Multi-level relay protection setting value single verification method, device and system based on block chain

The invention discloses a block chain-based multi-level relay protection setting value sheet verification method, device and system, and the method comprises the steps: obtaining a multi-level setting value sheet which is obtained through the calculation of a relay protection setting value through a scheduling node of a corresponding level; the target level setting value list and the level setting value list before the target level are connected, a signature is generated for the connected setting value list through a signature generation algorithm of a target level scheduling node, the signature is written into the block chain platform, and the target level scheduling node is selected from multiple levels of scheduling nodes; and based on the block chain platform, verifying the signature through a signature verification algorithm of the relay protection equipment. According to the method, the signatures are added to the traditional fixed value lists, the multi-level nodes are supported to issue different fixe