Abstract
The security of communication protocols in the smart grid system is a crucial concern. An adversary can exploit the lack of confidentiality and authentication mechanism to cause damaging consequences. In the substation automation systems that rely on multicast communication between various intelligent electronic devices, the lack of security features in the standard IEC61850 and IEC62351 can invite attackers to manipulate the integrity of the employed publisher–subscriber communication paradigm to their advantage. Consequently, many researchers have introduced various approaches offering authenticity and confidentiality. However, such schemes and methods for the aforesaid standards have computational limitations in compliance with the stringent timing requirements of specific applications in the smart grid. In this paper, we propose an approach that can fully secure the publisher–subscriber communication against confidentiality attacks. In this direction, we develop a demo tool to validate the performance of our proposed security approach for potential factors such as timing requirements and the size of the messages. Finally, we evaluate our scheme considering the requirements of the GOOSE, SMV, and MMS protocols in the substation automation systems.
Highlights
Power grid networks are becoming an evolutionary step of providing electricity in long distances; the digitized paradigm has improved its control and performance capabilities
The sender and receiver are treated as two nodes in a network, with communication between the nodes handled by the network class to simulate communication over a network
We evaluate the suitability of our approach and experimental results concerning the implementation into smart grid infrastructure
Summary
Power grid networks are becoming an evolutionary step of providing electricity in long distances; the digitized paradigm has improved its control and performance capabilities. The manufacturing message specification (MMS) is an ISO 9506 standard that is used to transfer real-time process data and control information between the network devices, such as an IED and the HMI application running on a PC. It follows a more traditional client–server model for communication. Various services in substation employ GOOSE in the publisher–subscriber model, such as a generic substation event, i.e., a control model defined as per IEC 61850 responsible for the fast mechanism of transferring event data across substation network Towards this end, the publisher multicast the written values in a transmission buffer to different subscribers.
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