Setting Parameters; Pole Slip Protection Pspppam (78); Introduction - ABB Relion 670 Series Technical Reference Manual

Section 6
Impedance protection
6.12.5
Table 168: ZMRPSL Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
tDZ 0.000 - 60.000
tDZMUR 0.000 - 60.000
tCS 0.000 - 60.000
tTrip 0.000 - 60.000
tBlkTr 0.000 - 60.000
6.13
6.13.1
360
Table 167: ZMRPSL Output signals
Name Type
TRIP BOOLEAN
PUZMURPS BOOLEAN
BLKZMUR BOOLEAN
BLKZMOR BOOLEAN
CS BOOLEAN

Setting parameters

Unit Step
- -
s 0.001
s 0.001
s 0.001
s 0.001
s 0.001

Pole slip protection PSPPPAM (78)

Function description
Pole slip protection

Introduction

Sudden events in an electrical power system such as large changes in load, fault
occurrence or fault clearance, can cause power oscillations referred to as power swings.
In a non-recoverable situation, the power swings become so severe that the
synchronism is lost, a condition referred to as pole slipping. The main purpose of the
pole slip protection (PSPPPAM ,78) is to detect, evaluate, and take the required action
for pole slipping occurrences in the power system. The electrical system parts swinging
Description
Trip through Power Swing Logic
Pickup of Underreaching zone controlled by PSL to be
used in configuration
Block trip of underreaching impedance zone
Block trip of overreaching distance protection zones
Carrier send signal controlled by the power swing
Default Description
Disabled Disable/Enable Operation
0.050 Permitted max oper time diff between higher
and lower zone
0.200 Delay for oper of underreach zone with
detected diff in oper time
0.100 Conditional timer for sending the CS at power
swings
0.100 Conditional timer for tripping at power swings
0.300 Timer for blocking the overreaching zones trip
IEC 61850 IEC 60617
identification identification
PSPPPAM
1MRK505222-UUS C
ANSI/IEEE C37.2
device number
U 78
cos
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