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Statistics to detect low-intensity anomalies in PV systems

Vergura, Silvano / Carpentieri, Mario

The aim of this paper is the monitoring of the energy performance of Photovoltaic (PV) plants in order to detect the presence of low-intensity anomalies, before they become failures or faults. The approach is based on several statistical tools, which are applied iteratively as the data are acquired. At every loop, new data are added to the previous ones, and a proposed procedure is applied to the new dataset, therefore the analysis is carried out on cumulative data. In this way, it is possible to track some specific parameters and to monitor that identical arrays in the same operating conditions produce the same energy. The procedure is based on parametric (ANOVA) and non-parametric tests, and results effective in locating anomalies. Three cumulative case studies, based on a real operating PV plant, are analyzed.

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Statistics to detect low-intensity anomalies in PV systems

Vergura, Silvano / Carpentieri, Mario

The aim of this paper is the monitoring of the energy performance of Photovoltaic (PV) plants in order to detect the presence of low-intensity anomalies, before they become failures or faults. The approach is based on several statistical tools, which are applied iteratively as the data are acquired. At every loop, new data are added to the previous ones, and a proposed procedure is applied to the new dataset, therefore the analysis is carried out on cumulative data. In this way, it is possible to track some specific parameters and to monitor that identical arrays in the same operating conditions produce the same energy. The procedure is based on parametric (ANOVA) and non-parametric tests, and results effective in locating anomalies. Three cumulative case studies, based on a real operating PV plant, are analyzed.

Statistics to detect low-intensity anomalies in PV systems

Vergura, Silvano / Carpentieri, Mario

The aim of this paper is the monitoring of the energy performance of Photovoltaic (PV) plants in order to detect the presence of low-intensity anomalies, before they become failures or faults. The approach is based on several statistical tools, which are applied iteratively as the data are acquired. At every loop, new data are added to the previous ones, and a proposed procedure is applied to the new dataset, therefore the analysis is carried out on cumulative data. In this way, it is possible to track some specific parameters and to monitor that identical arrays in the same operating conditions produce the same energy. The procedure is based on parametric (ANOVA) and non-parametric tests, and results effective in locating anomalies. Three cumulative case studies, based on a real operating PV plant, are analyzed.

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Titel:

Statistics to detect low-intensity anomalies in PV systems

Beteiligte:

Vergura, Silvano (Autor:in) / Carpentieri, Mario (Autor:in) / Vergura, Silvano / Carpentieri, Mario

Erscheinungsdatum:

01.01.2018

DOI:

https://doi.org/10.3390/en11010030

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

ANOVA , Kurtosi , Energy (miscellaneous) , Homoscedasticity , Skewne , Computer Science (all) , Unimodality , Energy Engineering and Power Technology , Sustainability and the Environment , Non-parametric test , Renewable Energy

Klassifikation:

DDC: 690

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