Impedance Protection; Power Swing Detection, Blocking And Unblocking Zmburpsb(68); Function Revision History; Identification - Hitachi Relion 670 Series Applications Manual

1MRK511407-UUS Rev. N
Section 7
7.1 Power swing detection, blocking and unblocking
ZMBURPSB(68)
7.1.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
M
N
7.1.2

Identification

Function description
Power swing detection, blocking and
unblocking
7.1.3

Application

7.1.3.1

Power swing blocking

Various changes in power system may cause oscillations of rotating units. The most typical reasons for
these oscillations are big changes in load or changes in power system configuration caused by different
faults and their clearance. As the rotating masses strive to find a stable operate condition, they oscillate
with damped oscillations until they reach the final stability.
The extent of the oscillations depends on the extent of the disturbances and on the natural stability of the
system.
Phasor measurement unit RES670
Application manual

Impedance protection

Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 Power swing unblocking feature is made available to have phase selection and thereby,
releasing distance measuring loops for faults during power swing. Added new outputs FLTL1,
FLTL2, FLTL3, FLT1PH, FLT2PH, FLT3PH, STCND, and RELCND. IEC 61850 LN is renamed
as ZMBURPSB.
2.2.5 -
2.2.6 -
2.2.6 -
IEC 61850
identification
ZMBURPSB
© 2017 - 2023 Hitachi Energy. All rights reserved
IEC 60617 ANSI/IEEE C37.2
identification device number
68
Zpsb
SYMBOL-EE V1 EN-US
Section 7
Impedance protection
GUID-9EA1D091-D5FF-45B1-86E6-E9CDE3DD29BF v1
GUID-519970E3-BC9F-4DB7-9608-4CBD4E2ACB30 v3
GUID-69401D58-00EB-4560-8C35-72AF417E5441 v1
GUID-183E7EEC-F41A-4219-A430-F206C952552D v1
93