ABB REG650 User Manual

Section 7 Impedance protection
7.1 Power swing detection ZMRPSB
7.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Power swing detection ZMRPSB
Zpsb
SYMBOL-EE V1 EN
68
7.1.2 Functionality
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.
7.1.3 Function block
ZMRPSB
I3P*
U3P*
BLOCK
BLKI01
BLKI02
I0CHECK
EXTERNAL
START
ZOUT
ZIN
IEC09000058-1-en.vsd
IEC09000058 V1 EN
Figure 61: ZMRPSB function block
1MRK 502 048-UEN A Section 7
Impedance protection
139
Technical manual

ABB REG650 Specifications

General

Brand	ABB
Model	REG650
Category	Protection Device
Language	English