GEK-106310-AF
F650 DIGITAL BAY CONTROLLER
7-1
F650 Digital Bay Controller
Chapter 7: IEC 61850 protocol
GE
Grid Solutions
IEC 61850 PROTOCOL
7.1 IEC 61850 generic substation state event (GSSE)
7.1.1 Overview
IEC 61850 specifies two types of peer-to-peer data transfer services: Generic Substation State Events (GSSE) and Generic
Object Oriented Substation Events (GOOSE). Both GSSE and GOOSE messages are designed to be short, reliable, and high
priority.
GSSE services are compatible with UCA 2.0 GOOSE. IEC 61850 GOOSE services provide virtual LAN (VLAN) support, Ethernet
priority tagging, and Ethertype Application ID configuration. The support for VLANs and priority tagging allows for the
optimization of Ethernet network traffic. GOOSE messages can be given a higher priority than standard Ethernet traffic,
and they can be separated onto specific VLANs. Because of the additional features of GOOSE services versus GSSE
services, it is recommended that GOOSE be used wherever backwards compatibility with GSSE (or UCA 2.0 GOOSE) is not
required.
Devices that transmit GSSE and/or GOOSE messages also function as servers. Each GSSE publisher contains a "GSSE
control block" to configure and control the transmission. Each GOOSE publisher contains a "GOOSE control block" to
configure and control the transmission. The transmission is also controlled via device settings. These settings can be seen
in the ICD and/or SCD files, or in the device configuration software or files. IEC 61850 recommends a default priority value
of 4 for GOOSE. Ethernet traffic that does not contain a priority tag has a default priority of 1. More details are specified in
IEC 61850 part 8-1. IEC 61850 recommends that the Ethertype Application ID number be configured according to the
GOOSE source. A common number may be used for all GOOSE transmitters in a system. More details are specified in IEC
61850 part 8-1.
GSSE messages contain a fixed set of digital points. IEC 61850 GOOSE messages can, in general, contain any configurable
data items. When used by the remote input/output feature, IEC 61850 GOOSE messages contain the same data as GSSE
messages. The GSSE message structure contains space for 128 bit pairs representing digital point state information. In
addition to digital point states, GSSE/GOOSE messages identify the originator of the message and provide other
information required by the communication specification. All devices listen to network messages and capture data only
from messages that have originated from selected devices
Summary of Contents for F650
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