Using Measured Plane-of-Array Data Directly in Photovoltaic Modeling: Methodology and Validation
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.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1347102
- Report Number(s):
- NREL/CP-6A20-67935
- Journal Information:
- Conference Record of the IEEE Photovoltaic Specialists Conference, Vol. 2016; Conference: 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), Portland, OR (United States), 5-10 Jun 2016; ISSN 0160-8371
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
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