Arc light protection system

The invention discloses an arc light protection system which comprises a plurality of single-cabinet protection devices. The single-cabinet protection device is used for protecting one power transformation device; the single-cabinet protection device comprises a source end switch device, a load end switch device, a current sensor, a main control module and a plurality of arc light probes. Wherein the main control module comprises a current judgment unit which is used for sending a tripping signal to the source end switch device or/and the load end switch device when the current value acquired by the current sensor is greater than a preset value; the optical judgment unit is used for sending a tripping signal to the source end switch device or/and the load end switch device when the arc light probe detects the arc light; and the history judgment unit is used for judging whether a tripping signal needs to be sent to the source end switch device or/and the load end switch device. The arc light protection system