Impedance Protection - Hitachi Relion 670 Series Product Manual

Phasor measurement unit RES670
Version 2.2
Table 5. Basic IED functions, continued
IEC 61850 or function
name
CAMCONFIG
CAMSTATUS
TOOLINF
COMSTATUS
Table 6. Local HMI functions
IEC 61850 or function
name
LHMICTRL
LANGUAGE
SCREEN
FNKEYTY1–FNKEYTY5
FNKEYMD1–
FNKEYMD5
LEDGEN
OPENCLOSE_LED
GRP1_LED1–
GRP1_LED15
GRP2_LED1–
GRP2_LED15
GRP3_LED1–
GRP3_LED15

4. Impedance protection

Power swing detection, blocking and unblocking
ZMBURPSB
Power swings may occur after disconnection of heavy loads
or trip of big generation plants.
Power swing detection, blocking and unblocking function
(ZMBURPSB ) is used to detect power swings and initiate
blocking of all distance protection zones.
Also, fault identification and its classification for various
types of fault occurrences during the power swing
are available in the ZMBURPSB function. So, six measuring
loops used in each distance protection zone, if blocked
during power swing, can be unblocked/released for distance
measurement depending upon the fault type and thereby,
reliable fault clearance can be achieved for faults during
power swing.
It is still possible to inhibit the ZMBURPSB function for
earth-fault currents during a power swing without activating
power swing unblocking functionality.
Hitachi Energy
Description
Central account management configuration
Central account management status
Tools information
Protocol diagnostic
Description
Local HMI signals
Local human machine language
Local HMI Local human machine screen behavior
Parameter setting function for HMI in PCM600
General LED indication part for LHMI
LHMI LEDs for open and close keys
Basic part for CP HW LED indication module
GUID-DB043AB6-E571-4DCB-B899-663D13AFDE2E v1
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Out-of-step protection OOSPPAM
The out-of-step protection (OOSPPAM ) function in the IED
can be used for both generator protection and as well for
line protection applications.
The main purpose of the OOSPPAM function is to detect,
evaluate, and take the required action during pole slipping
occurrences in the power system.
The OOSPPAM function detects pole slip conditions and
trips the generator as fast as possible, after the first pole-
slip if the center of oscillation is found to be in zone 1,
which normally includes the generator and its step-up power
transformer. If the center of oscillation is found to be further
out in the power system, in zone 2, more than one pole-slip
is usually allowed before the generator-transformer unit is
disconnected. A parameter setting is available to take into
account the circuit breaker opening time. If there are
several out-of-step relays in the power system, then the one
which finds the center of oscillation in its zone 1 should
operate first.
Two current channels I3P1 and I3P2 are available in
OOSPPAM function to allow the direct connection of two
groups of three-phase currents; that may be needed for very
1MRK 511 410-BEN P
GUID-BF2F7D4C-F579-4EBD-9AFC-7C03296BD5D4 v8
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