Оn the issue of resistance to wind loads of vertical (faсade) photovoltaic plants

The aim of the work is to assess the reliability of the fastening elements of the facade photovoltaic station (PVS) of the building of the Ural Power Engineering Institute.

To correctly simulate the operating mode of the façade photovoltaic system, real conditions were taken into account, such as the stochastic nature of solar radiation, ambient temperature throughout the year, façade orientation and position of the photovoltaic system modules, building proportions, wind effects, etc.

An assessment was made of wind velocity, standard wind pressure, and bearing capacity of the PV system fastening elements for the city of Yekaterinburg. The modeling of the bearing capacity of the engineering elements for fastening the PVS to the wall of the building was carried out in the LIRA-SAPR software package, which implements the finite element method in the form of displacements. The method made it possible to determine the forces in the anchors of fastening the FES elements from wind loads, the weight of the panels and their combinations at various wind speeds and directions.

It is shown that the load does not exceed the maximum loads on the fastening elements of PVS obtained on the basis of tests – the maximum load on the anchor is 21,84 kN.

Taking into account the bearing capacity of the anchors for fastening PVS panels on their own weight, shear and tearing under the combined action of loads, the maximum permissible wind speed is 60,9 m/sec, which is significantly higher than the wind speed values 60,9 m/sec observed at present and predicted in connection with climate change for the city of Yekaterinburg.

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