Optimal sizing of grid-connected hybrid renewable energy systems without storage: a generalized optimization model

Çapraz, Ozan; Güngör, Aşkıner; Özcan, Mutlu; Sağbaş, Aysun

doi:10.1080/15567036.2020.1803454

Cited by 11 publications

(8 citation statements)

References 62 publications

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“…To obtain the total power from the PV, it is desired to formulate a function that converts the energy from the sun into electricity. Modelling of the PV system helps in assessing the general PV system performance [10]. Solar energy can be generated by different methods:Solar thermal energy, Photovoltaic cells, and concentrated solar power systems (uses mirrors or lenses).…”

Section: Modeling Of the Photovoltaic (Pv) Systemmentioning

confidence: 99%

“…For instance, Fara et al [6] conducted a reliability analysis of PV systems for specific applications where the focus was to get a much more stable and sustainable operation of a PV system, in [7], a reliability analysis was carried out and it was concluded that to achieve a higher level of reliability, a small wind turbine with small power electronics must be used, again, Essan [8] built a methodology to assess the reliability for islanded hybrid PV-diesel-battery system in society at Nigeria, Sayed [9] also conducted a study which assessed and analyzed PV grid-linked reliability, its availability and the maintainability. Though the reliability problem has been addressed in various forms by different researchers it remains a complicated problem, that is, given energy demand, it is really difficult to estimate the reliability level of the RESS so that it could meet such demand due to the uncertainty and some technical failures in the RESS [10]. The set-up in Ghana, for instance, is mostly based on experience and intuition, which could sometimes result in either overproduction or underproduction of power [11].…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic Method for Estimating the Level of Reliability of Solar Photovoltaic Systems for Households in Ghana

Abubakar

Musah

Owusu

et al. 2021

AJPAS

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Renewable Energy Resources have been identified among the most promising sources of harnessing power for industrial and household consumption but their power generations highly uctuate so building renewable power systems without critical reliability analysis might result in frequent blackouts in the power system. Therefore, in this paper, a robust, effective and ecient design approach is proposed to handle the reliability issues. The study involves a Mathematical modelling strategy of the PV system to estimate the total PV power produced and the Bottom-Up approach for predicting the household load demand. The reliability is defined in terms of Loss of Load Probability. The design methodology was validated with a University Household. The data used for the analysis consists of daily average global solar irradiance and load profiles. The results revealed that throughout the year, November-February is where the system seems to be more reliable. Also, the results indicated that without buck-up systems, the system would experience an average annual power loss of 17.8753% and thus, it is recommended that either solar batteries or the grid are used as backup system to achieve a complete level of reliability.

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Section: Modeling Of the Photovoltaic (Pv) Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probabilistic Method for Estimating the Level of Reliability of Solar Photovoltaic Systems for Households in Ghana

Abubakar

Musah

Owusu

et al. 2021

AJPAS

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“…The best size for a stand-alone microgrid that uses only renewable energy and energy storage systems is presented in [76,77]. In addition, grid-connected hybrid-only renewable energy sources with energy storage optimal sizing optimizations are investigated in [78][79][80].…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis and Optimization of Hybrid Renewable Energy System with Energy Storage under Two Operational Modes

et al. 2023

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Access to cheap, clean energy has a significant impact on a country’s ability to develop sustainably. Fossil fuels have a major impact on global warming and are currently becoming less and less profitable when used to generate power. In order to replace the diesel generators that are connected to the university of Debre Markos’ electrical distribution network with hybrid renewable energy sources, this study presents optimization and techno-economic feasibility analyses of proposed hybrid renewable systems and their overall cost impact in stand-alone and grid-connected modes of operation. Metaheuristic optimization techniques such as enhanced whale optimization algorithm (EWOA), whale optimization algorithm (WOA), and African vultures’ optimization algorithm (AVOA) are used for the optimal sizing of the hybrid renewable energy sources according to financial and reliability evaluation parameters. After developing a MATLAB program to size hybrid systems, the total current cost (TCC) was calculated using the aforementioned metaheuristic optimization techniques (i.e., EWOA, WOA, and AVOA). In the grid-connected mode of operation, the TCC was 4.507 × 106 EUR, 4.515 × 106 EUR, and 4.538 × 106 EUR, respectively, whereas in stand-alone mode, the TCC was 4.817 × 106 EUR, 4.868 × 106 EUR, and 4.885 × 106 EUR, respectively. In the grid-connected mode of operation, EWOA outcomes lowered the TCC by 0.18% using WOA and 0.69% using AVOA, and by 1.05% using WOA and 1.39% using AVOA in stand-alone operational mode. In addition, when compared with different financial evaluation parameters such as net present cost (NPC) (EUR), cost of energy (COE) (EUR/kWh), and levelized cost of energy (LCOE) (EUR/kWh), and reliability parameters such as expected energy not supplied (EENS), loss of power supply probability (LPSP), reliability index (IR), loss of load probability (LOLP), and loss of load expectation (LOLE), EWOA efficiently reduced the overall current cost while fulfilling the constraints imposed by the objective function. According to the result comparison, EWOA outperformed the competition in terms of total current costs with reliability improvements.

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“…It is worthwhile to note that the design and development of both solar home systems (SHS) and off-grid solar plants with good efficiency requires rigorous sizing and optimization based on actual and forecasted energy consumption [22][23][24][25][26][27][28]. Various studies have been carried out all over the world on optimizing PV systems.…”

Section: Introductionmentioning

confidence: 99%

Design and Characterization of PV Minigrid Plants for Modern Farming and Rural Electrification in Rwanda

Morris,

Dalson,

Al-Mas

2023

International Journal of Photoenergy

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Solar energy is among the clean, ecofriendly, and reliable energies. Standalone PV plants have great potential to fulfill specific load demands in remote villages in Rwanda. However, owing to the scarcity of information on solar energy potentials in some areas, lack of accurate load demands, and overlooking energy consumption by farming activities, PV plants can be hardly optimally sized, developed, or utilized. This study proposes and characterizes the PV plant model based on precisely quantified load demands including the energy needed for e-farming. The technoeconomic performance of these PV plants was analyzed using PVSyst software. The results confirm availability of solar resources enough to steadily satisfy the loads in the communities. Nevertheless, several factors were seen to induce energy losses for the developed PV systems, among which the heating owing to the rise of temperature being the major factor of energy loss. In fact, the solar radiation intensity exceeds 1800 kW/m2/year, and the heating occurring at the surface of the panels causes energy losses of up to 9.46%. Also, the findings suggested that the investors will gain the financial benefits for 10 out of 25 years while the energy’s price would drop from 0.252 EUR/kWh to 0.180 EUR/kWh. These findings are significant as they provide information that planners and investors could use to make informed decisions. Future studies may need to use such results to quantify the contribution of available subsidies and incentive reduction on cost of solar energy and adoption of PV plants.

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Optimal sizing of grid-connected hybrid renewable energy systems without storage: a generalized optimization model

Cited by 11 publications

References 62 publications

Probabilistic Method for Estimating the Level of Reliability of Solar Photovoltaic Systems for Households in Ghana

Probabilistic Method for Estimating the Level of Reliability of Solar Photovoltaic Systems for Households in Ghana

Techno-Economic Analysis and Optimization of Hybrid Renewable Energy System with Energy Storage under Two Operational Modes

Design and Characterization of PV Minigrid Plants for Modern Farming and Rural Electrification in Rwanda

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