Substation

Private Wireless Networks with Combined Technologies - The Future of Utility Communications

by Andreas Klien, OMICRON electronics GmbH, Austria

Multiple layers are necessary to ensure the cyber security of substations. Cryptography allows authentication of devices, but not all attacks can be prevented by these measures. Firewalls and "air gaps" can be circumvented through existing remote access tunnels, or through maintenance computers directly attached to IEDs or the station bus. Therefore, measures are needed to detect threats in the substation to enable quick response and to minimize consequences. This article will describe security requirements of IEC 61850 substations and the different approaches for detecting threats in these networks. Subsequently, an approach will be described specifically developed for the IEC 61850 station and process bus.More

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