EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 5CV.2.7 PV Plant Monitoring Needs Both – Data Analysis and On-Site Inspection
Type: Visual
Date: Wednesday, 8th September 2021
13:30 - 15:00
Author(s): W. Mühleisen, L. Neumaier, J. Kosel, C. Hirschl, R. Rattenberger, P. Prasser
Presenter / Speaker: W. Mühleisen, SAL Silicon Austria Labs, Villach, Austria
Event: Conference Conference
Session: 5CV.2 Operation, Performance and Maintenance of PV Systems
Topic: 5. 3 Operation, Performance and Maintenance of PV Systems
Keywords: Monitoring, System Performance
Summary / Abstract: Photovoltaic systems can be controlled with several approaches. By means of monitoring or with sample measurements on site. On a 9-year-old photovoltaic system with 970 kWp in the south of Austria, both approaches were pursued to investigate whether a cost-effective monitoring analysis alone is sufficient. The identification and partial repair of several superimposed failure cases such as shading, dirt, glass breakage and backsheet cracks ultimately showed that a data analysis with a determined performance ratio alone is not sufficient to draw complete conclusions about PV system and energy yield.