A SDN Based Method for Blocking Malicious Attacks on Digital Substations Communication

IEC 61850 is the present standard recommended for the power system substations. The transition to IEC 61850 challenges the classical approaches of substation engineers especially regarding ensuring a high level of trustfulness in the communication. This paper presents a method for detecting and blocking the injection of malicious or replicated messages in a digital substation. This addresses both sampled values and GOOSE packets. Moreover, an example of implementation is presented and validated on an experimental setup replicating the behavior of a digital substation.