TY - GEN
T1 - Solar power variations in the regulation and sub-regulation time frames
AU - Acker, Tom L
AU - Willy, David M.
AU - Flood, Ronald K.
N1 - Publisher Copyright:
Copyright © 2014 by American Solar Energy Society.
PY - 2014
Y1 - 2014
N2 - Solar irradiance, as measured by a single pyranometer, can vary in excess of 80% from one second to the next, due to clouds passing over the sensor. This variation in irradiance translates directly into variation in power output of a solar photovoltaic (PV) power plant, though the large size of the plant compared to the sensor decreases the rate of these fluctuations due to spatial smoothing. In order to characterize the nature of these variations, a method of splitting-out PV power fluctuations into the 1-minute “regulation” and the sub 1-minute "sub-regulation" time scales is proposed. Results for a 2.6-MW PV power plant owned by Arizona Public Service Company are presented, focusing on 1-minute and 1-second fluctuations and related ramp rates. While many short, high magnitude ramps were experienced at the plant, none of them adversely affected voltages levels at the point of interconnect, the distribution feeder or the transmission substation.
AB - Solar irradiance, as measured by a single pyranometer, can vary in excess of 80% from one second to the next, due to clouds passing over the sensor. This variation in irradiance translates directly into variation in power output of a solar photovoltaic (PV) power plant, though the large size of the plant compared to the sensor decreases the rate of these fluctuations due to spatial smoothing. In order to characterize the nature of these variations, a method of splitting-out PV power fluctuations into the 1-minute “regulation” and the sub 1-minute "sub-regulation" time scales is proposed. Results for a 2.6-MW PV power plant owned by Arizona Public Service Company are presented, focusing on 1-minute and 1-second fluctuations and related ramp rates. While many short, high magnitude ramps were experienced at the plant, none of them adversely affected voltages levels at the point of interconnect, the distribution feeder or the transmission substation.
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M3 - Conference contribution
AN - SCOPUS:84944721417
T3 - 43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy
SP - 503
EP - 510
BT - 43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy
PB - American Solar Energy Society
T2 - 43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy
Y2 - 6 July 2014 through 10 July 2014
ER -