Automatic fault alarm system for photovoltaic power generation assembly

A photovoltaic power generation assembly fault automatic alarm system disclosed by the present invention comprises a detection assembly, the detection assembly comprises a connection pipe, a copper core, a bypass diode, a protection sleeve, a reset member, a heat dissipation member and a limiting member, the copper core is fixed in the connection pipe, the bypass diode is fixed at the end portion of the copper core, and the protection sleeve is fixed in the detection assembly. The protective sleeve slides on the surface of the connecting pipe, the reset piece is arranged on the connecting pipe, the heat dissipation piece is located on the protective sleeve, and the limiting pieces are arranged at the top and the bottom of the connecting pipe. According to the invention, fault alarm can be automatically carried out in the operation process of the photovoltaic system through the alarm unit, so that a worker can find and process a fault in time, and then the disassembly and assembly efficiency and safety of the