Impact of Rural Grid-Connected Photovoltaic Generation Systems on Power Quality

Pinto, Rita; Mariano, S.J.P.S.; Calado, M.R.A.; Souza, J.F. De

doi:10.3390/en9090739

Cited by 33 publications

(32 citation statements)

References 31 publications

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“…In this way NPV(ESS) is positive, and consequently, as defined in Equation (6), NPV(PV + ESS) > NPV(PV). If the investor opts to install a PV-integrated battery system, can obtain more profits than PV system.…”

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confidence: 99%

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The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

2017

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A solar photovoltaic system produces electricity by converting energy from the sun. By the end of 2016, the global installed solar photovoltaic capacity reached 305 GW. Its growth is impressive in the last years; in fact, it was only equal to 41 GW in 2010. However, Europe has installed only 6.9 GW in 2016 (−1.7 GW in comparison to previous year) and this annual power installed is equal to 9% of global one in according to data released by Solar Power Europe. The profitability of PV systems in mature markets depends on the harmonization between demanded energy and produced one residential energy storage when combined with photovoltaic panels is able to increase the share of self-consumption. This work proposes a mathematical model, in which a Discounted Cash Flow analysis is conducted to evaluate the financial feasibility of photovoltaic-integrated lead acid battery systems in Italy. The indicator used is Net Present Value. Furthermore, a break-even point analysis, in terms of an increase of self-consumption, is conducted. The residential sector is investigated and energy storage system investment is incentivized by fiscal deduction and regional subsidies. The analysis provides several case studies, determined by combinations of the following variables: photovoltaic plant size, battery capacity, the increase of the share of self-consumption, and the useful lifetime of energy storage system. The same case studies are proposed also in four alternative scenarios, where is the modified the structure of subsidies. Results confirm that the profitability can be reached in presence of subsidies.

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confidence: 99%

“…In the first case, ESS is characterized by economics in which discounted cash inflows are greater than the relative discounted cash outflows. In this way NPV(ESS) is positive, and consequently, as defined in Equation (6), NPV(PV + ESS) > NPV(PV). If the investor opts to install a PV-integrated battery system, can obtain more profits than PV system.…”

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confidence: 99%

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

2017

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“…Already, low voltage levels in some areas partly exceed the limits of permissible voltage differences according to EN 50160. Voltage dips, swells, transients and voltage harmonic content are the main issues [4,5]. The further construction of new renewable energy plants is therefore thwarted [6].…”

Section: Introductionmentioning

confidence: 99%

Modelling and Optimization in Microgrids

Porsinger¹,

Janík

Leonowicz

et al. 2017

Energies

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Abstract:The expansion of renewable energies is progressing strongly. The influence on the power supply networks by the variability of the infeed must be met with new concepts. In this paper, we investigate the possibilities of integrating microgrids as a cooperating unit in the power supply network to support further expansion of renewable energy sources (RES) power plants. In this paper, a differentiation of microgrids from similar network structures is established, and a classification of proposed groups is made. Then, after the description of the simulation of the components in a microgrid, with practical advice, an example model is shown, which aids the dimensioning of the components within a microgrid to achieve a specified goal.

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“…Photovoltaic (PV) power generation as a clean and rich renewable energy source has attracted the attention of scholars at home and abroad [1][2][3]. At present, the research on PV power generation is becoming more and more mature, mainly in the areas of power prediction [4,5], optimal control [6,7], and energy storage system capacity optimization [8][9][10][11][12] for PV power stations.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Time Length of Photovoltaic Output Power to Capacity Configuration of Energy Storage Systems

Wang

Zheng

2017

Energies

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Time interval and time length are two important indexes when analyzing the active output data of photovoltaic (PV) power stations. When the time interval is constant, the length of time is too small, and the included information is less, resulting in a lack and distortion of information; it the length of time is too large, the included information is redundant and complicated, resulting in unnecessary increases of storage capacity and calculation. Therefore, it is important to determine the appropriate length of data for the analysis of PV output data. In this paper, firstly, the output data of a PV power station is analyzed statistically, and the preliminary conclusions for time length selection are obtained by autocorrelation analysis. Based on the weather characteristics, clustering analysis methods and statistical principles are used to analyze the data and optimal sample capacity estimation, respectively, for different types of photovoltaic output data and determine the required data time length at the time of analyzing the PV power plant output data, the relationship between energy storage capacity demand and data length is investigated, the rationality of the length of the selected time is verified. Meanwhile, the energy storage system capacity configuration based on the optimal data time length is given. The results show that the requirement of data volume of energy storage system capacity configuration can be met when the time length of the PV output data is 23 days.

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Impact of Rural Grid-Connected Photovoltaic Generation Systems on Power Quality

Cited by 33 publications

References 31 publications

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

Modelling and Optimization in Microgrids

Sensitivity Analysis of Time Length of Photovoltaic Output Power to Capacity Configuration of Energy Storage Systems

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