photovolatische energy generating system and method for operating a pv - system

摘要

The invention relates to a photovoltaic energy generating system with at least one inverter (41), which by means of a ac - separating member (51) and at least one transformer (60) for supplying electrical power with a power supply network (70) is coupled. The pv - system further includes at least one with the inverter (41) is connected to the pv - subgenerator (10) and is characterized in that a protective device of an input-side protective device (12) with a the pv - subgenerator (10) associated dc - short-circuiting switch (13) for short-circuiting the pv - part generator (10) and a in the energy flow direction in the feeding (14) being connected downstream, as well as a protective device of the output side with an energy flow direction in front of the ac - separating member (51) arranged ac - short-circuiting switch (52) comprises. The plant is set up in the event of a fault, for this purpose, a short-circuiting the pv - part generator (10) by means of the input-side protective device (12) and an actuation of the ac - short end switch (52) with subsequent opening of the ac - cutting member (51) of the power supply system (70) to separate. The present invention also relates to an operating method for a pv - installation in the case of a fault, in particular in the case of a short circuit occurs within the pv - system.