ABB Relion REG670, Техническое руководство

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The Directional impedance element for mho characteristic (ZDMRDIR) function has
the following output signals:
The STDIRCND output provides an integer signal that depends on the evaluation and
is derived from a binary coded signal as follows:
bit 11
(2048)
bit 10
(1024)
bit 9
(512)
bit 8
(256)
bit 7
(128)
bit 6
(64)
STRVL3L1=
1
STRVL2L3=
1
STRVL1L2=
1
STRVL3N=1 STRVL2N=1 STRVL1N=1
bit 5
(32)
bit 4
(16)
bit 3
(8)
bit 2
(4)
bit 1
(2)
bit 0
(1)
STFWL3L1=
1
STFWL2L3=
1
STFWL1L2=
1
STFWL3N=1 STFWL2N=1 STFWL1N=1
The STFW output is a logical signal with value 1 or 0. It is made up as an OR-function
of all the forward starting conditions, that is, STFWL1N, STFWL2N, STFWL3N,
STFWL1L2, STFWL2L3 and STFWL3L1. The STRV output is similar to the STFW
output, the only difference being that it is made up as an OR-function of all the reverse
starting conditions, that is, STRVL1N, STRVL2N, STRVL3N, STRVL1L2,
STRVL2L3 and STRVL3L1.
7.3 High speed distance protection ZMFPDIS
7.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
High speed distance protection zone
(zone 1)
ZMFPDIS
S00346 V1 EN
21
7.3.2 Functionality
The High speed distance protection (ZMFPDIS) is providing sub-cycle, down
towards half-cycle, operate time for basic faults within 60% of the line length and up
to around SIR 5. At the same time, it is specifically designed for extra care during
difficult conditions in high voltage transmission networks, like faults on long heavily
loaded lines and faults generating heavily distorted signals. These faults are handled
with outmost security and dependability, although sometimes with reduced operating
speed.
1MRK502052-UEN B
Section 7
Impedance protection
203
Technical manual