An Optimization Method for Designing Large PV Plants

Kerekes, Tamás; Koutroulis, Eftichios; Séra, Dezső; Teodorescu, Remus; Katsanevakis, Markos

doi:10.1109/jphotov.2012.2230684

Cited by 113 publications

(41 citation statements)

References 26 publications

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“…Consequently, the main drawback of these methods is that they cannot differentiate between a local maximum point (LMP) and the GMP, and the attained point may be a LMP, leading to power losses. Note that in general, for a utility scale PV system, although the site will be carefully selected to ensure good solar irradiance and to avoid partial shading (PS) caused by other buildings or surrounding obstacles, the PS caused by clouds and the mutual shading occurred between adjacent PV blocks are inevitable in practice [7], [8]. For residential PV installations, PS caused by buildings, trees, clouds, etc.…”

Section: Introductionmentioning

confidence: 99%

A Modified Firefly Algorithm for Photovoltaic Maximum Power Point Tracking Control Under Partial Shading

Teshome

Lee

Lin³

et al. 2017

IEEE J. Emerg. Sel. Topics Power Electron.

170

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Photovoltaic (PV) modules subjected to partial shading conditions (PSC) can drastically decrease their power output. Hence, there have been various maximum power point tracking (MPPT) control algorithms developed to reduce or counteract the shading effects. Recently, a new meta-heuristic algorithm known as firefly algorithm (FA) was developed, which, under PSC, has been shown to successfully track the GMP. Nevertheless, the FA still has some inherent problems, which may hinder the performance of the MPPT. This paper modifies the existing FA to counteract these problems. As will be demonstrated in the paper, the proposed modified FA (MFA) method can reduce the number of computation operations and the time for converging to the GMP that the existing FA requires.Experimental results show that the proposed method can track the global point under various PSC, has a faster convergence time, compared to the FA, and can effectively suppress the power and voltage fluctuations. Index TermsMaximum power point tracking (MPPT), photovoltaic (PV) array, partial shading, global optimization, firefly algorithm

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Section: Introductionmentioning

confidence: 99%

A Modified Firefly Algorithm for Photovoltaic Maximum Power Point Tracking Control Under Partial Shading

Teshome

Lee

Lin³

et al. 2017

IEEE J. Emerg. Sel. Topics Power Electron.

170

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“…Largest DC onshore and offshore renewable grids are in range of several hundred MWs [156], [157]. [158].…”

Section: E Electric Vehicle Fast Charging Stationsmentioning

confidence: 99%

DC Microgrids—Part II: A Review of Power Architectures, Applications, and Standardization Issues

Dragičević

Liu

Vasquez

et al. 2016

IEEE Trans. Power Electron.

1,051

402

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DC microgrids (MGs) have been gaining a continually increasing interest over the past couple of years both in academia and industry. The advantages of DC distribution when compared to its AC counterpart are well known. The most important ones include higher reliability and efficiency, simpler control and natural interface with renewable energy sources (RESs), electronic loads and energy storage systems (ESSs). With rapid emergence of these components in modern power systems, the importance of DC in today's society is gradually being brought to a whole new level. A broad class of traditional DC distribution applications such as traction, telecom, vehicular and distributed power systems can be classified under DC MG framework and ongoing development and expansion of the field is largely influenced by concepts used over there. This paper aims firstly to shed light on the practical design aspects of DC MG technology concerning typical power hardware topologies and their suitability for different emerging smart grid applications. Then, an overview of the state of the art in DC MG protection and grounding is provided. Owing to the fact that there is no zero current crossing, an arc that appears upon breaking DC current cannot be extinguished naturally, making the protection of DC MGs a challenging problem. In relation with this, a comprehensive overview of protection schemes which discusses both design of practical protective devices and their integration into overall protection systems is provided. Closely coupled with protection, conflicting grounding objectives, e.g. minimization of stray current and common mode voltage are explained and several practical solutions are presented. Also, standardization efforts for DC systems are addressed. Finally, concluding remarks and important future research directions are pointed out.Index Terms -DC microgrid (MG), power architectures, protection and grounding, standardization. 0885-8993 (c)

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“…Over this study, the algorithm was used to select the optimal combination of the system components (PV module and inverter) so that the PR was maximized. In [10], a genetic algorithm was developed for the calculation of the optimal configuration of large PV plants aiming at minimizing the levelized cost of energy (LCOE). The design optimization was carried out considering the number of components and their arrangement within the field as well as the lifetime cost and energy production.…”

Section: Of 17mentioning

confidence: 99%

Technical and Economic Optimal Solutions for Utility-Scale Solar Photovoltaic Parks

Silva

Castro

Batalha³

2020

Electronics

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Solar energy has shown to be a successful renewable source, wherefore large investments are planned in the upcoming decades. This work aims at developing technical and economical solutions to optimize a utility-scale grid connected solar photovoltaic park with an installed capacity of 24 MWp. Several successive simulations were automatically performed with the PVSyst software, so that each influencing parameter is individually analyzed. Moreover, a comprehensive study touching relevant aspects, such as central versus string inverters, landscape versus portrait dispositions, the optimal tilt angle (for fixed tilt systems), backtracking strategy (for single axis tracking systems), shading limit angle, and pitch is performed with the objective of finding the configuration leading to the higher grid injected energy output. The levelized cost of energy (LCOE) was obtained for 12 different cases in which, for both fixed tilt and single-axis tracking (SAT), central and string inverters and portrait/landscape disposition were considered. The lowest LCOE achieved was 32.23 €/MWh, which is a clear indication of the competitiveness of the solar Photovoltaic (PV) technology. The most economic viable solution is characterized by the employment of an SAT system with the backtracking strategy, together with string inverters and module portrait disposition.

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An Optimization Method for Designing Large PV Plants

Cited by 113 publications

References 26 publications

A Modified Firefly Algorithm for Photovoltaic Maximum Power Point Tracking Control Under Partial Shading

A Modified Firefly Algorithm for Photovoltaic Maximum Power Point Tracking Control Under Partial Shading

DC Microgrids—Part II: A Review of Power Architectures, Applications, and Standardization Issues

Technical and Economic Optimal Solutions for Utility-Scale Solar Photovoltaic Parks

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