Protection Interface and Protection Topology
Overview of Functions
The Protection topology and protection interface function enables data exchange between the devices via
synchronous serial point-to-point connections from 64 kBit/s to 2 MBit/s. These connections can be established
directly via optical fibers or via other communication media, for example via dedicated lines or via communi-
cation networks.
A protection topology consists of 2 to 6 devices which communicate via protection interfaces. It can be set up
either as a redundant ring or as a chain structure. Within a topology, the protection interfaces can have a
different bandwidth. Depending on the bandwidth, a certain amount of binary information and measured
values can be transmitted bi-directionally between the devices. The connection with the lowest bandwidth
defines this amount (of binary information and measured values).
The following information that is significant for the function of the protection interface is also transferred. You
cannot change this information:
•
Topology data and values are exchanged for monitoring and testing the connection.
The results are displayed on the device or with DIGSI 5.
•
Protection data, for example differential protection data or teleprotection scheme binary data, are trans-
ferred for distance protection and ground-fault protection.
•
The devices can be synchronized in time via the connection, whereby a device of the protection topology
assumes the role of the timing master.
The connection is continuously monitored for data faults and outage, and the time delay of the data is meas-
ured.
The protection interfaces are typically used for differential protection and with the teleprotection scheme for
distance protection and ground-fault protection. In SIPROTEC 5, you can configure protection interfaces in all
devices and then use them for further protection applications. At the same time, any binary information and
measured values can be transferred between the devices.
Structure of the Function
The protection interfaces of a device are located in the Protection communication function group. A device
has 1 or 2 specifically parameterizable protection interfaces.
The protection topology is used for administration of that topology data relevant to the respective interfaces
and containing data from other devices in the protection topology.
[dwstruct-030211-01.tif, 1, en_US]
Figure 3-37 Structure of the Protection Interface in a Device
The protection communication runs physically via a serial optical communication module. This module can
have 1 or 2 channels. The protection communication can take place via various modules. This depends on the
type of interface and the application. DIGSI 5 is used to configure 1 or 2 channels of a serial optical module as
a protection interface. This enables communication with the values set at the protection interface via this
channel.
3.5.3
3.5.3.1
3.5.3.2
System Functions
3.5 Protection Communication
112 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
To Next Page
Loading...
