Abstract
Currently, the know-how and experience concerning the behavior and
reliability of large tracking photovoltaic (PV) plants is scarce.
Information such as the availability rate is rarely known. Acciona
Solar PV plants installed in Navarra (Spain) in the frame of the
Spanish utility grid constitute a representative source of information.
The scope of this study is to analyze in detail the behavior along
2006 of six of these plants, located in Arguedas (two plants of a
rated nominal power of 940 kWp and 2,1 MWp, respectively), Sesma
(1,12 MWp), Cintruénigo (1,44 MWp), Rada (1,78MWp), and Castejón
(2,64MWp). In our analysis, the influence of each type of energy
loss affecting the plants has been quantified; and the advantages
of dedicating human resources to the surveillance and maintenance
of a limited number of generators have been stated. Thanks to the
work of the operators, the plants registered mean availability rates
above 99,7%.
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