Method for monitoring individual PV modules in a system comprising a plurality of photovoltaic modules and a device for performing the method above

摘要

Method for monitoring photovoltaic modules (1, 2) used in forming by unapluralidad of photovoltaic modules connected in particular in series system, through an electrical line (3), wherein the respective photovoltaic module (1, 2) own microcontroller (5) is associated, particularly continuous determination of at least one state parameter of módulofotovoltaico respective (1, 2) by the microcontroller (5), the data relating to the status parameter transmitted is performed to an evaluation unit (10), the data provided for transmission to the evaluation unit (10) are designed as dedatos blocks (7, 8), for transmitting data blocks (7, 8) using existing for connection delos photovoltaic modules (1) individual, power lines (3) the data blocks (7, 8) are independently transmitted from each other, so that the probability decolis ion data blocks (7, 8) together is greater than 0, each microcontroller (5) waits for a latency time Tw randomly generated until data block (7, 8) proporcionaun to line electric (3), characterized in that the half-latency random ΔTwcumple the following condition where N represents the number of PV modules in series, TD is the time required for transmisiónde a data block, and ΔCR represents the average rate errors due to collision data block.