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GOOSE message
GOOSE messages (Generic Object Oriented Substation Event) are data packets which are transferred event-
controlled via the Ethernet communication system. They serve for direct information exchange among the
relays. This mechanism implements cross-communication between bay units.
GPS
Global Positioning System. Satellites with atomic clocks on board orbit the earth twice a day on different paths
in approx. 20,000 km. They transmit signals which also contain the GPS universal time. The GPS receiver de-
termines its own position from the signals received. From its position it can derive the delay time of a satellite
signal and thus correct the transmitted GPS universal time.
Hierarchy level
Within a structure with higher-level and lower-level objects a hierarchy level is a container of equivalent objects.
HV field description
The HV project description file contains details of fields which exist in a ModPara-project. The actual field infor-
mation of each field is stored in a HV field description file. Within the HV project description file, each field is
allocated such a HV field description file by a reference to the file name.
HV project description
All the data is exported once the configuration and parameterization of PCUs and sub-modules using ModPara
has been completed. This data is split up into several files. One file contains details about the fundamental
project structure. This also includes, for example, information detailing which fields exist in this project. This file
is called a HV project description file.
ID
Internal double point indication → Double point indication
ID_S
Internal double point indication, intermediate position 00 → Double point indication
IEC
International Electrotechnical Commission, international standardisation body
IEC address
Within an IEC bus a unique IEC address has to be assigned to each SIPROTEC 4 device. A total of 254 IEC
addresses are available for each IEC bus.
IEC communication branch
Within an IEC communication branch the users communicate on the basis of the IEC60-870-5-103 protocol via
an IEC bus.
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
Glossary
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