The measurement, as accurate as possible, of solar irradiance is the starting point for the evaluation of photovoltaic (PV) power profiles in an electricity market in which many gigawatts of PV power are connected to the national network. This paper discusses the setup of five meteorological stations in South of Italy and the yearly experimental results of short-term global irradiance on the horizontal plane and on the best tilted plane. The 'broken clouds' phenomenon causes noticeable peaks in the irradiance and thus in the PV power. Its knowledge and prediction can be very useful to the Transmission System Operator for the management of peak generation. The evolution of relative humidity can give important information if the direct measurement of irradiance is missing. Finally, simple models for the irradiance in clear/cloudy sky situations can be used as a first approximation tool to predict the PV power profiles for the electricity market.

Accurate measurements of solar irradiance for evaluation of photovoltaic power profiles / Spertino, Filippo; DI LEO, Paolo; Cocina, VALERIA CONCETTA. - ELETTRONICO. - 1:(2013), pp. 1-5. ((Intervento presentato al convegno 2013 IEEE Grenoble Conference PowerTech tenutosi a Grenoble (France) nel 16-20 June 2013 [10.1109/PTC.2013.6652475].

Accurate measurements of solar irradiance for evaluation of photovoltaic power profiles

SPERTINO, Filippo;DI LEO, PAOLO;COCINA, VALERIA CONCETTA
2013

Abstract

The measurement, as accurate as possible, of solar irradiance is the starting point for the evaluation of photovoltaic (PV) power profiles in an electricity market in which many gigawatts of PV power are connected to the national network. This paper discusses the setup of five meteorological stations in South of Italy and the yearly experimental results of short-term global irradiance on the horizontal plane and on the best tilted plane. The 'broken clouds' phenomenon causes noticeable peaks in the irradiance and thus in the PV power. Its knowledge and prediction can be very useful to the Transmission System Operator for the management of peak generation. The evolution of relative humidity can give important information if the direct measurement of irradiance is missing. Finally, simple models for the irradiance in clear/cloudy sky situations can be used as a first approximation tool to predict the PV power profiles for the electricity market.
978-1-4673-5669-5
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2523285
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo