Setting Guidelines; Specific Settings Related To The Iec/Uca 61850-9-2Le Communication - Hitachi Relion 670 Series Applications Manual

Section 19
Station communication
19.3.4

Setting guidelines

Merging Units (MUs) have several settings on local HMI under:
• Main menu /Configuration /Analog modules /MUx:92xx . The corresponding settings are also
available in PST (PCM600).
• Main menu /Configuration /Communication /Merging units configuration /MUx:92xx . The
corresponding settings are also available in ECT (PCM600).
XX can take value 01–12.
19.3.4.1

Specific settings related to the IEC/UCA 61850-9-2LE communication

The process bus communication IEC/UCA 61850-9-2LE has specific settings, similar to the analog inputs
modules.
If there are more than one sample group involved, time synch is mandatory. If there is no time
synchronization, the protection functions will be blocked due to condition blocking.
CTStarPointx: These parameters specify the direction to or from object. See also section
current channels".
SyncLostMode: If this parameter is set to Block and the IED hardware time synchronization is lost or the
synchronization to the MU time is lost, the protection functions in the list
conditional blocking. If this parameter is set to BlockOnLostUTC, the protection functions in list
blocked if the IED hardware time synchronization is lost or the synchronization of the MU time is lost or
the IED has lost global common synchronization (i.e. GPS, IRIG-B or PTP). SYNCH output will be set if
IED hardware time synchronization is lost. MUSYNCH output will be set if either of MU or IED hardware
time synchronization is lost.
Table 34:
Function description
Current circuit supervison
General currrent and voltage protection
Current delta supervision
Voltage delta supervision
Real delta supervision, real
Four step residual overcurrent protection
Frequency time accumulation protection
Fuse failure supervision
Directional Overpower protection
Directional Underpower protection
Thermal overload protection, one time constant
Thermal overload protection, one time constant
Table continues on next page
282
Binary signals over LDCM are transmitted as valid and processed normally even when analog
signals are transmitted as invalid due to loss of communication or loss of time
synchronization.
Blocked protection functions if IEC/UCA 61850-9-2LE communication is interrupted and functions are connected
to specific MUs
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Application manual