PHOTOVOLTAIC POWER GENERATION SYSTEM, FAULT PROTECTION METHOD AND DEVICE THEREFOR, COMBINER BOX THEREOF, AND INVERTER THEREOF

A photovoltaic power generation system, a fault protection method and device therefor, a combiner box thereof, and an inverter thereof, relating to the technical field of photovoltaic power generation. The system comprises power conversion units, multi-pole linkage switches, and N photovoltaic strings. The method comprises: when a fault occurs in a photovoltaic power generation system, controlling switching transistors in power conversion units to enable a positive input end of each power conversion unit to be shorted to a negative input end of each power conversion unit, and controlling multi-pole linkage switches to be switched off, such that at most three of the N photovoltaic strings are connected in parallel. L'invention concerne un système de production d'énergie photovoltaïque, un procédé de protection contre les défaillances et un dispositif s'y rapportant, une boîte de combinaison associée, et un onduleur associé, se rapportant au domaine technique de la production d'énergie photovoltaïque. Le systèm