QCPV: A quality control algorithm for distributed photovoltaic array power output

•We note the absence of a standard method for quality controlling solar PV data.•We present a two-part approach to parameterize and quality control PV power output.•The parameterization captures system specific metadata (tilt, azimuth, loss factor).•The quality control routine applies system specifi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Solar energy Jg. 143; S. 120 - 131
Hauptverfasser: Killinger, Sven, Engerer, Nicholas, Müller, Björn
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Elsevier Ltd 01.02.2017
Pergamon Press Inc
Schlagworte:
Distributed photovoltaics
Electric power
Measurement
Metadata
Output
Parameterization of metadata
Power output
Quality control
Solar energy
Parameterization of metadata
Power output
Distributed photovoltaics
Quality control
ISSN:0038-092X, 1471-1257
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:•We note the absence of a standard method for quality controlling solar PV data.•We present a two-part approach to parameterize and quality control PV power output.•The parameterization captures system specific metadata (tilt, azimuth, loss factor).•The quality control routine applies system specific and across system checks. Distributed PV power output measurements and their metadata are subject to significant errors and uncertainty. However, no standard mechanism for quality controlling these data is currently available within the literature. For this purpose, we present a two part approach to parameterize PV system metadata and quality control their power output measurements. These methods are based on open-source solver routines and require only one exogenous input (ambient temperature), and therefore are widely applicable. The method allows for PV array orientation to be determined to within ∼4°. Furthermore a loss factor LF is derived which captures overall PV system losses and correctly detects a mean degradation of the modules of ∼0.5% per annum over time. The central routine, entitled QCPV, imposes system specific limits on the measured data mainly through the use of the extraterrestrial irradiance and the clear sky index for photovoltaics kpv. It also enables, amongst other things, the detection of cloud enhancement events and spurious power output reporting through the application of across systems statistics.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2016.12.053