ABB REG670 Applications Manual

• HwSyncSrc: set to Off
• SyncLostMode: set to No block to indicate that protection functions are not
blocked
• SyncAccLevel: set to unspecified
Two status monitoring signals with no time synchronization:
• SYNCH signal on the MUx function block indicates that protection functions are
blocked due to loss of internal time synchronization to the IED. Since
SyncLostMode is set to No block, this signal is not set.
• MUSYNCH signal on the MUx function block is set if the datastream indicates
time synchronization loss. However, protection functions are not blocked.
To get higher availability in protection functions, it is possible to avoid blocking
during time synchronization loss if there is a single source of analog data. This means
that if there is only one physical MU and no TRM, parameter SyncLostMode is set to
No block but parameter HwSyncSrc is still set to PPS. This maintains analog and
binary data correlation in disturbance recordings without blocking protection
functions if PPS is lost.
20.3.3 IEC 61850 quality expander QUALEXP
The quality expander component is used to display the detailed quality of an
IEC/UCA 61850-9-2LE analog channel. The component expands the channel quality
output of a Merging Unit analog channel received in the IED as per the IEC 61850-7-3
standard. This component can be used during the ACT monitoring to get the particular
channel quality of the Merging Unit.
Figure
334 depicts the usage of the quality expander block in ACT.
IEC16000073-1-en.vsdx
IEC16000073 V1 EN
Figure 334: Quality expander block in ACT
The expanded quality bits are visible on the outputs as per IEC 61850-7-3 standard.
When written to IED, the configuration will show the expanded form of the respective
MU channel quality information during the online monitoring in the ACT.
The quality expander function is intended for monitoring purposes,
not for being used in a logic controlling the behaviour of the protection
1MRK 502 071-UEN - Section 20
Station communication
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 697
Application manual

ABB REG670 Specifications

General

Brand	ABB
Model	REG670
Category	Protection Device
Language	English