Photovoltaic system with trip function for fire protection

摘要

Various embodiments of the present invention relate to a photovoltaic power generation system having a trip function for fire prevention. An object of the present invention is to provide a photovoltaic power generation system which comprises a controllable DC-side blocking relay, and which turns off the DC-side blocking relay when a failure current is detected, thereby preventing a fire and providing a trip function. For this purpose, the present invention discloses the photovoltaic power generation system having a trip function for fire prevention, the photovoltaic power generation system comprising: a solar cell module; a solar connection board which is electrically connected to the solar cell module; and an inverter which is electrically connected to the solar connection board, which converts DC power into AC power, and which supplies the AC power to an AC system, wherein the inverter comprises: an input power sensor which measures DC-side input power; an output power sensor which measures AC-side output power; a relay which is disposed between a DC side and an AC side; and a control unit which turns off the relay when the input power measured by the input power sensor is different from the output power measured by the output power sensor.