Thesis CARACTERIZACIÓN DE LA CONDICIÓN DE OPERACIÓN DE GRANJAS SOLARES BASADO EN EL ANÁLISIS DE VARIABLES ELÉCTRICAS
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Date
2018-12
Authors
Journal Title
Journal ISSN
Volume Title
Program
DEPARTAMENTO DE INGENIERÍA ELÉCTRICA. INGENIERÍA CIVIL ELÉCTRICA
Campus
Campus San Joaquín, Santiago
Abstract
El gran impacto que ha tenido la energía solar fotovoltaica (desde ahora FV) supone una
serie de nuevos desafíos en la industria que no se tenían contemplados años atrás. Entre ellos se sitúa la pregunta de, “¿cuándo se debe realizar la limpieza sobre los paneles solares?”. Dicho cuestionamiento no es simple de responder ya que depende específicamente de la zona geográfica de estudio, además del precio de la energía y el costo de limpieza. El presente trabajo se centra en identificar algún patrón especial de comportamiento sobre un panel solar de baja potencia sometido a diferentes condiciones de operación. Los distintos ensayos se dividen principalmente en dos: iluminados y en oscuridad. Por un lado, los ensayos bajo excitación lumínica responden a pruebas donde el panel solar es cargado con una resistencia conocida de manera súbita o se somete a un ensayo de curva IV. Por otro lado, los ensayos en oscuridad excitarán el panel solar con tensión a modo de verificar su respuesta dinámica y estacionaria. Además, se realizarán pruebas de excitación sinusoidal en los terminales del panel solar FV. Los ensayos antes mencionados se realizarán sobre paneles ECODELTA de 10 [W], los cuales poseen 36 celdas solares en serie. Un panel se ensayará totalmente limpio, otro medianamente sucio y finalmente uno completamente sucio. La herramienta de análisis será la Transformada Rápida de Fourier (FFT) para verificar algún comportamiento especial en la frecuencia, las funciones temporales y las curvas de corriente y tensión.
The huge impact that photovoltaic solar energy has had assumes a series of new challenges within the industry who weren’t considered years past. Among them, there’s the wondering of “when should the cleaning of solar panels be done?”. This questioning is not easy to respond, as it depends specifically on a geographic zone of study, plus the price of the energy and also the cleaning cost itself. The present work centers on identifying some special pattern of behaviour, above a low power solar panel which is subjected to different operating conditions. Different tests tend to divide mainly in two: illuminated and in the darkness. For one side, the tests under light excitation respond to tests where the solar panel is charged with a ressistence suddenly known or is subjected to a test which is IV curved. On the other side, the tests done in the darkness will excite the solar panel with tension as a way of veryfing its dinamic and stationary responds. Furthermore, sinusoidal exctitement tests will be done in the terminals of the FV solar panel. The aforementioned tests will be done over ECODELTA panels of 10 [W], which have 36 solar cells in series. One panel will be tested fully clean, another one will be partially soiled, and a last one that will be completely soiled. The analysis toolwill be the Fast Fourier transform (FFT), applied to verify some special behaviour on the frequency, the temporal functions and the voltage and current curves.
The huge impact that photovoltaic solar energy has had assumes a series of new challenges within the industry who weren’t considered years past. Among them, there’s the wondering of “when should the cleaning of solar panels be done?”. This questioning is not easy to respond, as it depends specifically on a geographic zone of study, plus the price of the energy and also the cleaning cost itself. The present work centers on identifying some special pattern of behaviour, above a low power solar panel which is subjected to different operating conditions. Different tests tend to divide mainly in two: illuminated and in the darkness. For one side, the tests under light excitation respond to tests where the solar panel is charged with a ressistence suddenly known or is subjected to a test which is IV curved. On the other side, the tests done in the darkness will excite the solar panel with tension as a way of veryfing its dinamic and stationary responds. Furthermore, sinusoidal exctitement tests will be done in the terminals of the FV solar panel. The aforementioned tests will be done over ECODELTA panels of 10 [W], which have 36 solar cells in series. One panel will be tested fully clean, another one will be partially soiled, and a last one that will be completely soiled. The analysis toolwill be the Fast Fourier transform (FFT), applied to verify some special behaviour on the frequency, the temporal functions and the voltage and current curves.
Description
Keywords
PANELES SOLARES FOTOVOLTAICOS, ENERGIA SOLAR FOTOVOLTAICA, SISTEMAS DE ENERGIA FOTOVOLTAICA