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Title:
 
A New Metric for Assessing Local Mechanical Load Scenarios for PV Modules at Specific Locations
 
Author(s):
 
C. Camus, P. Offermann, M. Weissmann, C. Buerhop-Lutz, J. Hauch, C.J. Brabec
 
Keywords:
 
Reliability, Photovoltaic (PV), Forecast, Weather Conditions
 
Topic:
 
PV System Performance and Integration
Subtopic: Design and Operation of PV Systems
Event: 33rd European Photovoltaic Solar Energy Conference and Exhibition
Session: 6BV.1.28
 
Pages:
 
2274 - 2279
ISBN: 3-936338-47-7
Paper DOI: 10.4229/EUPVSEC20172017-6BV.1.28
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


In this paper, a new metric for assessing the location-specific mechanical loads imposed by snow or wind gusts which a photovoltaic module can be expected to be exposed to at a given location is introduced. For demonstrating this general approach, two locations of moderate distance (~110km) in Northern Bavaria are compared. It is shown that even on moderate distances the expected loads differ by a factor of four or more highlighting the importance of location-specific requirements for PV modules. For assessing the loads, the historical weather data of the closest surrounding weather station is evaluated in order to deduce an expectation value for the site of interest. This data is analyzed with respect to the frequency and severity of the relevant weather events such that the annuality of a weather event of a given severity can be determined. Finally, the severity of an event corresponding to a single occurrence in 20 years, i.e. a standard product warranty, is chosen to represent the requirements of a location with respect to a certain parameter.