Abstract:

With the large-scale application of photovoltaic power generation systems,the fire risk caused by arc faults on the DC side has become increasingly prominent.As a critical safety device,the performance testing of photovoltaic DC arc fault detection devices (PV DC AFDD) is crucial in terms of scientificity and reliability.By analyzing mainstream PV DC AFDD testing standards,the detection circuit architecture is dissected,the functions of various modules within the circuit and their correspondence to actual wiring are examined,and the testing method for series arc fault operating characteristics is illustrated using a PV DC AFDD testing platform.PV DC AFDD testing is precisely aligned with practical application scenarios,various influencing factors in PV DC AFDD testing are analyzed,and the guiding value of PV DC AFDD testing results is enhanced.

Key words: DC arc fault detection device, test circuit, module functions, standard adaptation