查看文章

Information and Communications Technology (ICT) supports the development of novel control and communication functions for monitoring, operation, and control of power systems. However, the high-level deployment of ICT also increases the risk of cyber intrusions for Supervisory Control And Data Acquisition (SCADA) systems. Attackers can gain access to the protected infrastructures of the grid and launch attacks to manipulate measurements at the substations. The fabricated measurements can mislead the operators in the control center to take undesirable actions. The Intrusion Detection System (IDS) proposed in this paper is deployed in IEC 61850 based substations. The proposed IDS identifies falsified measurements in Manufacturing Messaging Specification (MMS) messages. By cross-checking the consistency of electric circuit relationships at the substation level in a distributed manner, the falsified …