Synchronization Function
Overview of Functions
The Synchronization function (ANSI 25) checks whether the activation is permissible without a risk to the
stability of the system when interconnecting 2 parts of an electrical power system.
Typical applications are as follows:
•
The synchronization of a line and a busbar
•
The synchronization of 2 busbars via a cross-coupling
•
The synchronization of a generator and a busbar
A power transformer between the 2 measuring points can also be taken into consideration.
The following operating modes are covered:
•
Synchrocheck
•
Switching synchronous power systems
•
Switching asynchronous power systems
•
Switching to dead line/busbar
Structure of the Function
The Synchronization function is used in the Circuit-breaker function group.
The following stage types can be used within the function:
•
Synchrocheck stage
•
Synchronous/asynchronous stage
The Synchrocheck and Synchronous/Asynchronous (Sychr./Asycr.) stage types are preconfigured at the
factory.
In addition, the stage type Extended delta-f options are available in the function library. This has not been
preconfigured.
You can operate a maximum of 2 stages of the Synchrocheck stage type or 6 stages of the Synchronous/
asynchronous in parallel.
As soon as the function is available in the device, the functional measured values are calculated and displayed.
6.4
6.4.1
6.4.2
Control Functions
6.4 Synchronization Function
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SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
Summary of Contents for 6MD85
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