An On-Line Low-Cost Irradiance Monitoring Network with Sub-Second Sampling Adapted to Small-Scale PV Systems
AbstractVery short-term solar forecasts are gaining interest for their application on real-time control of photovoltaic systems. These forecasts are intimately related to the cloud motion that produce variations of the irradiance field on scales of seconds and meters, thus particularly impacting in small photovoltaic systems. Very short-term forecast models must be supported by updated information of the local irradiance field, and solar sensor networks are positioning as the more direct way to obtain these data. The development of solar sensor networks adapted to small-scale systems as microgrids is subject to specific requirements: high updating frequency, high density of measurement points and low investment. This paper proposes a wireless sensor network able to provide snapshots of the irradiance field with an updating frequency of 2 Hz. The network comprised 16 motes regularly distributed over an area of 15 m × 15 m (4 motes × 4 motes, minimum intersensor distance of 5 m). The irradiance values were estimated from illuminance measurements acquired by lux-meters in the network motes. The estimated irradiances were validated with measurements of a secondary standard pyranometer obtaining a mean absolute error of 24.4 W/m
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Espinosa-Gavira, M.J.; Agüera-Pérez, A.; González de la Rosa, J.J.; Palomares-Salas, J.C.; Sierra-Fernández, J.M. An On-Line Low-Cost Irradiance Monitoring Network with Sub-Second Sampling Adapted to Small-Scale PV Systems. Sensors 2018, 18, 3405.
Espinosa-Gavira MJ, Agüera-Pérez A, González de la Rosa JJ, Palomares-Salas JC, Sierra-Fernández JM. An On-Line Low-Cost Irradiance Monitoring Network with Sub-Second Sampling Adapted to Small-Scale PV Systems. Sensors. 2018; 18(10):3405.Chicago/Turabian Style
Espinosa-Gavira, Manuel J.; Agüera-Pérez, Agustín; González de la Rosa, Juan J.; Palomares-Salas, José C.; Sierra-Fernández, José M. 2018. "An On-Line Low-Cost Irradiance Monitoring Network with Sub-Second Sampling Adapted to Small-Scale PV Systems." Sensors 18, no. 10: 3405.
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