METHOD EMPLOYING PACKET REPLACEMENT TO IMPLEMENT SECURITY PERMISSION FOR REMOTE OPERATION OF POWER GRID DISPATCHING

摘要

A method employing packet replacement to implement security permission for remote operation of power grid dispatching, comprising: adding an operation permission security gateway to a network channel of a communication exit of a front-end processor of a dispatching end, wherein after determining, by means of authentication, that an identity is valid, a Ukey-based security permission module built into the gateway inputs a permission instruction indicating whether a current operation is permitted, and after receiving an instruction indicating that the current operation is not permitted, an operation security control module in the gateway performs recognition on original packets; directly forwarding a non-operation packet without making any modification thereto; and configuring an application layer data segment of an operation packet to be zero, forwarding the same, not changing the other network protocol layers of the packet, and forwarding the same, such that the passing operation packet is modified to be invalid, without changing a communication process, so as to block execution of an operation command. The present invention achieves, without changing a routing parameter for dispatching communication, safety management and control for determining whether to permit execution of an operation command, has good adaptability, is easy to use, is safe and effective, and achieves non-inductive intervention.