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Title: Identification of periods of clear sky irradiance in time series of GHI measurements

Journal Article · · Renewable Energy
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

In this study, we present a simple algorithm for identifying periods of time with broadband global horizontal irradiance (GHI) similar to that occurring during clear sky conditions from a time series of GHI measurements. Other available methods to identify these periods do so by identifying periods with clear sky conditions using additional measurements, such as direct or diffuse irradiance. Our algorithm compares characteristics of the time series of measured GHI with the output of a clear sky model without requiring additional measurements. We validate our algorithm using data from several locations by comparing our results with those obtained from a clear sky detection algorithm, and with satellite and ground-based sky imagery.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1239983
Alternate ID(s):
OSTI ID: 1360650
Report Number(s):
SAND-2015-10900J; PII: S0960148115305358
Journal Information:
Renewable Energy, Vol. 90, Issue C; ISSN 0960-1481
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 88 works
Citation information provided by
Web of Science

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Estimating Shortwave Clear‐Sky Fluxes From Hourly Global Radiation Records by Quantile Regression journal August 2019
Estimating Shortwave Clear-Sky Fluxes From Hourly Global Radiation Records by Quantile Regression text January 2019
Estimating Shortwave Clear-Sky Fluxes From Hourly Global Radiation Records by Quantile Regression text January 2019