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Title: Quantifying PV power Output Variability

This paper presents a novel approach to rigorously quantify power Output Variability from a fleet of photovoltaic (PV) systems, ranging from a single central station to a set of distributed PV systems. The approach demonstrates that the relative power Output Variability for a fleet of identical PV systems (same size, orientation, and spacing) can be quantified by identifying the number of PV systems and their Dispersion Factor. The Dispersion Factor is a new variable that captures the relationship between PV Fleet configuration, Cloud Transit Speed, and the Time Interval over which variability is evaluated. Results indicate that Relative Output Variability: (1) equals the inverse of the square root of the number of systems for fully dispersed PV systems; and (2) could be further minimized for optimally-spaced PV systems. (author)
Authors:
 [1] ;  [2]
  1. Clean Power Research, Napa, CA (United States)
  2. ASRC, The University at Albany, Albany, NY (United States)
Publication Date:
OSTI Identifier:
21350409
Resource Type:
Journal Article
Resource Relation:
Journal Name: Solar Energy; Journal Volume: 84; Journal Issue: 10; Other Information: Elsevier Ltd. All rights reserved
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOVOLTAIC POWER PLANTS; PRODUCTION; CLOUDS; CONFIGURATION; ORIENTATION; VELOCITY; VARIATIONS; POWER GENERATION; DISPERSED STORAGE AND GENERATION