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Title: The Holy Grail of Resource Assessment: Low Cost Ground-Based Measurements with Good Accuracy

Abstract

Using performance data from some of the millions of installed photovoltaic (PV) modules with micro-inverters may afford the opportunity to provide ground-based solar resource data critical for developing PV projects. The method used back-solves for the direct normal irradiance (DNI) and the diffuse horizontal irradiance (DHI) from the micro-inverter ac production data. When the derived values of DNI and DHI were then used to model the performance of other PV systems, the annual mean bias deviations were within +/- 4%, and only 1% greater than when the PV performance was modeled using high quality irradiance measurements. An uncertainty analysis shows the method better suited for modeling PV performance than using satellite-based global horizontal irradiance.

Authors:
;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1365702
Report Number(s):
NREL/PO-5J00-68669
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2017 IEEE Photovoltaic Specialists Conference (PVSC-44), 25-30 June 2017, Washington, D.C.
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 29 ENERGY PLANNING, POLICY, AND ECONOMY; direct and diffuse irradiance; performance; model; micro-inverter; photovoltaics; pv systems

Citation Formats

Marion, Bill, and Smith, Benjamin. The Holy Grail of Resource Assessment: Low Cost Ground-Based Measurements with Good Accuracy. United States: N. p., 2017. Web.
Marion, Bill, & Smith, Benjamin. The Holy Grail of Resource Assessment: Low Cost Ground-Based Measurements with Good Accuracy. United States.
Marion, Bill, and Smith, Benjamin. Thu . "The Holy Grail of Resource Assessment: Low Cost Ground-Based Measurements with Good Accuracy". United States. doi:. https://www.osti.gov/servlets/purl/1365702.
@article{osti_1365702,
title = {The Holy Grail of Resource Assessment: Low Cost Ground-Based Measurements with Good Accuracy},
author = {Marion, Bill and Smith, Benjamin},
abstractNote = {Using performance data from some of the millions of installed photovoltaic (PV) modules with micro-inverters may afford the opportunity to provide ground-based solar resource data critical for developing PV projects. The method used back-solves for the direct normal irradiance (DNI) and the diffuse horizontal irradiance (DHI) from the micro-inverter ac production data. When the derived values of DNI and DHI were then used to model the performance of other PV systems, the annual mean bias deviations were within +/- 4%, and only 1% greater than when the PV performance was modeled using high quality irradiance measurements. An uncertainty analysis shows the method better suited for modeling PV performance than using satellite-based global horizontal irradiance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jun 22 00:00:00 EDT 2017},
month = {Thu Jun 22 00:00:00 EDT 2017}
}

Conference:
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