Abstract
The Indian power sector is undergoing a transformation by implementing digital technologies to deal with the major challenges of higher AT&C losses. Implementation of digital technologies requires the use of various communicable devices as a part of the Operational Technology (OT) system that enables real-time monitoring and control of the power sector. In order to access information from external networks, these technologies connect the OT systems with Information Technology (IT) systems, which exposes the OT systems to potential cyber-attacks. Therefore, it is essential to validate the security implementation of OT devices to mitigate the risk of cyber-attacks on OT systems. Electricity distribution utilities are implementing a substation automation system, and one of the major components of a substation automation system is Remote Terminal Unit (RTU). This paper explains the importance of cyber security requirements, OT system security challenges and security implementation testing of Remote Terminal Unit (RTU) as per IEC 62351 standards.
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