Digital Substation

Relay protection, SCADA, Metering, and Cybersecurity for electrical infrastructure.

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Machine-processable Format of IEC 61850 Data Models

IEC TC 57 proposes a new work item (57/1768/NP) IEC 61850-7-7: Communication networks and systems for power utility automation – Part 7-7: Basic communication structure – Machine-processable format of IEC 61850-related data models for tools (proposed 61850-7-7). Closing date for voting: 2016-11-25.

Network infrastructure in digital substations

A local area network is critical infrastructure in a digital substation. Experts in the area of relay protection and automatic as well as automated process control systems run into it with increasing frequency, while the number of questions such as, ‘How to design it?’, ‘How to maintain it?’, ‘How to evaluate its security and effectiveness?’ only increases.

Alstom Technology and Schneider Electric patented merging unit

Abstract for the patent Merging unit and method of operating a merging unit states the following: A merging unit including at least one input interface for receiving input data characterizing at least one voltage and/or current related to a component of a...

ABB introduced MMS support for AFS series Ethernet switches

The number of Ethernet switches with integrated IEC 61850-8-1 server increases. Manufacturers do not only implement standard logical node classes according to IEC 61850-7-4 but also those ones introduced by IEC 61850-90-4 technical report. These switches do also support buffered and unbuffered reporting mechanisms. Seems like the closest future is the one where IEC 61850-8-1 (MMS) communications will replace communications over SNMP (being widely used at the moment). This will allow for integration of Ethernet switches in process control systems the same way as it is done with IEC 61850-8-1 pr

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