Date and Time Synchronization
Overview of Functions
Timely recording of process data requires precise time synchronization of the devices. The integrated date/
time synchronization allows the exact chronological assignment of events to an internally managed device
time that is used to time stamp events in logs, which are then transmitted to a substation automation tech-
nology or transferred via the protection interface. A clock module internal to the device and having battery
backup is synchronized cyclically with the current device time so that the right device time is available and
used even in case of auxiliary-voltage failure. At the same time, this permits hardware-supported monitoring
of the device time.
Structure of the Function
The integrated date/time synchronization is a supervisory device function. Setting parameters and indications
can be found in the following menus for the DIGSI and the device:
Set date and time:
•
DIGSI: Online access -> Interface -> Device -> Device Information -> Time Information
•
Device: Main menu → Device functions → Date & Time
Parameter:
•
DIGSI: Project -> Device -> Parameter -> Time Settings
Indications:
•
DIGSI: Project -> Device -> Information routing ->Time keeping or Time Sync.
Function Description
Every SIPROTEC 5 device maintains an internal device time with date. The date and time can also be set on the
device via the on-site operation panel or via DIGSI 5. Within a system, or even beyond, it is usually necessary to
record the time of process data accurately and to have exact time synchronization of all devices. For SIPROTEC
5 devices, the sources of time and synchronization options can be configured.
Configurable Synchronization Options:
•
None (default setting)
The device functions without any external time synchronization. The internal time synchronization
continues to work with the help of the back-up battery even when the auxiliary voltage is shut down
temporarily. The time can be adjusted manually.
•
Telegram
The time is synchronized via a telegram with an appropriately configured communication interface in
accordance with the IEC 60870-5-103 or DNP3 protocol.
•
Connection to a radio clock
The time synchronization takes place with the set time telegram from an external IRIG-B or DCF77
receiver via the time synchronization interface of the device.
•
Ethernet
The time synchronization is done via Ethernet-based SNTP protocol (Simple Network Time Protocol), for
example with IEC 61850 stations or via IEEE 1588. If you enable both services during configuration of
Ethernet interfaces, these protocols are available as an option for the time synchronization.
•
Protection interface
The time synchronization takes place via the protection interfaces configured for your SIPROTEC 5 device.
Here, the timing master takes over the time management.
3.6
3.6.1
3.6.2
3.6.3
System Functions
3.6 Date and Time Synchronization
SIPROTEC 5, High-Voltage Bay Controller, Manual 129
C53000-G5040-C015-9, Edition 11.2017
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