Signal Processing on PV Time-Series Data: Robust Degradation Analysis Without Physical Models

Meyers, Bennet; Deceglie, Michael; Deline, Chris; Jordan, Dirk

doi:10.1109/JPHOTOV.2019.2957646

Title: Signal Processing on PV Time-Series Data: Robust Degradation Analysis Without Physical Models

Journal Article · 23 December 2019 · IEEE Journal of Photovoltaics

DOI: https://doi.org/10.1109/JPHOTOV.2019.2957646 · OSTI ID:1836308

Meyers, Bennet ^[1]; Deceglie, Michael ^[1]; Deline, Chris ^[1]; Jordan, Dirk ^[1]

Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)

A novel unsupervised machine learning approach for analyzing time-series data is applied to the topic of photovoltaic (PV) system degradation rate estimation, sometimes referred to as energy-yield degradation analysis. This approach only requires a measured power signal as an input--no irradiance data, temperature data, or system configuration information. We present results on a data set that was previously analyzed and presented by NREL using RdTools, validating the accuracy of the new approach and showing increased robustness to data anomalies while reducing the data requirements to carry out the analysis.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Renewable Energy. Solar Energy Technologies Office

Grant/Contract Number:: AC02-76SF00515; AC3608GO28308; AC36-08GO28308; 34911; 30311; 34348

OSTI ID:: 1836308

Alternate ID(s):: OSTI ID: 1575280; OSTI ID: 1660085; OSTI ID: 1861114

Report Number(s):: NREL/JA-5K00-75031; TRN: US2001192

Journal Information:: IEEE Journal of Photovoltaics, Vol. 10, Issue 2; ISSN 2156-3381

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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References (16)

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Title: Signal Processing on PV Time-Series Data: Robust Degradation Analysis Without Physical Models

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