GE Multilin
D60 Line Distance Protection System
5-89
5 SETTINGS
5.2 PRODUCT SETUP
5
5.2.16 DIRECT INPUTS AND OUTPUTS
a) MAIN MENU
PATH: SETTINGS
PRODUCT SETUP
DIRECT I/O
This option is available when an INTER-RELAY COMMUNICATIONS card is specified at the time of order-
ing. With the option, direct inputs/outputs display by default. When you enable the teleprotection feature,
direct I/O is not visible.
Direct inputs and outputs are intended for exchange of status information (inputs and outputs) between UR-series relays
connected directly via type 7 digital communications cards. The mechanism is very similar to IEC 61850 GSSE, except that
communications takes place over a non-switchable isolated network and is optimized for speed. On type 7 cards that sup-
port two channels, direct output messages are sent from both channels simultaneously. This effectively sends direct output
messages both ways around a ring configuration. On type 7 cards that support one channel, direct output messages are
sent only in one direction. Messages will be resent (forwarded) when it is determined that the message did not originate at
the receiver.
Direct output message timing is similar to GSSE message timing. Integrity messages (with no state changes) are sent at
least every 1000 ms. Messages with state changes are sent within the main pass scanning the inputs and asserting the
outputs unless the communication channel bandwidth has been exceeded. Two self-tests are performed and signaled by
the following FlexLogic operands:
1.
DIRECT RING BREAK
(direct input/output ring break). This FlexLogic operand indicates that direct output messages
sent from a UR-series relay are not being received back by the relay.
2.
DIRECT DEVICE 1 OFF to DIRECT DEVICE 16 OFF
(direct device offline). These FlexLogic operands indicate that direct
output messages from at least one direct device are not being received.
Direct input and output settings are similar to remote input and output settings. The equivalent of the remote device name
strings for direct inputs and outputs is the
DIRECT OUTPUT DEVICE ID
. The
DIRECT OUTPUT DEVICE ID
setting identifies the
relay in all direct output messages. All UR-series IEDs in a ring should have unique numbers assigned. The IED ID is used
to identify the sender of the direct input and output message.
If the direct input and output scheme is configured to operate in a ring (
DIRECT I/O CH1 RING CONFIGURATION
or
DIRECT I/O
CH2 RING CONFIGURATION
is “Yes”), all direct output messages should be received back. If not, the direct input/output ring
break self-test is triggered. The self-test error is signaled by the
DIRECT RING BREAK
FlexLogic operand.
DIRECT I/O
DIRECT OUTPUT
DEVICE ID: 1
Range: 1 to 16 in steps of 1
MESSAGE
DIRECT I/O CH1 RING
CONFIGURATION: Yes
Range: Yes, No
MESSAGE
DIRECT I/O CH2 RING
CONFIGURATION: Yes
Range: Yes, No
MESSAGE
DIRECT I/O DATA
RATE: 64 kbps
Range: 64 kbps, 128 kbps
MESSAGE
DIRECT I/O CHANNEL
CROSSOVER: Disabled
Range: Disabled, Enabled
MESSAGE
CRC ALARM CH1
MESSAGE
CRC ALARM CH2
MESSAGE
UNRETURNED
MESSAGES ALARM CH1
MESSAGE
UNRETURNED
MESSAGES ALARM CH2
Содержание D60
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