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Sensors 2015, 15(8), 18459-18479; doi:10.3390/s150818459

A Decentralized Wireless Solution to Monitor and Diagnose PV Solar Module Performance Based on Symmetrized-Shifted Gompertz Functions

1
Department of Electrical Engineering, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
2
Institute ITACA, Universitat Politècnica de València, 46071 Valencia, Spain
3
Renewable Energy Institute DEEEAC, Universidad de Castilla La-Mancha, 02071 Albacete, Spain
4
Department of Applied Mathematics and Statistics, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 10 April 2015 / Revised: 17 July 2015 / Accepted: 24 July 2015 / Published: 29 July 2015
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [2381 KB, uploaded 29 July 2015]   |  

Abstract

This paper proposes and assesses an integrated solution to monitor and diagnose photovoltaic (PV) solar modules based on a decentralized wireless sensor acquisition system. Both DC electrical variables and environmental data are collected at PV module level using low-cost and high-energy efficiency node sensors. Data is real-time processed locally and compared with expected PV module performances obtained by a PV module model based on symmetrized-shifted Gompertz functions (as previously developed and assessed by the authors). Sensor nodes send data to a centralized sink-computing module using a multi-hop wireless sensor network architecture. Such integration thus provides extensive analysis of PV installations, and avoids off-line tests or post-processing processes. In comparison with previous approaches, this solution is enhanced with a low-cost system and non-critical performance constraints, and it is suitable for extensive deployment in PV power plants. Moreover, it is easily implemented in existing PV installations, since no additional wiring is required. The system has been implemented and assessed in a Spanish PV power plant connected to the grid. Results and estimations of PV module performances are also included in the paper. View Full-Text
Keywords: monitoring; photovoltaic power systems; solar power generation; wireless sensor network monitoring; photovoltaic power systems; solar power generation; wireless sensor network
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Molina-García, A.; Campelo, J.C.; Blanc, S.; Serrano, J.J.; García-Sánchez, T.; Bueso, M.C. A Decentralized Wireless Solution to Monitor and Diagnose PV Solar Module Performance Based on Symmetrized-Shifted Gompertz Functions. Sensors 2015, 15, 18459-18479.

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