Using Measured Plane-of-Array Data Directly in Photovoltaic Modeling: Methodology and Validation

Janine Keith, David Freestate, William Hobbs, Cameron Riley

Research output: Contribution to conferencePaperpeer-review

8 Scopus Citations

Abstract

Measured plane-of-array (POA) irradiance may provide a lower-cost alternative to standard irradiance component data for photovoltaic (PV) system performance modeling without loss of accuracy. Previous work has shown that transposition models typically used by PV models to calculate POA irradiance from horizontal data introduce error into the POA irradiance estimates, and that measured POA data can correlate better to measured performance data. However, popular PV modeling tools historically have not directly used input POA data. This paper introduces a new capability in NREL's System Advisor Model (SAM) to directly use POA data in PV modeling, and compares SAM results from both POA irradiance and irradiance components inputs against measured performance data for eight operating PV systems.

Original languageAmerican English
Pages2653-2656
Number of pages4
DOIs
StatePublished - 18 Nov 2016
Event43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: 5 Jun 201610 Jun 2016

Conference

Conference43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Country/TerritoryUnited States
CityPortland
Period5/06/1610/06/16

Bibliographical note

See NREL/CP-6A20-66465 for preprint

NREL Publication Number

  • NREL/CP-6A20-67935

Keywords

  • irradiance
  • modeling
  • performance
  • plane of array (POA)
  • PV
  • System Advisor Model (SAM)
  • validation

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