Cyber Security Architecture for Substation and Distribution Automation Systems

This paper discusses practices and methods for creating robust cyber security architectures for substation and distribution automation systems, emphasizing a defense-in-depth strategy to withstand and recover from cyber-attacks while maintaining core functionality. It covers challenges related to IT-OT network integration, applicable security standards (NERC CIP, IEC 62443, ISO 27000), and specific security control measures including physical security, access management, audit trails, and network separation.