sources and energy storage. Challenges related to the use of electrical protection in networks with many sources of energy are described. In such networks, the power flow is not in one direction only. Moreover, the selection of protections is problematic due to the distribution of short-circuit currents. Additionally, earth fault currents in such networks may be distorted, and this negatively affects the operation of residual current devices. The basic nomenclature describing locally balanced systems has been sorted out as well. Finally, possible future research paths in the field of creating locally balanced systems without the use of fossil fuels are presented.

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Section: Self-sufficient Systems Based On Pv and Energy Storagementioning

confidence: 99%

“…An improvement in the self-sufficiency of a nearly zero-energy building (nZEB) was proposed by the authors of [75] using the example of an academic building. The main source of energy is a photovoltaic installation cooperating with energy storage facilities.…”

Section: Self-sufficient Systems Based On Pv and Energy Storagementioning

confidence: 99%

Trends in Locally Balanced Energy Systems without the Use of Fossil Fuels: A Review

2023

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“…In [17] is presented a Photovoltaic (PV) generator which is connected with storage units and supplies the electrical loads and the thermal demand in order to turn into electrical by using heat pumps. The system purpose is to maximize the self-sufficiency and to minimize the use of the grid.…”

Section: Related Workmentioning

confidence: 99%

Energy Efficiency in Smart Buildings: IoT Approaches

2020

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The Internet of Energy (IoE) impacts on smart cities' power sector. IoE is an implementation of the Internet of Things technology (IoT) into distributed energy systems and aims to achieve energy efficiency, to avoid energy wasting, and improve environmental conditions. IoE technology includes, among others, utilizing smart sensors and renewable energy integration. Therefore, the IoE is becoming a legal science tool to serve the purpose of a smart city. In this paper, we refer to the reasons that led the European Union to compile Regulations for facilitating transformation of existing cities, starting from existing buildings, into smart buildings. We propose a smart building template that manages the performance of all technical systems through IoT technology with the view of achieving energy efficiency. In addition, in order to improve the certification of existing buildings, as for energy performance, we propose an automated remote, control method supported by cloud interface. This method minimizes time consuming procedures and stores, on a cloud platform the energy performance of each building, for the purpose of drawing conclusion and applying measures. INDEX TERMS Energy efficiency, energy performance of existing buildings, Internet of Things, smart building template, smart energy management.

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“…Local self-sufficiency encourages the consumption in neighbouring areas of PV generated in a small area of a city. This can prevent an excessive rise in voltage in local distribution systems, prevent the capacity of transmission systems from being exceeded, and efficiently reduce CO 2 emissions in the city [3][4][5][6][7][8]. The idea of self-sufficiency has been welldiscussed at the building scale, where the emphasis has been on reducing CO 2 emissions and electricity costs rather than stabilizing power grids [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…This can prevent an excessive rise in voltage in local distribution systems, prevent the capacity of transmission systems from being exceeded, and efficiently reduce CO 2 emissions in the city [3][4][5][6][7][8]. The idea of self-sufficiency has been welldiscussed at the building scale, where the emphasis has been on reducing CO 2 emissions and electricity costs rather than stabilizing power grids [3,4]. Several case studies have been conducted on local self-sufficiency in cities.…”

Section: Introductionmentioning

confidence: 99%

Spatial demand forecasting based on smart meter data for improving local energy self‐sufficiency in smart cities

et al. 2021

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The use of distributed energy resources (DERs) in a city contributes to the net zero CO2 of a city. However, the spatially uneven distribution of power demand and surplus electricity causes congestion in the grid system, making wide‐area operation difficult. The concept of local energy self‐sufficiency via energy management, in which batteries or electric vehicles are charged using power generated by DERs and discharged to neighbouring consumers, is expected to be a way to avoid grid conjunction while maximizing the use of DERs. For efficient local energy self‐sufficiency, it is necessary to identify where and when future power surpluses and shortages will occur within a city and optimize battery operation according to demand. Forecasts that focus only on representative points of a city may be less reproducible in diversity in the power demand transition for individual consumers in local parts of cities. Electricity smart meters that monitor power demand every 30 min from each consumer are expected to help predict the spatiotemporal distribution of power demand to achieve efficient local energy self‐sufficiency. The significance of reflecting regional characteristics in forecasting spatiotemporal distribution of power demand is demonstrated using actual data obtained by smart meters installed in Japanese cities. The results suggest that the forecast approach, which considers the daily periodicity of power demand and weather conditions, obtains high prediction accuracy in predicting power demand in meshed local areas in the city and derives results precisely reproducing the spatiotemporal behaviours of power demand.

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Improvement of Self-Sufficiency for an Innovative Nearly Zero Energy Building by Photovoltaic Generators

Cited by 14 publications

References 21 publications

Trends in Locally Balanced Energy Systems without the Use of Fossil Fuels: A Review

Trends in Locally Balanced Energy Systems without the Use of Fossil Fuels: A Review

Energy Efficiency in Smart Buildings: IoT Approaches

Spatial demand forecasting based on smart meter data for improving local energy self‐sufficiency in smart cities

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