Short-term irradiance variability: Preliminary estimation of station pair correlation as a function of distance

被引：105

作者：

Perez, Richard ^{[1
]}

Kivalov, Sergey ^{[1
]}

Schlemmer, Jim ^{[1
]}

Hemker, Karl, Jr. ^{[1
]}

Hoff, Thomas E. ^{[2
]}

机构：

[1] SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12203 USA

[2] Clean Power Res, Napa, CA 94558 USA

来源：

SOLAR ENERGY | 2012年 / 86卷 / 08期

关键词：

Irradiance; Variability; High frequency; PV grid interaction; RADIATION;

D O I：

10.1016/j.solener.2012.02.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this article, we report on the correlation between the irradiance variability observed at two neighboring sites as a function of their distance, and of the considered variability time scale. Correlation is the factor that determines whether the combined relative fluctuations of two solar systems add up when correlation is high, or attenuate when correlation is low. Using one-dimensional virtual networks in 24 US locations and cloud motion derived from satellites as experimental evidence, we observe station pair correlations for distances ranging from 100 m to 100 km and from variability time scales ranging from 20 s to 15 min. Within the limits of the assumptions from one-dimensional virtual networks, results show that the relationship between correlation, distance and time scale is predictable and largely independent of location and prevailing insolation conditions. Further, results indicate that the distance at which station pairs become uncorrelated is a quasi linear function of the considered time scale. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2170 / 2176

页数：7