Updating method and device of redundant measurement and control device and redundant measurement and control device

The invention is suitable for the technical field of power systems, and provides a redundant measurement and control device updating method and device and a redundant measurement and control device, and the method comprises the steps: receiving an updating request sent by a file management device; wherein the update request carries a signed to-be-updated data packet, and the file management device is a software tool used for determining whether the redundant measurement and control device needs to be updated or not; performing signature verification on the signed to-be-updated data packet according to a set public key; and if the signature verification is passed, updating the redundant measurement and control device according to the to-be-updated data packet. Compared with the prior art in which the to-be-updated data packet is obtained and directly updated, the method provided by the invention has the advantages that signature verification needs to be carried out on the signed to-be-updated data packet carri