WP-015-2019: Security roadmap for substation automation

Many grid operators are considering new use cases for substation automation, such as direct IEC 61850 communication between the control center and IEDs, remote configuration of IEDs, and collecting disturbance data directly from IEDs. These use cases do not fit in the security architecture developed in the ENCS member project on substation automation. A key measure in this architecture is that IEDs cannot be accessed directly from central systems. This document describes the new security functions that would be needed in IEDs to allow direct access and keep them secure in future use cases.

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