Digital Substation

Digital Substation is an engineering publication focused on IEC 61850 automation, protection systems, and digital grid intelligence.

IEC 61850-8-1 (Technology)

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GOOSE is visible on the network, but the subscriber does not process it: a bug in the libIEC61850 library

The developers of the libIEC61850 library have released a fix for a bug that could cause valid GOOSE messages to be discarded by the receiving application. The problem affected version 1.6.2 and was caused by an incorrect Ethernet frame length check. The messages could be transmitted over the network successfully and appear in Wireshark, yet never reach the GOOSE subscriber's handler. This matters above all for developers of products supporting the IEC 61850 standard that use libIEC61850.

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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