Siemens SIPROTEC 7UT613 series Manual page 626

Glossary
GOOSE message
GPS
Hierarchy level
HV field description
HV project descrip-
tion
ID
ID_S
IEC
IEC address
IEC communication
branch
IEC61850
Initialization string
626
image. The current process state can also be sampled after a data loss by means of
a GI.
GOOSE messages (Generic Object Oriented Substation Event) are data pakets 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.
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 determines 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.
Within a structure with higher-level and lower-level objects a hierarchy level is a con-
tainer of equivalent objects.
The HV project description file contains details of fields which exist in a ModPara-
project. The actual field information 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.
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.
Internal double point indication → Double point indication
Internal double point indication, intermediate position 00 → Double point indication
International Electrotechnical Commission, international standardisation body
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.
Within an IEC communication branch the users communicate on the basis of the
IEC60-870-5-103 protocol via an IEC bus.
International communication standard for communication in substations. The objective
of this standard is the interoperability of devices from different manufacturers on the
station bus. An Ethernet network is used for data transfer.
An initialization string comprises a range of modem-specific commands. These are
transmitted to the modem within the framework of modem initialization. The com-
mands can, for example, force specific settings for the modem.
7UT613/63x Manual
C53000-G1176-C160-2