Abstract
As photovoltaics technologies have emerged as one of the most promising renewable energy resources in urban environments, monitoring and maintaining of such systems have gained significance. In order to support reliable system operation during the projected in-field operation lifetime, effective strategies for identifying potential problems in photovoltaic systems operation are needed. In this paper, novel methods for the identification of degrading effects in the operation of neighboring photovoltaic systems are presented. The proposed methods are applicable for identifying panel aging properties, soiling effects, and the operation of photovoltaic systems under different shading scenarios. Since the proposed methods are based on the cross-correlation of the operation of neighboring systems, they are particularly suitable performance assessment in urban environments. The proposed identification methods are integrated according to the adopted fog computing model, providing a scalable solution capable of uniform integration into the distributed applications for monitoring and maintenance of photovoltaic systems in urban areas. The details regarding the implementation of the identification methods in the form of data processing services and service operation and dependencies are also provided in this paper. The identification methods, integration concept, and related service operation are verified through the presented case study.
Highlights
In recent years, renewable technologies have become the main factor in the transformation of the global energy market, supporting aspirations for achieving sustainable development and low carbon emissions, while at the same time improving overall population health and worldwide energy access
The proposed methods are applicable for identifying panel aging properties, soiling effects, and the operation of photovoltaic systems under different shading scenarios
The proposed identification methods are integrated according to the adopted fog computing model, providing a scalable solution capable of uniform integration into the distributed applications for monitoring and maintenance of photovoltaic systems in urban areas
Summary
Renewable technologies have become the main factor in the transformation of the global energy market, supporting aspirations for achieving sustainable development and low carbon emissions, while at the same time improving overall population health and worldwide energy access. In urban environments, external factors such as climatic conditions, surrounding objects, installation properties, and geographical locations directly influence the outputs of the PV system The majority of these effects instantly diverge the PV energy production levels in relation to the available energy from solar irradiation [10]. Cross-correlation-based services and corresponding system-level parameters enable the discovery of erroneous measurements and sensor and operational faults, improving the reliability of information and the accuracy of performance assessment.
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