Functionality - ABB RELION 670 Series Technical Manual

Section 7
Impedance protection
7.6 Distance protection zone, quadrilateral characteristic,
separate settings ZMRPDIS (21), ZMRAPDIS (21) and
ZDRDIR (21D)
7.6.1 Identification
Function description
Distance protection zone,
quadrilateral characteristic, separate
settings (zone 1)
Distance protection zone,
quadrilateral characteristic, separate
settings (zone 2-5)
Function description
Directional impedance quadrilateral
7.6.2

Functionality

The line distance protection is up to five zone full scheme protection with three fault loops for
phase-to-phase faults and three fault loops for phase-to-ground fault for each of the independent
zones. Individual settings for each zone in resistive and reactive reach gives flexibility for use as
back-up protection for transformer connected to overhead lines and cables of different types and
lengths.
Mho alternative quadrilateral characteristic is available.
ZMRPDIS (21) together with Phase selection, quadrilateral characteristic with settable angle
FRPSPDIS (21) has functionality for load encroachment, which increases the possibility to detect
high resistive faults on heavily loaded lines.
The distance protection zones can operate, independent of each other, in directional (forward or
reverse) or non-directional mode.
254
IEC 61850 IEC 60617
identification identification
ZMRPDIS
S00346 V1 EN-US
ZMRAPDIS
S00346 V1 EN-US
IEC 61850 IEC 60617
identification identification
ZDRDIR Z<->
1MRK 502 066-UUS B
GUID-7308DB86-32CE-4615-95DC-92BEEF69E184 v1
GUID-420DD49A-C65B-4F04-B317-9558DCCE7A52 v1
ANSI/IEEE C37.2
device number
21
21
GUID-119120A5-8600-44C6-9C85-81136DBBE280 v1
ANSI/IEEE C37.2
device number
21D
GUID-014501E7-EE0D-440F-8DC8-C44B848E49D3 v2
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