Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents
This paper presents a DC side oriented diagnostic method for photovoltaic fields which operates on string currents previously supplied by an appropriate monitoring system. The relevance of the work relies on the definition of an effective and reliable day-by-day target for the power that every strin...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2017/2834685 |
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| author | Pierluigi Guerriero Luigi Piegari Renato Rizzo Santolo Daliento |
| author_facet | Pierluigi Guerriero Luigi Piegari Renato Rizzo Santolo Daliento |
| author_sort | Pierluigi Guerriero |
| collection | DOAJ |
| description | This paper presents a DC side oriented diagnostic method for photovoltaic fields which operates on string currents previously supplied by an appropriate monitoring system. The relevance of the work relies on the definition of an effective and reliable day-by-day target for the power that every string of the field should have produced. The procedure is carried out by comparing the instantaneous power produced by all solar strings having the same orientation and by attributing, as producible power for all of them, the maximum value. As figure of merit, the difference between the maximum allowed energy production (evaluated as the integral of the power during a defined time interval) and the energy actually produced by the strings is defined. Such a definition accounts for both weather and irradiance conditions, without needing additional sensors. The reliability of the approach was experimentally verified by analyzing the performance of two medium size solar fields that were monitored over a period of four years. Results allowed quantifying energy losses attributable to underperforming solar strings and precisely locating their position in the field. |
| format | Article |
| id | doaj-art-c4277dd3848c47b8a6a34362e58c04b5 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-c4277dd3848c47b8a6a34362e58c04b52025-02-03T06:41:58ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2017-01-01201710.1155/2017/28346852834685Mismatch Based Diagnosis of PV Fields Relying on Monitored String CurrentsPierluigi Guerriero0Luigi Piegari1Renato Rizzo2Santolo Daliento3Department of Electrical Engineering and Information Technology (DIETI), University of Naples Federico II, Via Claudio 21, 80125 Naples, ItalyDepartment of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, ItalyDepartment of Electrical Engineering and Information Technology (DIETI), University of Naples Federico II, Via Claudio 21, 80125 Naples, ItalyDepartment of Electrical Engineering and Information Technology (DIETI), University of Naples Federico II, Via Claudio 21, 80125 Naples, ItalyThis paper presents a DC side oriented diagnostic method for photovoltaic fields which operates on string currents previously supplied by an appropriate monitoring system. The relevance of the work relies on the definition of an effective and reliable day-by-day target for the power that every string of the field should have produced. The procedure is carried out by comparing the instantaneous power produced by all solar strings having the same orientation and by attributing, as producible power for all of them, the maximum value. As figure of merit, the difference between the maximum allowed energy production (evaluated as the integral of the power during a defined time interval) and the energy actually produced by the strings is defined. Such a definition accounts for both weather and irradiance conditions, without needing additional sensors. The reliability of the approach was experimentally verified by analyzing the performance of two medium size solar fields that were monitored over a period of four years. Results allowed quantifying energy losses attributable to underperforming solar strings and precisely locating their position in the field.http://dx.doi.org/10.1155/2017/2834685 |
| spellingShingle | Pierluigi Guerriero Luigi Piegari Renato Rizzo Santolo Daliento Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents International Journal of Photoenergy |
| title | Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents |
| title_full | Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents |
| title_fullStr | Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents |
| title_full_unstemmed | Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents |
| title_short | Mismatch Based Diagnosis of PV Fields Relying on Monitored String Currents |
| title_sort | mismatch based diagnosis of pv fields relying on monitored string currents |
| url | http://dx.doi.org/10.1155/2017/2834685 |
| work_keys_str_mv | AT pierluigiguerriero mismatchbaseddiagnosisofpvfieldsrelyingonmonitoredstringcurrents AT luigipiegari mismatchbaseddiagnosisofpvfieldsrelyingonmonitoredstringcurrents AT renatorizzo mismatchbaseddiagnosisofpvfieldsrelyingonmonitoredstringcurrents AT santolodaliento mismatchbaseddiagnosisofpvfieldsrelyingonmonitoredstringcurrents |