Combination of Three Methods of Photo Voltaic Panels Damage Evaluation

Olšan, T.; Libra, Martin; Poulek, V.; Chalupa, B.; Sedláček, Jan

doi:10.1515/sab-2017-0016

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…It is seen that in all the above PV, the power amount of produced electric energy corresponded to the prediction; in all cases, the actual values were higher by 10-20%. It can be assumed that due to the aging of PV solar modules, the amount of electricity produced would decrease by 10-20% within 20 years of operation, which is common; see, e.g., [35,36]. Table 1 shows the comparison between predicted and actual values of generated electrical energy from the selected photovoltaic arrays.…”

Section: Resultsmentioning

confidence: 99%

New Monitoring System for Photovoltaic Power Plants’ Management

Beránek¹,

Olšan

Libra

et al. 2018

Energies

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An innovative solar monitoring system has been developed. The system aimed at measuring the main parameters and characteristics of solar plants; collecting, diagnosing and processing data. The system communicates with the inverters, electrometers, metrological equipment and additional components of the photovoltaic arrays. The developed and constructed long working system is built on special data collecting technologies. At the generating plants, a special data logger BBbox is installed. The new monitoring system has been used to follow 65 solar plants in the Czech Republic and elsewhere for 175 MWp. As an example, we have selected 13 PV plants in this paper that are at least seven years old. The monitoring system contributes to quality management of plants, and it also provides data for scientific purposes. Production of electricity in the built PV plants reflects the expected values according to internationally used software PVGIS (version 5) during the previous seven years of operation. A comparison of important system parameters clearly shows the new solutions and benefits of the new Solarmon-2.0 monitoring system. Secured communications will increase data protection. A higher frequency of data saving allows higher accuracy of the mathematical models.

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Section: Resultsmentioning

confidence: 99%

New Monitoring System for Photovoltaic Power Plants’ Management

Beránek¹,

Olšan

Libra

et al. 2018

Energies

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“…The methods of detecting PV panel defects have been mentioned in our previous paper [9]. There were studied faults of PV systems in other references, for example early degradation of silicon PV modules [10] and statistics of the faults [11].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Defects of a Photovoltaic Power Plant Using a Drone

et al. 2019

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Drone infrared camera monitoring of photovoltaic (PV) power plants allows us to quickly see a large area and to find the worst defects in PV panels, namely cracked PV cells with broken contacts. Roofs are suitable for the integration of PV power plants into buildings. The power plant at the Czech University of Life Sciences in Prague, which was monitored by this method, does not show any significant defects, and the produced electric energy exceeds the expected values. On the contrary, the PV power plant in Ladná has visible defects, and the data monitoring system Solarmon-2.0 also indicates defects. Our newly developed data monitoring system Solarmon-2.0 has been successfully used in 65 PV power plants in the Czech Republic and in many PV power plants throughout the world. Data are archived and interpreted in our dispatch area at the Czech University of Life Sciences in Prague. The monitoring system can report possible failure(s) if the measured amount of energy differs from the expected value(s). The relation of the measured values of PV power to the PV panel temperature is justified, which is consistent with the physical theory of semiconductors.

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Analysis of Selected Photovoltaic Panels Operating Parameters as a Function of Partial Shading and Intensity of Reflected Radiation

Bilčík

Božíková

Petrović

et al. 2018

Acta Technologica Agriculturae

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Due to expansion of utilisation of photovoltaics in ordinary households, the question arises how this phenomenon affects the electric power of photovoltaic modules. The article deals with the electric power analysis of photovoltaic modules as a function of two very important factors. The first examined factor was partial shading, and the second factor was the intensity of reflected radiation. In order to determine the dependence of module power on the aforementioned parameters, a measurement system under laboratory conditions has been prepared. For identification of the reflected radiation effect on the power of the photovoltaic module, a series of measurements was performed on 7 different surfaces with the same radiation source. It is evident from obtained experimental result that the ratio of reflected irradiation on the solar module power is 1.29%. By simulation of partial shading of photovoltaic module, the decrease of 86.15% in its output power was identified.

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Combination of Three Methods of Photo Voltaic Panels Damage Evaluation

Cited by 3 publications

References 13 publications

New Monitoring System for Photovoltaic Power Plants’ Management

New Monitoring System for Photovoltaic Power Plants’ Management

Monitoring of Defects of a Photovoltaic Power Plant Using a Drone

Analysis of Selected Photovoltaic Panels Operating Parameters as a Function of Partial Shading and Intensity of Reflected Radiation

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