Table 4. Local HMI functions
IEC 61850 or function
name
ANSI Description
LHMICTRL Local HMI signals
LANGUAGE Local human machine language
SCREEN Local HMI Local human machine screen behavior
FNKEYTY1–FNKEYTY5
FNKEYMD1–
FNKEYMD5
Parameter setting function for HMI in PCM600
LEDGEN General LED indication part for LHMI
OPENCLOSE_LED LHMI LEDs for open and close keys
GRP1_LED1–
GRP1_LED15
GRP2_LED1–
GRP2_LED15
GRP3_LED1–
GRP3_LED15
Basic part for CP HW LED indication module
3. Impedance protection
Distance protection, quadrilateral and mho ZMFPDIS
GUID-2E34AB7F-886E-499F-8984-09041A89238D v8
The distance protection (ZMFPDIS) provides an operate time
that is slightly over one cycle, down towards sub-cycle. Its six
zone, full scheme protection concept is entirely suitable in
applications with single-phase autoreclosing.
Each measurement zone is designed with the flexibility to
operate in either quadrilateral or mho characteristic mode.
This can even be decided separate for the phase-to-ground
or phase-to-phase loops. The six zones can operate either
independent of each other, or their start can be linked (per
zone) through the phase selector or the first starting zone.
This can provide fast operate times for evolving faults.
The operation of the phase-selection is primarily based on a
current change criteria (i.e. delta quantities), however there is
also a phase selection criterion operating in parallel which
bases its operation on voltage and current phasors
exclusively. Additionally the directional element provides a
fast and correct directional decision under difficult operating
conditions, including close-in three-phase faults,
simultaneous faults and faults with only zero-sequence in-
feed. During phase-to-earth faults on heavily loaded power
lines there is an adaptive load compensation algorithm that
prevents overreaching of the distance zones in the load
exporting end, improving the selectivity of the function. This
also reduces underreach in the importing end.
Power swing detection ZMRPSB
M13873-3 v12
Power swings may occur after disconnection of heavy loads
or trip of big generation plants.
Power swing detection function (ZMRPSB ) is used to detect
power swings and initiate block of all distance protection
zones. Occurrence of earth-fault currents during a power
swing inhibits the ZMRPSB function, to allow fault clearance.
Power swing logic PSLPSCH
SEMOD131350-4 v4
Power Swing Logic (PSLPSCH) is a complementary function
to Power Swing Detection (ZMRPSB) function. It provides
possibility for selective tripping of faults on power lines during
system oscillations (power swings or pole slips), when the
distance protection function should normally be blocked. The
complete logic consists of two different parts:
• Communication and tripping part: provides selective
tripping on the basis of special distance protection
zones and a scheme communication logic, which are not
blocked during the system oscillations.
• Blocking part: blocks unwanted operation of
instantaneous distance protection zone 1 for oscillations,
which are initiated by faults and their clearing on the
adjacent power lines and other primary elements.
Out-of-step protection OOSPPAM
GUID-BF2F7D4C-F579-4EBD-9AFC-7C03296BD5D4 v8
The out-of-step protection (OOSPPAM ) function in the IED
can be used for both generator protection and as well for line
protection applications.
1MRK 506 384-BEN A
Line distance protection REL650 2.2
Product version: 2.2.1
ABB 15
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