ABB Relion 650 Series Technical Manual page 357

1MRK 506 326-UUS B
11.3.7 Technical data
Table 286: ZCLCPLAL technical data
Function
Timers
11.4 Scheme communication logic for residual overcurrent
protection ECPSCH (85)
11.4.1 Identification
Function description
Scheme communication logic for
residual overcurrent protection
11.4.2 Functionality
To achieve fast fault clearance of ground faults on the part of the line not covered by the
instantaneous step of the residual overcurrent protection, the directional residual overcurrent
protection can be supported with a logic that uses communication channels.
In the directional scheme, information of the fault current direction must be transmitted to the
other line end. With directional comparison, a short operate time of the protection including a
channel transmission time, can be achieved. This short operate time enables rapid autoreclosing
function after the fault clearance.
The communication logic module for directional residual current protection enables blocking as
well as permissive under/overreaching schemes. The logic can also be supported by additional
logic for weak-end infeed and current reversal, included in Current reversal and weak-end infeed
logic for residual overcurrent protection (ECRWPSCH, 85) function.
11.4.3 Function block
BLOCK
BLKTR
BLKCS
CS_STOP
PLTR_CRD
CSOR
CSUR
CR
CR_GUARD
ANSI09000009 V1 EN-US
Figure 189: ECPSCH (85) function block
Line distance protection REL650
Technical manual
Range or value
(0.000–60.000) s
ECPSCH (85)
TRIP
CS
CRL
LCG
ANSI09000009-1-en.vsd
© Copyright 2011 ABB Power Grids. All rights reserved
Accuracy
± 0.5% ± 10 ms
IEC 61850 IEC 60617
identification identification
ECPSCH -
Scheme communication
GUID-396584F8-6A5B-4E5A-9231-E64E7C7C68A5 v1
GUID-2AD65FB9-AC01-4D75-B744-9D90B2044655 v1
ANSI/IEEE C37.2
device number
85
Section 11
M14882-1 v2
M13918-4 v7
M13924-3 v5
351