Localized component protection system

The invention relates to a localized component protection system, comprising at least one protection sub-machine, wherein the protection sub-machine comprises an auxiliary control device and a protection control device in communication connection, the auxiliary control device is provided with a timing signal receiving port, a second communication port and a communication port, and the auxiliary control device is connected to a two-way information acquisition device; the auxiliary control device receives and synchronizes two-way data information of protected equipment, and sends the synchronized two-way data information to an SV network; one way of the data information is sent to the protection control device, and start logic determination is performed according to the synchronized two-waydata information; the protection control device is configured to receive one way of the data information and perform protection logic discrimination and start logic determination; and if the start logic determination and the