The invention discloses a rapid protection system, which comprises three sets of same relay protection devices and at least one set of two-out-of-three logic device, wherein each set of relay protection device is connected with each set of two-out-of-three device and carries out protection action outlet through the two-out-of-three device; the rapid protection system is characterized by also comprising rapid protection modules which are the same as the two-out-of-three devices in quantity; the fast protection modules extract electrical quantity parameters corresponding to multiple rapid protections from merging units; and when the electrical quantity parameters meet the judgment conditions of at least one rapid protection, protection action outlet is carried out. Preferably, two sets of two-out-of-three devices and two sets of rapid protection modules are provided. The performance and the cost of the relay protection system are comprehensively considered, the problem of a protection action delay or an increase of the load rate of the protection system in a failure is solved, and the quickness, the reliability and the stability of the protection system are improved.