Teleprotection Channel Tests; Teleprotection Commands - GE D90 Plus Instruction Manual

TELEPROTECTION INPUTS AND OUTPUTS

Teleprotection channel tests

Teleprotection commands

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Local Relay ID
Range: 0 to 255 in steps of 1
Default: 0
In installations that use multiplexers or modems, it is desirable to ensure that the data
used by the devices protecting a given line is from the correct device. The teleprotection
function performs this check by reading the message ID sent by transmitting UR
series devices and comparing it to the programmed terminal IDs in the receiving device.
Where redundancy is necessary the terminal IDs of both channels must be identical.
Three-terminal applications can be achieved by programming distinct terminal IDs for
each channel. The default value of "0" indicates that relay ID is not to be checked. The
same local relay ID is transmitted over both channels.
Channel 1 Teleprotection Terminal ID
Range: 0 to 255 in steps of 1
Default: 0
This setting specifies the ID of the transmitting device for channel 1. Refer to the
description for the Local Relay ID
Channel 2 Teleprotection Terminal ID
Range: 0 to 255 in steps of 1
Default: 0
This setting specifies the ID of the transmitting device for channel 2. Refer to the
description for the
Local Relay ID
Select the Actual Values > Communications > Teleprotection Channel Tests menu item
to open the teleprotection actual values window.
Figure 144: Teleprotection actual values
The following teleprotection actual values are available for each channel.
Status
Range: N/A, Fail, OK
This actual value represents the receiver status for each channel. If the value is "OK",
teleprotection is enabled and data is being received from the remote terminal. If the
value is "Fail", teleprotection is enabled and data is not being received from the remote
terminal. If the value is "n/a", then teleprotection is disabled.
Number of Lost Packets
Range: 0 to 65535 in steps of 1
This actual value represents data packets lost in transmission. This value can be reset to
zero using the Clear Teleprotection Counters command.
Select the Actual Values > Communications > Commands > Commands menu item to
open the inter-relay communications commands window.
for additional details.
for additional details.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: COMMUNICATIONS
Plus
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