Teleprotection Inputs And Outputs; Teleprotection Configuration - GE D90 Plus Instruction Manual

CHAPTER 6: COMMUNICATIONS

Teleprotection inputs and outputs

NOTE:

Teleprotection configuration

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 142: Inter-relay communications commands
The following command is available for the direct inputs and outputs.
Clear Direct I/O Counters
This command clears the statistic counters for the direct input/output CRC fail count and
the unreturned message count.
Digital teleprotection functionality is designed to transfer protection commands between
two or three IEDs in a secure, fast, dependable, and deterministic fashion. Possible
applications are permissive or blocking pilot schemes and direct transfer trip (DTT).
Teleprotection can be applied over any analog or digital channels and any
communications media, such as direct fiber, copper wires, optical networks, or microwave
radio links. A mixture of communication media is possible.
Once teleprotection is enabled and the teleprotection inputs and outputs are configured,
data packets are transmitted continuously every ¼ cycle (⅜ cycle if using C37.94 modules)
from peer-to-peer. Security of communication channel data is achieved by using CRC-32
on the data packet. The baud rate between the peers must be the same for proper
operation of the teleprotection feature.
Teleprotection communication is supported between UR
Plus
UR -series and a UR-series IED over the G.703, C37.94, and RS422 communication
interfaces.
Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive – as such,
they cannot be used simultaneously. Once teleprotection inputs/outputs are enabled,
direct inputs/outputs are blocked, and vice versa.
Select the Settings > Communications > Teleprotection menu item to open the main
teleprotection configuration window.
Figure 143: Teleprotection configuration settings
The following teleprotection configuration settings are available.
TELEPROTECTION INPUTS AND OUTPUTS
Plus
-series IEDs or between a
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