the GOOSE performance requirements for tripping applications in distribution
substations, as defined by the IEC 61850 standard.
The protection relay can support five simultaneous clients. If PCM600 reserves one
client connection, only four client connections are left, for example, for IEC 61850
and Modbus.
All communication connectors, except for the front port connector, are placed on
integrated optional communication modules. The protection relay can be connected
to Ethernet-based communication systems via the RJ-45 connector (100Base-TX) or
the fiber-optic LC connector (100Base-FX).
2.5.1
Self-healing Ethernet ring
For the correct operation of self-healing loop topology, it is essential that the
external switches in the network support the RSTP protocol and that it is enabled
in the switches. Otherwise, connecting the loop topology can cause problems to
the network. The protection relay itself does not support link-down detection or
RSTP. The ring recovery process is based on the aging of the MAC addresses, and
the link-up/link-down events can cause temporary breaks in communication. For a
better performance of the self-healing loop, it is recommended that the external
switch furthest from the protection relay loop is assigned as the root switch (bridge
priority = 0) and the bridge priority increases towards the protection relay loop.
The end links of the protection relay loop can be attached to the same external
switch or to two adjacent external switches. A self-healing Ethernet ring requires
a communication module with at least two Ethernet interfaces for all protection
relays.
Managed Ethernet switch
with RSTP support
Managed Ethernet switch
with RSTP support
Client B
Client A
Network A
Network B
Figure 6: Self-healing Ethernet ring solution
The Ethernet ring solution supports the connection of up to 30
protection relays. If more than 30 protection relays are to be connected,
it is recommended that the network is split into several rings with no
more than 30 protection relays per ring. Each protection relay has a 50-μs
store-and-forward delay, and to fulfil the performance requirements for
REC615 and RER615 overview
1MRS758755 C
36
REC615 & RER615
Technical Manual
Содержание Relion REC615
Страница 1: ... RELION PRODUCT FAMILY Grid Automation REC615 and RER615 Technical Manual ...
Страница 2: ......